initial commit2
This commit is contained in:
Fabian
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.idea
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Apache License
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http://www.apache.org/licenses/
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|
@ -0,0 +1,37 @@
|
|||
# Prometheus CUPS Exporter
|
||||
|
||||
[](https://github.com/phin1x/cups_exporter/releases/tag/v1.0.0)
|
||||
[](https://github.com/phin1x/cups_exporter/blob/master/LICENSE)
|
||||
|
||||
Prometheus exporter for CUPS server
|
||||
|
||||
# Build
|
||||
|
||||
```bash
|
||||
go build -o cups_exporter main.go
|
||||
```
|
||||
|
||||
# Running
|
||||
|
||||
By default the cups_exporter serves on port `0.0.0.0:9628` at `/metrics`. The cups server is specified by the `cups.uri` flag (default: `https://localhost:631`).
|
||||
|
||||
Examples:
|
||||
```bash
|
||||
./cups_exporter # use defaults
|
||||
./cups_exporter -cups.uri https://exporter:prometheus@mycups.foo.bar:631 # scrape remote server with basic auth
|
||||
```
|
||||
|
||||
# Metrics
|
||||
|
||||
| Metric | Meaning | Labels |
|
||||
| ------ | ------- | ------ |
|
||||
| up | Was the last scrape of cups successful | |
|
||||
| cups_job_active_total | Number of current print jobs | |
|
||||
| cups_job_total | Total number of print jobs | |
|
||||
| cups_printer_state_total | Number of printers per state | state |
|
||||
| cups_printer_total | Number of available printers | |
|
||||
| cups_scrape_duration_seconds | Duration of the last scrape in seconds | |
|
||||
|
||||
# Licence
|
||||
|
||||
Apache Licence Version 2.0
|
||||
|
|
@ -0,0 +1,11 @@
|
|||
module github.com/phin1x/cups-exporter
|
||||
|
||||
go 1.13
|
||||
|
||||
require (
|
||||
github.com/go-logr/logr v0.1.0
|
||||
github.com/go-logr/zapr v0.1.1
|
||||
github.com/phin1x/go-ipp v1.2.1-0.20191226192803-6c9dee854ace
|
||||
github.com/prometheus/client_golang v1.3.0
|
||||
go.uber.org/zap v1.13.0
|
||||
)
|
||||
|
|
@ -0,0 +1,130 @@
|
|||
github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
|
||||
github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
|
||||
github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
|
||||
github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
|
||||
github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
|
||||
github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
|
||||
github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
|
||||
github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
|
||||
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
|
||||
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
|
||||
github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
|
||||
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
|
||||
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||
github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
|
||||
github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
|
||||
github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
|
||||
github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
|
||||
github.com/go-logr/logr v0.1.0 h1:M1Tv3VzNlEHg6uyACnRdtrploV2P7wZqH8BoQMtz0cg=
|
||||
github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas=
|
||||
github.com/go-logr/zapr v0.1.1 h1:qXBXPDdNncunGs7XeEpsJt8wCjYBygluzfdLO0G5baE=
|
||||
github.com/go-logr/zapr v0.1.1/go.mod h1:tabnROwaDl0UNxkVeFRbY8bwB37GwRv0P8lg6aAiEnk=
|
||||
github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
|
||||
github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
|
||||
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
|
||||
github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
|
||||
github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
|
||||
github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
|
||||
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
|
||||
github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
|
||||
github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
|
||||
github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
|
||||
github.com/json-iterator/go v1.1.8/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
|
||||
github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
|
||||
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
|
||||
github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
|
||||
github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
|
||||
github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
|
||||
github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
|
||||
github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
|
||||
github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
|
||||
github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
|
||||
github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
|
||||
github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
|
||||
github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
|
||||
github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
|
||||
github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
|
||||
github.com/phin1x/go-ipp v1.1.0 h1:Mel4tBJJKAtiiXI63bfaYxfiXZ+6enE3jt1cYpvwl6Y=
|
||||
github.com/phin1x/go-ipp v1.1.0/go.mod h1:Rc8PTxxg/W+oCS2j6hGCSAW4SlxKOTZwTFdY5ToLcUg=
|
||||
github.com/phin1x/go-ipp v1.1.1-0.20191226154608-d0d4987b7643 h1:rBvIPLUyTVnHFek/DwbpvYQiMNsRY2XyUL2U/Qw24+E=
|
||||
github.com/phin1x/go-ipp v1.1.1-0.20191226154608-d0d4987b7643/go.mod h1:GZwyNds6grdLi2xRBX22Cvt7Dh7ITWsML0bjrqBF5uo=
|
||||
github.com/phin1x/go-ipp v1.1.1-0.20191226154932-42b7622f6488 h1:aGOOFF8NDQ0dEvknqVNVIO9j9jdwCp1rPylLUZhzcJU=
|
||||
github.com/phin1x/go-ipp v1.1.1-0.20191226154932-42b7622f6488/go.mod h1:GZwyNds6grdLi2xRBX22Cvt7Dh7ITWsML0bjrqBF5uo=
|
||||
github.com/phin1x/go-ipp v1.2.0 h1:zyJAwnhdntUJHlRklKAHLEgyNJ+EswC0YDYFkD9tMU8=
|
||||
github.com/phin1x/go-ipp v1.2.0/go.mod h1:GZwyNds6grdLi2xRBX22Cvt7Dh7ITWsML0bjrqBF5uo=
|
||||
github.com/phin1x/go-ipp v1.2.1-0.20191226161415-f0c2e4db43e8 h1:VAAw295HFnJNBPEL7JXp4HPyL116+3jMTNgQu+Rw9CQ=
|
||||
github.com/phin1x/go-ipp v1.2.1-0.20191226161415-f0c2e4db43e8/go.mod h1:GZwyNds6grdLi2xRBX22Cvt7Dh7ITWsML0bjrqBF5uo=
|
||||
github.com/phin1x/go-ipp v1.2.1-0.20191226192803-6c9dee854ace h1:ELNodn+xPzMsqbwObNVFRt/OYlcCEw51IlRYdCtURcM=
|
||||
github.com/phin1x/go-ipp v1.2.1-0.20191226192803-6c9dee854ace/go.mod h1:GZwyNds6grdLi2xRBX22Cvt7Dh7ITWsML0bjrqBF5uo=
|
||||
github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||
github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||
github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
|
||||
github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
|
||||
github.com/prometheus/client_golang v1.3.0 h1:miYCvYqFXtl/J9FIy8eNpBfYthAEFg+Ys0XyUVEcDsc=
|
||||
github.com/prometheus/client_golang v1.3.0/go.mod h1:hJaj2vgQTGQmVCsAACORcieXFeDPbaTKGT+JTgUa3og=
|
||||
github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
|
||||
github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
|
||||
github.com/prometheus/client_model v0.1.0 h1:ElTg5tNp4DqfV7UQjDqv2+RJlNzsDtvNAWccbItceIE=
|
||||
github.com/prometheus/client_model v0.1.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
|
||||
github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
|
||||
github.com/prometheus/common v0.7.0 h1:L+1lyG48J1zAQXA3RBX/nG/B3gjlHq0zTt2tlbJLyCY=
|
||||
github.com/prometheus/common v0.7.0/go.mod h1:DjGbpBbp5NYNiECxcL/VnbXCCaQpKd3tt26CguLLsqA=
|
||||
github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
|
||||
github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
|
||||
github.com/prometheus/procfs v0.0.8 h1:+fpWZdT24pJBiqJdAwYBjPSk+5YmQzYNPYzQsdzLkt8=
|
||||
github.com/prometheus/procfs v0.0.8/go.mod h1:7Qr8sr6344vo1JqZ6HhLceV9o3AJ1Ff+GxbHq6oeK9A=
|
||||
github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
|
||||
github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
|
||||
github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
|
||||
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
|
||||
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
|
||||
github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
|
||||
github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
|
||||
go.uber.org/atomic v1.5.0 h1:OI5t8sDa1Or+q8AeE+yKeB/SDYioSHAgcVljj9JIETY=
|
||||
go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
|
||||
go.uber.org/multierr v1.3.0 h1:sFPn2GLc3poCkfrpIXGhBD2X0CMIo4Q/zSULXrj/+uc=
|
||||
go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
|
||||
go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee h1:0mgffUl7nfd+FpvXMVz4IDEaUSmT1ysygQC7qYo7sG4=
|
||||
go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
|
||||
go.uber.org/zap v1.13.0 h1:nR6NoDBgAf67s68NhaXbsojM+2gxp3S1hWkHDl27pVU=
|
||||
go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
|
||||
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
|
||||
golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
|
||||
golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
|
||||
golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
|
||||
golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
|
||||
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
|
||||
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/sys v0.0.0-20191220142924-d4481acd189f h1:68K/z8GLUxV76xGSqwTWw2gyk/jwn79LUL43rES2g8o=
|
||||
golang.org/x/sys v0.0.0-20191220142924-d4481acd189f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
|
||||
golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
|
||||
golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
|
||||
golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5 h1:hKsoRgsbwY1NafxrwTs+k64bikrLBkAgPir1TNCj3Zs=
|
||||
golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
|
||||
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
|
||||
gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
|
||||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
|
||||
gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
honnef.co/go/tools v0.0.1-2019.2.3 h1:3JgtbtFHMiCmsznwGVTUWbgGov+pVqnlf1dEJTNAXeM=
|
||||
honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
|
||||
|
|
@ -0,0 +1,60 @@
|
|||
package main
|
||||
|
||||
import (
|
||||
"flag"
|
||||
"github.com/go-logr/logr"
|
||||
"github.com/go-logr/zapr"
|
||||
"github.com/phin1x/cups-exporter/pkg"
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
"github.com/prometheus/client_golang/prometheus/promhttp"
|
||||
"go.uber.org/zap"
|
||||
"net/http"
|
||||
"os"
|
||||
)
|
||||
|
||||
type options struct {
|
||||
Address string
|
||||
MetricsPath string
|
||||
|
||||
CupsUri string
|
||||
}
|
||||
|
||||
func main() {
|
||||
log := getLogger()
|
||||
|
||||
opts := options{}
|
||||
flag.StringVar(&opts.Address, "web.listen-address", ":9628", "address on which to expose metrics and web interface")
|
||||
flag.StringVar(&opts.MetricsPath, "web.telemetry-path", "/metrics", "path under which to expose metrics")
|
||||
flag.StringVar(&opts.CupsUri, "cups.uri", "https://localhost:631", "uri under with the cups server is available, including username and password it required")
|
||||
flag.Parse()
|
||||
|
||||
log.Info("starting cups exporter")
|
||||
exporter, err := pkg.NewExporter(opts.CupsUri, log)
|
||||
if err != nil {
|
||||
log.Error(err, "failed to create the exporter")
|
||||
os.Exit(1)
|
||||
}
|
||||
prometheus.MustRegister(exporter)
|
||||
|
||||
http.Handle(opts.MetricsPath, promhttp.Handler())
|
||||
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
|
||||
w.Write([]byte(`<html>
|
||||
<head><title>Cups Exporter</title></head>
|
||||
<body>
|
||||
<h1>Cups Exporter</h1>
|
||||
<p><a href="` + opts.MetricsPath + `">Metrics</a></p>
|
||||
</body>
|
||||
</html>`))
|
||||
})
|
||||
|
||||
log.Info("listening on " + opts.Address)
|
||||
log.Error(http.ListenAndServe(opts.Address, nil), "failed to start the http server")
|
||||
}
|
||||
|
||||
func getLogger() logr.Logger {
|
||||
zapLog, err := zap.NewDevelopment()
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return zapr.NewLogger(zapLog)
|
||||
}
|
||||
|
|
@ -0,0 +1,119 @@
|
|||
package pkg
|
||||
|
||||
import (
|
||||
"github.com/go-logr/logr"
|
||||
"github.com/phin1x/go-ipp"
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
"net/url"
|
||||
"strconv"
|
||||
"time"
|
||||
)
|
||||
|
||||
const (
|
||||
namespace = "cups"
|
||||
)
|
||||
|
||||
func NewExporter(cupsUri string, log logr.Logger) (*Exporter, error) {
|
||||
cu, err := url.Parse(cupsUri)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
port, err := strconv.Atoi(cu.Port())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
password, _ := cu.User.Password()
|
||||
|
||||
client := ipp.NewCUPSClient(cu.Hostname(), port, cu.User.Username(), password, cu.Scheme == "https")
|
||||
|
||||
return &Exporter{
|
||||
log: log,
|
||||
client: client,
|
||||
|
||||
lastJobId: 0,
|
||||
lastCompletedJobId: 0,
|
||||
|
||||
up: prometheus.NewDesc(
|
||||
"up",
|
||||
"Was the last scrape of cups successful",
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
scrapeDurationSeconds: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "", "scrape_duration_seconds"),
|
||||
"Duration of the last scrape in seconds",
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
jobsActiveTotal: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "job", "active_total"),
|
||||
"Number of current print jobs",
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
jobsTotal: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "job", "total"),
|
||||
"Total number of print jobs",
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
printersTotal: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "printer", "total"),
|
||||
"Number of available printers",
|
||||
nil,
|
||||
nil,
|
||||
),
|
||||
printerStateTotal: prometheus.NewDesc(
|
||||
prometheus.BuildFQName(namespace, "printer", "state_total"),
|
||||
"Number of printers per state",
|
||||
[]string{"state"},
|
||||
nil,
|
||||
),
|
||||
}, nil
|
||||
}
|
||||
|
||||
type Exporter struct {
|
||||
log logr.Logger
|
||||
client *ipp.CUPSClient
|
||||
|
||||
lastJobId int
|
||||
lastCompletedJobId int
|
||||
|
||||
up *prometheus.Desc
|
||||
scrapeDurationSeconds *prometheus.Desc
|
||||
jobsActiveTotal *prometheus.Desc
|
||||
jobsTotal *prometheus.Desc
|
||||
printersTotal *prometheus.Desc
|
||||
printerStateTotal *prometheus.Desc
|
||||
}
|
||||
|
||||
func (e *Exporter) Describe(ch chan<- *prometheus.Desc) {
|
||||
ch <- e.up
|
||||
ch <- e.scrapeDurationSeconds
|
||||
ch <- e.jobsTotal
|
||||
ch <- e.jobsActiveTotal
|
||||
ch <- e.printersTotal
|
||||
ch <-e.printerStateTotal
|
||||
}
|
||||
|
||||
func (e *Exporter) Collect(ch chan<- prometheus.Metric) {
|
||||
up := float64(1)
|
||||
scrapeStartTime := time.Now()
|
||||
|
||||
if err := e.jobsMetrics(ch); err != nil {
|
||||
e.log.Error(err, "failed to get job metrics")
|
||||
up = 0
|
||||
}
|
||||
|
||||
if err := e.printerMetrics(ch); err != nil {
|
||||
e.log.Error(err, "failed to get printer metrics")
|
||||
up = 0
|
||||
}
|
||||
|
||||
scrapeDuration := time.Now().Sub(scrapeStartTime)
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(e.scrapeDurationSeconds, prometheus.GaugeValue, scrapeDuration.Seconds())
|
||||
ch <- prometheus.MustNewConstMetric(e.up, prometheus.GaugeValue, up)
|
||||
}
|
||||
|
|
@ -0,0 +1,47 @@
|
|||
package pkg
|
||||
|
||||
import (
|
||||
"github.com/phin1x/go-ipp"
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
)
|
||||
|
||||
func (e *Exporter) jobsMetrics(ch chan<- prometheus.Metric) error {
|
||||
jobs, err := e.client.GetJobs("", "", ipp.JobStateFilterNotCompleted, false, 0, 0, []string{})
|
||||
if err != nil {
|
||||
e.log.Error(err, "failed to fetch completed jobs")
|
||||
return err
|
||||
}
|
||||
|
||||
activeJobs := len(jobs)
|
||||
|
||||
jobs, err = e.client.GetJobs("", "", ipp.JobStateFilterAll, false, e.lastJobId, 0, []string{})
|
||||
if err != nil {
|
||||
e.log.Error(err, "failed to fetch all jobs")
|
||||
return err
|
||||
}
|
||||
|
||||
lastJobId := getLastJobId(jobs)
|
||||
if lastJobId > e.lastJobId {
|
||||
e.lastJobId = lastJobId
|
||||
}
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(e.jobsTotal, prometheus.CounterValue, float64(lastJobId))
|
||||
ch <- prometheus.MustNewConstMetric(e.jobsActiveTotal, prometheus.GaugeValue, float64(activeJobs))
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
/*
|
||||
returns the last job id, the last completed job id and the current active jobs
|
||||
*/
|
||||
func getLastJobId(m map[int]ipp.Attributes) int {
|
||||
lastJobId := 0
|
||||
|
||||
for k := range m {
|
||||
if k > lastJobId {
|
||||
lastJobId = k
|
||||
}
|
||||
}
|
||||
|
||||
return lastJobId
|
||||
}
|
||||
|
|
@ -0,0 +1,30 @@
|
|||
package pkg
|
||||
|
||||
import (
|
||||
"github.com/phin1x/go-ipp"
|
||||
"github.com/prometheus/client_golang/prometheus"
|
||||
)
|
||||
|
||||
func (e *Exporter) printerMetrics(ch chan<- prometheus.Metric) error {
|
||||
printers, err := e.client.GetPrinters([]string{"printer-state"})
|
||||
if err != nil {
|
||||
e.log.Error(err, "failed to fetch completed jobs")
|
||||
return err
|
||||
}
|
||||
|
||||
states := make(map[ipp.PrinterState]int)
|
||||
states[ipp.PrinterStateIdle] = 0
|
||||
states[ipp.PrinterStateProcessing] = 0
|
||||
states[ipp.PrinterStateStopped] = 0
|
||||
|
||||
for _, attr := range printers {
|
||||
states[ipp.PrinterState(attr["printer-state"][0].Value.(int))]++
|
||||
}
|
||||
|
||||
ch <- prometheus.MustNewConstMetric(e.printersTotal, prometheus.GaugeValue, float64(len(printers)))
|
||||
ch <- prometheus.MustNewConstMetric(e.printerStateTotal, prometheus.GaugeValue, float64(states[ipp.PrinterStateIdle]), "idle")
|
||||
ch <- prometheus.MustNewConstMetric(e.printerStateTotal, prometheus.GaugeValue, float64(states[ipp.PrinterStateProcessing]), "processing")
|
||||
ch <- prometheus.MustNewConstMetric(e.printerStateTotal, prometheus.GaugeValue, float64(states[ipp.PrinterStateStopped]), "stopped")
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
TAGS
|
||||
tags
|
||||
.*.swp
|
||||
tomlcheck/tomlcheck
|
||||
toml.test
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
language: go
|
||||
go:
|
||||
- 1.1
|
||||
- 1.2
|
||||
- 1.3
|
||||
- 1.4
|
||||
- 1.5
|
||||
- 1.6
|
||||
- tip
|
||||
install:
|
||||
- go install ./...
|
||||
- go get github.com/BurntSushi/toml-test
|
||||
script:
|
||||
- export PATH="$PATH:$HOME/gopath/bin"
|
||||
- make test
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
Compatible with TOML version
|
||||
[v0.4.0](https://github.com/toml-lang/toml/blob/v0.4.0/versions/en/toml-v0.4.0.md)
|
||||
|
||||
|
|
@ -0,0 +1,21 @@
|
|||
The MIT License (MIT)
|
||||
|
||||
Copyright (c) 2013 TOML authors
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in
|
||||
all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
THE SOFTWARE.
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
install:
|
||||
go install ./...
|
||||
|
||||
test: install
|
||||
go test -v
|
||||
toml-test toml-test-decoder
|
||||
toml-test -encoder toml-test-encoder
|
||||
|
||||
fmt:
|
||||
gofmt -w *.go */*.go
|
||||
colcheck *.go */*.go
|
||||
|
||||
tags:
|
||||
find ./ -name '*.go' -print0 | xargs -0 gotags > TAGS
|
||||
|
||||
push:
|
||||
git push origin master
|
||||
git push github master
|
||||
|
||||
|
|
@ -0,0 +1,218 @@
|
|||
## TOML parser and encoder for Go with reflection
|
||||
|
||||
TOML stands for Tom's Obvious, Minimal Language. This Go package provides a
|
||||
reflection interface similar to Go's standard library `json` and `xml`
|
||||
packages. This package also supports the `encoding.TextUnmarshaler` and
|
||||
`encoding.TextMarshaler` interfaces so that you can define custom data
|
||||
representations. (There is an example of this below.)
|
||||
|
||||
Spec: https://github.com/toml-lang/toml
|
||||
|
||||
Compatible with TOML version
|
||||
[v0.4.0](https://github.com/toml-lang/toml/blob/master/versions/en/toml-v0.4.0.md)
|
||||
|
||||
Documentation: https://godoc.org/github.com/BurntSushi/toml
|
||||
|
||||
Installation:
|
||||
|
||||
```bash
|
||||
go get github.com/BurntSushi/toml
|
||||
```
|
||||
|
||||
Try the toml validator:
|
||||
|
||||
```bash
|
||||
go get github.com/BurntSushi/toml/cmd/tomlv
|
||||
tomlv some-toml-file.toml
|
||||
```
|
||||
|
||||
[](https://travis-ci.org/BurntSushi/toml) [](https://godoc.org/github.com/BurntSushi/toml)
|
||||
|
||||
### Testing
|
||||
|
||||
This package passes all tests in
|
||||
[toml-test](https://github.com/BurntSushi/toml-test) for both the decoder
|
||||
and the encoder.
|
||||
|
||||
### Examples
|
||||
|
||||
This package works similarly to how the Go standard library handles `XML`
|
||||
and `JSON`. Namely, data is loaded into Go values via reflection.
|
||||
|
||||
For the simplest example, consider some TOML file as just a list of keys
|
||||
and values:
|
||||
|
||||
```toml
|
||||
Age = 25
|
||||
Cats = [ "Cauchy", "Plato" ]
|
||||
Pi = 3.14
|
||||
Perfection = [ 6, 28, 496, 8128 ]
|
||||
DOB = 1987-07-05T05:45:00Z
|
||||
```
|
||||
|
||||
Which could be defined in Go as:
|
||||
|
||||
```go
|
||||
type Config struct {
|
||||
Age int
|
||||
Cats []string
|
||||
Pi float64
|
||||
Perfection []int
|
||||
DOB time.Time // requires `import time`
|
||||
}
|
||||
```
|
||||
|
||||
And then decoded with:
|
||||
|
||||
```go
|
||||
var conf Config
|
||||
if _, err := toml.Decode(tomlData, &conf); err != nil {
|
||||
// handle error
|
||||
}
|
||||
```
|
||||
|
||||
You can also use struct tags if your struct field name doesn't map to a TOML
|
||||
key value directly:
|
||||
|
||||
```toml
|
||||
some_key_NAME = "wat"
|
||||
```
|
||||
|
||||
```go
|
||||
type TOML struct {
|
||||
ObscureKey string `toml:"some_key_NAME"`
|
||||
}
|
||||
```
|
||||
|
||||
### Using the `encoding.TextUnmarshaler` interface
|
||||
|
||||
Here's an example that automatically parses duration strings into
|
||||
`time.Duration` values:
|
||||
|
||||
```toml
|
||||
[[song]]
|
||||
name = "Thunder Road"
|
||||
duration = "4m49s"
|
||||
|
||||
[[song]]
|
||||
name = "Stairway to Heaven"
|
||||
duration = "8m03s"
|
||||
```
|
||||
|
||||
Which can be decoded with:
|
||||
|
||||
```go
|
||||
type song struct {
|
||||
Name string
|
||||
Duration duration
|
||||
}
|
||||
type songs struct {
|
||||
Song []song
|
||||
}
|
||||
var favorites songs
|
||||
if _, err := toml.Decode(blob, &favorites); err != nil {
|
||||
log.Fatal(err)
|
||||
}
|
||||
|
||||
for _, s := range favorites.Song {
|
||||
fmt.Printf("%s (%s)\n", s.Name, s.Duration)
|
||||
}
|
||||
```
|
||||
|
||||
And you'll also need a `duration` type that satisfies the
|
||||
`encoding.TextUnmarshaler` interface:
|
||||
|
||||
```go
|
||||
type duration struct {
|
||||
time.Duration
|
||||
}
|
||||
|
||||
func (d *duration) UnmarshalText(text []byte) error {
|
||||
var err error
|
||||
d.Duration, err = time.ParseDuration(string(text))
|
||||
return err
|
||||
}
|
||||
```
|
||||
|
||||
### More complex usage
|
||||
|
||||
Here's an example of how to load the example from the official spec page:
|
||||
|
||||
```toml
|
||||
# This is a TOML document. Boom.
|
||||
|
||||
title = "TOML Example"
|
||||
|
||||
[owner]
|
||||
name = "Tom Preston-Werner"
|
||||
organization = "GitHub"
|
||||
bio = "GitHub Cofounder & CEO\nLikes tater tots and beer."
|
||||
dob = 1979-05-27T07:32:00Z # First class dates? Why not?
|
||||
|
||||
[database]
|
||||
server = "192.168.1.1"
|
||||
ports = [ 8001, 8001, 8002 ]
|
||||
connection_max = 5000
|
||||
enabled = true
|
||||
|
||||
[servers]
|
||||
|
||||
# You can indent as you please. Tabs or spaces. TOML don't care.
|
||||
[servers.alpha]
|
||||
ip = "10.0.0.1"
|
||||
dc = "eqdc10"
|
||||
|
||||
[servers.beta]
|
||||
ip = "10.0.0.2"
|
||||
dc = "eqdc10"
|
||||
|
||||
[clients]
|
||||
data = [ ["gamma", "delta"], [1, 2] ] # just an update to make sure parsers support it
|
||||
|
||||
# Line breaks are OK when inside arrays
|
||||
hosts = [
|
||||
"alpha",
|
||||
"omega"
|
||||
]
|
||||
```
|
||||
|
||||
And the corresponding Go types are:
|
||||
|
||||
```go
|
||||
type tomlConfig struct {
|
||||
Title string
|
||||
Owner ownerInfo
|
||||
DB database `toml:"database"`
|
||||
Servers map[string]server
|
||||
Clients clients
|
||||
}
|
||||
|
||||
type ownerInfo struct {
|
||||
Name string
|
||||
Org string `toml:"organization"`
|
||||
Bio string
|
||||
DOB time.Time
|
||||
}
|
||||
|
||||
type database struct {
|
||||
Server string
|
||||
Ports []int
|
||||
ConnMax int `toml:"connection_max"`
|
||||
Enabled bool
|
||||
}
|
||||
|
||||
type server struct {
|
||||
IP string
|
||||
DC string
|
||||
}
|
||||
|
||||
type clients struct {
|
||||
Data [][]interface{}
|
||||
Hosts []string
|
||||
}
|
||||
```
|
||||
|
||||
Note that a case insensitive match will be tried if an exact match can't be
|
||||
found.
|
||||
|
||||
A working example of the above can be found in `_examples/example.{go,toml}`.
|
||||
|
|
@ -0,0 +1,509 @@
|
|||
package toml
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"math"
|
||||
"reflect"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
func e(format string, args ...interface{}) error {
|
||||
return fmt.Errorf("toml: "+format, args...)
|
||||
}
|
||||
|
||||
// Unmarshaler is the interface implemented by objects that can unmarshal a
|
||||
// TOML description of themselves.
|
||||
type Unmarshaler interface {
|
||||
UnmarshalTOML(interface{}) error
|
||||
}
|
||||
|
||||
// Unmarshal decodes the contents of `p` in TOML format into a pointer `v`.
|
||||
func Unmarshal(p []byte, v interface{}) error {
|
||||
_, err := Decode(string(p), v)
|
||||
return err
|
||||
}
|
||||
|
||||
// Primitive is a TOML value that hasn't been decoded into a Go value.
|
||||
// When using the various `Decode*` functions, the type `Primitive` may
|
||||
// be given to any value, and its decoding will be delayed.
|
||||
//
|
||||
// A `Primitive` value can be decoded using the `PrimitiveDecode` function.
|
||||
//
|
||||
// The underlying representation of a `Primitive` value is subject to change.
|
||||
// Do not rely on it.
|
||||
//
|
||||
// N.B. Primitive values are still parsed, so using them will only avoid
|
||||
// the overhead of reflection. They can be useful when you don't know the
|
||||
// exact type of TOML data until run time.
|
||||
type Primitive struct {
|
||||
undecoded interface{}
|
||||
context Key
|
||||
}
|
||||
|
||||
// DEPRECATED!
|
||||
//
|
||||
// Use MetaData.PrimitiveDecode instead.
|
||||
func PrimitiveDecode(primValue Primitive, v interface{}) error {
|
||||
md := MetaData{decoded: make(map[string]bool)}
|
||||
return md.unify(primValue.undecoded, rvalue(v))
|
||||
}
|
||||
|
||||
// PrimitiveDecode is just like the other `Decode*` functions, except it
|
||||
// decodes a TOML value that has already been parsed. Valid primitive values
|
||||
// can *only* be obtained from values filled by the decoder functions,
|
||||
// including this method. (i.e., `v` may contain more `Primitive`
|
||||
// values.)
|
||||
//
|
||||
// Meta data for primitive values is included in the meta data returned by
|
||||
// the `Decode*` functions with one exception: keys returned by the Undecoded
|
||||
// method will only reflect keys that were decoded. Namely, any keys hidden
|
||||
// behind a Primitive will be considered undecoded. Executing this method will
|
||||
// update the undecoded keys in the meta data. (See the example.)
|
||||
func (md *MetaData) PrimitiveDecode(primValue Primitive, v interface{}) error {
|
||||
md.context = primValue.context
|
||||
defer func() { md.context = nil }()
|
||||
return md.unify(primValue.undecoded, rvalue(v))
|
||||
}
|
||||
|
||||
// Decode will decode the contents of `data` in TOML format into a pointer
|
||||
// `v`.
|
||||
//
|
||||
// TOML hashes correspond to Go structs or maps. (Dealer's choice. They can be
|
||||
// used interchangeably.)
|
||||
//
|
||||
// TOML arrays of tables correspond to either a slice of structs or a slice
|
||||
// of maps.
|
||||
//
|
||||
// TOML datetimes correspond to Go `time.Time` values.
|
||||
//
|
||||
// All other TOML types (float, string, int, bool and array) correspond
|
||||
// to the obvious Go types.
|
||||
//
|
||||
// An exception to the above rules is if a type implements the
|
||||
// encoding.TextUnmarshaler interface. In this case, any primitive TOML value
|
||||
// (floats, strings, integers, booleans and datetimes) will be converted to
|
||||
// a byte string and given to the value's UnmarshalText method. See the
|
||||
// Unmarshaler example for a demonstration with time duration strings.
|
||||
//
|
||||
// Key mapping
|
||||
//
|
||||
// TOML keys can map to either keys in a Go map or field names in a Go
|
||||
// struct. The special `toml` struct tag may be used to map TOML keys to
|
||||
// struct fields that don't match the key name exactly. (See the example.)
|
||||
// A case insensitive match to struct names will be tried if an exact match
|
||||
// can't be found.
|
||||
//
|
||||
// The mapping between TOML values and Go values is loose. That is, there
|
||||
// may exist TOML values that cannot be placed into your representation, and
|
||||
// there may be parts of your representation that do not correspond to
|
||||
// TOML values. This loose mapping can be made stricter by using the IsDefined
|
||||
// and/or Undecoded methods on the MetaData returned.
|
||||
//
|
||||
// This decoder will not handle cyclic types. If a cyclic type is passed,
|
||||
// `Decode` will not terminate.
|
||||
func Decode(data string, v interface{}) (MetaData, error) {
|
||||
rv := reflect.ValueOf(v)
|
||||
if rv.Kind() != reflect.Ptr {
|
||||
return MetaData{}, e("Decode of non-pointer %s", reflect.TypeOf(v))
|
||||
}
|
||||
if rv.IsNil() {
|
||||
return MetaData{}, e("Decode of nil %s", reflect.TypeOf(v))
|
||||
}
|
||||
p, err := parse(data)
|
||||
if err != nil {
|
||||
return MetaData{}, err
|
||||
}
|
||||
md := MetaData{
|
||||
p.mapping, p.types, p.ordered,
|
||||
make(map[string]bool, len(p.ordered)), nil,
|
||||
}
|
||||
return md, md.unify(p.mapping, indirect(rv))
|
||||
}
|
||||
|
||||
// DecodeFile is just like Decode, except it will automatically read the
|
||||
// contents of the file at `fpath` and decode it for you.
|
||||
func DecodeFile(fpath string, v interface{}) (MetaData, error) {
|
||||
bs, err := ioutil.ReadFile(fpath)
|
||||
if err != nil {
|
||||
return MetaData{}, err
|
||||
}
|
||||
return Decode(string(bs), v)
|
||||
}
|
||||
|
||||
// DecodeReader is just like Decode, except it will consume all bytes
|
||||
// from the reader and decode it for you.
|
||||
func DecodeReader(r io.Reader, v interface{}) (MetaData, error) {
|
||||
bs, err := ioutil.ReadAll(r)
|
||||
if err != nil {
|
||||
return MetaData{}, err
|
||||
}
|
||||
return Decode(string(bs), v)
|
||||
}
|
||||
|
||||
// unify performs a sort of type unification based on the structure of `rv`,
|
||||
// which is the client representation.
|
||||
//
|
||||
// Any type mismatch produces an error. Finding a type that we don't know
|
||||
// how to handle produces an unsupported type error.
|
||||
func (md *MetaData) unify(data interface{}, rv reflect.Value) error {
|
||||
|
||||
// Special case. Look for a `Primitive` value.
|
||||
if rv.Type() == reflect.TypeOf((*Primitive)(nil)).Elem() {
|
||||
// Save the undecoded data and the key context into the primitive
|
||||
// value.
|
||||
context := make(Key, len(md.context))
|
||||
copy(context, md.context)
|
||||
rv.Set(reflect.ValueOf(Primitive{
|
||||
undecoded: data,
|
||||
context: context,
|
||||
}))
|
||||
return nil
|
||||
}
|
||||
|
||||
// Special case. Unmarshaler Interface support.
|
||||
if rv.CanAddr() {
|
||||
if v, ok := rv.Addr().Interface().(Unmarshaler); ok {
|
||||
return v.UnmarshalTOML(data)
|
||||
}
|
||||
}
|
||||
|
||||
// Special case. Handle time.Time values specifically.
|
||||
// TODO: Remove this code when we decide to drop support for Go 1.1.
|
||||
// This isn't necessary in Go 1.2 because time.Time satisfies the encoding
|
||||
// interfaces.
|
||||
if rv.Type().AssignableTo(rvalue(time.Time{}).Type()) {
|
||||
return md.unifyDatetime(data, rv)
|
||||
}
|
||||
|
||||
// Special case. Look for a value satisfying the TextUnmarshaler interface.
|
||||
if v, ok := rv.Interface().(TextUnmarshaler); ok {
|
||||
return md.unifyText(data, v)
|
||||
}
|
||||
// BUG(burntsushi)
|
||||
// The behavior here is incorrect whenever a Go type satisfies the
|
||||
// encoding.TextUnmarshaler interface but also corresponds to a TOML
|
||||
// hash or array. In particular, the unmarshaler should only be applied
|
||||
// to primitive TOML values. But at this point, it will be applied to
|
||||
// all kinds of values and produce an incorrect error whenever those values
|
||||
// are hashes or arrays (including arrays of tables).
|
||||
|
||||
k := rv.Kind()
|
||||
|
||||
// laziness
|
||||
if k >= reflect.Int && k <= reflect.Uint64 {
|
||||
return md.unifyInt(data, rv)
|
||||
}
|
||||
switch k {
|
||||
case reflect.Ptr:
|
||||
elem := reflect.New(rv.Type().Elem())
|
||||
err := md.unify(data, reflect.Indirect(elem))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
rv.Set(elem)
|
||||
return nil
|
||||
case reflect.Struct:
|
||||
return md.unifyStruct(data, rv)
|
||||
case reflect.Map:
|
||||
return md.unifyMap(data, rv)
|
||||
case reflect.Array:
|
||||
return md.unifyArray(data, rv)
|
||||
case reflect.Slice:
|
||||
return md.unifySlice(data, rv)
|
||||
case reflect.String:
|
||||
return md.unifyString(data, rv)
|
||||
case reflect.Bool:
|
||||
return md.unifyBool(data, rv)
|
||||
case reflect.Interface:
|
||||
// we only support empty interfaces.
|
||||
if rv.NumMethod() > 0 {
|
||||
return e("unsupported type %s", rv.Type())
|
||||
}
|
||||
return md.unifyAnything(data, rv)
|
||||
case reflect.Float32:
|
||||
fallthrough
|
||||
case reflect.Float64:
|
||||
return md.unifyFloat64(data, rv)
|
||||
}
|
||||
return e("unsupported type %s", rv.Kind())
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyStruct(mapping interface{}, rv reflect.Value) error {
|
||||
tmap, ok := mapping.(map[string]interface{})
|
||||
if !ok {
|
||||
if mapping == nil {
|
||||
return nil
|
||||
}
|
||||
return e("type mismatch for %s: expected table but found %T",
|
||||
rv.Type().String(), mapping)
|
||||
}
|
||||
|
||||
for key, datum := range tmap {
|
||||
var f *field
|
||||
fields := cachedTypeFields(rv.Type())
|
||||
for i := range fields {
|
||||
ff := &fields[i]
|
||||
if ff.name == key {
|
||||
f = ff
|
||||
break
|
||||
}
|
||||
if f == nil && strings.EqualFold(ff.name, key) {
|
||||
f = ff
|
||||
}
|
||||
}
|
||||
if f != nil {
|
||||
subv := rv
|
||||
for _, i := range f.index {
|
||||
subv = indirect(subv.Field(i))
|
||||
}
|
||||
if isUnifiable(subv) {
|
||||
md.decoded[md.context.add(key).String()] = true
|
||||
md.context = append(md.context, key)
|
||||
if err := md.unify(datum, subv); err != nil {
|
||||
return err
|
||||
}
|
||||
md.context = md.context[0 : len(md.context)-1]
|
||||
} else if f.name != "" {
|
||||
// Bad user! No soup for you!
|
||||
return e("cannot write unexported field %s.%s",
|
||||
rv.Type().String(), f.name)
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyMap(mapping interface{}, rv reflect.Value) error {
|
||||
tmap, ok := mapping.(map[string]interface{})
|
||||
if !ok {
|
||||
if tmap == nil {
|
||||
return nil
|
||||
}
|
||||
return badtype("map", mapping)
|
||||
}
|
||||
if rv.IsNil() {
|
||||
rv.Set(reflect.MakeMap(rv.Type()))
|
||||
}
|
||||
for k, v := range tmap {
|
||||
md.decoded[md.context.add(k).String()] = true
|
||||
md.context = append(md.context, k)
|
||||
|
||||
rvkey := indirect(reflect.New(rv.Type().Key()))
|
||||
rvval := reflect.Indirect(reflect.New(rv.Type().Elem()))
|
||||
if err := md.unify(v, rvval); err != nil {
|
||||
return err
|
||||
}
|
||||
md.context = md.context[0 : len(md.context)-1]
|
||||
|
||||
rvkey.SetString(k)
|
||||
rv.SetMapIndex(rvkey, rvval)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyArray(data interface{}, rv reflect.Value) error {
|
||||
datav := reflect.ValueOf(data)
|
||||
if datav.Kind() != reflect.Slice {
|
||||
if !datav.IsValid() {
|
||||
return nil
|
||||
}
|
||||
return badtype("slice", data)
|
||||
}
|
||||
sliceLen := datav.Len()
|
||||
if sliceLen != rv.Len() {
|
||||
return e("expected array length %d; got TOML array of length %d",
|
||||
rv.Len(), sliceLen)
|
||||
}
|
||||
return md.unifySliceArray(datav, rv)
|
||||
}
|
||||
|
||||
func (md *MetaData) unifySlice(data interface{}, rv reflect.Value) error {
|
||||
datav := reflect.ValueOf(data)
|
||||
if datav.Kind() != reflect.Slice {
|
||||
if !datav.IsValid() {
|
||||
return nil
|
||||
}
|
||||
return badtype("slice", data)
|
||||
}
|
||||
n := datav.Len()
|
||||
if rv.IsNil() || rv.Cap() < n {
|
||||
rv.Set(reflect.MakeSlice(rv.Type(), n, n))
|
||||
}
|
||||
rv.SetLen(n)
|
||||
return md.unifySliceArray(datav, rv)
|
||||
}
|
||||
|
||||
func (md *MetaData) unifySliceArray(data, rv reflect.Value) error {
|
||||
sliceLen := data.Len()
|
||||
for i := 0; i < sliceLen; i++ {
|
||||
v := data.Index(i).Interface()
|
||||
sliceval := indirect(rv.Index(i))
|
||||
if err := md.unify(v, sliceval); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyDatetime(data interface{}, rv reflect.Value) error {
|
||||
if _, ok := data.(time.Time); ok {
|
||||
rv.Set(reflect.ValueOf(data))
|
||||
return nil
|
||||
}
|
||||
return badtype("time.Time", data)
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyString(data interface{}, rv reflect.Value) error {
|
||||
if s, ok := data.(string); ok {
|
||||
rv.SetString(s)
|
||||
return nil
|
||||
}
|
||||
return badtype("string", data)
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyFloat64(data interface{}, rv reflect.Value) error {
|
||||
if num, ok := data.(float64); ok {
|
||||
switch rv.Kind() {
|
||||
case reflect.Float32:
|
||||
fallthrough
|
||||
case reflect.Float64:
|
||||
rv.SetFloat(num)
|
||||
default:
|
||||
panic("bug")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
return badtype("float", data)
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyInt(data interface{}, rv reflect.Value) error {
|
||||
if num, ok := data.(int64); ok {
|
||||
if rv.Kind() >= reflect.Int && rv.Kind() <= reflect.Int64 {
|
||||
switch rv.Kind() {
|
||||
case reflect.Int, reflect.Int64:
|
||||
// No bounds checking necessary.
|
||||
case reflect.Int8:
|
||||
if num < math.MinInt8 || num > math.MaxInt8 {
|
||||
return e("value %d is out of range for int8", num)
|
||||
}
|
||||
case reflect.Int16:
|
||||
if num < math.MinInt16 || num > math.MaxInt16 {
|
||||
return e("value %d is out of range for int16", num)
|
||||
}
|
||||
case reflect.Int32:
|
||||
if num < math.MinInt32 || num > math.MaxInt32 {
|
||||
return e("value %d is out of range for int32", num)
|
||||
}
|
||||
}
|
||||
rv.SetInt(num)
|
||||
} else if rv.Kind() >= reflect.Uint && rv.Kind() <= reflect.Uint64 {
|
||||
unum := uint64(num)
|
||||
switch rv.Kind() {
|
||||
case reflect.Uint, reflect.Uint64:
|
||||
// No bounds checking necessary.
|
||||
case reflect.Uint8:
|
||||
if num < 0 || unum > math.MaxUint8 {
|
||||
return e("value %d is out of range for uint8", num)
|
||||
}
|
||||
case reflect.Uint16:
|
||||
if num < 0 || unum > math.MaxUint16 {
|
||||
return e("value %d is out of range for uint16", num)
|
||||
}
|
||||
case reflect.Uint32:
|
||||
if num < 0 || unum > math.MaxUint32 {
|
||||
return e("value %d is out of range for uint32", num)
|
||||
}
|
||||
}
|
||||
rv.SetUint(unum)
|
||||
} else {
|
||||
panic("unreachable")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
return badtype("integer", data)
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyBool(data interface{}, rv reflect.Value) error {
|
||||
if b, ok := data.(bool); ok {
|
||||
rv.SetBool(b)
|
||||
return nil
|
||||
}
|
||||
return badtype("boolean", data)
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyAnything(data interface{}, rv reflect.Value) error {
|
||||
rv.Set(reflect.ValueOf(data))
|
||||
return nil
|
||||
}
|
||||
|
||||
func (md *MetaData) unifyText(data interface{}, v TextUnmarshaler) error {
|
||||
var s string
|
||||
switch sdata := data.(type) {
|
||||
case TextMarshaler:
|
||||
text, err := sdata.MarshalText()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
s = string(text)
|
||||
case fmt.Stringer:
|
||||
s = sdata.String()
|
||||
case string:
|
||||
s = sdata
|
||||
case bool:
|
||||
s = fmt.Sprintf("%v", sdata)
|
||||
case int64:
|
||||
s = fmt.Sprintf("%d", sdata)
|
||||
case float64:
|
||||
s = fmt.Sprintf("%f", sdata)
|
||||
default:
|
||||
return badtype("primitive (string-like)", data)
|
||||
}
|
||||
if err := v.UnmarshalText([]byte(s)); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// rvalue returns a reflect.Value of `v`. All pointers are resolved.
|
||||
func rvalue(v interface{}) reflect.Value {
|
||||
return indirect(reflect.ValueOf(v))
|
||||
}
|
||||
|
||||
// indirect returns the value pointed to by a pointer.
|
||||
// Pointers are followed until the value is not a pointer.
|
||||
// New values are allocated for each nil pointer.
|
||||
//
|
||||
// An exception to this rule is if the value satisfies an interface of
|
||||
// interest to us (like encoding.TextUnmarshaler).
|
||||
func indirect(v reflect.Value) reflect.Value {
|
||||
if v.Kind() != reflect.Ptr {
|
||||
if v.CanSet() {
|
||||
pv := v.Addr()
|
||||
if _, ok := pv.Interface().(TextUnmarshaler); ok {
|
||||
return pv
|
||||
}
|
||||
}
|
||||
return v
|
||||
}
|
||||
if v.IsNil() {
|
||||
v.Set(reflect.New(v.Type().Elem()))
|
||||
}
|
||||
return indirect(reflect.Indirect(v))
|
||||
}
|
||||
|
||||
func isUnifiable(rv reflect.Value) bool {
|
||||
if rv.CanSet() {
|
||||
return true
|
||||
}
|
||||
if _, ok := rv.Interface().(TextUnmarshaler); ok {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func badtype(expected string, data interface{}) error {
|
||||
return e("cannot load TOML value of type %T into a Go %s", data, expected)
|
||||
}
|
||||
|
|
@ -0,0 +1,121 @@
|
|||
package toml
|
||||
|
||||
import "strings"
|
||||
|
||||
// MetaData allows access to meta information about TOML data that may not
|
||||
// be inferrable via reflection. In particular, whether a key has been defined
|
||||
// and the TOML type of a key.
|
||||
type MetaData struct {
|
||||
mapping map[string]interface{}
|
||||
types map[string]tomlType
|
||||
keys []Key
|
||||
decoded map[string]bool
|
||||
context Key // Used only during decoding.
|
||||
}
|
||||
|
||||
// IsDefined returns true if the key given exists in the TOML data. The key
|
||||
// should be specified hierarchially. e.g.,
|
||||
//
|
||||
// // access the TOML key 'a.b.c'
|
||||
// IsDefined("a", "b", "c")
|
||||
//
|
||||
// IsDefined will return false if an empty key given. Keys are case sensitive.
|
||||
func (md *MetaData) IsDefined(key ...string) bool {
|
||||
if len(key) == 0 {
|
||||
return false
|
||||
}
|
||||
|
||||
var hash map[string]interface{}
|
||||
var ok bool
|
||||
var hashOrVal interface{} = md.mapping
|
||||
for _, k := range key {
|
||||
if hash, ok = hashOrVal.(map[string]interface{}); !ok {
|
||||
return false
|
||||
}
|
||||
if hashOrVal, ok = hash[k]; !ok {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Type returns a string representation of the type of the key specified.
|
||||
//
|
||||
// Type will return the empty string if given an empty key or a key that
|
||||
// does not exist. Keys are case sensitive.
|
||||
func (md *MetaData) Type(key ...string) string {
|
||||
fullkey := strings.Join(key, ".")
|
||||
if typ, ok := md.types[fullkey]; ok {
|
||||
return typ.typeString()
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
// Key is the type of any TOML key, including key groups. Use (MetaData).Keys
|
||||
// to get values of this type.
|
||||
type Key []string
|
||||
|
||||
func (k Key) String() string {
|
||||
return strings.Join(k, ".")
|
||||
}
|
||||
|
||||
func (k Key) maybeQuotedAll() string {
|
||||
var ss []string
|
||||
for i := range k {
|
||||
ss = append(ss, k.maybeQuoted(i))
|
||||
}
|
||||
return strings.Join(ss, ".")
|
||||
}
|
||||
|
||||
func (k Key) maybeQuoted(i int) string {
|
||||
quote := false
|
||||
for _, c := range k[i] {
|
||||
if !isBareKeyChar(c) {
|
||||
quote = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if quote {
|
||||
return "\"" + strings.Replace(k[i], "\"", "\\\"", -1) + "\""
|
||||
}
|
||||
return k[i]
|
||||
}
|
||||
|
||||
func (k Key) add(piece string) Key {
|
||||
newKey := make(Key, len(k)+1)
|
||||
copy(newKey, k)
|
||||
newKey[len(k)] = piece
|
||||
return newKey
|
||||
}
|
||||
|
||||
// Keys returns a slice of every key in the TOML data, including key groups.
|
||||
// Each key is itself a slice, where the first element is the top of the
|
||||
// hierarchy and the last is the most specific.
|
||||
//
|
||||
// The list will have the same order as the keys appeared in the TOML data.
|
||||
//
|
||||
// All keys returned are non-empty.
|
||||
func (md *MetaData) Keys() []Key {
|
||||
return md.keys
|
||||
}
|
||||
|
||||
// Undecoded returns all keys that have not been decoded in the order in which
|
||||
// they appear in the original TOML document.
|
||||
//
|
||||
// This includes keys that haven't been decoded because of a Primitive value.
|
||||
// Once the Primitive value is decoded, the keys will be considered decoded.
|
||||
//
|
||||
// Also note that decoding into an empty interface will result in no decoding,
|
||||
// and so no keys will be considered decoded.
|
||||
//
|
||||
// In this sense, the Undecoded keys correspond to keys in the TOML document
|
||||
// that do not have a concrete type in your representation.
|
||||
func (md *MetaData) Undecoded() []Key {
|
||||
undecoded := make([]Key, 0, len(md.keys))
|
||||
for _, key := range md.keys {
|
||||
if !md.decoded[key.String()] {
|
||||
undecoded = append(undecoded, key)
|
||||
}
|
||||
}
|
||||
return undecoded
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
/*
|
||||
Package toml provides facilities for decoding and encoding TOML configuration
|
||||
files via reflection. There is also support for delaying decoding with
|
||||
the Primitive type, and querying the set of keys in a TOML document with the
|
||||
MetaData type.
|
||||
|
||||
The specification implemented: https://github.com/toml-lang/toml
|
||||
|
||||
The sub-command github.com/BurntSushi/toml/cmd/tomlv can be used to verify
|
||||
whether a file is a valid TOML document. It can also be used to print the
|
||||
type of each key in a TOML document.
|
||||
|
||||
Testing
|
||||
|
||||
There are two important types of tests used for this package. The first is
|
||||
contained inside '*_test.go' files and uses the standard Go unit testing
|
||||
framework. These tests are primarily devoted to holistically testing the
|
||||
decoder and encoder.
|
||||
|
||||
The second type of testing is used to verify the implementation's adherence
|
||||
to the TOML specification. These tests have been factored into their own
|
||||
project: https://github.com/BurntSushi/toml-test
|
||||
|
||||
The reason the tests are in a separate project is so that they can be used by
|
||||
any implementation of TOML. Namely, it is language agnostic.
|
||||
*/
|
||||
package toml
|
||||
|
|
@ -0,0 +1,568 @@
|
|||
package toml
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"reflect"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
)
|
||||
|
||||
type tomlEncodeError struct{ error }
|
||||
|
||||
var (
|
||||
errArrayMixedElementTypes = errors.New(
|
||||
"toml: cannot encode array with mixed element types")
|
||||
errArrayNilElement = errors.New(
|
||||
"toml: cannot encode array with nil element")
|
||||
errNonString = errors.New(
|
||||
"toml: cannot encode a map with non-string key type")
|
||||
errAnonNonStruct = errors.New(
|
||||
"toml: cannot encode an anonymous field that is not a struct")
|
||||
errArrayNoTable = errors.New(
|
||||
"toml: TOML array element cannot contain a table")
|
||||
errNoKey = errors.New(
|
||||
"toml: top-level values must be Go maps or structs")
|
||||
errAnything = errors.New("") // used in testing
|
||||
)
|
||||
|
||||
var quotedReplacer = strings.NewReplacer(
|
||||
"\t", "\\t",
|
||||
"\n", "\\n",
|
||||
"\r", "\\r",
|
||||
"\"", "\\\"",
|
||||
"\\", "\\\\",
|
||||
)
|
||||
|
||||
// Encoder controls the encoding of Go values to a TOML document to some
|
||||
// io.Writer.
|
||||
//
|
||||
// The indentation level can be controlled with the Indent field.
|
||||
type Encoder struct {
|
||||
// A single indentation level. By default it is two spaces.
|
||||
Indent string
|
||||
|
||||
// hasWritten is whether we have written any output to w yet.
|
||||
hasWritten bool
|
||||
w *bufio.Writer
|
||||
}
|
||||
|
||||
// NewEncoder returns a TOML encoder that encodes Go values to the io.Writer
|
||||
// given. By default, a single indentation level is 2 spaces.
|
||||
func NewEncoder(w io.Writer) *Encoder {
|
||||
return &Encoder{
|
||||
w: bufio.NewWriter(w),
|
||||
Indent: " ",
|
||||
}
|
||||
}
|
||||
|
||||
// Encode writes a TOML representation of the Go value to the underlying
|
||||
// io.Writer. If the value given cannot be encoded to a valid TOML document,
|
||||
// then an error is returned.
|
||||
//
|
||||
// The mapping between Go values and TOML values should be precisely the same
|
||||
// as for the Decode* functions. Similarly, the TextMarshaler interface is
|
||||
// supported by encoding the resulting bytes as strings. (If you want to write
|
||||
// arbitrary binary data then you will need to use something like base64 since
|
||||
// TOML does not have any binary types.)
|
||||
//
|
||||
// When encoding TOML hashes (i.e., Go maps or structs), keys without any
|
||||
// sub-hashes are encoded first.
|
||||
//
|
||||
// If a Go map is encoded, then its keys are sorted alphabetically for
|
||||
// deterministic output. More control over this behavior may be provided if
|
||||
// there is demand for it.
|
||||
//
|
||||
// Encoding Go values without a corresponding TOML representation---like map
|
||||
// types with non-string keys---will cause an error to be returned. Similarly
|
||||
// for mixed arrays/slices, arrays/slices with nil elements, embedded
|
||||
// non-struct types and nested slices containing maps or structs.
|
||||
// (e.g., [][]map[string]string is not allowed but []map[string]string is OK
|
||||
// and so is []map[string][]string.)
|
||||
func (enc *Encoder) Encode(v interface{}) error {
|
||||
rv := eindirect(reflect.ValueOf(v))
|
||||
if err := enc.safeEncode(Key([]string{}), rv); err != nil {
|
||||
return err
|
||||
}
|
||||
return enc.w.Flush()
|
||||
}
|
||||
|
||||
func (enc *Encoder) safeEncode(key Key, rv reflect.Value) (err error) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
if terr, ok := r.(tomlEncodeError); ok {
|
||||
err = terr.error
|
||||
return
|
||||
}
|
||||
panic(r)
|
||||
}
|
||||
}()
|
||||
enc.encode(key, rv)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (enc *Encoder) encode(key Key, rv reflect.Value) {
|
||||
// Special case. Time needs to be in ISO8601 format.
|
||||
// Special case. If we can marshal the type to text, then we used that.
|
||||
// Basically, this prevents the encoder for handling these types as
|
||||
// generic structs (or whatever the underlying type of a TextMarshaler is).
|
||||
switch rv.Interface().(type) {
|
||||
case time.Time, TextMarshaler:
|
||||
enc.keyEqElement(key, rv)
|
||||
return
|
||||
}
|
||||
|
||||
k := rv.Kind()
|
||||
switch k {
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
|
||||
reflect.Int64,
|
||||
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32,
|
||||
reflect.Uint64,
|
||||
reflect.Float32, reflect.Float64, reflect.String, reflect.Bool:
|
||||
enc.keyEqElement(key, rv)
|
||||
case reflect.Array, reflect.Slice:
|
||||
if typeEqual(tomlArrayHash, tomlTypeOfGo(rv)) {
|
||||
enc.eArrayOfTables(key, rv)
|
||||
} else {
|
||||
enc.keyEqElement(key, rv)
|
||||
}
|
||||
case reflect.Interface:
|
||||
if rv.IsNil() {
|
||||
return
|
||||
}
|
||||
enc.encode(key, rv.Elem())
|
||||
case reflect.Map:
|
||||
if rv.IsNil() {
|
||||
return
|
||||
}
|
||||
enc.eTable(key, rv)
|
||||
case reflect.Ptr:
|
||||
if rv.IsNil() {
|
||||
return
|
||||
}
|
||||
enc.encode(key, rv.Elem())
|
||||
case reflect.Struct:
|
||||
enc.eTable(key, rv)
|
||||
default:
|
||||
panic(e("unsupported type for key '%s': %s", key, k))
|
||||
}
|
||||
}
|
||||
|
||||
// eElement encodes any value that can be an array element (primitives and
|
||||
// arrays).
|
||||
func (enc *Encoder) eElement(rv reflect.Value) {
|
||||
switch v := rv.Interface().(type) {
|
||||
case time.Time:
|
||||
// Special case time.Time as a primitive. Has to come before
|
||||
// TextMarshaler below because time.Time implements
|
||||
// encoding.TextMarshaler, but we need to always use UTC.
|
||||
enc.wf(v.UTC().Format("2006-01-02T15:04:05Z"))
|
||||
return
|
||||
case TextMarshaler:
|
||||
// Special case. Use text marshaler if it's available for this value.
|
||||
if s, err := v.MarshalText(); err != nil {
|
||||
encPanic(err)
|
||||
} else {
|
||||
enc.writeQuoted(string(s))
|
||||
}
|
||||
return
|
||||
}
|
||||
switch rv.Kind() {
|
||||
case reflect.Bool:
|
||||
enc.wf(strconv.FormatBool(rv.Bool()))
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
|
||||
reflect.Int64:
|
||||
enc.wf(strconv.FormatInt(rv.Int(), 10))
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16,
|
||||
reflect.Uint32, reflect.Uint64:
|
||||
enc.wf(strconv.FormatUint(rv.Uint(), 10))
|
||||
case reflect.Float32:
|
||||
enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 32)))
|
||||
case reflect.Float64:
|
||||
enc.wf(floatAddDecimal(strconv.FormatFloat(rv.Float(), 'f', -1, 64)))
|
||||
case reflect.Array, reflect.Slice:
|
||||
enc.eArrayOrSliceElement(rv)
|
||||
case reflect.Interface:
|
||||
enc.eElement(rv.Elem())
|
||||
case reflect.String:
|
||||
enc.writeQuoted(rv.String())
|
||||
default:
|
||||
panic(e("unexpected primitive type: %s", rv.Kind()))
|
||||
}
|
||||
}
|
||||
|
||||
// By the TOML spec, all floats must have a decimal with at least one
|
||||
// number on either side.
|
||||
func floatAddDecimal(fstr string) string {
|
||||
if !strings.Contains(fstr, ".") {
|
||||
return fstr + ".0"
|
||||
}
|
||||
return fstr
|
||||
}
|
||||
|
||||
func (enc *Encoder) writeQuoted(s string) {
|
||||
enc.wf("\"%s\"", quotedReplacer.Replace(s))
|
||||
}
|
||||
|
||||
func (enc *Encoder) eArrayOrSliceElement(rv reflect.Value) {
|
||||
length := rv.Len()
|
||||
enc.wf("[")
|
||||
for i := 0; i < length; i++ {
|
||||
elem := rv.Index(i)
|
||||
enc.eElement(elem)
|
||||
if i != length-1 {
|
||||
enc.wf(", ")
|
||||
}
|
||||
}
|
||||
enc.wf("]")
|
||||
}
|
||||
|
||||
func (enc *Encoder) eArrayOfTables(key Key, rv reflect.Value) {
|
||||
if len(key) == 0 {
|
||||
encPanic(errNoKey)
|
||||
}
|
||||
for i := 0; i < rv.Len(); i++ {
|
||||
trv := rv.Index(i)
|
||||
if isNil(trv) {
|
||||
continue
|
||||
}
|
||||
panicIfInvalidKey(key)
|
||||
enc.newline()
|
||||
enc.wf("%s[[%s]]", enc.indentStr(key), key.maybeQuotedAll())
|
||||
enc.newline()
|
||||
enc.eMapOrStruct(key, trv)
|
||||
}
|
||||
}
|
||||
|
||||
func (enc *Encoder) eTable(key Key, rv reflect.Value) {
|
||||
panicIfInvalidKey(key)
|
||||
if len(key) == 1 {
|
||||
// Output an extra newline between top-level tables.
|
||||
// (The newline isn't written if nothing else has been written though.)
|
||||
enc.newline()
|
||||
}
|
||||
if len(key) > 0 {
|
||||
enc.wf("%s[%s]", enc.indentStr(key), key.maybeQuotedAll())
|
||||
enc.newline()
|
||||
}
|
||||
enc.eMapOrStruct(key, rv)
|
||||
}
|
||||
|
||||
func (enc *Encoder) eMapOrStruct(key Key, rv reflect.Value) {
|
||||
switch rv := eindirect(rv); rv.Kind() {
|
||||
case reflect.Map:
|
||||
enc.eMap(key, rv)
|
||||
case reflect.Struct:
|
||||
enc.eStruct(key, rv)
|
||||
default:
|
||||
panic("eTable: unhandled reflect.Value Kind: " + rv.Kind().String())
|
||||
}
|
||||
}
|
||||
|
||||
func (enc *Encoder) eMap(key Key, rv reflect.Value) {
|
||||
rt := rv.Type()
|
||||
if rt.Key().Kind() != reflect.String {
|
||||
encPanic(errNonString)
|
||||
}
|
||||
|
||||
// Sort keys so that we have deterministic output. And write keys directly
|
||||
// underneath this key first, before writing sub-structs or sub-maps.
|
||||
var mapKeysDirect, mapKeysSub []string
|
||||
for _, mapKey := range rv.MapKeys() {
|
||||
k := mapKey.String()
|
||||
if typeIsHash(tomlTypeOfGo(rv.MapIndex(mapKey))) {
|
||||
mapKeysSub = append(mapKeysSub, k)
|
||||
} else {
|
||||
mapKeysDirect = append(mapKeysDirect, k)
|
||||
}
|
||||
}
|
||||
|
||||
var writeMapKeys = func(mapKeys []string) {
|
||||
sort.Strings(mapKeys)
|
||||
for _, mapKey := range mapKeys {
|
||||
mrv := rv.MapIndex(reflect.ValueOf(mapKey))
|
||||
if isNil(mrv) {
|
||||
// Don't write anything for nil fields.
|
||||
continue
|
||||
}
|
||||
enc.encode(key.add(mapKey), mrv)
|
||||
}
|
||||
}
|
||||
writeMapKeys(mapKeysDirect)
|
||||
writeMapKeys(mapKeysSub)
|
||||
}
|
||||
|
||||
func (enc *Encoder) eStruct(key Key, rv reflect.Value) {
|
||||
// Write keys for fields directly under this key first, because if we write
|
||||
// a field that creates a new table, then all keys under it will be in that
|
||||
// table (not the one we're writing here).
|
||||
rt := rv.Type()
|
||||
var fieldsDirect, fieldsSub [][]int
|
||||
var addFields func(rt reflect.Type, rv reflect.Value, start []int)
|
||||
addFields = func(rt reflect.Type, rv reflect.Value, start []int) {
|
||||
for i := 0; i < rt.NumField(); i++ {
|
||||
f := rt.Field(i)
|
||||
// skip unexported fields
|
||||
if f.PkgPath != "" && !f.Anonymous {
|
||||
continue
|
||||
}
|
||||
frv := rv.Field(i)
|
||||
if f.Anonymous {
|
||||
t := f.Type
|
||||
switch t.Kind() {
|
||||
case reflect.Struct:
|
||||
// Treat anonymous struct fields with
|
||||
// tag names as though they are not
|
||||
// anonymous, like encoding/json does.
|
||||
if getOptions(f.Tag).name == "" {
|
||||
addFields(t, frv, f.Index)
|
||||
continue
|
||||
}
|
||||
case reflect.Ptr:
|
||||
if t.Elem().Kind() == reflect.Struct &&
|
||||
getOptions(f.Tag).name == "" {
|
||||
if !frv.IsNil() {
|
||||
addFields(t.Elem(), frv.Elem(), f.Index)
|
||||
}
|
||||
continue
|
||||
}
|
||||
// Fall through to the normal field encoding logic below
|
||||
// for non-struct anonymous fields.
|
||||
}
|
||||
}
|
||||
|
||||
if typeIsHash(tomlTypeOfGo(frv)) {
|
||||
fieldsSub = append(fieldsSub, append(start, f.Index...))
|
||||
} else {
|
||||
fieldsDirect = append(fieldsDirect, append(start, f.Index...))
|
||||
}
|
||||
}
|
||||
}
|
||||
addFields(rt, rv, nil)
|
||||
|
||||
var writeFields = func(fields [][]int) {
|
||||
for _, fieldIndex := range fields {
|
||||
sft := rt.FieldByIndex(fieldIndex)
|
||||
sf := rv.FieldByIndex(fieldIndex)
|
||||
if isNil(sf) {
|
||||
// Don't write anything for nil fields.
|
||||
continue
|
||||
}
|
||||
|
||||
opts := getOptions(sft.Tag)
|
||||
if opts.skip {
|
||||
continue
|
||||
}
|
||||
keyName := sft.Name
|
||||
if opts.name != "" {
|
||||
keyName = opts.name
|
||||
}
|
||||
if opts.omitempty && isEmpty(sf) {
|
||||
continue
|
||||
}
|
||||
if opts.omitzero && isZero(sf) {
|
||||
continue
|
||||
}
|
||||
|
||||
enc.encode(key.add(keyName), sf)
|
||||
}
|
||||
}
|
||||
writeFields(fieldsDirect)
|
||||
writeFields(fieldsSub)
|
||||
}
|
||||
|
||||
// tomlTypeName returns the TOML type name of the Go value's type. It is
|
||||
// used to determine whether the types of array elements are mixed (which is
|
||||
// forbidden). If the Go value is nil, then it is illegal for it to be an array
|
||||
// element, and valueIsNil is returned as true.
|
||||
|
||||
// Returns the TOML type of a Go value. The type may be `nil`, which means
|
||||
// no concrete TOML type could be found.
|
||||
func tomlTypeOfGo(rv reflect.Value) tomlType {
|
||||
if isNil(rv) || !rv.IsValid() {
|
||||
return nil
|
||||
}
|
||||
switch rv.Kind() {
|
||||
case reflect.Bool:
|
||||
return tomlBool
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32,
|
||||
reflect.Int64,
|
||||
reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32,
|
||||
reflect.Uint64:
|
||||
return tomlInteger
|
||||
case reflect.Float32, reflect.Float64:
|
||||
return tomlFloat
|
||||
case reflect.Array, reflect.Slice:
|
||||
if typeEqual(tomlHash, tomlArrayType(rv)) {
|
||||
return tomlArrayHash
|
||||
}
|
||||
return tomlArray
|
||||
case reflect.Ptr, reflect.Interface:
|
||||
return tomlTypeOfGo(rv.Elem())
|
||||
case reflect.String:
|
||||
return tomlString
|
||||
case reflect.Map:
|
||||
return tomlHash
|
||||
case reflect.Struct:
|
||||
switch rv.Interface().(type) {
|
||||
case time.Time:
|
||||
return tomlDatetime
|
||||
case TextMarshaler:
|
||||
return tomlString
|
||||
default:
|
||||
return tomlHash
|
||||
}
|
||||
default:
|
||||
panic("unexpected reflect.Kind: " + rv.Kind().String())
|
||||
}
|
||||
}
|
||||
|
||||
// tomlArrayType returns the element type of a TOML array. The type returned
|
||||
// may be nil if it cannot be determined (e.g., a nil slice or a zero length
|
||||
// slize). This function may also panic if it finds a type that cannot be
|
||||
// expressed in TOML (such as nil elements, heterogeneous arrays or directly
|
||||
// nested arrays of tables).
|
||||
func tomlArrayType(rv reflect.Value) tomlType {
|
||||
if isNil(rv) || !rv.IsValid() || rv.Len() == 0 {
|
||||
return nil
|
||||
}
|
||||
firstType := tomlTypeOfGo(rv.Index(0))
|
||||
if firstType == nil {
|
||||
encPanic(errArrayNilElement)
|
||||
}
|
||||
|
||||
rvlen := rv.Len()
|
||||
for i := 1; i < rvlen; i++ {
|
||||
elem := rv.Index(i)
|
||||
switch elemType := tomlTypeOfGo(elem); {
|
||||
case elemType == nil:
|
||||
encPanic(errArrayNilElement)
|
||||
case !typeEqual(firstType, elemType):
|
||||
encPanic(errArrayMixedElementTypes)
|
||||
}
|
||||
}
|
||||
// If we have a nested array, then we must make sure that the nested
|
||||
// array contains ONLY primitives.
|
||||
// This checks arbitrarily nested arrays.
|
||||
if typeEqual(firstType, tomlArray) || typeEqual(firstType, tomlArrayHash) {
|
||||
nest := tomlArrayType(eindirect(rv.Index(0)))
|
||||
if typeEqual(nest, tomlHash) || typeEqual(nest, tomlArrayHash) {
|
||||
encPanic(errArrayNoTable)
|
||||
}
|
||||
}
|
||||
return firstType
|
||||
}
|
||||
|
||||
type tagOptions struct {
|
||||
skip bool // "-"
|
||||
name string
|
||||
omitempty bool
|
||||
omitzero bool
|
||||
}
|
||||
|
||||
func getOptions(tag reflect.StructTag) tagOptions {
|
||||
t := tag.Get("toml")
|
||||
if t == "-" {
|
||||
return tagOptions{skip: true}
|
||||
}
|
||||
var opts tagOptions
|
||||
parts := strings.Split(t, ",")
|
||||
opts.name = parts[0]
|
||||
for _, s := range parts[1:] {
|
||||
switch s {
|
||||
case "omitempty":
|
||||
opts.omitempty = true
|
||||
case "omitzero":
|
||||
opts.omitzero = true
|
||||
}
|
||||
}
|
||||
return opts
|
||||
}
|
||||
|
||||
func isZero(rv reflect.Value) bool {
|
||||
switch rv.Kind() {
|
||||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
|
||||
return rv.Int() == 0
|
||||
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
|
||||
return rv.Uint() == 0
|
||||
case reflect.Float32, reflect.Float64:
|
||||
return rv.Float() == 0.0
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func isEmpty(rv reflect.Value) bool {
|
||||
switch rv.Kind() {
|
||||
case reflect.Array, reflect.Slice, reflect.Map, reflect.String:
|
||||
return rv.Len() == 0
|
||||
case reflect.Bool:
|
||||
return !rv.Bool()
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (enc *Encoder) newline() {
|
||||
if enc.hasWritten {
|
||||
enc.wf("\n")
|
||||
}
|
||||
}
|
||||
|
||||
func (enc *Encoder) keyEqElement(key Key, val reflect.Value) {
|
||||
if len(key) == 0 {
|
||||
encPanic(errNoKey)
|
||||
}
|
||||
panicIfInvalidKey(key)
|
||||
enc.wf("%s%s = ", enc.indentStr(key), key.maybeQuoted(len(key)-1))
|
||||
enc.eElement(val)
|
||||
enc.newline()
|
||||
}
|
||||
|
||||
func (enc *Encoder) wf(format string, v ...interface{}) {
|
||||
if _, err := fmt.Fprintf(enc.w, format, v...); err != nil {
|
||||
encPanic(err)
|
||||
}
|
||||
enc.hasWritten = true
|
||||
}
|
||||
|
||||
func (enc *Encoder) indentStr(key Key) string {
|
||||
return strings.Repeat(enc.Indent, len(key)-1)
|
||||
}
|
||||
|
||||
func encPanic(err error) {
|
||||
panic(tomlEncodeError{err})
|
||||
}
|
||||
|
||||
func eindirect(v reflect.Value) reflect.Value {
|
||||
switch v.Kind() {
|
||||
case reflect.Ptr, reflect.Interface:
|
||||
return eindirect(v.Elem())
|
||||
default:
|
||||
return v
|
||||
}
|
||||
}
|
||||
|
||||
func isNil(rv reflect.Value) bool {
|
||||
switch rv.Kind() {
|
||||
case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
|
||||
return rv.IsNil()
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
func panicIfInvalidKey(key Key) {
|
||||
for _, k := range key {
|
||||
if len(k) == 0 {
|
||||
encPanic(e("Key '%s' is not a valid table name. Key names "+
|
||||
"cannot be empty.", key.maybeQuotedAll()))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func isValidKeyName(s string) bool {
|
||||
return len(s) != 0
|
||||
}
|
||||
|
|
@ -0,0 +1,19 @@
|
|||
// +build go1.2
|
||||
|
||||
package toml
|
||||
|
||||
// In order to support Go 1.1, we define our own TextMarshaler and
|
||||
// TextUnmarshaler types. For Go 1.2+, we just alias them with the
|
||||
// standard library interfaces.
|
||||
|
||||
import (
|
||||
"encoding"
|
||||
)
|
||||
|
||||
// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here
|
||||
// so that Go 1.1 can be supported.
|
||||
type TextMarshaler encoding.TextMarshaler
|
||||
|
||||
// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined
|
||||
// here so that Go 1.1 can be supported.
|
||||
type TextUnmarshaler encoding.TextUnmarshaler
|
||||
|
|
@ -0,0 +1,18 @@
|
|||
// +build !go1.2
|
||||
|
||||
package toml
|
||||
|
||||
// These interfaces were introduced in Go 1.2, so we add them manually when
|
||||
// compiling for Go 1.1.
|
||||
|
||||
// TextMarshaler is a synonym for encoding.TextMarshaler. It is defined here
|
||||
// so that Go 1.1 can be supported.
|
||||
type TextMarshaler interface {
|
||||
MarshalText() (text []byte, err error)
|
||||
}
|
||||
|
||||
// TextUnmarshaler is a synonym for encoding.TextUnmarshaler. It is defined
|
||||
// here so that Go 1.1 can be supported.
|
||||
type TextUnmarshaler interface {
|
||||
UnmarshalText(text []byte) error
|
||||
}
|
||||
|
|
@ -0,0 +1,953 @@
|
|||
package toml
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strings"
|
||||
"unicode"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
type itemType int
|
||||
|
||||
const (
|
||||
itemError itemType = iota
|
||||
itemNIL // used in the parser to indicate no type
|
||||
itemEOF
|
||||
itemText
|
||||
itemString
|
||||
itemRawString
|
||||
itemMultilineString
|
||||
itemRawMultilineString
|
||||
itemBool
|
||||
itemInteger
|
||||
itemFloat
|
||||
itemDatetime
|
||||
itemArray // the start of an array
|
||||
itemArrayEnd
|
||||
itemTableStart
|
||||
itemTableEnd
|
||||
itemArrayTableStart
|
||||
itemArrayTableEnd
|
||||
itemKeyStart
|
||||
itemCommentStart
|
||||
itemInlineTableStart
|
||||
itemInlineTableEnd
|
||||
)
|
||||
|
||||
const (
|
||||
eof = 0
|
||||
comma = ','
|
||||
tableStart = '['
|
||||
tableEnd = ']'
|
||||
arrayTableStart = '['
|
||||
arrayTableEnd = ']'
|
||||
tableSep = '.'
|
||||
keySep = '='
|
||||
arrayStart = '['
|
||||
arrayEnd = ']'
|
||||
commentStart = '#'
|
||||
stringStart = '"'
|
||||
stringEnd = '"'
|
||||
rawStringStart = '\''
|
||||
rawStringEnd = '\''
|
||||
inlineTableStart = '{'
|
||||
inlineTableEnd = '}'
|
||||
)
|
||||
|
||||
type stateFn func(lx *lexer) stateFn
|
||||
|
||||
type lexer struct {
|
||||
input string
|
||||
start int
|
||||
pos int
|
||||
line int
|
||||
state stateFn
|
||||
items chan item
|
||||
|
||||
// Allow for backing up up to three runes.
|
||||
// This is necessary because TOML contains 3-rune tokens (""" and ''').
|
||||
prevWidths [3]int
|
||||
nprev int // how many of prevWidths are in use
|
||||
// If we emit an eof, we can still back up, but it is not OK to call
|
||||
// next again.
|
||||
atEOF bool
|
||||
|
||||
// A stack of state functions used to maintain context.
|
||||
// The idea is to reuse parts of the state machine in various places.
|
||||
// For example, values can appear at the top level or within arbitrarily
|
||||
// nested arrays. The last state on the stack is used after a value has
|
||||
// been lexed. Similarly for comments.
|
||||
stack []stateFn
|
||||
}
|
||||
|
||||
type item struct {
|
||||
typ itemType
|
||||
val string
|
||||
line int
|
||||
}
|
||||
|
||||
func (lx *lexer) nextItem() item {
|
||||
for {
|
||||
select {
|
||||
case item := <-lx.items:
|
||||
return item
|
||||
default:
|
||||
lx.state = lx.state(lx)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func lex(input string) *lexer {
|
||||
lx := &lexer{
|
||||
input: input,
|
||||
state: lexTop,
|
||||
line: 1,
|
||||
items: make(chan item, 10),
|
||||
stack: make([]stateFn, 0, 10),
|
||||
}
|
||||
return lx
|
||||
}
|
||||
|
||||
func (lx *lexer) push(state stateFn) {
|
||||
lx.stack = append(lx.stack, state)
|
||||
}
|
||||
|
||||
func (lx *lexer) pop() stateFn {
|
||||
if len(lx.stack) == 0 {
|
||||
return lx.errorf("BUG in lexer: no states to pop")
|
||||
}
|
||||
last := lx.stack[len(lx.stack)-1]
|
||||
lx.stack = lx.stack[0 : len(lx.stack)-1]
|
||||
return last
|
||||
}
|
||||
|
||||
func (lx *lexer) current() string {
|
||||
return lx.input[lx.start:lx.pos]
|
||||
}
|
||||
|
||||
func (lx *lexer) emit(typ itemType) {
|
||||
lx.items <- item{typ, lx.current(), lx.line}
|
||||
lx.start = lx.pos
|
||||
}
|
||||
|
||||
func (lx *lexer) emitTrim(typ itemType) {
|
||||
lx.items <- item{typ, strings.TrimSpace(lx.current()), lx.line}
|
||||
lx.start = lx.pos
|
||||
}
|
||||
|
||||
func (lx *lexer) next() (r rune) {
|
||||
if lx.atEOF {
|
||||
panic("next called after EOF")
|
||||
}
|
||||
if lx.pos >= len(lx.input) {
|
||||
lx.atEOF = true
|
||||
return eof
|
||||
}
|
||||
|
||||
if lx.input[lx.pos] == '\n' {
|
||||
lx.line++
|
||||
}
|
||||
lx.prevWidths[2] = lx.prevWidths[1]
|
||||
lx.prevWidths[1] = lx.prevWidths[0]
|
||||
if lx.nprev < 3 {
|
||||
lx.nprev++
|
||||
}
|
||||
r, w := utf8.DecodeRuneInString(lx.input[lx.pos:])
|
||||
lx.prevWidths[0] = w
|
||||
lx.pos += w
|
||||
return r
|
||||
}
|
||||
|
||||
// ignore skips over the pending input before this point.
|
||||
func (lx *lexer) ignore() {
|
||||
lx.start = lx.pos
|
||||
}
|
||||
|
||||
// backup steps back one rune. Can be called only twice between calls to next.
|
||||
func (lx *lexer) backup() {
|
||||
if lx.atEOF {
|
||||
lx.atEOF = false
|
||||
return
|
||||
}
|
||||
if lx.nprev < 1 {
|
||||
panic("backed up too far")
|
||||
}
|
||||
w := lx.prevWidths[0]
|
||||
lx.prevWidths[0] = lx.prevWidths[1]
|
||||
lx.prevWidths[1] = lx.prevWidths[2]
|
||||
lx.nprev--
|
||||
lx.pos -= w
|
||||
if lx.pos < len(lx.input) && lx.input[lx.pos] == '\n' {
|
||||
lx.line--
|
||||
}
|
||||
}
|
||||
|
||||
// accept consumes the next rune if it's equal to `valid`.
|
||||
func (lx *lexer) accept(valid rune) bool {
|
||||
if lx.next() == valid {
|
||||
return true
|
||||
}
|
||||
lx.backup()
|
||||
return false
|
||||
}
|
||||
|
||||
// peek returns but does not consume the next rune in the input.
|
||||
func (lx *lexer) peek() rune {
|
||||
r := lx.next()
|
||||
lx.backup()
|
||||
return r
|
||||
}
|
||||
|
||||
// skip ignores all input that matches the given predicate.
|
||||
func (lx *lexer) skip(pred func(rune) bool) {
|
||||
for {
|
||||
r := lx.next()
|
||||
if pred(r) {
|
||||
continue
|
||||
}
|
||||
lx.backup()
|
||||
lx.ignore()
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// errorf stops all lexing by emitting an error and returning `nil`.
|
||||
// Note that any value that is a character is escaped if it's a special
|
||||
// character (newlines, tabs, etc.).
|
||||
func (lx *lexer) errorf(format string, values ...interface{}) stateFn {
|
||||
lx.items <- item{
|
||||
itemError,
|
||||
fmt.Sprintf(format, values...),
|
||||
lx.line,
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// lexTop consumes elements at the top level of TOML data.
|
||||
func lexTop(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
if isWhitespace(r) || isNL(r) {
|
||||
return lexSkip(lx, lexTop)
|
||||
}
|
||||
switch r {
|
||||
case commentStart:
|
||||
lx.push(lexTop)
|
||||
return lexCommentStart
|
||||
case tableStart:
|
||||
return lexTableStart
|
||||
case eof:
|
||||
if lx.pos > lx.start {
|
||||
return lx.errorf("unexpected EOF")
|
||||
}
|
||||
lx.emit(itemEOF)
|
||||
return nil
|
||||
}
|
||||
|
||||
// At this point, the only valid item can be a key, so we back up
|
||||
// and let the key lexer do the rest.
|
||||
lx.backup()
|
||||
lx.push(lexTopEnd)
|
||||
return lexKeyStart
|
||||
}
|
||||
|
||||
// lexTopEnd is entered whenever a top-level item has been consumed. (A value
|
||||
// or a table.) It must see only whitespace, and will turn back to lexTop
|
||||
// upon a newline. If it sees EOF, it will quit the lexer successfully.
|
||||
func lexTopEnd(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch {
|
||||
case r == commentStart:
|
||||
// a comment will read to a newline for us.
|
||||
lx.push(lexTop)
|
||||
return lexCommentStart
|
||||
case isWhitespace(r):
|
||||
return lexTopEnd
|
||||
case isNL(r):
|
||||
lx.ignore()
|
||||
return lexTop
|
||||
case r == eof:
|
||||
lx.emit(itemEOF)
|
||||
return nil
|
||||
}
|
||||
return lx.errorf("expected a top-level item to end with a newline, "+
|
||||
"comment, or EOF, but got %q instead", r)
|
||||
}
|
||||
|
||||
// lexTable lexes the beginning of a table. Namely, it makes sure that
|
||||
// it starts with a character other than '.' and ']'.
|
||||
// It assumes that '[' has already been consumed.
|
||||
// It also handles the case that this is an item in an array of tables.
|
||||
// e.g., '[[name]]'.
|
||||
func lexTableStart(lx *lexer) stateFn {
|
||||
if lx.peek() == arrayTableStart {
|
||||
lx.next()
|
||||
lx.emit(itemArrayTableStart)
|
||||
lx.push(lexArrayTableEnd)
|
||||
} else {
|
||||
lx.emit(itemTableStart)
|
||||
lx.push(lexTableEnd)
|
||||
}
|
||||
return lexTableNameStart
|
||||
}
|
||||
|
||||
func lexTableEnd(lx *lexer) stateFn {
|
||||
lx.emit(itemTableEnd)
|
||||
return lexTopEnd
|
||||
}
|
||||
|
||||
func lexArrayTableEnd(lx *lexer) stateFn {
|
||||
if r := lx.next(); r != arrayTableEnd {
|
||||
return lx.errorf("expected end of table array name delimiter %q, "+
|
||||
"but got %q instead", arrayTableEnd, r)
|
||||
}
|
||||
lx.emit(itemArrayTableEnd)
|
||||
return lexTopEnd
|
||||
}
|
||||
|
||||
func lexTableNameStart(lx *lexer) stateFn {
|
||||
lx.skip(isWhitespace)
|
||||
switch r := lx.peek(); {
|
||||
case r == tableEnd || r == eof:
|
||||
return lx.errorf("unexpected end of table name " +
|
||||
"(table names cannot be empty)")
|
||||
case r == tableSep:
|
||||
return lx.errorf("unexpected table separator " +
|
||||
"(table names cannot be empty)")
|
||||
case r == stringStart || r == rawStringStart:
|
||||
lx.ignore()
|
||||
lx.push(lexTableNameEnd)
|
||||
return lexValue // reuse string lexing
|
||||
default:
|
||||
return lexBareTableName
|
||||
}
|
||||
}
|
||||
|
||||
// lexBareTableName lexes the name of a table. It assumes that at least one
|
||||
// valid character for the table has already been read.
|
||||
func lexBareTableName(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
if isBareKeyChar(r) {
|
||||
return lexBareTableName
|
||||
}
|
||||
lx.backup()
|
||||
lx.emit(itemText)
|
||||
return lexTableNameEnd
|
||||
}
|
||||
|
||||
// lexTableNameEnd reads the end of a piece of a table name, optionally
|
||||
// consuming whitespace.
|
||||
func lexTableNameEnd(lx *lexer) stateFn {
|
||||
lx.skip(isWhitespace)
|
||||
switch r := lx.next(); {
|
||||
case isWhitespace(r):
|
||||
return lexTableNameEnd
|
||||
case r == tableSep:
|
||||
lx.ignore()
|
||||
return lexTableNameStart
|
||||
case r == tableEnd:
|
||||
return lx.pop()
|
||||
default:
|
||||
return lx.errorf("expected '.' or ']' to end table name, "+
|
||||
"but got %q instead", r)
|
||||
}
|
||||
}
|
||||
|
||||
// lexKeyStart consumes a key name up until the first non-whitespace character.
|
||||
// lexKeyStart will ignore whitespace.
|
||||
func lexKeyStart(lx *lexer) stateFn {
|
||||
r := lx.peek()
|
||||
switch {
|
||||
case r == keySep:
|
||||
return lx.errorf("unexpected key separator %q", keySep)
|
||||
case isWhitespace(r) || isNL(r):
|
||||
lx.next()
|
||||
return lexSkip(lx, lexKeyStart)
|
||||
case r == stringStart || r == rawStringStart:
|
||||
lx.ignore()
|
||||
lx.emit(itemKeyStart)
|
||||
lx.push(lexKeyEnd)
|
||||
return lexValue // reuse string lexing
|
||||
default:
|
||||
lx.ignore()
|
||||
lx.emit(itemKeyStart)
|
||||
return lexBareKey
|
||||
}
|
||||
}
|
||||
|
||||
// lexBareKey consumes the text of a bare key. Assumes that the first character
|
||||
// (which is not whitespace) has not yet been consumed.
|
||||
func lexBareKey(lx *lexer) stateFn {
|
||||
switch r := lx.next(); {
|
||||
case isBareKeyChar(r):
|
||||
return lexBareKey
|
||||
case isWhitespace(r):
|
||||
lx.backup()
|
||||
lx.emit(itemText)
|
||||
return lexKeyEnd
|
||||
case r == keySep:
|
||||
lx.backup()
|
||||
lx.emit(itemText)
|
||||
return lexKeyEnd
|
||||
default:
|
||||
return lx.errorf("bare keys cannot contain %q", r)
|
||||
}
|
||||
}
|
||||
|
||||
// lexKeyEnd consumes the end of a key and trims whitespace (up to the key
|
||||
// separator).
|
||||
func lexKeyEnd(lx *lexer) stateFn {
|
||||
switch r := lx.next(); {
|
||||
case r == keySep:
|
||||
return lexSkip(lx, lexValue)
|
||||
case isWhitespace(r):
|
||||
return lexSkip(lx, lexKeyEnd)
|
||||
default:
|
||||
return lx.errorf("expected key separator %q, but got %q instead",
|
||||
keySep, r)
|
||||
}
|
||||
}
|
||||
|
||||
// lexValue starts the consumption of a value anywhere a value is expected.
|
||||
// lexValue will ignore whitespace.
|
||||
// After a value is lexed, the last state on the next is popped and returned.
|
||||
func lexValue(lx *lexer) stateFn {
|
||||
// We allow whitespace to precede a value, but NOT newlines.
|
||||
// In array syntax, the array states are responsible for ignoring newlines.
|
||||
r := lx.next()
|
||||
switch {
|
||||
case isWhitespace(r):
|
||||
return lexSkip(lx, lexValue)
|
||||
case isDigit(r):
|
||||
lx.backup() // avoid an extra state and use the same as above
|
||||
return lexNumberOrDateStart
|
||||
}
|
||||
switch r {
|
||||
case arrayStart:
|
||||
lx.ignore()
|
||||
lx.emit(itemArray)
|
||||
return lexArrayValue
|
||||
case inlineTableStart:
|
||||
lx.ignore()
|
||||
lx.emit(itemInlineTableStart)
|
||||
return lexInlineTableValue
|
||||
case stringStart:
|
||||
if lx.accept(stringStart) {
|
||||
if lx.accept(stringStart) {
|
||||
lx.ignore() // Ignore """
|
||||
return lexMultilineString
|
||||
}
|
||||
lx.backup()
|
||||
}
|
||||
lx.ignore() // ignore the '"'
|
||||
return lexString
|
||||
case rawStringStart:
|
||||
if lx.accept(rawStringStart) {
|
||||
if lx.accept(rawStringStart) {
|
||||
lx.ignore() // Ignore """
|
||||
return lexMultilineRawString
|
||||
}
|
||||
lx.backup()
|
||||
}
|
||||
lx.ignore() // ignore the "'"
|
||||
return lexRawString
|
||||
case '+', '-':
|
||||
return lexNumberStart
|
||||
case '.': // special error case, be kind to users
|
||||
return lx.errorf("floats must start with a digit, not '.'")
|
||||
}
|
||||
if unicode.IsLetter(r) {
|
||||
// Be permissive here; lexBool will give a nice error if the
|
||||
// user wrote something like
|
||||
// x = foo
|
||||
// (i.e. not 'true' or 'false' but is something else word-like.)
|
||||
lx.backup()
|
||||
return lexBool
|
||||
}
|
||||
return lx.errorf("expected value but found %q instead", r)
|
||||
}
|
||||
|
||||
// lexArrayValue consumes one value in an array. It assumes that '[' or ','
|
||||
// have already been consumed. All whitespace and newlines are ignored.
|
||||
func lexArrayValue(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch {
|
||||
case isWhitespace(r) || isNL(r):
|
||||
return lexSkip(lx, lexArrayValue)
|
||||
case r == commentStart:
|
||||
lx.push(lexArrayValue)
|
||||
return lexCommentStart
|
||||
case r == comma:
|
||||
return lx.errorf("unexpected comma")
|
||||
case r == arrayEnd:
|
||||
// NOTE(caleb): The spec isn't clear about whether you can have
|
||||
// a trailing comma or not, so we'll allow it.
|
||||
return lexArrayEnd
|
||||
}
|
||||
|
||||
lx.backup()
|
||||
lx.push(lexArrayValueEnd)
|
||||
return lexValue
|
||||
}
|
||||
|
||||
// lexArrayValueEnd consumes everything between the end of an array value and
|
||||
// the next value (or the end of the array): it ignores whitespace and newlines
|
||||
// and expects either a ',' or a ']'.
|
||||
func lexArrayValueEnd(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch {
|
||||
case isWhitespace(r) || isNL(r):
|
||||
return lexSkip(lx, lexArrayValueEnd)
|
||||
case r == commentStart:
|
||||
lx.push(lexArrayValueEnd)
|
||||
return lexCommentStart
|
||||
case r == comma:
|
||||
lx.ignore()
|
||||
return lexArrayValue // move on to the next value
|
||||
case r == arrayEnd:
|
||||
return lexArrayEnd
|
||||
}
|
||||
return lx.errorf(
|
||||
"expected a comma or array terminator %q, but got %q instead",
|
||||
arrayEnd, r,
|
||||
)
|
||||
}
|
||||
|
||||
// lexArrayEnd finishes the lexing of an array.
|
||||
// It assumes that a ']' has just been consumed.
|
||||
func lexArrayEnd(lx *lexer) stateFn {
|
||||
lx.ignore()
|
||||
lx.emit(itemArrayEnd)
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
// lexInlineTableValue consumes one key/value pair in an inline table.
|
||||
// It assumes that '{' or ',' have already been consumed. Whitespace is ignored.
|
||||
func lexInlineTableValue(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch {
|
||||
case isWhitespace(r):
|
||||
return lexSkip(lx, lexInlineTableValue)
|
||||
case isNL(r):
|
||||
return lx.errorf("newlines not allowed within inline tables")
|
||||
case r == commentStart:
|
||||
lx.push(lexInlineTableValue)
|
||||
return lexCommentStart
|
||||
case r == comma:
|
||||
return lx.errorf("unexpected comma")
|
||||
case r == inlineTableEnd:
|
||||
return lexInlineTableEnd
|
||||
}
|
||||
lx.backup()
|
||||
lx.push(lexInlineTableValueEnd)
|
||||
return lexKeyStart
|
||||
}
|
||||
|
||||
// lexInlineTableValueEnd consumes everything between the end of an inline table
|
||||
// key/value pair and the next pair (or the end of the table):
|
||||
// it ignores whitespace and expects either a ',' or a '}'.
|
||||
func lexInlineTableValueEnd(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch {
|
||||
case isWhitespace(r):
|
||||
return lexSkip(lx, lexInlineTableValueEnd)
|
||||
case isNL(r):
|
||||
return lx.errorf("newlines not allowed within inline tables")
|
||||
case r == commentStart:
|
||||
lx.push(lexInlineTableValueEnd)
|
||||
return lexCommentStart
|
||||
case r == comma:
|
||||
lx.ignore()
|
||||
return lexInlineTableValue
|
||||
case r == inlineTableEnd:
|
||||
return lexInlineTableEnd
|
||||
}
|
||||
return lx.errorf("expected a comma or an inline table terminator %q, "+
|
||||
"but got %q instead", inlineTableEnd, r)
|
||||
}
|
||||
|
||||
// lexInlineTableEnd finishes the lexing of an inline table.
|
||||
// It assumes that a '}' has just been consumed.
|
||||
func lexInlineTableEnd(lx *lexer) stateFn {
|
||||
lx.ignore()
|
||||
lx.emit(itemInlineTableEnd)
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
// lexString consumes the inner contents of a string. It assumes that the
|
||||
// beginning '"' has already been consumed and ignored.
|
||||
func lexString(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch {
|
||||
case r == eof:
|
||||
return lx.errorf("unexpected EOF")
|
||||
case isNL(r):
|
||||
return lx.errorf("strings cannot contain newlines")
|
||||
case r == '\\':
|
||||
lx.push(lexString)
|
||||
return lexStringEscape
|
||||
case r == stringEnd:
|
||||
lx.backup()
|
||||
lx.emit(itemString)
|
||||
lx.next()
|
||||
lx.ignore()
|
||||
return lx.pop()
|
||||
}
|
||||
return lexString
|
||||
}
|
||||
|
||||
// lexMultilineString consumes the inner contents of a string. It assumes that
|
||||
// the beginning '"""' has already been consumed and ignored.
|
||||
func lexMultilineString(lx *lexer) stateFn {
|
||||
switch lx.next() {
|
||||
case eof:
|
||||
return lx.errorf("unexpected EOF")
|
||||
case '\\':
|
||||
return lexMultilineStringEscape
|
||||
case stringEnd:
|
||||
if lx.accept(stringEnd) {
|
||||
if lx.accept(stringEnd) {
|
||||
lx.backup()
|
||||
lx.backup()
|
||||
lx.backup()
|
||||
lx.emit(itemMultilineString)
|
||||
lx.next()
|
||||
lx.next()
|
||||
lx.next()
|
||||
lx.ignore()
|
||||
return lx.pop()
|
||||
}
|
||||
lx.backup()
|
||||
}
|
||||
}
|
||||
return lexMultilineString
|
||||
}
|
||||
|
||||
// lexRawString consumes a raw string. Nothing can be escaped in such a string.
|
||||
// It assumes that the beginning "'" has already been consumed and ignored.
|
||||
func lexRawString(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch {
|
||||
case r == eof:
|
||||
return lx.errorf("unexpected EOF")
|
||||
case isNL(r):
|
||||
return lx.errorf("strings cannot contain newlines")
|
||||
case r == rawStringEnd:
|
||||
lx.backup()
|
||||
lx.emit(itemRawString)
|
||||
lx.next()
|
||||
lx.ignore()
|
||||
return lx.pop()
|
||||
}
|
||||
return lexRawString
|
||||
}
|
||||
|
||||
// lexMultilineRawString consumes a raw string. Nothing can be escaped in such
|
||||
// a string. It assumes that the beginning "'''" has already been consumed and
|
||||
// ignored.
|
||||
func lexMultilineRawString(lx *lexer) stateFn {
|
||||
switch lx.next() {
|
||||
case eof:
|
||||
return lx.errorf("unexpected EOF")
|
||||
case rawStringEnd:
|
||||
if lx.accept(rawStringEnd) {
|
||||
if lx.accept(rawStringEnd) {
|
||||
lx.backup()
|
||||
lx.backup()
|
||||
lx.backup()
|
||||
lx.emit(itemRawMultilineString)
|
||||
lx.next()
|
||||
lx.next()
|
||||
lx.next()
|
||||
lx.ignore()
|
||||
return lx.pop()
|
||||
}
|
||||
lx.backup()
|
||||
}
|
||||
}
|
||||
return lexMultilineRawString
|
||||
}
|
||||
|
||||
// lexMultilineStringEscape consumes an escaped character. It assumes that the
|
||||
// preceding '\\' has already been consumed.
|
||||
func lexMultilineStringEscape(lx *lexer) stateFn {
|
||||
// Handle the special case first:
|
||||
if isNL(lx.next()) {
|
||||
return lexMultilineString
|
||||
}
|
||||
lx.backup()
|
||||
lx.push(lexMultilineString)
|
||||
return lexStringEscape(lx)
|
||||
}
|
||||
|
||||
func lexStringEscape(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
switch r {
|
||||
case 'b':
|
||||
fallthrough
|
||||
case 't':
|
||||
fallthrough
|
||||
case 'n':
|
||||
fallthrough
|
||||
case 'f':
|
||||
fallthrough
|
||||
case 'r':
|
||||
fallthrough
|
||||
case '"':
|
||||
fallthrough
|
||||
case '\\':
|
||||
return lx.pop()
|
||||
case 'u':
|
||||
return lexShortUnicodeEscape
|
||||
case 'U':
|
||||
return lexLongUnicodeEscape
|
||||
}
|
||||
return lx.errorf("invalid escape character %q; only the following "+
|
||||
"escape characters are allowed: "+
|
||||
`\b, \t, \n, \f, \r, \", \\, \uXXXX, and \UXXXXXXXX`, r)
|
||||
}
|
||||
|
||||
func lexShortUnicodeEscape(lx *lexer) stateFn {
|
||||
var r rune
|
||||
for i := 0; i < 4; i++ {
|
||||
r = lx.next()
|
||||
if !isHexadecimal(r) {
|
||||
return lx.errorf(`expected four hexadecimal digits after '\u', `+
|
||||
"but got %q instead", lx.current())
|
||||
}
|
||||
}
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
func lexLongUnicodeEscape(lx *lexer) stateFn {
|
||||
var r rune
|
||||
for i := 0; i < 8; i++ {
|
||||
r = lx.next()
|
||||
if !isHexadecimal(r) {
|
||||
return lx.errorf(`expected eight hexadecimal digits after '\U', `+
|
||||
"but got %q instead", lx.current())
|
||||
}
|
||||
}
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
// lexNumberOrDateStart consumes either an integer, a float, or datetime.
|
||||
func lexNumberOrDateStart(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
if isDigit(r) {
|
||||
return lexNumberOrDate
|
||||
}
|
||||
switch r {
|
||||
case '_':
|
||||
return lexNumber
|
||||
case 'e', 'E':
|
||||
return lexFloat
|
||||
case '.':
|
||||
return lx.errorf("floats must start with a digit, not '.'")
|
||||
}
|
||||
return lx.errorf("expected a digit but got %q", r)
|
||||
}
|
||||
|
||||
// lexNumberOrDate consumes either an integer, float or datetime.
|
||||
func lexNumberOrDate(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
if isDigit(r) {
|
||||
return lexNumberOrDate
|
||||
}
|
||||
switch r {
|
||||
case '-':
|
||||
return lexDatetime
|
||||
case '_':
|
||||
return lexNumber
|
||||
case '.', 'e', 'E':
|
||||
return lexFloat
|
||||
}
|
||||
|
||||
lx.backup()
|
||||
lx.emit(itemInteger)
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
// lexDatetime consumes a Datetime, to a first approximation.
|
||||
// The parser validates that it matches one of the accepted formats.
|
||||
func lexDatetime(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
if isDigit(r) {
|
||||
return lexDatetime
|
||||
}
|
||||
switch r {
|
||||
case '-', 'T', ':', '.', 'Z', '+':
|
||||
return lexDatetime
|
||||
}
|
||||
|
||||
lx.backup()
|
||||
lx.emit(itemDatetime)
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
// lexNumberStart consumes either an integer or a float. It assumes that a sign
|
||||
// has already been read, but that *no* digits have been consumed.
|
||||
// lexNumberStart will move to the appropriate integer or float states.
|
||||
func lexNumberStart(lx *lexer) stateFn {
|
||||
// We MUST see a digit. Even floats have to start with a digit.
|
||||
r := lx.next()
|
||||
if !isDigit(r) {
|
||||
if r == '.' {
|
||||
return lx.errorf("floats must start with a digit, not '.'")
|
||||
}
|
||||
return lx.errorf("expected a digit but got %q", r)
|
||||
}
|
||||
return lexNumber
|
||||
}
|
||||
|
||||
// lexNumber consumes an integer or a float after seeing the first digit.
|
||||
func lexNumber(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
if isDigit(r) {
|
||||
return lexNumber
|
||||
}
|
||||
switch r {
|
||||
case '_':
|
||||
return lexNumber
|
||||
case '.', 'e', 'E':
|
||||
return lexFloat
|
||||
}
|
||||
|
||||
lx.backup()
|
||||
lx.emit(itemInteger)
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
// lexFloat consumes the elements of a float. It allows any sequence of
|
||||
// float-like characters, so floats emitted by the lexer are only a first
|
||||
// approximation and must be validated by the parser.
|
||||
func lexFloat(lx *lexer) stateFn {
|
||||
r := lx.next()
|
||||
if isDigit(r) {
|
||||
return lexFloat
|
||||
}
|
||||
switch r {
|
||||
case '_', '.', '-', '+', 'e', 'E':
|
||||
return lexFloat
|
||||
}
|
||||
|
||||
lx.backup()
|
||||
lx.emit(itemFloat)
|
||||
return lx.pop()
|
||||
}
|
||||
|
||||
// lexBool consumes a bool string: 'true' or 'false.
|
||||
func lexBool(lx *lexer) stateFn {
|
||||
var rs []rune
|
||||
for {
|
||||
r := lx.next()
|
||||
if !unicode.IsLetter(r) {
|
||||
lx.backup()
|
||||
break
|
||||
}
|
||||
rs = append(rs, r)
|
||||
}
|
||||
s := string(rs)
|
||||
switch s {
|
||||
case "true", "false":
|
||||
lx.emit(itemBool)
|
||||
return lx.pop()
|
||||
}
|
||||
return lx.errorf("expected value but found %q instead", s)
|
||||
}
|
||||
|
||||
// lexCommentStart begins the lexing of a comment. It will emit
|
||||
// itemCommentStart and consume no characters, passing control to lexComment.
|
||||
func lexCommentStart(lx *lexer) stateFn {
|
||||
lx.ignore()
|
||||
lx.emit(itemCommentStart)
|
||||
return lexComment
|
||||
}
|
||||
|
||||
// lexComment lexes an entire comment. It assumes that '#' has been consumed.
|
||||
// It will consume *up to* the first newline character, and pass control
|
||||
// back to the last state on the stack.
|
||||
func lexComment(lx *lexer) stateFn {
|
||||
r := lx.peek()
|
||||
if isNL(r) || r == eof {
|
||||
lx.emit(itemText)
|
||||
return lx.pop()
|
||||
}
|
||||
lx.next()
|
||||
return lexComment
|
||||
}
|
||||
|
||||
// lexSkip ignores all slurped input and moves on to the next state.
|
||||
func lexSkip(lx *lexer, nextState stateFn) stateFn {
|
||||
return func(lx *lexer) stateFn {
|
||||
lx.ignore()
|
||||
return nextState
|
||||
}
|
||||
}
|
||||
|
||||
// isWhitespace returns true if `r` is a whitespace character according
|
||||
// to the spec.
|
||||
func isWhitespace(r rune) bool {
|
||||
return r == '\t' || r == ' '
|
||||
}
|
||||
|
||||
func isNL(r rune) bool {
|
||||
return r == '\n' || r == '\r'
|
||||
}
|
||||
|
||||
func isDigit(r rune) bool {
|
||||
return r >= '0' && r <= '9'
|
||||
}
|
||||
|
||||
func isHexadecimal(r rune) bool {
|
||||
return (r >= '0' && r <= '9') ||
|
||||
(r >= 'a' && r <= 'f') ||
|
||||
(r >= 'A' && r <= 'F')
|
||||
}
|
||||
|
||||
func isBareKeyChar(r rune) bool {
|
||||
return (r >= 'A' && r <= 'Z') ||
|
||||
(r >= 'a' && r <= 'z') ||
|
||||
(r >= '0' && r <= '9') ||
|
||||
r == '_' ||
|
||||
r == '-'
|
||||
}
|
||||
|
||||
func (itype itemType) String() string {
|
||||
switch itype {
|
||||
case itemError:
|
||||
return "Error"
|
||||
case itemNIL:
|
||||
return "NIL"
|
||||
case itemEOF:
|
||||
return "EOF"
|
||||
case itemText:
|
||||
return "Text"
|
||||
case itemString, itemRawString, itemMultilineString, itemRawMultilineString:
|
||||
return "String"
|
||||
case itemBool:
|
||||
return "Bool"
|
||||
case itemInteger:
|
||||
return "Integer"
|
||||
case itemFloat:
|
||||
return "Float"
|
||||
case itemDatetime:
|
||||
return "DateTime"
|
||||
case itemTableStart:
|
||||
return "TableStart"
|
||||
case itemTableEnd:
|
||||
return "TableEnd"
|
||||
case itemKeyStart:
|
||||
return "KeyStart"
|
||||
case itemArray:
|
||||
return "Array"
|
||||
case itemArrayEnd:
|
||||
return "ArrayEnd"
|
||||
case itemCommentStart:
|
||||
return "CommentStart"
|
||||
}
|
||||
panic(fmt.Sprintf("BUG: Unknown type '%d'.", int(itype)))
|
||||
}
|
||||
|
||||
func (item item) String() string {
|
||||
return fmt.Sprintf("(%s, %s)", item.typ.String(), item.val)
|
||||
}
|
||||
|
|
@ -0,0 +1,592 @@
|
|||
package toml
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"strconv"
|
||||
"strings"
|
||||
"time"
|
||||
"unicode"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
type parser struct {
|
||||
mapping map[string]interface{}
|
||||
types map[string]tomlType
|
||||
lx *lexer
|
||||
|
||||
// A list of keys in the order that they appear in the TOML data.
|
||||
ordered []Key
|
||||
|
||||
// the full key for the current hash in scope
|
||||
context Key
|
||||
|
||||
// the base key name for everything except hashes
|
||||
currentKey string
|
||||
|
||||
// rough approximation of line number
|
||||
approxLine int
|
||||
|
||||
// A map of 'key.group.names' to whether they were created implicitly.
|
||||
implicits map[string]bool
|
||||
}
|
||||
|
||||
type parseError string
|
||||
|
||||
func (pe parseError) Error() string {
|
||||
return string(pe)
|
||||
}
|
||||
|
||||
func parse(data string) (p *parser, err error) {
|
||||
defer func() {
|
||||
if r := recover(); r != nil {
|
||||
var ok bool
|
||||
if err, ok = r.(parseError); ok {
|
||||
return
|
||||
}
|
||||
panic(r)
|
||||
}
|
||||
}()
|
||||
|
||||
p = &parser{
|
||||
mapping: make(map[string]interface{}),
|
||||
types: make(map[string]tomlType),
|
||||
lx: lex(data),
|
||||
ordered: make([]Key, 0),
|
||||
implicits: make(map[string]bool),
|
||||
}
|
||||
for {
|
||||
item := p.next()
|
||||
if item.typ == itemEOF {
|
||||
break
|
||||
}
|
||||
p.topLevel(item)
|
||||
}
|
||||
|
||||
return p, nil
|
||||
}
|
||||
|
||||
func (p *parser) panicf(format string, v ...interface{}) {
|
||||
msg := fmt.Sprintf("Near line %d (last key parsed '%s'): %s",
|
||||
p.approxLine, p.current(), fmt.Sprintf(format, v...))
|
||||
panic(parseError(msg))
|
||||
}
|
||||
|
||||
func (p *parser) next() item {
|
||||
it := p.lx.nextItem()
|
||||
if it.typ == itemError {
|
||||
p.panicf("%s", it.val)
|
||||
}
|
||||
return it
|
||||
}
|
||||
|
||||
func (p *parser) bug(format string, v ...interface{}) {
|
||||
panic(fmt.Sprintf("BUG: "+format+"\n\n", v...))
|
||||
}
|
||||
|
||||
func (p *parser) expect(typ itemType) item {
|
||||
it := p.next()
|
||||
p.assertEqual(typ, it.typ)
|
||||
return it
|
||||
}
|
||||
|
||||
func (p *parser) assertEqual(expected, got itemType) {
|
||||
if expected != got {
|
||||
p.bug("Expected '%s' but got '%s'.", expected, got)
|
||||
}
|
||||
}
|
||||
|
||||
func (p *parser) topLevel(item item) {
|
||||
switch item.typ {
|
||||
case itemCommentStart:
|
||||
p.approxLine = item.line
|
||||
p.expect(itemText)
|
||||
case itemTableStart:
|
||||
kg := p.next()
|
||||
p.approxLine = kg.line
|
||||
|
||||
var key Key
|
||||
for ; kg.typ != itemTableEnd && kg.typ != itemEOF; kg = p.next() {
|
||||
key = append(key, p.keyString(kg))
|
||||
}
|
||||
p.assertEqual(itemTableEnd, kg.typ)
|
||||
|
||||
p.establishContext(key, false)
|
||||
p.setType("", tomlHash)
|
||||
p.ordered = append(p.ordered, key)
|
||||
case itemArrayTableStart:
|
||||
kg := p.next()
|
||||
p.approxLine = kg.line
|
||||
|
||||
var key Key
|
||||
for ; kg.typ != itemArrayTableEnd && kg.typ != itemEOF; kg = p.next() {
|
||||
key = append(key, p.keyString(kg))
|
||||
}
|
||||
p.assertEqual(itemArrayTableEnd, kg.typ)
|
||||
|
||||
p.establishContext(key, true)
|
||||
p.setType("", tomlArrayHash)
|
||||
p.ordered = append(p.ordered, key)
|
||||
case itemKeyStart:
|
||||
kname := p.next()
|
||||
p.approxLine = kname.line
|
||||
p.currentKey = p.keyString(kname)
|
||||
|
||||
val, typ := p.value(p.next())
|
||||
p.setValue(p.currentKey, val)
|
||||
p.setType(p.currentKey, typ)
|
||||
p.ordered = append(p.ordered, p.context.add(p.currentKey))
|
||||
p.currentKey = ""
|
||||
default:
|
||||
p.bug("Unexpected type at top level: %s", item.typ)
|
||||
}
|
||||
}
|
||||
|
||||
// Gets a string for a key (or part of a key in a table name).
|
||||
func (p *parser) keyString(it item) string {
|
||||
switch it.typ {
|
||||
case itemText:
|
||||
return it.val
|
||||
case itemString, itemMultilineString,
|
||||
itemRawString, itemRawMultilineString:
|
||||
s, _ := p.value(it)
|
||||
return s.(string)
|
||||
default:
|
||||
p.bug("Unexpected key type: %s", it.typ)
|
||||
panic("unreachable")
|
||||
}
|
||||
}
|
||||
|
||||
// value translates an expected value from the lexer into a Go value wrapped
|
||||
// as an empty interface.
|
||||
func (p *parser) value(it item) (interface{}, tomlType) {
|
||||
switch it.typ {
|
||||
case itemString:
|
||||
return p.replaceEscapes(it.val), p.typeOfPrimitive(it)
|
||||
case itemMultilineString:
|
||||
trimmed := stripFirstNewline(stripEscapedWhitespace(it.val))
|
||||
return p.replaceEscapes(trimmed), p.typeOfPrimitive(it)
|
||||
case itemRawString:
|
||||
return it.val, p.typeOfPrimitive(it)
|
||||
case itemRawMultilineString:
|
||||
return stripFirstNewline(it.val), p.typeOfPrimitive(it)
|
||||
case itemBool:
|
||||
switch it.val {
|
||||
case "true":
|
||||
return true, p.typeOfPrimitive(it)
|
||||
case "false":
|
||||
return false, p.typeOfPrimitive(it)
|
||||
}
|
||||
p.bug("Expected boolean value, but got '%s'.", it.val)
|
||||
case itemInteger:
|
||||
if !numUnderscoresOK(it.val) {
|
||||
p.panicf("Invalid integer %q: underscores must be surrounded by digits",
|
||||
it.val)
|
||||
}
|
||||
val := strings.Replace(it.val, "_", "", -1)
|
||||
num, err := strconv.ParseInt(val, 10, 64)
|
||||
if err != nil {
|
||||
// Distinguish integer values. Normally, it'd be a bug if the lexer
|
||||
// provides an invalid integer, but it's possible that the number is
|
||||
// out of range of valid values (which the lexer cannot determine).
|
||||
// So mark the former as a bug but the latter as a legitimate user
|
||||
// error.
|
||||
if e, ok := err.(*strconv.NumError); ok &&
|
||||
e.Err == strconv.ErrRange {
|
||||
|
||||
p.panicf("Integer '%s' is out of the range of 64-bit "+
|
||||
"signed integers.", it.val)
|
||||
} else {
|
||||
p.bug("Expected integer value, but got '%s'.", it.val)
|
||||
}
|
||||
}
|
||||
return num, p.typeOfPrimitive(it)
|
||||
case itemFloat:
|
||||
parts := strings.FieldsFunc(it.val, func(r rune) bool {
|
||||
switch r {
|
||||
case '.', 'e', 'E':
|
||||
return true
|
||||
}
|
||||
return false
|
||||
})
|
||||
for _, part := range parts {
|
||||
if !numUnderscoresOK(part) {
|
||||
p.panicf("Invalid float %q: underscores must be "+
|
||||
"surrounded by digits", it.val)
|
||||
}
|
||||
}
|
||||
if !numPeriodsOK(it.val) {
|
||||
// As a special case, numbers like '123.' or '1.e2',
|
||||
// which are valid as far as Go/strconv are concerned,
|
||||
// must be rejected because TOML says that a fractional
|
||||
// part consists of '.' followed by 1+ digits.
|
||||
p.panicf("Invalid float %q: '.' must be followed "+
|
||||
"by one or more digits", it.val)
|
||||
}
|
||||
val := strings.Replace(it.val, "_", "", -1)
|
||||
num, err := strconv.ParseFloat(val, 64)
|
||||
if err != nil {
|
||||
if e, ok := err.(*strconv.NumError); ok &&
|
||||
e.Err == strconv.ErrRange {
|
||||
|
||||
p.panicf("Float '%s' is out of the range of 64-bit "+
|
||||
"IEEE-754 floating-point numbers.", it.val)
|
||||
} else {
|
||||
p.panicf("Invalid float value: %q", it.val)
|
||||
}
|
||||
}
|
||||
return num, p.typeOfPrimitive(it)
|
||||
case itemDatetime:
|
||||
var t time.Time
|
||||
var ok bool
|
||||
var err error
|
||||
for _, format := range []string{
|
||||
"2006-01-02T15:04:05Z07:00",
|
||||
"2006-01-02T15:04:05",
|
||||
"2006-01-02",
|
||||
} {
|
||||
t, err = time.ParseInLocation(format, it.val, time.Local)
|
||||
if err == nil {
|
||||
ok = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !ok {
|
||||
p.panicf("Invalid TOML Datetime: %q.", it.val)
|
||||
}
|
||||
return t, p.typeOfPrimitive(it)
|
||||
case itemArray:
|
||||
array := make([]interface{}, 0)
|
||||
types := make([]tomlType, 0)
|
||||
|
||||
for it = p.next(); it.typ != itemArrayEnd; it = p.next() {
|
||||
if it.typ == itemCommentStart {
|
||||
p.expect(itemText)
|
||||
continue
|
||||
}
|
||||
|
||||
val, typ := p.value(it)
|
||||
array = append(array, val)
|
||||
types = append(types, typ)
|
||||
}
|
||||
return array, p.typeOfArray(types)
|
||||
case itemInlineTableStart:
|
||||
var (
|
||||
hash = make(map[string]interface{})
|
||||
outerContext = p.context
|
||||
outerKey = p.currentKey
|
||||
)
|
||||
|
||||
p.context = append(p.context, p.currentKey)
|
||||
p.currentKey = ""
|
||||
for it := p.next(); it.typ != itemInlineTableEnd; it = p.next() {
|
||||
if it.typ != itemKeyStart {
|
||||
p.bug("Expected key start but instead found %q, around line %d",
|
||||
it.val, p.approxLine)
|
||||
}
|
||||
if it.typ == itemCommentStart {
|
||||
p.expect(itemText)
|
||||
continue
|
||||
}
|
||||
|
||||
// retrieve key
|
||||
k := p.next()
|
||||
p.approxLine = k.line
|
||||
kname := p.keyString(k)
|
||||
|
||||
// retrieve value
|
||||
p.currentKey = kname
|
||||
val, typ := p.value(p.next())
|
||||
// make sure we keep metadata up to date
|
||||
p.setType(kname, typ)
|
||||
p.ordered = append(p.ordered, p.context.add(p.currentKey))
|
||||
hash[kname] = val
|
||||
}
|
||||
p.context = outerContext
|
||||
p.currentKey = outerKey
|
||||
return hash, tomlHash
|
||||
}
|
||||
p.bug("Unexpected value type: %s", it.typ)
|
||||
panic("unreachable")
|
||||
}
|
||||
|
||||
// numUnderscoresOK checks whether each underscore in s is surrounded by
|
||||
// characters that are not underscores.
|
||||
func numUnderscoresOK(s string) bool {
|
||||
accept := false
|
||||
for _, r := range s {
|
||||
if r == '_' {
|
||||
if !accept {
|
||||
return false
|
||||
}
|
||||
accept = false
|
||||
continue
|
||||
}
|
||||
accept = true
|
||||
}
|
||||
return accept
|
||||
}
|
||||
|
||||
// numPeriodsOK checks whether every period in s is followed by a digit.
|
||||
func numPeriodsOK(s string) bool {
|
||||
period := false
|
||||
for _, r := range s {
|
||||
if period && !isDigit(r) {
|
||||
return false
|
||||
}
|
||||
period = r == '.'
|
||||
}
|
||||
return !period
|
||||
}
|
||||
|
||||
// establishContext sets the current context of the parser,
|
||||
// where the context is either a hash or an array of hashes. Which one is
|
||||
// set depends on the value of the `array` parameter.
|
||||
//
|
||||
// Establishing the context also makes sure that the key isn't a duplicate, and
|
||||
// will create implicit hashes automatically.
|
||||
func (p *parser) establishContext(key Key, array bool) {
|
||||
var ok bool
|
||||
|
||||
// Always start at the top level and drill down for our context.
|
||||
hashContext := p.mapping
|
||||
keyContext := make(Key, 0)
|
||||
|
||||
// We only need implicit hashes for key[0:-1]
|
||||
for _, k := range key[0 : len(key)-1] {
|
||||
_, ok = hashContext[k]
|
||||
keyContext = append(keyContext, k)
|
||||
|
||||
// No key? Make an implicit hash and move on.
|
||||
if !ok {
|
||||
p.addImplicit(keyContext)
|
||||
hashContext[k] = make(map[string]interface{})
|
||||
}
|
||||
|
||||
// If the hash context is actually an array of tables, then set
|
||||
// the hash context to the last element in that array.
|
||||
//
|
||||
// Otherwise, it better be a table, since this MUST be a key group (by
|
||||
// virtue of it not being the last element in a key).
|
||||
switch t := hashContext[k].(type) {
|
||||
case []map[string]interface{}:
|
||||
hashContext = t[len(t)-1]
|
||||
case map[string]interface{}:
|
||||
hashContext = t
|
||||
default:
|
||||
p.panicf("Key '%s' was already created as a hash.", keyContext)
|
||||
}
|
||||
}
|
||||
|
||||
p.context = keyContext
|
||||
if array {
|
||||
// If this is the first element for this array, then allocate a new
|
||||
// list of tables for it.
|
||||
k := key[len(key)-1]
|
||||
if _, ok := hashContext[k]; !ok {
|
||||
hashContext[k] = make([]map[string]interface{}, 0, 5)
|
||||
}
|
||||
|
||||
// Add a new table. But make sure the key hasn't already been used
|
||||
// for something else.
|
||||
if hash, ok := hashContext[k].([]map[string]interface{}); ok {
|
||||
hashContext[k] = append(hash, make(map[string]interface{}))
|
||||
} else {
|
||||
p.panicf("Key '%s' was already created and cannot be used as "+
|
||||
"an array.", keyContext)
|
||||
}
|
||||
} else {
|
||||
p.setValue(key[len(key)-1], make(map[string]interface{}))
|
||||
}
|
||||
p.context = append(p.context, key[len(key)-1])
|
||||
}
|
||||
|
||||
// setValue sets the given key to the given value in the current context.
|
||||
// It will make sure that the key hasn't already been defined, account for
|
||||
// implicit key groups.
|
||||
func (p *parser) setValue(key string, value interface{}) {
|
||||
var tmpHash interface{}
|
||||
var ok bool
|
||||
|
||||
hash := p.mapping
|
||||
keyContext := make(Key, 0)
|
||||
for _, k := range p.context {
|
||||
keyContext = append(keyContext, k)
|
||||
if tmpHash, ok = hash[k]; !ok {
|
||||
p.bug("Context for key '%s' has not been established.", keyContext)
|
||||
}
|
||||
switch t := tmpHash.(type) {
|
||||
case []map[string]interface{}:
|
||||
// The context is a table of hashes. Pick the most recent table
|
||||
// defined as the current hash.
|
||||
hash = t[len(t)-1]
|
||||
case map[string]interface{}:
|
||||
hash = t
|
||||
default:
|
||||
p.bug("Expected hash to have type 'map[string]interface{}', but "+
|
||||
"it has '%T' instead.", tmpHash)
|
||||
}
|
||||
}
|
||||
keyContext = append(keyContext, key)
|
||||
|
||||
if _, ok := hash[key]; ok {
|
||||
// Typically, if the given key has already been set, then we have
|
||||
// to raise an error since duplicate keys are disallowed. However,
|
||||
// it's possible that a key was previously defined implicitly. In this
|
||||
// case, it is allowed to be redefined concretely. (See the
|
||||
// `tests/valid/implicit-and-explicit-after.toml` test in `toml-test`.)
|
||||
//
|
||||
// But we have to make sure to stop marking it as an implicit. (So that
|
||||
// another redefinition provokes an error.)
|
||||
//
|
||||
// Note that since it has already been defined (as a hash), we don't
|
||||
// want to overwrite it. So our business is done.
|
||||
if p.isImplicit(keyContext) {
|
||||
p.removeImplicit(keyContext)
|
||||
return
|
||||
}
|
||||
|
||||
// Otherwise, we have a concrete key trying to override a previous
|
||||
// key, which is *always* wrong.
|
||||
p.panicf("Key '%s' has already been defined.", keyContext)
|
||||
}
|
||||
hash[key] = value
|
||||
}
|
||||
|
||||
// setType sets the type of a particular value at a given key.
|
||||
// It should be called immediately AFTER setValue.
|
||||
//
|
||||
// Note that if `key` is empty, then the type given will be applied to the
|
||||
// current context (which is either a table or an array of tables).
|
||||
func (p *parser) setType(key string, typ tomlType) {
|
||||
keyContext := make(Key, 0, len(p.context)+1)
|
||||
for _, k := range p.context {
|
||||
keyContext = append(keyContext, k)
|
||||
}
|
||||
if len(key) > 0 { // allow type setting for hashes
|
||||
keyContext = append(keyContext, key)
|
||||
}
|
||||
p.types[keyContext.String()] = typ
|
||||
}
|
||||
|
||||
// addImplicit sets the given Key as having been created implicitly.
|
||||
func (p *parser) addImplicit(key Key) {
|
||||
p.implicits[key.String()] = true
|
||||
}
|
||||
|
||||
// removeImplicit stops tagging the given key as having been implicitly
|
||||
// created.
|
||||
func (p *parser) removeImplicit(key Key) {
|
||||
p.implicits[key.String()] = false
|
||||
}
|
||||
|
||||
// isImplicit returns true if the key group pointed to by the key was created
|
||||
// implicitly.
|
||||
func (p *parser) isImplicit(key Key) bool {
|
||||
return p.implicits[key.String()]
|
||||
}
|
||||
|
||||
// current returns the full key name of the current context.
|
||||
func (p *parser) current() string {
|
||||
if len(p.currentKey) == 0 {
|
||||
return p.context.String()
|
||||
}
|
||||
if len(p.context) == 0 {
|
||||
return p.currentKey
|
||||
}
|
||||
return fmt.Sprintf("%s.%s", p.context, p.currentKey)
|
||||
}
|
||||
|
||||
func stripFirstNewline(s string) string {
|
||||
if len(s) == 0 || s[0] != '\n' {
|
||||
return s
|
||||
}
|
||||
return s[1:]
|
||||
}
|
||||
|
||||
func stripEscapedWhitespace(s string) string {
|
||||
esc := strings.Split(s, "\\\n")
|
||||
if len(esc) > 1 {
|
||||
for i := 1; i < len(esc); i++ {
|
||||
esc[i] = strings.TrimLeftFunc(esc[i], unicode.IsSpace)
|
||||
}
|
||||
}
|
||||
return strings.Join(esc, "")
|
||||
}
|
||||
|
||||
func (p *parser) replaceEscapes(str string) string {
|
||||
var replaced []rune
|
||||
s := []byte(str)
|
||||
r := 0
|
||||
for r < len(s) {
|
||||
if s[r] != '\\' {
|
||||
c, size := utf8.DecodeRune(s[r:])
|
||||
r += size
|
||||
replaced = append(replaced, c)
|
||||
continue
|
||||
}
|
||||
r += 1
|
||||
if r >= len(s) {
|
||||
p.bug("Escape sequence at end of string.")
|
||||
return ""
|
||||
}
|
||||
switch s[r] {
|
||||
default:
|
||||
p.bug("Expected valid escape code after \\, but got %q.", s[r])
|
||||
return ""
|
||||
case 'b':
|
||||
replaced = append(replaced, rune(0x0008))
|
||||
r += 1
|
||||
case 't':
|
||||
replaced = append(replaced, rune(0x0009))
|
||||
r += 1
|
||||
case 'n':
|
||||
replaced = append(replaced, rune(0x000A))
|
||||
r += 1
|
||||
case 'f':
|
||||
replaced = append(replaced, rune(0x000C))
|
||||
r += 1
|
||||
case 'r':
|
||||
replaced = append(replaced, rune(0x000D))
|
||||
r += 1
|
||||
case '"':
|
||||
replaced = append(replaced, rune(0x0022))
|
||||
r += 1
|
||||
case '\\':
|
||||
replaced = append(replaced, rune(0x005C))
|
||||
r += 1
|
||||
case 'u':
|
||||
// At this point, we know we have a Unicode escape of the form
|
||||
// `uXXXX` at [r, r+5). (Because the lexer guarantees this
|
||||
// for us.)
|
||||
escaped := p.asciiEscapeToUnicode(s[r+1 : r+5])
|
||||
replaced = append(replaced, escaped)
|
||||
r += 5
|
||||
case 'U':
|
||||
// At this point, we know we have a Unicode escape of the form
|
||||
// `uXXXX` at [r, r+9). (Because the lexer guarantees this
|
||||
// for us.)
|
||||
escaped := p.asciiEscapeToUnicode(s[r+1 : r+9])
|
||||
replaced = append(replaced, escaped)
|
||||
r += 9
|
||||
}
|
||||
}
|
||||
return string(replaced)
|
||||
}
|
||||
|
||||
func (p *parser) asciiEscapeToUnicode(bs []byte) rune {
|
||||
s := string(bs)
|
||||
hex, err := strconv.ParseUint(strings.ToLower(s), 16, 32)
|
||||
if err != nil {
|
||||
p.bug("Could not parse '%s' as a hexadecimal number, but the "+
|
||||
"lexer claims it's OK: %s", s, err)
|
||||
}
|
||||
if !utf8.ValidRune(rune(hex)) {
|
||||
p.panicf("Escaped character '\\u%s' is not valid UTF-8.", s)
|
||||
}
|
||||
return rune(hex)
|
||||
}
|
||||
|
||||
func isStringType(ty itemType) bool {
|
||||
return ty == itemString || ty == itemMultilineString ||
|
||||
ty == itemRawString || ty == itemRawMultilineString
|
||||
}
|
||||
|
|
@ -0,0 +1 @@
|
|||
au BufWritePost *.go silent!make tags > /dev/null 2>&1
|
||||
|
|
@ -0,0 +1,91 @@
|
|||
package toml
|
||||
|
||||
// tomlType represents any Go type that corresponds to a TOML type.
|
||||
// While the first draft of the TOML spec has a simplistic type system that
|
||||
// probably doesn't need this level of sophistication, we seem to be militating
|
||||
// toward adding real composite types.
|
||||
type tomlType interface {
|
||||
typeString() string
|
||||
}
|
||||
|
||||
// typeEqual accepts any two types and returns true if they are equal.
|
||||
func typeEqual(t1, t2 tomlType) bool {
|
||||
if t1 == nil || t2 == nil {
|
||||
return false
|
||||
}
|
||||
return t1.typeString() == t2.typeString()
|
||||
}
|
||||
|
||||
func typeIsHash(t tomlType) bool {
|
||||
return typeEqual(t, tomlHash) || typeEqual(t, tomlArrayHash)
|
||||
}
|
||||
|
||||
type tomlBaseType string
|
||||
|
||||
func (btype tomlBaseType) typeString() string {
|
||||
return string(btype)
|
||||
}
|
||||
|
||||
func (btype tomlBaseType) String() string {
|
||||
return btype.typeString()
|
||||
}
|
||||
|
||||
var (
|
||||
tomlInteger tomlBaseType = "Integer"
|
||||
tomlFloat tomlBaseType = "Float"
|
||||
tomlDatetime tomlBaseType = "Datetime"
|
||||
tomlString tomlBaseType = "String"
|
||||
tomlBool tomlBaseType = "Bool"
|
||||
tomlArray tomlBaseType = "Array"
|
||||
tomlHash tomlBaseType = "Hash"
|
||||
tomlArrayHash tomlBaseType = "ArrayHash"
|
||||
)
|
||||
|
||||
// typeOfPrimitive returns a tomlType of any primitive value in TOML.
|
||||
// Primitive values are: Integer, Float, Datetime, String and Bool.
|
||||
//
|
||||
// Passing a lexer item other than the following will cause a BUG message
|
||||
// to occur: itemString, itemBool, itemInteger, itemFloat, itemDatetime.
|
||||
func (p *parser) typeOfPrimitive(lexItem item) tomlType {
|
||||
switch lexItem.typ {
|
||||
case itemInteger:
|
||||
return tomlInteger
|
||||
case itemFloat:
|
||||
return tomlFloat
|
||||
case itemDatetime:
|
||||
return tomlDatetime
|
||||
case itemString:
|
||||
return tomlString
|
||||
case itemMultilineString:
|
||||
return tomlString
|
||||
case itemRawString:
|
||||
return tomlString
|
||||
case itemRawMultilineString:
|
||||
return tomlString
|
||||
case itemBool:
|
||||
return tomlBool
|
||||
}
|
||||
p.bug("Cannot infer primitive type of lex item '%s'.", lexItem)
|
||||
panic("unreachable")
|
||||
}
|
||||
|
||||
// typeOfArray returns a tomlType for an array given a list of types of its
|
||||
// values.
|
||||
//
|
||||
// In the current spec, if an array is homogeneous, then its type is always
|
||||
// "Array". If the array is not homogeneous, an error is generated.
|
||||
func (p *parser) typeOfArray(types []tomlType) tomlType {
|
||||
// Empty arrays are cool.
|
||||
if len(types) == 0 {
|
||||
return tomlArray
|
||||
}
|
||||
|
||||
theType := types[0]
|
||||
for _, t := range types[1:] {
|
||||
if !typeEqual(theType, t) {
|
||||
p.panicf("Array contains values of type '%s' and '%s', but "+
|
||||
"arrays must be homogeneous.", theType, t)
|
||||
}
|
||||
}
|
||||
return tomlArray
|
||||
}
|
||||
|
|
@ -0,0 +1,242 @@
|
|||
package toml
|
||||
|
||||
// Struct field handling is adapted from code in encoding/json:
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the Go distribution.
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"sort"
|
||||
"sync"
|
||||
)
|
||||
|
||||
// A field represents a single field found in a struct.
|
||||
type field struct {
|
||||
name string // the name of the field (`toml` tag included)
|
||||
tag bool // whether field has a `toml` tag
|
||||
index []int // represents the depth of an anonymous field
|
||||
typ reflect.Type // the type of the field
|
||||
}
|
||||
|
||||
// byName sorts field by name, breaking ties with depth,
|
||||
// then breaking ties with "name came from toml tag", then
|
||||
// breaking ties with index sequence.
|
||||
type byName []field
|
||||
|
||||
func (x byName) Len() int { return len(x) }
|
||||
|
||||
func (x byName) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
|
||||
|
||||
func (x byName) Less(i, j int) bool {
|
||||
if x[i].name != x[j].name {
|
||||
return x[i].name < x[j].name
|
||||
}
|
||||
if len(x[i].index) != len(x[j].index) {
|
||||
return len(x[i].index) < len(x[j].index)
|
||||
}
|
||||
if x[i].tag != x[j].tag {
|
||||
return x[i].tag
|
||||
}
|
||||
return byIndex(x).Less(i, j)
|
||||
}
|
||||
|
||||
// byIndex sorts field by index sequence.
|
||||
type byIndex []field
|
||||
|
||||
func (x byIndex) Len() int { return len(x) }
|
||||
|
||||
func (x byIndex) Swap(i, j int) { x[i], x[j] = x[j], x[i] }
|
||||
|
||||
func (x byIndex) Less(i, j int) bool {
|
||||
for k, xik := range x[i].index {
|
||||
if k >= len(x[j].index) {
|
||||
return false
|
||||
}
|
||||
if xik != x[j].index[k] {
|
||||
return xik < x[j].index[k]
|
||||
}
|
||||
}
|
||||
return len(x[i].index) < len(x[j].index)
|
||||
}
|
||||
|
||||
// typeFields returns a list of fields that TOML should recognize for the given
|
||||
// type. The algorithm is breadth-first search over the set of structs to
|
||||
// include - the top struct and then any reachable anonymous structs.
|
||||
func typeFields(t reflect.Type) []field {
|
||||
// Anonymous fields to explore at the current level and the next.
|
||||
current := []field{}
|
||||
next := []field{{typ: t}}
|
||||
|
||||
// Count of queued names for current level and the next.
|
||||
count := map[reflect.Type]int{}
|
||||
nextCount := map[reflect.Type]int{}
|
||||
|
||||
// Types already visited at an earlier level.
|
||||
visited := map[reflect.Type]bool{}
|
||||
|
||||
// Fields found.
|
||||
var fields []field
|
||||
|
||||
for len(next) > 0 {
|
||||
current, next = next, current[:0]
|
||||
count, nextCount = nextCount, map[reflect.Type]int{}
|
||||
|
||||
for _, f := range current {
|
||||
if visited[f.typ] {
|
||||
continue
|
||||
}
|
||||
visited[f.typ] = true
|
||||
|
||||
// Scan f.typ for fields to include.
|
||||
for i := 0; i < f.typ.NumField(); i++ {
|
||||
sf := f.typ.Field(i)
|
||||
if sf.PkgPath != "" && !sf.Anonymous { // unexported
|
||||
continue
|
||||
}
|
||||
opts := getOptions(sf.Tag)
|
||||
if opts.skip {
|
||||
continue
|
||||
}
|
||||
index := make([]int, len(f.index)+1)
|
||||
copy(index, f.index)
|
||||
index[len(f.index)] = i
|
||||
|
||||
ft := sf.Type
|
||||
if ft.Name() == "" && ft.Kind() == reflect.Ptr {
|
||||
// Follow pointer.
|
||||
ft = ft.Elem()
|
||||
}
|
||||
|
||||
// Record found field and index sequence.
|
||||
if opts.name != "" || !sf.Anonymous || ft.Kind() != reflect.Struct {
|
||||
tagged := opts.name != ""
|
||||
name := opts.name
|
||||
if name == "" {
|
||||
name = sf.Name
|
||||
}
|
||||
fields = append(fields, field{name, tagged, index, ft})
|
||||
if count[f.typ] > 1 {
|
||||
// If there were multiple instances, add a second,
|
||||
// so that the annihilation code will see a duplicate.
|
||||
// It only cares about the distinction between 1 or 2,
|
||||
// so don't bother generating any more copies.
|
||||
fields = append(fields, fields[len(fields)-1])
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// Record new anonymous struct to explore in next round.
|
||||
nextCount[ft]++
|
||||
if nextCount[ft] == 1 {
|
||||
f := field{name: ft.Name(), index: index, typ: ft}
|
||||
next = append(next, f)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
sort.Sort(byName(fields))
|
||||
|
||||
// Delete all fields that are hidden by the Go rules for embedded fields,
|
||||
// except that fields with TOML tags are promoted.
|
||||
|
||||
// The fields are sorted in primary order of name, secondary order
|
||||
// of field index length. Loop over names; for each name, delete
|
||||
// hidden fields by choosing the one dominant field that survives.
|
||||
out := fields[:0]
|
||||
for advance, i := 0, 0; i < len(fields); i += advance {
|
||||
// One iteration per name.
|
||||
// Find the sequence of fields with the name of this first field.
|
||||
fi := fields[i]
|
||||
name := fi.name
|
||||
for advance = 1; i+advance < len(fields); advance++ {
|
||||
fj := fields[i+advance]
|
||||
if fj.name != name {
|
||||
break
|
||||
}
|
||||
}
|
||||
if advance == 1 { // Only one field with this name
|
||||
out = append(out, fi)
|
||||
continue
|
||||
}
|
||||
dominant, ok := dominantField(fields[i : i+advance])
|
||||
if ok {
|
||||
out = append(out, dominant)
|
||||
}
|
||||
}
|
||||
|
||||
fields = out
|
||||
sort.Sort(byIndex(fields))
|
||||
|
||||
return fields
|
||||
}
|
||||
|
||||
// dominantField looks through the fields, all of which are known to
|
||||
// have the same name, to find the single field that dominates the
|
||||
// others using Go's embedding rules, modified by the presence of
|
||||
// TOML tags. If there are multiple top-level fields, the boolean
|
||||
// will be false: This condition is an error in Go and we skip all
|
||||
// the fields.
|
||||
func dominantField(fields []field) (field, bool) {
|
||||
// The fields are sorted in increasing index-length order. The winner
|
||||
// must therefore be one with the shortest index length. Drop all
|
||||
// longer entries, which is easy: just truncate the slice.
|
||||
length := len(fields[0].index)
|
||||
tagged := -1 // Index of first tagged field.
|
||||
for i, f := range fields {
|
||||
if len(f.index) > length {
|
||||
fields = fields[:i]
|
||||
break
|
||||
}
|
||||
if f.tag {
|
||||
if tagged >= 0 {
|
||||
// Multiple tagged fields at the same level: conflict.
|
||||
// Return no field.
|
||||
return field{}, false
|
||||
}
|
||||
tagged = i
|
||||
}
|
||||
}
|
||||
if tagged >= 0 {
|
||||
return fields[tagged], true
|
||||
}
|
||||
// All remaining fields have the same length. If there's more than one,
|
||||
// we have a conflict (two fields named "X" at the same level) and we
|
||||
// return no field.
|
||||
if len(fields) > 1 {
|
||||
return field{}, false
|
||||
}
|
||||
return fields[0], true
|
||||
}
|
||||
|
||||
var fieldCache struct {
|
||||
sync.RWMutex
|
||||
m map[reflect.Type][]field
|
||||
}
|
||||
|
||||
// cachedTypeFields is like typeFields but uses a cache to avoid repeated work.
|
||||
func cachedTypeFields(t reflect.Type) []field {
|
||||
fieldCache.RLock()
|
||||
f := fieldCache.m[t]
|
||||
fieldCache.RUnlock()
|
||||
if f != nil {
|
||||
return f
|
||||
}
|
||||
|
||||
// Compute fields without lock.
|
||||
// Might duplicate effort but won't hold other computations back.
|
||||
f = typeFields(t)
|
||||
if f == nil {
|
||||
f = []field{}
|
||||
}
|
||||
|
||||
fieldCache.Lock()
|
||||
if fieldCache.m == nil {
|
||||
fieldCache.m = map[reflect.Type][]field{}
|
||||
}
|
||||
fieldCache.m[t] = f
|
||||
fieldCache.Unlock()
|
||||
return f
|
||||
}
|
||||
|
|
@ -0,0 +1,20 @@
|
|||
Copyright (C) 2013 Blake Mizerany
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,316 @@
|
|||
// Package quantile computes approximate quantiles over an unbounded data
|
||||
// stream within low memory and CPU bounds.
|
||||
//
|
||||
// A small amount of accuracy is traded to achieve the above properties.
|
||||
//
|
||||
// Multiple streams can be merged before calling Query to generate a single set
|
||||
// of results. This is meaningful when the streams represent the same type of
|
||||
// data. See Merge and Samples.
|
||||
//
|
||||
// For more detailed information about the algorithm used, see:
|
||||
//
|
||||
// Effective Computation of Biased Quantiles over Data Streams
|
||||
//
|
||||
// http://www.cs.rutgers.edu/~muthu/bquant.pdf
|
||||
package quantile
|
||||
|
||||
import (
|
||||
"math"
|
||||
"sort"
|
||||
)
|
||||
|
||||
// Sample holds an observed value and meta information for compression. JSON
|
||||
// tags have been added for convenience.
|
||||
type Sample struct {
|
||||
Value float64 `json:",string"`
|
||||
Width float64 `json:",string"`
|
||||
Delta float64 `json:",string"`
|
||||
}
|
||||
|
||||
// Samples represents a slice of samples. It implements sort.Interface.
|
||||
type Samples []Sample
|
||||
|
||||
func (a Samples) Len() int { return len(a) }
|
||||
func (a Samples) Less(i, j int) bool { return a[i].Value < a[j].Value }
|
||||
func (a Samples) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
|
||||
|
||||
type invariant func(s *stream, r float64) float64
|
||||
|
||||
// NewLowBiased returns an initialized Stream for low-biased quantiles
|
||||
// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
|
||||
// error guarantees can still be given even for the lower ranks of the data
|
||||
// distribution.
|
||||
//
|
||||
// The provided epsilon is a relative error, i.e. the true quantile of a value
|
||||
// returned by a query is guaranteed to be within (1±Epsilon)*Quantile.
|
||||
//
|
||||
// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
|
||||
// properties.
|
||||
func NewLowBiased(epsilon float64) *Stream {
|
||||
ƒ := func(s *stream, r float64) float64 {
|
||||
return 2 * epsilon * r
|
||||
}
|
||||
return newStream(ƒ)
|
||||
}
|
||||
|
||||
// NewHighBiased returns an initialized Stream for high-biased quantiles
|
||||
// (e.g. 0.01, 0.1, 0.5) where the needed quantiles are not known a priori, but
|
||||
// error guarantees can still be given even for the higher ranks of the data
|
||||
// distribution.
|
||||
//
|
||||
// The provided epsilon is a relative error, i.e. the true quantile of a value
|
||||
// returned by a query is guaranteed to be within 1-(1±Epsilon)*(1-Quantile).
|
||||
//
|
||||
// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error
|
||||
// properties.
|
||||
func NewHighBiased(epsilon float64) *Stream {
|
||||
ƒ := func(s *stream, r float64) float64 {
|
||||
return 2 * epsilon * (s.n - r)
|
||||
}
|
||||
return newStream(ƒ)
|
||||
}
|
||||
|
||||
// NewTargeted returns an initialized Stream concerned with a particular set of
|
||||
// quantile values that are supplied a priori. Knowing these a priori reduces
|
||||
// space and computation time. The targets map maps the desired quantiles to
|
||||
// their absolute errors, i.e. the true quantile of a value returned by a query
|
||||
// is guaranteed to be within (Quantile±Epsilon).
|
||||
//
|
||||
// See http://www.cs.rutgers.edu/~muthu/bquant.pdf for time, space, and error properties.
|
||||
func NewTargeted(targetMap map[float64]float64) *Stream {
|
||||
// Convert map to slice to avoid slow iterations on a map.
|
||||
// ƒ is called on the hot path, so converting the map to a slice
|
||||
// beforehand results in significant CPU savings.
|
||||
targets := targetMapToSlice(targetMap)
|
||||
|
||||
ƒ := func(s *stream, r float64) float64 {
|
||||
var m = math.MaxFloat64
|
||||
var f float64
|
||||
for _, t := range targets {
|
||||
if t.quantile*s.n <= r {
|
||||
f = (2 * t.epsilon * r) / t.quantile
|
||||
} else {
|
||||
f = (2 * t.epsilon * (s.n - r)) / (1 - t.quantile)
|
||||
}
|
||||
if f < m {
|
||||
m = f
|
||||
}
|
||||
}
|
||||
return m
|
||||
}
|
||||
return newStream(ƒ)
|
||||
}
|
||||
|
||||
type target struct {
|
||||
quantile float64
|
||||
epsilon float64
|
||||
}
|
||||
|
||||
func targetMapToSlice(targetMap map[float64]float64) []target {
|
||||
targets := make([]target, 0, len(targetMap))
|
||||
|
||||
for quantile, epsilon := range targetMap {
|
||||
t := target{
|
||||
quantile: quantile,
|
||||
epsilon: epsilon,
|
||||
}
|
||||
targets = append(targets, t)
|
||||
}
|
||||
|
||||
return targets
|
||||
}
|
||||
|
||||
// Stream computes quantiles for a stream of float64s. It is not thread-safe by
|
||||
// design. Take care when using across multiple goroutines.
|
||||
type Stream struct {
|
||||
*stream
|
||||
b Samples
|
||||
sorted bool
|
||||
}
|
||||
|
||||
func newStream(ƒ invariant) *Stream {
|
||||
x := &stream{ƒ: ƒ}
|
||||
return &Stream{x, make(Samples, 0, 500), true}
|
||||
}
|
||||
|
||||
// Insert inserts v into the stream.
|
||||
func (s *Stream) Insert(v float64) {
|
||||
s.insert(Sample{Value: v, Width: 1})
|
||||
}
|
||||
|
||||
func (s *Stream) insert(sample Sample) {
|
||||
s.b = append(s.b, sample)
|
||||
s.sorted = false
|
||||
if len(s.b) == cap(s.b) {
|
||||
s.flush()
|
||||
}
|
||||
}
|
||||
|
||||
// Query returns the computed qth percentiles value. If s was created with
|
||||
// NewTargeted, and q is not in the set of quantiles provided a priori, Query
|
||||
// will return an unspecified result.
|
||||
func (s *Stream) Query(q float64) float64 {
|
||||
if !s.flushed() {
|
||||
// Fast path when there hasn't been enough data for a flush;
|
||||
// this also yields better accuracy for small sets of data.
|
||||
l := len(s.b)
|
||||
if l == 0 {
|
||||
return 0
|
||||
}
|
||||
i := int(math.Ceil(float64(l) * q))
|
||||
if i > 0 {
|
||||
i -= 1
|
||||
}
|
||||
s.maybeSort()
|
||||
return s.b[i].Value
|
||||
}
|
||||
s.flush()
|
||||
return s.stream.query(q)
|
||||
}
|
||||
|
||||
// Merge merges samples into the underlying streams samples. This is handy when
|
||||
// merging multiple streams from separate threads, database shards, etc.
|
||||
//
|
||||
// ATTENTION: This method is broken and does not yield correct results. The
|
||||
// underlying algorithm is not capable of merging streams correctly.
|
||||
func (s *Stream) Merge(samples Samples) {
|
||||
sort.Sort(samples)
|
||||
s.stream.merge(samples)
|
||||
}
|
||||
|
||||
// Reset reinitializes and clears the list reusing the samples buffer memory.
|
||||
func (s *Stream) Reset() {
|
||||
s.stream.reset()
|
||||
s.b = s.b[:0]
|
||||
}
|
||||
|
||||
// Samples returns stream samples held by s.
|
||||
func (s *Stream) Samples() Samples {
|
||||
if !s.flushed() {
|
||||
return s.b
|
||||
}
|
||||
s.flush()
|
||||
return s.stream.samples()
|
||||
}
|
||||
|
||||
// Count returns the total number of samples observed in the stream
|
||||
// since initialization.
|
||||
func (s *Stream) Count() int {
|
||||
return len(s.b) + s.stream.count()
|
||||
}
|
||||
|
||||
func (s *Stream) flush() {
|
||||
s.maybeSort()
|
||||
s.stream.merge(s.b)
|
||||
s.b = s.b[:0]
|
||||
}
|
||||
|
||||
func (s *Stream) maybeSort() {
|
||||
if !s.sorted {
|
||||
s.sorted = true
|
||||
sort.Sort(s.b)
|
||||
}
|
||||
}
|
||||
|
||||
func (s *Stream) flushed() bool {
|
||||
return len(s.stream.l) > 0
|
||||
}
|
||||
|
||||
type stream struct {
|
||||
n float64
|
||||
l []Sample
|
||||
ƒ invariant
|
||||
}
|
||||
|
||||
func (s *stream) reset() {
|
||||
s.l = s.l[:0]
|
||||
s.n = 0
|
||||
}
|
||||
|
||||
func (s *stream) insert(v float64) {
|
||||
s.merge(Samples{{v, 1, 0}})
|
||||
}
|
||||
|
||||
func (s *stream) merge(samples Samples) {
|
||||
// TODO(beorn7): This tries to merge not only individual samples, but
|
||||
// whole summaries. The paper doesn't mention merging summaries at
|
||||
// all. Unittests show that the merging is inaccurate. Find out how to
|
||||
// do merges properly.
|
||||
var r float64
|
||||
i := 0
|
||||
for _, sample := range samples {
|
||||
for ; i < len(s.l); i++ {
|
||||
c := s.l[i]
|
||||
if c.Value > sample.Value {
|
||||
// Insert at position i.
|
||||
s.l = append(s.l, Sample{})
|
||||
copy(s.l[i+1:], s.l[i:])
|
||||
s.l[i] = Sample{
|
||||
sample.Value,
|
||||
sample.Width,
|
||||
math.Max(sample.Delta, math.Floor(s.ƒ(s, r))-1),
|
||||
// TODO(beorn7): How to calculate delta correctly?
|
||||
}
|
||||
i++
|
||||
goto inserted
|
||||
}
|
||||
r += c.Width
|
||||
}
|
||||
s.l = append(s.l, Sample{sample.Value, sample.Width, 0})
|
||||
i++
|
||||
inserted:
|
||||
s.n += sample.Width
|
||||
r += sample.Width
|
||||
}
|
||||
s.compress()
|
||||
}
|
||||
|
||||
func (s *stream) count() int {
|
||||
return int(s.n)
|
||||
}
|
||||
|
||||
func (s *stream) query(q float64) float64 {
|
||||
t := math.Ceil(q * s.n)
|
||||
t += math.Ceil(s.ƒ(s, t) / 2)
|
||||
p := s.l[0]
|
||||
var r float64
|
||||
for _, c := range s.l[1:] {
|
||||
r += p.Width
|
||||
if r+c.Width+c.Delta > t {
|
||||
return p.Value
|
||||
}
|
||||
p = c
|
||||
}
|
||||
return p.Value
|
||||
}
|
||||
|
||||
func (s *stream) compress() {
|
||||
if len(s.l) < 2 {
|
||||
return
|
||||
}
|
||||
x := s.l[len(s.l)-1]
|
||||
xi := len(s.l) - 1
|
||||
r := s.n - 1 - x.Width
|
||||
|
||||
for i := len(s.l) - 2; i >= 0; i-- {
|
||||
c := s.l[i]
|
||||
if c.Width+x.Width+x.Delta <= s.ƒ(s, r) {
|
||||
x.Width += c.Width
|
||||
s.l[xi] = x
|
||||
// Remove element at i.
|
||||
copy(s.l[i:], s.l[i+1:])
|
||||
s.l = s.l[:len(s.l)-1]
|
||||
xi -= 1
|
||||
} else {
|
||||
x = c
|
||||
xi = i
|
||||
}
|
||||
r -= c.Width
|
||||
}
|
||||
}
|
||||
|
||||
func (s *stream) samples() Samples {
|
||||
samples := make(Samples, len(s.l))
|
||||
copy(samples, s.l)
|
||||
return samples
|
||||
}
|
||||
|
|
@ -0,0 +1,8 @@
|
|||
language: go
|
||||
go:
|
||||
- "1.x"
|
||||
- master
|
||||
env:
|
||||
- TAGS=""
|
||||
- TAGS="-tags purego"
|
||||
script: go test $TAGS -v ./...
|
||||
|
|
@ -0,0 +1,22 @@
|
|||
Copyright (c) 2016 Caleb Spare
|
||||
|
||||
MIT License
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining
|
||||
a copy of this software and associated documentation files (the
|
||||
"Software"), to deal in the Software without restriction, including
|
||||
without limitation the rights to use, copy, modify, merge, publish,
|
||||
distribute, sublicense, and/or sell copies of the Software, and to
|
||||
permit persons to whom the Software is furnished to do so, subject to
|
||||
the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be
|
||||
included in all copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
||||
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
||||
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
||||
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
||||
|
|
@ -0,0 +1,67 @@
|
|||
# xxhash
|
||||
|
||||
[](https://godoc.org/github.com/cespare/xxhash)
|
||||
[](https://travis-ci.org/cespare/xxhash)
|
||||
|
||||
xxhash is a Go implementation of the 64-bit
|
||||
[xxHash](http://cyan4973.github.io/xxHash/) algorithm, XXH64. This is a
|
||||
high-quality hashing algorithm that is much faster than anything in the Go
|
||||
standard library.
|
||||
|
||||
This package provides a straightforward API:
|
||||
|
||||
```
|
||||
func Sum64(b []byte) uint64
|
||||
func Sum64String(s string) uint64
|
||||
type Digest struct{ ... }
|
||||
func New() *Digest
|
||||
```
|
||||
|
||||
The `Digest` type implements hash.Hash64. Its key methods are:
|
||||
|
||||
```
|
||||
func (*Digest) Write([]byte) (int, error)
|
||||
func (*Digest) WriteString(string) (int, error)
|
||||
func (*Digest) Sum64() uint64
|
||||
```
|
||||
|
||||
This implementation provides a fast pure-Go implementation and an even faster
|
||||
assembly implementation for amd64.
|
||||
|
||||
## Compatibility
|
||||
|
||||
This package is in a module and the latest code is in version 2 of the module.
|
||||
You need a version of Go with at least "minimal module compatibility" to use
|
||||
github.com/cespare/xxhash/v2:
|
||||
|
||||
* 1.9.7+ for Go 1.9
|
||||
* 1.10.3+ for Go 1.10
|
||||
* Go 1.11 or later
|
||||
|
||||
I recommend using the latest release of Go.
|
||||
|
||||
## Benchmarks
|
||||
|
||||
Here are some quick benchmarks comparing the pure-Go and assembly
|
||||
implementations of Sum64.
|
||||
|
||||
| input size | purego | asm |
|
||||
| --- | --- | --- |
|
||||
| 5 B | 979.66 MB/s | 1291.17 MB/s |
|
||||
| 100 B | 7475.26 MB/s | 7973.40 MB/s |
|
||||
| 4 KB | 17573.46 MB/s | 17602.65 MB/s |
|
||||
| 10 MB | 17131.46 MB/s | 17142.16 MB/s |
|
||||
|
||||
These numbers were generated on Ubuntu 18.04 with an Intel i7-8700K CPU using
|
||||
the following commands under Go 1.11.2:
|
||||
|
||||
```
|
||||
$ go test -tags purego -benchtime 10s -bench '/xxhash,direct,bytes'
|
||||
$ go test -benchtime 10s -bench '/xxhash,direct,bytes'
|
||||
```
|
||||
|
||||
## Projects using this package
|
||||
|
||||
- [InfluxDB](https://github.com/influxdata/influxdb)
|
||||
- [Prometheus](https://github.com/prometheus/prometheus)
|
||||
- [FreeCache](https://github.com/coocood/freecache)
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
module github.com/cespare/xxhash/v2
|
||||
|
||||
go 1.11
|
||||
|
|
@ -0,0 +1,236 @@
|
|||
// Package xxhash implements the 64-bit variant of xxHash (XXH64) as described
|
||||
// at http://cyan4973.github.io/xxHash/.
|
||||
package xxhash
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"math/bits"
|
||||
)
|
||||
|
||||
const (
|
||||
prime1 uint64 = 11400714785074694791
|
||||
prime2 uint64 = 14029467366897019727
|
||||
prime3 uint64 = 1609587929392839161
|
||||
prime4 uint64 = 9650029242287828579
|
||||
prime5 uint64 = 2870177450012600261
|
||||
)
|
||||
|
||||
// NOTE(caleb): I'm using both consts and vars of the primes. Using consts where
|
||||
// possible in the Go code is worth a small (but measurable) performance boost
|
||||
// by avoiding some MOVQs. Vars are needed for the asm and also are useful for
|
||||
// convenience in the Go code in a few places where we need to intentionally
|
||||
// avoid constant arithmetic (e.g., v1 := prime1 + prime2 fails because the
|
||||
// result overflows a uint64).
|
||||
var (
|
||||
prime1v = prime1
|
||||
prime2v = prime2
|
||||
prime3v = prime3
|
||||
prime4v = prime4
|
||||
prime5v = prime5
|
||||
)
|
||||
|
||||
// Digest implements hash.Hash64.
|
||||
type Digest struct {
|
||||
v1 uint64
|
||||
v2 uint64
|
||||
v3 uint64
|
||||
v4 uint64
|
||||
total uint64
|
||||
mem [32]byte
|
||||
n int // how much of mem is used
|
||||
}
|
||||
|
||||
// New creates a new Digest that computes the 64-bit xxHash algorithm.
|
||||
func New() *Digest {
|
||||
var d Digest
|
||||
d.Reset()
|
||||
return &d
|
||||
}
|
||||
|
||||
// Reset clears the Digest's state so that it can be reused.
|
||||
func (d *Digest) Reset() {
|
||||
d.v1 = prime1v + prime2
|
||||
d.v2 = prime2
|
||||
d.v3 = 0
|
||||
d.v4 = -prime1v
|
||||
d.total = 0
|
||||
d.n = 0
|
||||
}
|
||||
|
||||
// Size always returns 8 bytes.
|
||||
func (d *Digest) Size() int { return 8 }
|
||||
|
||||
// BlockSize always returns 32 bytes.
|
||||
func (d *Digest) BlockSize() int { return 32 }
|
||||
|
||||
// Write adds more data to d. It always returns len(b), nil.
|
||||
func (d *Digest) Write(b []byte) (n int, err error) {
|
||||
n = len(b)
|
||||
d.total += uint64(n)
|
||||
|
||||
if d.n+n < 32 {
|
||||
// This new data doesn't even fill the current block.
|
||||
copy(d.mem[d.n:], b)
|
||||
d.n += n
|
||||
return
|
||||
}
|
||||
|
||||
if d.n > 0 {
|
||||
// Finish off the partial block.
|
||||
copy(d.mem[d.n:], b)
|
||||
d.v1 = round(d.v1, u64(d.mem[0:8]))
|
||||
d.v2 = round(d.v2, u64(d.mem[8:16]))
|
||||
d.v3 = round(d.v3, u64(d.mem[16:24]))
|
||||
d.v4 = round(d.v4, u64(d.mem[24:32]))
|
||||
b = b[32-d.n:]
|
||||
d.n = 0
|
||||
}
|
||||
|
||||
if len(b) >= 32 {
|
||||
// One or more full blocks left.
|
||||
nw := writeBlocks(d, b)
|
||||
b = b[nw:]
|
||||
}
|
||||
|
||||
// Store any remaining partial block.
|
||||
copy(d.mem[:], b)
|
||||
d.n = len(b)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Sum appends the current hash to b and returns the resulting slice.
|
||||
func (d *Digest) Sum(b []byte) []byte {
|
||||
s := d.Sum64()
|
||||
return append(
|
||||
b,
|
||||
byte(s>>56),
|
||||
byte(s>>48),
|
||||
byte(s>>40),
|
||||
byte(s>>32),
|
||||
byte(s>>24),
|
||||
byte(s>>16),
|
||||
byte(s>>8),
|
||||
byte(s),
|
||||
)
|
||||
}
|
||||
|
||||
// Sum64 returns the current hash.
|
||||
func (d *Digest) Sum64() uint64 {
|
||||
var h uint64
|
||||
|
||||
if d.total >= 32 {
|
||||
v1, v2, v3, v4 := d.v1, d.v2, d.v3, d.v4
|
||||
h = rol1(v1) + rol7(v2) + rol12(v3) + rol18(v4)
|
||||
h = mergeRound(h, v1)
|
||||
h = mergeRound(h, v2)
|
||||
h = mergeRound(h, v3)
|
||||
h = mergeRound(h, v4)
|
||||
} else {
|
||||
h = d.v3 + prime5
|
||||
}
|
||||
|
||||
h += d.total
|
||||
|
||||
i, end := 0, d.n
|
||||
for ; i+8 <= end; i += 8 {
|
||||
k1 := round(0, u64(d.mem[i:i+8]))
|
||||
h ^= k1
|
||||
h = rol27(h)*prime1 + prime4
|
||||
}
|
||||
if i+4 <= end {
|
||||
h ^= uint64(u32(d.mem[i:i+4])) * prime1
|
||||
h = rol23(h)*prime2 + prime3
|
||||
i += 4
|
||||
}
|
||||
for i < end {
|
||||
h ^= uint64(d.mem[i]) * prime5
|
||||
h = rol11(h) * prime1
|
||||
i++
|
||||
}
|
||||
|
||||
h ^= h >> 33
|
||||
h *= prime2
|
||||
h ^= h >> 29
|
||||
h *= prime3
|
||||
h ^= h >> 32
|
||||
|
||||
return h
|
||||
}
|
||||
|
||||
const (
|
||||
magic = "xxh\x06"
|
||||
marshaledSize = len(magic) + 8*5 + 32
|
||||
)
|
||||
|
||||
// MarshalBinary implements the encoding.BinaryMarshaler interface.
|
||||
func (d *Digest) MarshalBinary() ([]byte, error) {
|
||||
b := make([]byte, 0, marshaledSize)
|
||||
b = append(b, magic...)
|
||||
b = appendUint64(b, d.v1)
|
||||
b = appendUint64(b, d.v2)
|
||||
b = appendUint64(b, d.v3)
|
||||
b = appendUint64(b, d.v4)
|
||||
b = appendUint64(b, d.total)
|
||||
b = append(b, d.mem[:d.n]...)
|
||||
b = b[:len(b)+len(d.mem)-d.n]
|
||||
return b, nil
|
||||
}
|
||||
|
||||
// UnmarshalBinary implements the encoding.BinaryUnmarshaler interface.
|
||||
func (d *Digest) UnmarshalBinary(b []byte) error {
|
||||
if len(b) < len(magic) || string(b[:len(magic)]) != magic {
|
||||
return errors.New("xxhash: invalid hash state identifier")
|
||||
}
|
||||
if len(b) != marshaledSize {
|
||||
return errors.New("xxhash: invalid hash state size")
|
||||
}
|
||||
b = b[len(magic):]
|
||||
b, d.v1 = consumeUint64(b)
|
||||
b, d.v2 = consumeUint64(b)
|
||||
b, d.v3 = consumeUint64(b)
|
||||
b, d.v4 = consumeUint64(b)
|
||||
b, d.total = consumeUint64(b)
|
||||
copy(d.mem[:], b)
|
||||
b = b[len(d.mem):]
|
||||
d.n = int(d.total % uint64(len(d.mem)))
|
||||
return nil
|
||||
}
|
||||
|
||||
func appendUint64(b []byte, x uint64) []byte {
|
||||
var a [8]byte
|
||||
binary.LittleEndian.PutUint64(a[:], x)
|
||||
return append(b, a[:]...)
|
||||
}
|
||||
|
||||
func consumeUint64(b []byte) ([]byte, uint64) {
|
||||
x := u64(b)
|
||||
return b[8:], x
|
||||
}
|
||||
|
||||
func u64(b []byte) uint64 { return binary.LittleEndian.Uint64(b) }
|
||||
func u32(b []byte) uint32 { return binary.LittleEndian.Uint32(b) }
|
||||
|
||||
func round(acc, input uint64) uint64 {
|
||||
acc += input * prime2
|
||||
acc = rol31(acc)
|
||||
acc *= prime1
|
||||
return acc
|
||||
}
|
||||
|
||||
func mergeRound(acc, val uint64) uint64 {
|
||||
val = round(0, val)
|
||||
acc ^= val
|
||||
acc = acc*prime1 + prime4
|
||||
return acc
|
||||
}
|
||||
|
||||
func rol1(x uint64) uint64 { return bits.RotateLeft64(x, 1) }
|
||||
func rol7(x uint64) uint64 { return bits.RotateLeft64(x, 7) }
|
||||
func rol11(x uint64) uint64 { return bits.RotateLeft64(x, 11) }
|
||||
func rol12(x uint64) uint64 { return bits.RotateLeft64(x, 12) }
|
||||
func rol18(x uint64) uint64 { return bits.RotateLeft64(x, 18) }
|
||||
func rol23(x uint64) uint64 { return bits.RotateLeft64(x, 23) }
|
||||
func rol27(x uint64) uint64 { return bits.RotateLeft64(x, 27) }
|
||||
func rol31(x uint64) uint64 { return bits.RotateLeft64(x, 31) }
|
||||
|
|
@ -0,0 +1,13 @@
|
|||
// +build !appengine
|
||||
// +build gc
|
||||
// +build !purego
|
||||
|
||||
package xxhash
|
||||
|
||||
// Sum64 computes the 64-bit xxHash digest of b.
|
||||
//
|
||||
//go:noescape
|
||||
func Sum64(b []byte) uint64
|
||||
|
||||
//go:noescape
|
||||
func writeBlocks(d *Digest, b []byte) int
|
||||
|
|
@ -0,0 +1,215 @@
|
|||
// +build !appengine
|
||||
// +build gc
|
||||
// +build !purego
|
||||
|
||||
#include "textflag.h"
|
||||
|
||||
// Register allocation:
|
||||
// AX h
|
||||
// CX pointer to advance through b
|
||||
// DX n
|
||||
// BX loop end
|
||||
// R8 v1, k1
|
||||
// R9 v2
|
||||
// R10 v3
|
||||
// R11 v4
|
||||
// R12 tmp
|
||||
// R13 prime1v
|
||||
// R14 prime2v
|
||||
// R15 prime4v
|
||||
|
||||
// round reads from and advances the buffer pointer in CX.
|
||||
// It assumes that R13 has prime1v and R14 has prime2v.
|
||||
#define round(r) \
|
||||
MOVQ (CX), R12 \
|
||||
ADDQ $8, CX \
|
||||
IMULQ R14, R12 \
|
||||
ADDQ R12, r \
|
||||
ROLQ $31, r \
|
||||
IMULQ R13, r
|
||||
|
||||
// mergeRound applies a merge round on the two registers acc and val.
|
||||
// It assumes that R13 has prime1v, R14 has prime2v, and R15 has prime4v.
|
||||
#define mergeRound(acc, val) \
|
||||
IMULQ R14, val \
|
||||
ROLQ $31, val \
|
||||
IMULQ R13, val \
|
||||
XORQ val, acc \
|
||||
IMULQ R13, acc \
|
||||
ADDQ R15, acc
|
||||
|
||||
// func Sum64(b []byte) uint64
|
||||
TEXT ·Sum64(SB), NOSPLIT, $0-32
|
||||
// Load fixed primes.
|
||||
MOVQ ·prime1v(SB), R13
|
||||
MOVQ ·prime2v(SB), R14
|
||||
MOVQ ·prime4v(SB), R15
|
||||
|
||||
// Load slice.
|
||||
MOVQ b_base+0(FP), CX
|
||||
MOVQ b_len+8(FP), DX
|
||||
LEAQ (CX)(DX*1), BX
|
||||
|
||||
// The first loop limit will be len(b)-32.
|
||||
SUBQ $32, BX
|
||||
|
||||
// Check whether we have at least one block.
|
||||
CMPQ DX, $32
|
||||
JLT noBlocks
|
||||
|
||||
// Set up initial state (v1, v2, v3, v4).
|
||||
MOVQ R13, R8
|
||||
ADDQ R14, R8
|
||||
MOVQ R14, R9
|
||||
XORQ R10, R10
|
||||
XORQ R11, R11
|
||||
SUBQ R13, R11
|
||||
|
||||
// Loop until CX > BX.
|
||||
blockLoop:
|
||||
round(R8)
|
||||
round(R9)
|
||||
round(R10)
|
||||
round(R11)
|
||||
|
||||
CMPQ CX, BX
|
||||
JLE blockLoop
|
||||
|
||||
MOVQ R8, AX
|
||||
ROLQ $1, AX
|
||||
MOVQ R9, R12
|
||||
ROLQ $7, R12
|
||||
ADDQ R12, AX
|
||||
MOVQ R10, R12
|
||||
ROLQ $12, R12
|
||||
ADDQ R12, AX
|
||||
MOVQ R11, R12
|
||||
ROLQ $18, R12
|
||||
ADDQ R12, AX
|
||||
|
||||
mergeRound(AX, R8)
|
||||
mergeRound(AX, R9)
|
||||
mergeRound(AX, R10)
|
||||
mergeRound(AX, R11)
|
||||
|
||||
JMP afterBlocks
|
||||
|
||||
noBlocks:
|
||||
MOVQ ·prime5v(SB), AX
|
||||
|
||||
afterBlocks:
|
||||
ADDQ DX, AX
|
||||
|
||||
// Right now BX has len(b)-32, and we want to loop until CX > len(b)-8.
|
||||
ADDQ $24, BX
|
||||
|
||||
CMPQ CX, BX
|
||||
JG fourByte
|
||||
|
||||
wordLoop:
|
||||
// Calculate k1.
|
||||
MOVQ (CX), R8
|
||||
ADDQ $8, CX
|
||||
IMULQ R14, R8
|
||||
ROLQ $31, R8
|
||||
IMULQ R13, R8
|
||||
|
||||
XORQ R8, AX
|
||||
ROLQ $27, AX
|
||||
IMULQ R13, AX
|
||||
ADDQ R15, AX
|
||||
|
||||
CMPQ CX, BX
|
||||
JLE wordLoop
|
||||
|
||||
fourByte:
|
||||
ADDQ $4, BX
|
||||
CMPQ CX, BX
|
||||
JG singles
|
||||
|
||||
MOVL (CX), R8
|
||||
ADDQ $4, CX
|
||||
IMULQ R13, R8
|
||||
XORQ R8, AX
|
||||
|
||||
ROLQ $23, AX
|
||||
IMULQ R14, AX
|
||||
ADDQ ·prime3v(SB), AX
|
||||
|
||||
singles:
|
||||
ADDQ $4, BX
|
||||
CMPQ CX, BX
|
||||
JGE finalize
|
||||
|
||||
singlesLoop:
|
||||
MOVBQZX (CX), R12
|
||||
ADDQ $1, CX
|
||||
IMULQ ·prime5v(SB), R12
|
||||
XORQ R12, AX
|
||||
|
||||
ROLQ $11, AX
|
||||
IMULQ R13, AX
|
||||
|
||||
CMPQ CX, BX
|
||||
JL singlesLoop
|
||||
|
||||
finalize:
|
||||
MOVQ AX, R12
|
||||
SHRQ $33, R12
|
||||
XORQ R12, AX
|
||||
IMULQ R14, AX
|
||||
MOVQ AX, R12
|
||||
SHRQ $29, R12
|
||||
XORQ R12, AX
|
||||
IMULQ ·prime3v(SB), AX
|
||||
MOVQ AX, R12
|
||||
SHRQ $32, R12
|
||||
XORQ R12, AX
|
||||
|
||||
MOVQ AX, ret+24(FP)
|
||||
RET
|
||||
|
||||
// writeBlocks uses the same registers as above except that it uses AX to store
|
||||
// the d pointer.
|
||||
|
||||
// func writeBlocks(d *Digest, b []byte) int
|
||||
TEXT ·writeBlocks(SB), NOSPLIT, $0-40
|
||||
// Load fixed primes needed for round.
|
||||
MOVQ ·prime1v(SB), R13
|
||||
MOVQ ·prime2v(SB), R14
|
||||
|
||||
// Load slice.
|
||||
MOVQ b_base+8(FP), CX
|
||||
MOVQ b_len+16(FP), DX
|
||||
LEAQ (CX)(DX*1), BX
|
||||
SUBQ $32, BX
|
||||
|
||||
// Load vN from d.
|
||||
MOVQ d+0(FP), AX
|
||||
MOVQ 0(AX), R8 // v1
|
||||
MOVQ 8(AX), R9 // v2
|
||||
MOVQ 16(AX), R10 // v3
|
||||
MOVQ 24(AX), R11 // v4
|
||||
|
||||
// We don't need to check the loop condition here; this function is
|
||||
// always called with at least one block of data to process.
|
||||
blockLoop:
|
||||
round(R8)
|
||||
round(R9)
|
||||
round(R10)
|
||||
round(R11)
|
||||
|
||||
CMPQ CX, BX
|
||||
JLE blockLoop
|
||||
|
||||
// Copy vN back to d.
|
||||
MOVQ R8, 0(AX)
|
||||
MOVQ R9, 8(AX)
|
||||
MOVQ R10, 16(AX)
|
||||
MOVQ R11, 24(AX)
|
||||
|
||||
// The number of bytes written is CX minus the old base pointer.
|
||||
SUBQ b_base+8(FP), CX
|
||||
MOVQ CX, ret+32(FP)
|
||||
|
||||
RET
|
||||
|
|
@ -0,0 +1,76 @@
|
|||
// +build !amd64 appengine !gc purego
|
||||
|
||||
package xxhash
|
||||
|
||||
// Sum64 computes the 64-bit xxHash digest of b.
|
||||
func Sum64(b []byte) uint64 {
|
||||
// A simpler version would be
|
||||
// d := New()
|
||||
// d.Write(b)
|
||||
// return d.Sum64()
|
||||
// but this is faster, particularly for small inputs.
|
||||
|
||||
n := len(b)
|
||||
var h uint64
|
||||
|
||||
if n >= 32 {
|
||||
v1 := prime1v + prime2
|
||||
v2 := prime2
|
||||
v3 := uint64(0)
|
||||
v4 := -prime1v
|
||||
for len(b) >= 32 {
|
||||
v1 = round(v1, u64(b[0:8:len(b)]))
|
||||
v2 = round(v2, u64(b[8:16:len(b)]))
|
||||
v3 = round(v3, u64(b[16:24:len(b)]))
|
||||
v4 = round(v4, u64(b[24:32:len(b)]))
|
||||
b = b[32:len(b):len(b)]
|
||||
}
|
||||
h = rol1(v1) + rol7(v2) + rol12(v3) + rol18(v4)
|
||||
h = mergeRound(h, v1)
|
||||
h = mergeRound(h, v2)
|
||||
h = mergeRound(h, v3)
|
||||
h = mergeRound(h, v4)
|
||||
} else {
|
||||
h = prime5
|
||||
}
|
||||
|
||||
h += uint64(n)
|
||||
|
||||
i, end := 0, len(b)
|
||||
for ; i+8 <= end; i += 8 {
|
||||
k1 := round(0, u64(b[i:i+8:len(b)]))
|
||||
h ^= k1
|
||||
h = rol27(h)*prime1 + prime4
|
||||
}
|
||||
if i+4 <= end {
|
||||
h ^= uint64(u32(b[i:i+4:len(b)])) * prime1
|
||||
h = rol23(h)*prime2 + prime3
|
||||
i += 4
|
||||
}
|
||||
for ; i < end; i++ {
|
||||
h ^= uint64(b[i]) * prime5
|
||||
h = rol11(h) * prime1
|
||||
}
|
||||
|
||||
h ^= h >> 33
|
||||
h *= prime2
|
||||
h ^= h >> 29
|
||||
h *= prime3
|
||||
h ^= h >> 32
|
||||
|
||||
return h
|
||||
}
|
||||
|
||||
func writeBlocks(d *Digest, b []byte) int {
|
||||
v1, v2, v3, v4 := d.v1, d.v2, d.v3, d.v4
|
||||
n := len(b)
|
||||
for len(b) >= 32 {
|
||||
v1 = round(v1, u64(b[0:8:len(b)]))
|
||||
v2 = round(v2, u64(b[8:16:len(b)]))
|
||||
v3 = round(v3, u64(b[16:24:len(b)]))
|
||||
v4 = round(v4, u64(b[24:32:len(b)]))
|
||||
b = b[32:len(b):len(b)]
|
||||
}
|
||||
d.v1, d.v2, d.v3, d.v4 = v1, v2, v3, v4
|
||||
return n - len(b)
|
||||
}
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
// +build appengine
|
||||
|
||||
// This file contains the safe implementations of otherwise unsafe-using code.
|
||||
|
||||
package xxhash
|
||||
|
||||
// Sum64String computes the 64-bit xxHash digest of s.
|
||||
func Sum64String(s string) uint64 {
|
||||
return Sum64([]byte(s))
|
||||
}
|
||||
|
||||
// WriteString adds more data to d. It always returns len(s), nil.
|
||||
func (d *Digest) WriteString(s string) (n int, err error) {
|
||||
return d.Write([]byte(s))
|
||||
}
|
||||
|
|
@ -0,0 +1,46 @@
|
|||
// +build !appengine
|
||||
|
||||
// This file encapsulates usage of unsafe.
|
||||
// xxhash_safe.go contains the safe implementations.
|
||||
|
||||
package xxhash
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// Notes:
|
||||
//
|
||||
// See https://groups.google.com/d/msg/golang-nuts/dcjzJy-bSpw/tcZYBzQqAQAJ
|
||||
// for some discussion about these unsafe conversions.
|
||||
//
|
||||
// In the future it's possible that compiler optimizations will make these
|
||||
// unsafe operations unnecessary: https://golang.org/issue/2205.
|
||||
//
|
||||
// Both of these wrapper functions still incur function call overhead since they
|
||||
// will not be inlined. We could write Go/asm copies of Sum64 and Digest.Write
|
||||
// for strings to squeeze out a bit more speed. Mid-stack inlining should
|
||||
// eventually fix this.
|
||||
|
||||
// Sum64String computes the 64-bit xxHash digest of s.
|
||||
// It may be faster than Sum64([]byte(s)) by avoiding a copy.
|
||||
func Sum64String(s string) uint64 {
|
||||
var b []byte
|
||||
bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
|
||||
bh.Data = (*reflect.StringHeader)(unsafe.Pointer(&s)).Data
|
||||
bh.Len = len(s)
|
||||
bh.Cap = len(s)
|
||||
return Sum64(b)
|
||||
}
|
||||
|
||||
// WriteString adds more data to d. It always returns len(s), nil.
|
||||
// It may be faster than Write([]byte(s)) by avoiding a copy.
|
||||
func (d *Digest) WriteString(s string) (n int, err error) {
|
||||
var b []byte
|
||||
bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
|
||||
bh.Data = (*reflect.StringHeader)(unsafe.Pointer(&s)).Data
|
||||
bh.Len = len(s)
|
||||
bh.Cap = len(s)
|
||||
return d.Write(b)
|
||||
}
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
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|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
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|
||||
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|
||||
|
||||
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|
||||
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|
||||
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|
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|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
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||||
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|
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|
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You may add Your own copyright statement to Your modifications and
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|
||||
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|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
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|
||||
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Notwithstanding the above, nothing herein shall supersede or modify
|
||||
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|
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||||
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
|
@ -0,0 +1,36 @@
|
|||
# A more minimal logging API for Go
|
||||
|
||||
Before you consider this package, please read [this blog post by the inimitable
|
||||
Dave Cheney](http://dave.cheney.net/2015/11/05/lets-talk-about-logging). I
|
||||
really appreciate what he has to say, and it largely aligns with my own
|
||||
experiences. Too many choices of levels means inconsistent logs.
|
||||
|
||||
This package offers a purely abstract interface, based on these ideas but with
|
||||
a few twists. Code can depend on just this interface and have the actual
|
||||
logging implementation be injected from callers. Ideally only `main()` knows
|
||||
what logging implementation is being used.
|
||||
|
||||
# Differences from Dave's ideas
|
||||
|
||||
The main differences are:
|
||||
|
||||
1) Dave basically proposes doing away with the notion of a logging API in favor
|
||||
of `fmt.Printf()`. I disagree, especially when you consider things like output
|
||||
locations, timestamps, file and line decorations, and structured logging. I
|
||||
restrict the API to just 2 types of logs: info and error.
|
||||
|
||||
Info logs are things you want to tell the user which are not errors. Error
|
||||
logs are, well, errors. If your code receives an `error` from a subordinate
|
||||
function call and is logging that `error` *and not returning it*, use error
|
||||
logs.
|
||||
|
||||
2) Verbosity-levels on info logs. This gives developers a chance to indicate
|
||||
arbitrary grades of importance for info logs, without assigning names with
|
||||
semantic meaning such as "warning", "trace", and "debug". Superficially this
|
||||
may feel very similar, but the primary difference is the lack of semantics.
|
||||
Because verbosity is a numerical value, it's safe to assume that an app running
|
||||
with higher verbosity means more (and less important) logs will be generated.
|
||||
|
||||
This is a BETA grade API. I have implemented it for
|
||||
[glog](https://godoc.org/github.com/golang/glog). Until there is a significant
|
||||
2nd implementation, I don't really know how it will change.
|
||||
|
|
@ -0,0 +1,151 @@
|
|||
// Package logr defines abstract interfaces for logging. Packages can depend on
|
||||
// these interfaces and callers can implement logging in whatever way is
|
||||
// appropriate.
|
||||
//
|
||||
// This design derives from Dave Cheney's blog:
|
||||
// http://dave.cheney.net/2015/11/05/lets-talk-about-logging
|
||||
//
|
||||
// This is a BETA grade API. Until there is a significant 2nd implementation,
|
||||
// I don't really know how it will change.
|
||||
//
|
||||
// The logging specifically makes it non-trivial to use format strings, to encourage
|
||||
// attaching structured information instead of unstructured format strings.
|
||||
//
|
||||
// Usage
|
||||
//
|
||||
// Logging is done using a Logger. Loggers can have name prefixes and named values
|
||||
// attached, so that all log messages logged with that Logger have some base context
|
||||
// associated.
|
||||
//
|
||||
// The term "key" is used to refer to the name associated with a particular value, to
|
||||
// disambiguate it from the general Logger name.
|
||||
//
|
||||
// For instance, suppose we're trying to reconcile the state of an object, and we want
|
||||
// to log that we've made some decision.
|
||||
//
|
||||
// With the traditional log package, we might write
|
||||
// log.Printf(
|
||||
// "decided to set field foo to value %q for object %s/%s",
|
||||
// targetValue, object.Namespace, object.Name)
|
||||
//
|
||||
// With logr's structured logging, we'd write
|
||||
// // elsewhere in the file, set up the logger to log with the prefix of "reconcilers",
|
||||
// // and the named value target-type=Foo, for extra context.
|
||||
// log := mainLogger.WithName("reconcilers").WithValues("target-type", "Foo")
|
||||
//
|
||||
// // later on...
|
||||
// log.Info("setting field foo on object", "value", targetValue, "object", object)
|
||||
//
|
||||
// Depending on our logging implementation, we could then make logging decisions based on field values
|
||||
// (like only logging such events for objects in a certain namespace), or copy the structured
|
||||
// information into a structured log store.
|
||||
//
|
||||
// For logging errors, Logger has a method called Error. Suppose we wanted to log an
|
||||
// error while reconciling. With the traditional log package, we might write
|
||||
// log.Errorf("unable to reconcile object %s/%s: %v", object.Namespace, object.Name, err)
|
||||
//
|
||||
// With logr, we'd instead write
|
||||
// // assuming the above setup for log
|
||||
// log.Error(err, "unable to reconcile object", "object", object)
|
||||
//
|
||||
// This functions similarly to:
|
||||
// log.Info("unable to reconcile object", "error", err, "object", object)
|
||||
//
|
||||
// However, it ensures that a standard key for the error value ("error") is used across all
|
||||
// error logging. Furthermore, certain implementations may choose to attach additional
|
||||
// information (such as stack traces) on calls to Error, so it's preferred to use Error
|
||||
// to log errors.
|
||||
//
|
||||
// Parts of a log line
|
||||
//
|
||||
// Each log message from a Logger has four types of context:
|
||||
// logger name, log verbosity, log message, and the named values.
|
||||
//
|
||||
// The Logger name constists of a series of name "segments" added by successive calls to WithName.
|
||||
// These name segments will be joined in some way by the underlying implementation. It is strongly
|
||||
// reccomended that name segements contain simple identifiers (letters, digits, and hyphen), and do
|
||||
// not contain characters that could muddle the log output or confuse the joining operation (e.g.
|
||||
// whitespace, commas, periods, slashes, brackets, quotes, etc).
|
||||
//
|
||||
// Log verbosity represents how little a log matters. Level zero, the default, matters most.
|
||||
// Increasing levels matter less and less. Try to avoid lots of different verbosity levels,
|
||||
// and instead provide useful keys, logger names, and log messages for users to filter on.
|
||||
// It's illegal to pass a log level below zero.
|
||||
//
|
||||
// The log message consists of a constant message attached to the the log line. This
|
||||
// should generally be a simple description of what's occuring, and should never be a format string.
|
||||
//
|
||||
// Variable information can then be attached using named values (key/value pairs). Keys are arbitrary
|
||||
// strings, while values may be any Go value.
|
||||
//
|
||||
// Key Naming Conventions
|
||||
//
|
||||
// While users are generally free to use key names of their choice, it's generally best to avoid
|
||||
// using the following keys, as they're frequently used by implementations:
|
||||
//
|
||||
// - `"error"`: the underlying error value in the `Error` method.
|
||||
// - `"stacktrace"`: the stack trace associated with a particular log line or error
|
||||
// (often from the `Error` message).
|
||||
// - `"caller"`: the calling information (file/line) of a particular log line.
|
||||
// - `"msg"`: the log message.
|
||||
// - `"level"`: the log level.
|
||||
// - `"ts"`: the timestamp for a log line.
|
||||
//
|
||||
// Implementations are encouraged to make use of these keys to represent the above
|
||||
// concepts, when neccessary (for example, in a pure-JSON output form, it would be
|
||||
// necessary to represent at least message and timestamp as ordinary named values).
|
||||
package logr
|
||||
|
||||
// TODO: consider adding back in format strings if they're really needed
|
||||
// TODO: consider other bits of zap/zapcore functionality like ObjectMarshaller (for arbitrary objects)
|
||||
// TODO: consider other bits of glog functionality like Flush, InfoDepth, OutputStats
|
||||
|
||||
// InfoLogger represents the ability to log non-error messages, at a particular verbosity.
|
||||
type InfoLogger interface {
|
||||
// Info logs a non-error message with the given key/value pairs as context.
|
||||
//
|
||||
// The msg argument should be used to add some constant description to
|
||||
// the log line. The key/value pairs can then be used to add additional
|
||||
// variable information. The key/value pairs should alternate string
|
||||
// keys and arbitrary values.
|
||||
Info(msg string, keysAndValues ...interface{})
|
||||
|
||||
// Enabled tests whether this InfoLogger is enabled. For example,
|
||||
// commandline flags might be used to set the logging verbosity and disable
|
||||
// some info logs.
|
||||
Enabled() bool
|
||||
}
|
||||
|
||||
// Logger represents the ability to log messages, both errors and not.
|
||||
type Logger interface {
|
||||
// All Loggers implement InfoLogger. Calling InfoLogger methods directly on
|
||||
// a Logger value is equivalent to calling them on a V(0) InfoLogger. For
|
||||
// example, logger.Info() produces the same result as logger.V(0).Info.
|
||||
InfoLogger
|
||||
|
||||
// Error logs an error, with the given message and key/value pairs as context.
|
||||
// It functions similarly to calling Info with the "error" named value, but may
|
||||
// have unique behavior, and should be preferred for logging errors (see the
|
||||
// package documentations for more information).
|
||||
//
|
||||
// The msg field should be used to add context to any underlying error,
|
||||
// while the err field should be used to attach the actual error that
|
||||
// triggered this log line, if present.
|
||||
Error(err error, msg string, keysAndValues ...interface{})
|
||||
|
||||
// V returns an InfoLogger value for a specific verbosity level. A higher
|
||||
// verbosity level means a log message is less important. It's illegal to
|
||||
// pass a log level less than zero.
|
||||
V(level int) InfoLogger
|
||||
|
||||
// WithValues adds some key-value pairs of context to a logger.
|
||||
// See Info for documentation on how key/value pairs work.
|
||||
WithValues(keysAndValues ...interface{}) Logger
|
||||
|
||||
// WithName adds a new element to the logger's name.
|
||||
// Successive calls with WithName continue to append
|
||||
// suffixes to the logger's name. It's strongly reccomended
|
||||
// that name segments contain only letters, digits, and hyphens
|
||||
// (see the package documentation for more information).
|
||||
WithName(name string) Logger
|
||||
}
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
*~
|
||||
*.swp
|
||||
/vendor
|
||||
|
|
@ -0,0 +1,52 @@
|
|||
# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
|
||||
|
||||
|
||||
[[projects]]
|
||||
digest = "1:edd2fa4578eb086265db78a9201d15e76b298dfd0d5c379da83e9c61712cf6df"
|
||||
name = "github.com/go-logr/logr"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "9fb12b3b21c5415d16ac18dc5cd42c1cfdd40c4e"
|
||||
version = "v0.1.0"
|
||||
|
||||
[[projects]]
|
||||
digest = "1:3c1a69cdae3501bf75e76d0d86dc6f2b0a7421bc205c0cb7b96b19eed464a34d"
|
||||
name = "go.uber.org/atomic"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "1ea20fb1cbb1cc08cbd0d913a96dead89aa18289"
|
||||
version = "v1.3.2"
|
||||
|
||||
[[projects]]
|
||||
digest = "1:60bf2a5e347af463c42ed31a493d817f8a72f102543060ed992754e689805d1a"
|
||||
name = "go.uber.org/multierr"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "3c4937480c32f4c13a875a1829af76c98ca3d40a"
|
||||
version = "v1.1.0"
|
||||
|
||||
[[projects]]
|
||||
digest = "1:9580b1b079114140ade8cec957685344d14f00119e0241f6b369633cb346eeb3"
|
||||
name = "go.uber.org/zap"
|
||||
packages = [
|
||||
".",
|
||||
"buffer",
|
||||
"internal/bufferpool",
|
||||
"internal/color",
|
||||
"internal/exit",
|
||||
"zapcore",
|
||||
]
|
||||
pruneopts = "UT"
|
||||
revision = "eeedf312bc6c57391d84767a4cd413f02a917974"
|
||||
version = "v1.8.0"
|
||||
|
||||
[solve-meta]
|
||||
analyzer-name = "dep"
|
||||
analyzer-version = 1
|
||||
input-imports = [
|
||||
"github.com/go-logr/logr",
|
||||
"go.uber.org/zap",
|
||||
"go.uber.org/zap/zapcore",
|
||||
]
|
||||
solver-name = "gps-cdcl"
|
||||
solver-version = 1
|
||||
|
|
@ -0,0 +1,38 @@
|
|||
# Gopkg.toml example
|
||||
#
|
||||
# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
|
||||
# for detailed Gopkg.toml documentation.
|
||||
#
|
||||
# required = ["github.com/user/thing/cmd/thing"]
|
||||
# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
|
||||
#
|
||||
# [[constraint]]
|
||||
# name = "github.com/user/project"
|
||||
# version = "1.0.0"
|
||||
#
|
||||
# [[constraint]]
|
||||
# name = "github.com/user/project2"
|
||||
# branch = "dev"
|
||||
# source = "github.com/myfork/project2"
|
||||
#
|
||||
# [[override]]
|
||||
# name = "github.com/x/y"
|
||||
# version = "2.4.0"
|
||||
#
|
||||
# [prune]
|
||||
# non-go = false
|
||||
# go-tests = true
|
||||
# unused-packages = true
|
||||
|
||||
|
||||
[[constraint]]
|
||||
name = "github.com/go-logr/logr"
|
||||
version = "0.1.0"
|
||||
|
||||
[[constraint]]
|
||||
name = "go.uber.org/zap"
|
||||
version = "1.8.0"
|
||||
|
||||
[prune]
|
||||
go-tests = true
|
||||
unused-packages = true
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
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|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
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|
||||
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|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
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|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
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|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
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|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
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|
||||
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|
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|
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||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
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|
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worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
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|
||||
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|
||||
where such license applies only to those patent claims licensable
|
||||
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|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
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|
||||
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|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "{}"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright {yyyy} {name of copyright owner}
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
Zapr :zap:
|
||||
==========
|
||||
|
||||
A [logr](https://github.com/go-logr/logr) implementation using
|
||||
[Zap](go.uber.org/zap).
|
||||
|
||||
Usage
|
||||
-----
|
||||
|
||||
```go
|
||||
import (
|
||||
"fmt"
|
||||
|
||||
"go.uber.org/zap"
|
||||
"github.com/go-logr/logr"
|
||||
"github.com/directxman12/zapr"
|
||||
)
|
||||
|
||||
func main() {
|
||||
var log logr.Logger
|
||||
|
||||
zapLog, err := zap.NewDevelopment()
|
||||
if err != nil {
|
||||
panic(fmt.Sprintf("who watches the watchmen (%v)?", err))
|
||||
}
|
||||
log = zapr.NewLogger(zapLog)
|
||||
|
||||
log.Info("Logr in action!", "the answer", 42)
|
||||
}
|
||||
```
|
||||
|
||||
Implementation Details
|
||||
----------------------
|
||||
|
||||
For the most part, concepts in Zap correspond directly with those in logr.
|
||||
|
||||
Unlike Zap, all fields *must* be in the form of suggared fields --
|
||||
it's illegal to pass a strongly-typed Zap field in a key position to any
|
||||
of the logging methods (`Log`, `Error`).
|
||||
|
||||
Levels in logr correspond to custom debug levels in Zap. Any given level
|
||||
in logr is represents by its inverse in Zap (`zapLevel = -1*logrLevel`).
|
||||
|
||||
For example `V(2)` is equivalent to log level -2 in Zap, while `V(1)` is
|
||||
equivalent to Zap's `DebugLevel`.
|
||||
|
|
@ -0,0 +1,163 @@
|
|||
// Copyright 2018 Solly Ross
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// package zapr defines an implementation of the github.com/go-logr/logr
|
||||
// interfaces built on top of Zap (go.uber.org/zap).
|
||||
//
|
||||
// Usage
|
||||
//
|
||||
// A new logr.Logger can be constructed from an existing zap.Logger using
|
||||
// the NewLogger function:
|
||||
//
|
||||
// log := zapr.NewLogger(someZapLogger)
|
||||
//
|
||||
// Implementation Details
|
||||
//
|
||||
// For the most part, concepts in Zap correspond directly with those in
|
||||
// logr.
|
||||
//
|
||||
// Unlike Zap, all fields *must* be in the form of suggared fields --
|
||||
// it's illegal to pass a strongly-typed Zap field in a key position
|
||||
// to any of the log methods.
|
||||
//
|
||||
// Levels in logr correspond to custom debug levels in Zap. Any given level
|
||||
// in logr is represents by its inverse in zap (`zapLevel = -1*logrLevel`).
|
||||
// For example V(2) is equivalent to log level -2 in Zap, while V(1) is
|
||||
// equivalent to Zap's DebugLevel.
|
||||
package zapr
|
||||
|
||||
import (
|
||||
"github.com/go-logr/logr"
|
||||
"go.uber.org/zap"
|
||||
"go.uber.org/zap/zapcore"
|
||||
)
|
||||
|
||||
// noopInfoLogger is a logr.InfoLogger that's always disabled, and does nothing.
|
||||
type noopInfoLogger struct{}
|
||||
|
||||
func (l *noopInfoLogger) Enabled() bool { return false }
|
||||
func (l *noopInfoLogger) Info(_ string, _ ...interface{}) {}
|
||||
|
||||
var disabledInfoLogger = &noopInfoLogger{}
|
||||
|
||||
// NB: right now, we always use the equivalent of sugared logging.
|
||||
// This is necessary, since logr doesn't define non-suggared types,
|
||||
// and using zap-specific non-suggared types would make uses tied
|
||||
// directly to Zap.
|
||||
|
||||
// infoLogger is a logr.InfoLogger that uses Zap to log at a particular
|
||||
// level. The level has already been converted to a Zap level, which
|
||||
// is to say that `logrLevel = -1*zapLevel`.
|
||||
type infoLogger struct {
|
||||
lvl zapcore.Level
|
||||
l *zap.Logger
|
||||
}
|
||||
|
||||
func (l *infoLogger) Enabled() bool { return true }
|
||||
func (l *infoLogger) Info(msg string, keysAndVals ...interface{}) {
|
||||
if checkedEntry := l.l.Check(l.lvl, msg); checkedEntry != nil {
|
||||
checkedEntry.Write(handleFields(l.l, keysAndVals)...)
|
||||
}
|
||||
}
|
||||
|
||||
// zapLogger is a logr.Logger that uses Zap to log.
|
||||
type zapLogger struct {
|
||||
// NB: this looks very similar to zap.SugaredLogger, but
|
||||
// deals with our desire to have multiple verbosity levels.
|
||||
l *zap.Logger
|
||||
infoLogger
|
||||
}
|
||||
|
||||
// handleFields converts a bunch of arbitrary key-value pairs into Zap fields. It takes
|
||||
// additional pre-converted Zap fields, for use with automatically attached fields, like
|
||||
// `error`.
|
||||
func handleFields(l *zap.Logger, args []interface{}, additional ...zap.Field) []zap.Field {
|
||||
// a slightly modified version of zap.SugaredLogger.sweetenFields
|
||||
if len(args) == 0 {
|
||||
// fast-return if we have no suggared fields.
|
||||
return additional
|
||||
}
|
||||
|
||||
// unlike Zap, we can be pretty sure users aren't passing structured
|
||||
// fields (since logr has no concept of that), so guess that we need a
|
||||
// little less space.
|
||||
fields := make([]zap.Field, 0, len(args)/2+len(additional))
|
||||
for i := 0; i < len(args); {
|
||||
// check just in case for strongly-typed Zap fields, which is illegal (since
|
||||
// it breaks implementation agnosticism), so we can give a better error message.
|
||||
if _, ok := args[i].(zap.Field); ok {
|
||||
l.DPanic("strongly-typed Zap Field passed to logr", zap.Any("zap field", args[i]))
|
||||
break
|
||||
}
|
||||
|
||||
// make sure this isn't a mismatched key
|
||||
if i == len(args)-1 {
|
||||
l.DPanic("odd number of arguments passed as key-value pairs for logging", zap.Any("ignored key", args[i]))
|
||||
break
|
||||
}
|
||||
|
||||
// process a key-value pair,
|
||||
// ensuring that the key is a string
|
||||
key, val := args[i], args[i+1]
|
||||
keyStr, isString := key.(string)
|
||||
if !isString {
|
||||
// if the key isn't a string, DPanic and stop logging
|
||||
l.DPanic("non-string key argument passed to logging, ignoring all later arguments", zap.Any("invalid key", key))
|
||||
break
|
||||
}
|
||||
|
||||
fields = append(fields, zap.Any(keyStr, val))
|
||||
i += 2
|
||||
}
|
||||
|
||||
return append(fields, additional...)
|
||||
}
|
||||
|
||||
func (l *zapLogger) Error(err error, msg string, keysAndVals ...interface{}) {
|
||||
if checkedEntry := l.l.Check(zap.ErrorLevel, msg); checkedEntry != nil {
|
||||
checkedEntry.Write(handleFields(l.l, keysAndVals, zap.Error(err))...)
|
||||
}
|
||||
}
|
||||
|
||||
func (l *zapLogger) V(level int) logr.InfoLogger {
|
||||
lvl := zapcore.Level(-1 * level)
|
||||
if l.l.Core().Enabled(lvl) {
|
||||
return &infoLogger{
|
||||
lvl: lvl,
|
||||
l: l.l,
|
||||
}
|
||||
}
|
||||
return disabledInfoLogger
|
||||
}
|
||||
|
||||
func (l *zapLogger) WithValues(keysAndValues ...interface{}) logr.Logger {
|
||||
newLogger := l.l.With(handleFields(l.l, keysAndValues)...)
|
||||
return NewLogger(newLogger)
|
||||
}
|
||||
|
||||
func (l *zapLogger) WithName(name string) logr.Logger {
|
||||
newLogger := l.l.Named(name)
|
||||
return NewLogger(newLogger)
|
||||
}
|
||||
|
||||
// NewLogger creates a new logr.Logger using the given Zap Logger to log.
|
||||
func NewLogger(l *zap.Logger) logr.Logger {
|
||||
return &zapLogger{
|
||||
l: l,
|
||||
infoLogger: infoLogger{
|
||||
l: l,
|
||||
lvl: zap.InfoLevel,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
# This source code refers to The Go Authors for copyright purposes.
|
||||
# The master list of authors is in the main Go distribution,
|
||||
# visible at http://tip.golang.org/AUTHORS.
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
# This source code was written by the Go contributors.
|
||||
# The master list of contributors is in the main Go distribution,
|
||||
# visible at http://tip.golang.org/CONTRIBUTORS.
|
||||
|
|
@ -0,0 +1,28 @@
|
|||
Copyright 2010 The Go Authors. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following disclaimer
|
||||
in the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Google Inc. nor the names of its
|
||||
contributors may be used to endorse or promote products derived from
|
||||
this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
|
|
@ -0,0 +1,253 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
// Protocol buffer deep copy and merge.
|
||||
// TODO: RawMessage.
|
||||
|
||||
package proto
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"reflect"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Clone returns a deep copy of a protocol buffer.
|
||||
func Clone(src Message) Message {
|
||||
in := reflect.ValueOf(src)
|
||||
if in.IsNil() {
|
||||
return src
|
||||
}
|
||||
out := reflect.New(in.Type().Elem())
|
||||
dst := out.Interface().(Message)
|
||||
Merge(dst, src)
|
||||
return dst
|
||||
}
|
||||
|
||||
// Merger is the interface representing objects that can merge messages of the same type.
|
||||
type Merger interface {
|
||||
// Merge merges src into this message.
|
||||
// Required and optional fields that are set in src will be set to that value in dst.
|
||||
// Elements of repeated fields will be appended.
|
||||
//
|
||||
// Merge may panic if called with a different argument type than the receiver.
|
||||
Merge(src Message)
|
||||
}
|
||||
|
||||
// generatedMerger is the custom merge method that generated protos will have.
|
||||
// We must add this method since a generate Merge method will conflict with
|
||||
// many existing protos that have a Merge data field already defined.
|
||||
type generatedMerger interface {
|
||||
XXX_Merge(src Message)
|
||||
}
|
||||
|
||||
// Merge merges src into dst.
|
||||
// Required and optional fields that are set in src will be set to that value in dst.
|
||||
// Elements of repeated fields will be appended.
|
||||
// Merge panics if src and dst are not the same type, or if dst is nil.
|
||||
func Merge(dst, src Message) {
|
||||
if m, ok := dst.(Merger); ok {
|
||||
m.Merge(src)
|
||||
return
|
||||
}
|
||||
|
||||
in := reflect.ValueOf(src)
|
||||
out := reflect.ValueOf(dst)
|
||||
if out.IsNil() {
|
||||
panic("proto: nil destination")
|
||||
}
|
||||
if in.Type() != out.Type() {
|
||||
panic(fmt.Sprintf("proto.Merge(%T, %T) type mismatch", dst, src))
|
||||
}
|
||||
if in.IsNil() {
|
||||
return // Merge from nil src is a noop
|
||||
}
|
||||
if m, ok := dst.(generatedMerger); ok {
|
||||
m.XXX_Merge(src)
|
||||
return
|
||||
}
|
||||
mergeStruct(out.Elem(), in.Elem())
|
||||
}
|
||||
|
||||
func mergeStruct(out, in reflect.Value) {
|
||||
sprop := GetProperties(in.Type())
|
||||
for i := 0; i < in.NumField(); i++ {
|
||||
f := in.Type().Field(i)
|
||||
if strings.HasPrefix(f.Name, "XXX_") {
|
||||
continue
|
||||
}
|
||||
mergeAny(out.Field(i), in.Field(i), false, sprop.Prop[i])
|
||||
}
|
||||
|
||||
if emIn, err := extendable(in.Addr().Interface()); err == nil {
|
||||
emOut, _ := extendable(out.Addr().Interface())
|
||||
mIn, muIn := emIn.extensionsRead()
|
||||
if mIn != nil {
|
||||
mOut := emOut.extensionsWrite()
|
||||
muIn.Lock()
|
||||
mergeExtension(mOut, mIn)
|
||||
muIn.Unlock()
|
||||
}
|
||||
}
|
||||
|
||||
uf := in.FieldByName("XXX_unrecognized")
|
||||
if !uf.IsValid() {
|
||||
return
|
||||
}
|
||||
uin := uf.Bytes()
|
||||
if len(uin) > 0 {
|
||||
out.FieldByName("XXX_unrecognized").SetBytes(append([]byte(nil), uin...))
|
||||
}
|
||||
}
|
||||
|
||||
// mergeAny performs a merge between two values of the same type.
|
||||
// viaPtr indicates whether the values were indirected through a pointer (implying proto2).
|
||||
// prop is set if this is a struct field (it may be nil).
|
||||
func mergeAny(out, in reflect.Value, viaPtr bool, prop *Properties) {
|
||||
if in.Type() == protoMessageType {
|
||||
if !in.IsNil() {
|
||||
if out.IsNil() {
|
||||
out.Set(reflect.ValueOf(Clone(in.Interface().(Message))))
|
||||
} else {
|
||||
Merge(out.Interface().(Message), in.Interface().(Message))
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
switch in.Kind() {
|
||||
case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
|
||||
reflect.String, reflect.Uint32, reflect.Uint64:
|
||||
if !viaPtr && isProto3Zero(in) {
|
||||
return
|
||||
}
|
||||
out.Set(in)
|
||||
case reflect.Interface:
|
||||
// Probably a oneof field; copy non-nil values.
|
||||
if in.IsNil() {
|
||||
return
|
||||
}
|
||||
// Allocate destination if it is not set, or set to a different type.
|
||||
// Otherwise we will merge as normal.
|
||||
if out.IsNil() || out.Elem().Type() != in.Elem().Type() {
|
||||
out.Set(reflect.New(in.Elem().Elem().Type())) // interface -> *T -> T -> new(T)
|
||||
}
|
||||
mergeAny(out.Elem(), in.Elem(), false, nil)
|
||||
case reflect.Map:
|
||||
if in.Len() == 0 {
|
||||
return
|
||||
}
|
||||
if out.IsNil() {
|
||||
out.Set(reflect.MakeMap(in.Type()))
|
||||
}
|
||||
// For maps with value types of *T or []byte we need to deep copy each value.
|
||||
elemKind := in.Type().Elem().Kind()
|
||||
for _, key := range in.MapKeys() {
|
||||
var val reflect.Value
|
||||
switch elemKind {
|
||||
case reflect.Ptr:
|
||||
val = reflect.New(in.Type().Elem().Elem())
|
||||
mergeAny(val, in.MapIndex(key), false, nil)
|
||||
case reflect.Slice:
|
||||
val = in.MapIndex(key)
|
||||
val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
|
||||
default:
|
||||
val = in.MapIndex(key)
|
||||
}
|
||||
out.SetMapIndex(key, val)
|
||||
}
|
||||
case reflect.Ptr:
|
||||
if in.IsNil() {
|
||||
return
|
||||
}
|
||||
if out.IsNil() {
|
||||
out.Set(reflect.New(in.Elem().Type()))
|
||||
}
|
||||
mergeAny(out.Elem(), in.Elem(), true, nil)
|
||||
case reflect.Slice:
|
||||
if in.IsNil() {
|
||||
return
|
||||
}
|
||||
if in.Type().Elem().Kind() == reflect.Uint8 {
|
||||
// []byte is a scalar bytes field, not a repeated field.
|
||||
|
||||
// Edge case: if this is in a proto3 message, a zero length
|
||||
// bytes field is considered the zero value, and should not
|
||||
// be merged.
|
||||
if prop != nil && prop.proto3 && in.Len() == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
// Make a deep copy.
|
||||
// Append to []byte{} instead of []byte(nil) so that we never end up
|
||||
// with a nil result.
|
||||
out.SetBytes(append([]byte{}, in.Bytes()...))
|
||||
return
|
||||
}
|
||||
n := in.Len()
|
||||
if out.IsNil() {
|
||||
out.Set(reflect.MakeSlice(in.Type(), 0, n))
|
||||
}
|
||||
switch in.Type().Elem().Kind() {
|
||||
case reflect.Bool, reflect.Float32, reflect.Float64, reflect.Int32, reflect.Int64,
|
||||
reflect.String, reflect.Uint32, reflect.Uint64:
|
||||
out.Set(reflect.AppendSlice(out, in))
|
||||
default:
|
||||
for i := 0; i < n; i++ {
|
||||
x := reflect.Indirect(reflect.New(in.Type().Elem()))
|
||||
mergeAny(x, in.Index(i), false, nil)
|
||||
out.Set(reflect.Append(out, x))
|
||||
}
|
||||
}
|
||||
case reflect.Struct:
|
||||
mergeStruct(out, in)
|
||||
default:
|
||||
// unknown type, so not a protocol buffer
|
||||
log.Printf("proto: don't know how to copy %v", in)
|
||||
}
|
||||
}
|
||||
|
||||
func mergeExtension(out, in map[int32]Extension) {
|
||||
for extNum, eIn := range in {
|
||||
eOut := Extension{desc: eIn.desc}
|
||||
if eIn.value != nil {
|
||||
v := reflect.New(reflect.TypeOf(eIn.value)).Elem()
|
||||
mergeAny(v, reflect.ValueOf(eIn.value), false, nil)
|
||||
eOut.value = v.Interface()
|
||||
}
|
||||
if eIn.enc != nil {
|
||||
eOut.enc = make([]byte, len(eIn.enc))
|
||||
copy(eOut.enc, eIn.enc)
|
||||
}
|
||||
|
||||
out[extNum] = eOut
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,427 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
/*
|
||||
* Routines for decoding protocol buffer data to construct in-memory representations.
|
||||
*/
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
)
|
||||
|
||||
// errOverflow is returned when an integer is too large to be represented.
|
||||
var errOverflow = errors.New("proto: integer overflow")
|
||||
|
||||
// ErrInternalBadWireType is returned by generated code when an incorrect
|
||||
// wire type is encountered. It does not get returned to user code.
|
||||
var ErrInternalBadWireType = errors.New("proto: internal error: bad wiretype for oneof")
|
||||
|
||||
// DecodeVarint reads a varint-encoded integer from the slice.
|
||||
// It returns the integer and the number of bytes consumed, or
|
||||
// zero if there is not enough.
|
||||
// This is the format for the
|
||||
// int32, int64, uint32, uint64, bool, and enum
|
||||
// protocol buffer types.
|
||||
func DecodeVarint(buf []byte) (x uint64, n int) {
|
||||
for shift := uint(0); shift < 64; shift += 7 {
|
||||
if n >= len(buf) {
|
||||
return 0, 0
|
||||
}
|
||||
b := uint64(buf[n])
|
||||
n++
|
||||
x |= (b & 0x7F) << shift
|
||||
if (b & 0x80) == 0 {
|
||||
return x, n
|
||||
}
|
||||
}
|
||||
|
||||
// The number is too large to represent in a 64-bit value.
|
||||
return 0, 0
|
||||
}
|
||||
|
||||
func (p *Buffer) decodeVarintSlow() (x uint64, err error) {
|
||||
i := p.index
|
||||
l := len(p.buf)
|
||||
|
||||
for shift := uint(0); shift < 64; shift += 7 {
|
||||
if i >= l {
|
||||
err = io.ErrUnexpectedEOF
|
||||
return
|
||||
}
|
||||
b := p.buf[i]
|
||||
i++
|
||||
x |= (uint64(b) & 0x7F) << shift
|
||||
if b < 0x80 {
|
||||
p.index = i
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
// The number is too large to represent in a 64-bit value.
|
||||
err = errOverflow
|
||||
return
|
||||
}
|
||||
|
||||
// DecodeVarint reads a varint-encoded integer from the Buffer.
|
||||
// This is the format for the
|
||||
// int32, int64, uint32, uint64, bool, and enum
|
||||
// protocol buffer types.
|
||||
func (p *Buffer) DecodeVarint() (x uint64, err error) {
|
||||
i := p.index
|
||||
buf := p.buf
|
||||
|
||||
if i >= len(buf) {
|
||||
return 0, io.ErrUnexpectedEOF
|
||||
} else if buf[i] < 0x80 {
|
||||
p.index++
|
||||
return uint64(buf[i]), nil
|
||||
} else if len(buf)-i < 10 {
|
||||
return p.decodeVarintSlow()
|
||||
}
|
||||
|
||||
var b uint64
|
||||
// we already checked the first byte
|
||||
x = uint64(buf[i]) - 0x80
|
||||
i++
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 7
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 7
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 14
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 14
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 21
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 21
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 28
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 28
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 35
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 35
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 42
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 42
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 49
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 49
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 56
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
x -= 0x80 << 56
|
||||
|
||||
b = uint64(buf[i])
|
||||
i++
|
||||
x += b << 63
|
||||
if b&0x80 == 0 {
|
||||
goto done
|
||||
}
|
||||
|
||||
return 0, errOverflow
|
||||
|
||||
done:
|
||||
p.index = i
|
||||
return x, nil
|
||||
}
|
||||
|
||||
// DecodeFixed64 reads a 64-bit integer from the Buffer.
|
||||
// This is the format for the
|
||||
// fixed64, sfixed64, and double protocol buffer types.
|
||||
func (p *Buffer) DecodeFixed64() (x uint64, err error) {
|
||||
// x, err already 0
|
||||
i := p.index + 8
|
||||
if i < 0 || i > len(p.buf) {
|
||||
err = io.ErrUnexpectedEOF
|
||||
return
|
||||
}
|
||||
p.index = i
|
||||
|
||||
x = uint64(p.buf[i-8])
|
||||
x |= uint64(p.buf[i-7]) << 8
|
||||
x |= uint64(p.buf[i-6]) << 16
|
||||
x |= uint64(p.buf[i-5]) << 24
|
||||
x |= uint64(p.buf[i-4]) << 32
|
||||
x |= uint64(p.buf[i-3]) << 40
|
||||
x |= uint64(p.buf[i-2]) << 48
|
||||
x |= uint64(p.buf[i-1]) << 56
|
||||
return
|
||||
}
|
||||
|
||||
// DecodeFixed32 reads a 32-bit integer from the Buffer.
|
||||
// This is the format for the
|
||||
// fixed32, sfixed32, and float protocol buffer types.
|
||||
func (p *Buffer) DecodeFixed32() (x uint64, err error) {
|
||||
// x, err already 0
|
||||
i := p.index + 4
|
||||
if i < 0 || i > len(p.buf) {
|
||||
err = io.ErrUnexpectedEOF
|
||||
return
|
||||
}
|
||||
p.index = i
|
||||
|
||||
x = uint64(p.buf[i-4])
|
||||
x |= uint64(p.buf[i-3]) << 8
|
||||
x |= uint64(p.buf[i-2]) << 16
|
||||
x |= uint64(p.buf[i-1]) << 24
|
||||
return
|
||||
}
|
||||
|
||||
// DecodeZigzag64 reads a zigzag-encoded 64-bit integer
|
||||
// from the Buffer.
|
||||
// This is the format used for the sint64 protocol buffer type.
|
||||
func (p *Buffer) DecodeZigzag64() (x uint64, err error) {
|
||||
x, err = p.DecodeVarint()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
x = (x >> 1) ^ uint64((int64(x&1)<<63)>>63)
|
||||
return
|
||||
}
|
||||
|
||||
// DecodeZigzag32 reads a zigzag-encoded 32-bit integer
|
||||
// from the Buffer.
|
||||
// This is the format used for the sint32 protocol buffer type.
|
||||
func (p *Buffer) DecodeZigzag32() (x uint64, err error) {
|
||||
x, err = p.DecodeVarint()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
x = uint64((uint32(x) >> 1) ^ uint32((int32(x&1)<<31)>>31))
|
||||
return
|
||||
}
|
||||
|
||||
// DecodeRawBytes reads a count-delimited byte buffer from the Buffer.
|
||||
// This is the format used for the bytes protocol buffer
|
||||
// type and for embedded messages.
|
||||
func (p *Buffer) DecodeRawBytes(alloc bool) (buf []byte, err error) {
|
||||
n, err := p.DecodeVarint()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
nb := int(n)
|
||||
if nb < 0 {
|
||||
return nil, fmt.Errorf("proto: bad byte length %d", nb)
|
||||
}
|
||||
end := p.index + nb
|
||||
if end < p.index || end > len(p.buf) {
|
||||
return nil, io.ErrUnexpectedEOF
|
||||
}
|
||||
|
||||
if !alloc {
|
||||
// todo: check if can get more uses of alloc=false
|
||||
buf = p.buf[p.index:end]
|
||||
p.index += nb
|
||||
return
|
||||
}
|
||||
|
||||
buf = make([]byte, nb)
|
||||
copy(buf, p.buf[p.index:])
|
||||
p.index += nb
|
||||
return
|
||||
}
|
||||
|
||||
// DecodeStringBytes reads an encoded string from the Buffer.
|
||||
// This is the format used for the proto2 string type.
|
||||
func (p *Buffer) DecodeStringBytes() (s string, err error) {
|
||||
buf, err := p.DecodeRawBytes(false)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
return string(buf), nil
|
||||
}
|
||||
|
||||
// Unmarshaler is the interface representing objects that can
|
||||
// unmarshal themselves. The argument points to data that may be
|
||||
// overwritten, so implementations should not keep references to the
|
||||
// buffer.
|
||||
// Unmarshal implementations should not clear the receiver.
|
||||
// Any unmarshaled data should be merged into the receiver.
|
||||
// Callers of Unmarshal that do not want to retain existing data
|
||||
// should Reset the receiver before calling Unmarshal.
|
||||
type Unmarshaler interface {
|
||||
Unmarshal([]byte) error
|
||||
}
|
||||
|
||||
// newUnmarshaler is the interface representing objects that can
|
||||
// unmarshal themselves. The semantics are identical to Unmarshaler.
|
||||
//
|
||||
// This exists to support protoc-gen-go generated messages.
|
||||
// The proto package will stop type-asserting to this interface in the future.
|
||||
//
|
||||
// DO NOT DEPEND ON THIS.
|
||||
type newUnmarshaler interface {
|
||||
XXX_Unmarshal([]byte) error
|
||||
}
|
||||
|
||||
// Unmarshal parses the protocol buffer representation in buf and places the
|
||||
// decoded result in pb. If the struct underlying pb does not match
|
||||
// the data in buf, the results can be unpredictable.
|
||||
//
|
||||
// Unmarshal resets pb before starting to unmarshal, so any
|
||||
// existing data in pb is always removed. Use UnmarshalMerge
|
||||
// to preserve and append to existing data.
|
||||
func Unmarshal(buf []byte, pb Message) error {
|
||||
pb.Reset()
|
||||
if u, ok := pb.(newUnmarshaler); ok {
|
||||
return u.XXX_Unmarshal(buf)
|
||||
}
|
||||
if u, ok := pb.(Unmarshaler); ok {
|
||||
return u.Unmarshal(buf)
|
||||
}
|
||||
return NewBuffer(buf).Unmarshal(pb)
|
||||
}
|
||||
|
||||
// UnmarshalMerge parses the protocol buffer representation in buf and
|
||||
// writes the decoded result to pb. If the struct underlying pb does not match
|
||||
// the data in buf, the results can be unpredictable.
|
||||
//
|
||||
// UnmarshalMerge merges into existing data in pb.
|
||||
// Most code should use Unmarshal instead.
|
||||
func UnmarshalMerge(buf []byte, pb Message) error {
|
||||
if u, ok := pb.(newUnmarshaler); ok {
|
||||
return u.XXX_Unmarshal(buf)
|
||||
}
|
||||
if u, ok := pb.(Unmarshaler); ok {
|
||||
// NOTE: The history of proto have unfortunately been inconsistent
|
||||
// whether Unmarshaler should or should not implicitly clear itself.
|
||||
// Some implementations do, most do not.
|
||||
// Thus, calling this here may or may not do what people want.
|
||||
//
|
||||
// See https://github.com/golang/protobuf/issues/424
|
||||
return u.Unmarshal(buf)
|
||||
}
|
||||
return NewBuffer(buf).Unmarshal(pb)
|
||||
}
|
||||
|
||||
// DecodeMessage reads a count-delimited message from the Buffer.
|
||||
func (p *Buffer) DecodeMessage(pb Message) error {
|
||||
enc, err := p.DecodeRawBytes(false)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
return NewBuffer(enc).Unmarshal(pb)
|
||||
}
|
||||
|
||||
// DecodeGroup reads a tag-delimited group from the Buffer.
|
||||
// StartGroup tag is already consumed. This function consumes
|
||||
// EndGroup tag.
|
||||
func (p *Buffer) DecodeGroup(pb Message) error {
|
||||
b := p.buf[p.index:]
|
||||
x, y := findEndGroup(b)
|
||||
if x < 0 {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
err := Unmarshal(b[:x], pb)
|
||||
p.index += y
|
||||
return err
|
||||
}
|
||||
|
||||
// Unmarshal parses the protocol buffer representation in the
|
||||
// Buffer and places the decoded result in pb. If the struct
|
||||
// underlying pb does not match the data in the buffer, the results can be
|
||||
// unpredictable.
|
||||
//
|
||||
// Unlike proto.Unmarshal, this does not reset pb before starting to unmarshal.
|
||||
func (p *Buffer) Unmarshal(pb Message) error {
|
||||
// If the object can unmarshal itself, let it.
|
||||
if u, ok := pb.(newUnmarshaler); ok {
|
||||
err := u.XXX_Unmarshal(p.buf[p.index:])
|
||||
p.index = len(p.buf)
|
||||
return err
|
||||
}
|
||||
if u, ok := pb.(Unmarshaler); ok {
|
||||
// NOTE: The history of proto have unfortunately been inconsistent
|
||||
// whether Unmarshaler should or should not implicitly clear itself.
|
||||
// Some implementations do, most do not.
|
||||
// Thus, calling this here may or may not do what people want.
|
||||
//
|
||||
// See https://github.com/golang/protobuf/issues/424
|
||||
err := u.Unmarshal(p.buf[p.index:])
|
||||
p.index = len(p.buf)
|
||||
return err
|
||||
}
|
||||
|
||||
// Slow workaround for messages that aren't Unmarshalers.
|
||||
// This includes some hand-coded .pb.go files and
|
||||
// bootstrap protos.
|
||||
// TODO: fix all of those and then add Unmarshal to
|
||||
// the Message interface. Then:
|
||||
// The cast above and code below can be deleted.
|
||||
// The old unmarshaler can be deleted.
|
||||
// Clients can call Unmarshal directly (can already do that, actually).
|
||||
var info InternalMessageInfo
|
||||
err := info.Unmarshal(pb, p.buf[p.index:])
|
||||
p.index = len(p.buf)
|
||||
return err
|
||||
}
|
||||
|
|
@ -0,0 +1,63 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2018 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
import "errors"
|
||||
|
||||
// Deprecated: do not use.
|
||||
type Stats struct{ Emalloc, Dmalloc, Encode, Decode, Chit, Cmiss, Size uint64 }
|
||||
|
||||
// Deprecated: do not use.
|
||||
func GetStats() Stats { return Stats{} }
|
||||
|
||||
// Deprecated: do not use.
|
||||
func MarshalMessageSet(interface{}) ([]byte, error) {
|
||||
return nil, errors.New("proto: not implemented")
|
||||
}
|
||||
|
||||
// Deprecated: do not use.
|
||||
func UnmarshalMessageSet([]byte, interface{}) error {
|
||||
return errors.New("proto: not implemented")
|
||||
}
|
||||
|
||||
// Deprecated: do not use.
|
||||
func MarshalMessageSetJSON(interface{}) ([]byte, error) {
|
||||
return nil, errors.New("proto: not implemented")
|
||||
}
|
||||
|
||||
// Deprecated: do not use.
|
||||
func UnmarshalMessageSetJSON([]byte, interface{}) error {
|
||||
return errors.New("proto: not implemented")
|
||||
}
|
||||
|
||||
// Deprecated: do not use.
|
||||
func RegisterMessageSetType(Message, int32, string) {}
|
||||
|
|
@ -0,0 +1,350 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2017 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strings"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
type generatedDiscarder interface {
|
||||
XXX_DiscardUnknown()
|
||||
}
|
||||
|
||||
// DiscardUnknown recursively discards all unknown fields from this message
|
||||
// and all embedded messages.
|
||||
//
|
||||
// When unmarshaling a message with unrecognized fields, the tags and values
|
||||
// of such fields are preserved in the Message. This allows a later call to
|
||||
// marshal to be able to produce a message that continues to have those
|
||||
// unrecognized fields. To avoid this, DiscardUnknown is used to
|
||||
// explicitly clear the unknown fields after unmarshaling.
|
||||
//
|
||||
// For proto2 messages, the unknown fields of message extensions are only
|
||||
// discarded from messages that have been accessed via GetExtension.
|
||||
func DiscardUnknown(m Message) {
|
||||
if m, ok := m.(generatedDiscarder); ok {
|
||||
m.XXX_DiscardUnknown()
|
||||
return
|
||||
}
|
||||
// TODO: Dynamically populate a InternalMessageInfo for legacy messages,
|
||||
// but the master branch has no implementation for InternalMessageInfo,
|
||||
// so it would be more work to replicate that approach.
|
||||
discardLegacy(m)
|
||||
}
|
||||
|
||||
// DiscardUnknown recursively discards all unknown fields.
|
||||
func (a *InternalMessageInfo) DiscardUnknown(m Message) {
|
||||
di := atomicLoadDiscardInfo(&a.discard)
|
||||
if di == nil {
|
||||
di = getDiscardInfo(reflect.TypeOf(m).Elem())
|
||||
atomicStoreDiscardInfo(&a.discard, di)
|
||||
}
|
||||
di.discard(toPointer(&m))
|
||||
}
|
||||
|
||||
type discardInfo struct {
|
||||
typ reflect.Type
|
||||
|
||||
initialized int32 // 0: only typ is valid, 1: everything is valid
|
||||
lock sync.Mutex
|
||||
|
||||
fields []discardFieldInfo
|
||||
unrecognized field
|
||||
}
|
||||
|
||||
type discardFieldInfo struct {
|
||||
field field // Offset of field, guaranteed to be valid
|
||||
discard func(src pointer)
|
||||
}
|
||||
|
||||
var (
|
||||
discardInfoMap = map[reflect.Type]*discardInfo{}
|
||||
discardInfoLock sync.Mutex
|
||||
)
|
||||
|
||||
func getDiscardInfo(t reflect.Type) *discardInfo {
|
||||
discardInfoLock.Lock()
|
||||
defer discardInfoLock.Unlock()
|
||||
di := discardInfoMap[t]
|
||||
if di == nil {
|
||||
di = &discardInfo{typ: t}
|
||||
discardInfoMap[t] = di
|
||||
}
|
||||
return di
|
||||
}
|
||||
|
||||
func (di *discardInfo) discard(src pointer) {
|
||||
if src.isNil() {
|
||||
return // Nothing to do.
|
||||
}
|
||||
|
||||
if atomic.LoadInt32(&di.initialized) == 0 {
|
||||
di.computeDiscardInfo()
|
||||
}
|
||||
|
||||
for _, fi := range di.fields {
|
||||
sfp := src.offset(fi.field)
|
||||
fi.discard(sfp)
|
||||
}
|
||||
|
||||
// For proto2 messages, only discard unknown fields in message extensions
|
||||
// that have been accessed via GetExtension.
|
||||
if em, err := extendable(src.asPointerTo(di.typ).Interface()); err == nil {
|
||||
// Ignore lock since DiscardUnknown is not concurrency safe.
|
||||
emm, _ := em.extensionsRead()
|
||||
for _, mx := range emm {
|
||||
if m, ok := mx.value.(Message); ok {
|
||||
DiscardUnknown(m)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if di.unrecognized.IsValid() {
|
||||
*src.offset(di.unrecognized).toBytes() = nil
|
||||
}
|
||||
}
|
||||
|
||||
func (di *discardInfo) computeDiscardInfo() {
|
||||
di.lock.Lock()
|
||||
defer di.lock.Unlock()
|
||||
if di.initialized != 0 {
|
||||
return
|
||||
}
|
||||
t := di.typ
|
||||
n := t.NumField()
|
||||
|
||||
for i := 0; i < n; i++ {
|
||||
f := t.Field(i)
|
||||
if strings.HasPrefix(f.Name, "XXX_") {
|
||||
continue
|
||||
}
|
||||
|
||||
dfi := discardFieldInfo{field: toField(&f)}
|
||||
tf := f.Type
|
||||
|
||||
// Unwrap tf to get its most basic type.
|
||||
var isPointer, isSlice bool
|
||||
if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
|
||||
isSlice = true
|
||||
tf = tf.Elem()
|
||||
}
|
||||
if tf.Kind() == reflect.Ptr {
|
||||
isPointer = true
|
||||
tf = tf.Elem()
|
||||
}
|
||||
if isPointer && isSlice && tf.Kind() != reflect.Struct {
|
||||
panic(fmt.Sprintf("%v.%s cannot be a slice of pointers to primitive types", t, f.Name))
|
||||
}
|
||||
|
||||
switch tf.Kind() {
|
||||
case reflect.Struct:
|
||||
switch {
|
||||
case !isPointer:
|
||||
panic(fmt.Sprintf("%v.%s cannot be a direct struct value", t, f.Name))
|
||||
case isSlice: // E.g., []*pb.T
|
||||
di := getDiscardInfo(tf)
|
||||
dfi.discard = func(src pointer) {
|
||||
sps := src.getPointerSlice()
|
||||
for _, sp := range sps {
|
||||
if !sp.isNil() {
|
||||
di.discard(sp)
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., *pb.T
|
||||
di := getDiscardInfo(tf)
|
||||
dfi.discard = func(src pointer) {
|
||||
sp := src.getPointer()
|
||||
if !sp.isNil() {
|
||||
di.discard(sp)
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Map:
|
||||
switch {
|
||||
case isPointer || isSlice:
|
||||
panic(fmt.Sprintf("%v.%s cannot be a pointer to a map or a slice of map values", t, f.Name))
|
||||
default: // E.g., map[K]V
|
||||
if tf.Elem().Kind() == reflect.Ptr { // Proto struct (e.g., *T)
|
||||
dfi.discard = func(src pointer) {
|
||||
sm := src.asPointerTo(tf).Elem()
|
||||
if sm.Len() == 0 {
|
||||
return
|
||||
}
|
||||
for _, key := range sm.MapKeys() {
|
||||
val := sm.MapIndex(key)
|
||||
DiscardUnknown(val.Interface().(Message))
|
||||
}
|
||||
}
|
||||
} else {
|
||||
dfi.discard = func(pointer) {} // Noop
|
||||
}
|
||||
}
|
||||
case reflect.Interface:
|
||||
// Must be oneof field.
|
||||
switch {
|
||||
case isPointer || isSlice:
|
||||
panic(fmt.Sprintf("%v.%s cannot be a pointer to a interface or a slice of interface values", t, f.Name))
|
||||
default: // E.g., interface{}
|
||||
// TODO: Make this faster?
|
||||
dfi.discard = func(src pointer) {
|
||||
su := src.asPointerTo(tf).Elem()
|
||||
if !su.IsNil() {
|
||||
sv := su.Elem().Elem().Field(0)
|
||||
if sv.Kind() == reflect.Ptr && sv.IsNil() {
|
||||
return
|
||||
}
|
||||
switch sv.Type().Kind() {
|
||||
case reflect.Ptr: // Proto struct (e.g., *T)
|
||||
DiscardUnknown(sv.Interface().(Message))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
default:
|
||||
continue
|
||||
}
|
||||
di.fields = append(di.fields, dfi)
|
||||
}
|
||||
|
||||
di.unrecognized = invalidField
|
||||
if f, ok := t.FieldByName("XXX_unrecognized"); ok {
|
||||
if f.Type != reflect.TypeOf([]byte{}) {
|
||||
panic("expected XXX_unrecognized to be of type []byte")
|
||||
}
|
||||
di.unrecognized = toField(&f)
|
||||
}
|
||||
|
||||
atomic.StoreInt32(&di.initialized, 1)
|
||||
}
|
||||
|
||||
func discardLegacy(m Message) {
|
||||
v := reflect.ValueOf(m)
|
||||
if v.Kind() != reflect.Ptr || v.IsNil() {
|
||||
return
|
||||
}
|
||||
v = v.Elem()
|
||||
if v.Kind() != reflect.Struct {
|
||||
return
|
||||
}
|
||||
t := v.Type()
|
||||
|
||||
for i := 0; i < v.NumField(); i++ {
|
||||
f := t.Field(i)
|
||||
if strings.HasPrefix(f.Name, "XXX_") {
|
||||
continue
|
||||
}
|
||||
vf := v.Field(i)
|
||||
tf := f.Type
|
||||
|
||||
// Unwrap tf to get its most basic type.
|
||||
var isPointer, isSlice bool
|
||||
if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
|
||||
isSlice = true
|
||||
tf = tf.Elem()
|
||||
}
|
||||
if tf.Kind() == reflect.Ptr {
|
||||
isPointer = true
|
||||
tf = tf.Elem()
|
||||
}
|
||||
if isPointer && isSlice && tf.Kind() != reflect.Struct {
|
||||
panic(fmt.Sprintf("%T.%s cannot be a slice of pointers to primitive types", m, f.Name))
|
||||
}
|
||||
|
||||
switch tf.Kind() {
|
||||
case reflect.Struct:
|
||||
switch {
|
||||
case !isPointer:
|
||||
panic(fmt.Sprintf("%T.%s cannot be a direct struct value", m, f.Name))
|
||||
case isSlice: // E.g., []*pb.T
|
||||
for j := 0; j < vf.Len(); j++ {
|
||||
discardLegacy(vf.Index(j).Interface().(Message))
|
||||
}
|
||||
default: // E.g., *pb.T
|
||||
discardLegacy(vf.Interface().(Message))
|
||||
}
|
||||
case reflect.Map:
|
||||
switch {
|
||||
case isPointer || isSlice:
|
||||
panic(fmt.Sprintf("%T.%s cannot be a pointer to a map or a slice of map values", m, f.Name))
|
||||
default: // E.g., map[K]V
|
||||
tv := vf.Type().Elem()
|
||||
if tv.Kind() == reflect.Ptr && tv.Implements(protoMessageType) { // Proto struct (e.g., *T)
|
||||
for _, key := range vf.MapKeys() {
|
||||
val := vf.MapIndex(key)
|
||||
discardLegacy(val.Interface().(Message))
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Interface:
|
||||
// Must be oneof field.
|
||||
switch {
|
||||
case isPointer || isSlice:
|
||||
panic(fmt.Sprintf("%T.%s cannot be a pointer to a interface or a slice of interface values", m, f.Name))
|
||||
default: // E.g., test_proto.isCommunique_Union interface
|
||||
if !vf.IsNil() && f.Tag.Get("protobuf_oneof") != "" {
|
||||
vf = vf.Elem() // E.g., *test_proto.Communique_Msg
|
||||
if !vf.IsNil() {
|
||||
vf = vf.Elem() // E.g., test_proto.Communique_Msg
|
||||
vf = vf.Field(0) // E.g., Proto struct (e.g., *T) or primitive value
|
||||
if vf.Kind() == reflect.Ptr {
|
||||
discardLegacy(vf.Interface().(Message))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if vf := v.FieldByName("XXX_unrecognized"); vf.IsValid() {
|
||||
if vf.Type() != reflect.TypeOf([]byte{}) {
|
||||
panic("expected XXX_unrecognized to be of type []byte")
|
||||
}
|
||||
vf.Set(reflect.ValueOf([]byte(nil)))
|
||||
}
|
||||
|
||||
// For proto2 messages, only discard unknown fields in message extensions
|
||||
// that have been accessed via GetExtension.
|
||||
if em, err := extendable(m); err == nil {
|
||||
// Ignore lock since discardLegacy is not concurrency safe.
|
||||
emm, _ := em.extensionsRead()
|
||||
for _, mx := range emm {
|
||||
if m, ok := mx.value.(Message); ok {
|
||||
discardLegacy(m)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,203 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
/*
|
||||
* Routines for encoding data into the wire format for protocol buffers.
|
||||
*/
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"reflect"
|
||||
)
|
||||
|
||||
var (
|
||||
// errRepeatedHasNil is the error returned if Marshal is called with
|
||||
// a struct with a repeated field containing a nil element.
|
||||
errRepeatedHasNil = errors.New("proto: repeated field has nil element")
|
||||
|
||||
// errOneofHasNil is the error returned if Marshal is called with
|
||||
// a struct with a oneof field containing a nil element.
|
||||
errOneofHasNil = errors.New("proto: oneof field has nil value")
|
||||
|
||||
// ErrNil is the error returned if Marshal is called with nil.
|
||||
ErrNil = errors.New("proto: Marshal called with nil")
|
||||
|
||||
// ErrTooLarge is the error returned if Marshal is called with a
|
||||
// message that encodes to >2GB.
|
||||
ErrTooLarge = errors.New("proto: message encodes to over 2 GB")
|
||||
)
|
||||
|
||||
// The fundamental encoders that put bytes on the wire.
|
||||
// Those that take integer types all accept uint64 and are
|
||||
// therefore of type valueEncoder.
|
||||
|
||||
const maxVarintBytes = 10 // maximum length of a varint
|
||||
|
||||
// EncodeVarint returns the varint encoding of x.
|
||||
// This is the format for the
|
||||
// int32, int64, uint32, uint64, bool, and enum
|
||||
// protocol buffer types.
|
||||
// Not used by the package itself, but helpful to clients
|
||||
// wishing to use the same encoding.
|
||||
func EncodeVarint(x uint64) []byte {
|
||||
var buf [maxVarintBytes]byte
|
||||
var n int
|
||||
for n = 0; x > 127; n++ {
|
||||
buf[n] = 0x80 | uint8(x&0x7F)
|
||||
x >>= 7
|
||||
}
|
||||
buf[n] = uint8(x)
|
||||
n++
|
||||
return buf[0:n]
|
||||
}
|
||||
|
||||
// EncodeVarint writes a varint-encoded integer to the Buffer.
|
||||
// This is the format for the
|
||||
// int32, int64, uint32, uint64, bool, and enum
|
||||
// protocol buffer types.
|
||||
func (p *Buffer) EncodeVarint(x uint64) error {
|
||||
for x >= 1<<7 {
|
||||
p.buf = append(p.buf, uint8(x&0x7f|0x80))
|
||||
x >>= 7
|
||||
}
|
||||
p.buf = append(p.buf, uint8(x))
|
||||
return nil
|
||||
}
|
||||
|
||||
// SizeVarint returns the varint encoding size of an integer.
|
||||
func SizeVarint(x uint64) int {
|
||||
switch {
|
||||
case x < 1<<7:
|
||||
return 1
|
||||
case x < 1<<14:
|
||||
return 2
|
||||
case x < 1<<21:
|
||||
return 3
|
||||
case x < 1<<28:
|
||||
return 4
|
||||
case x < 1<<35:
|
||||
return 5
|
||||
case x < 1<<42:
|
||||
return 6
|
||||
case x < 1<<49:
|
||||
return 7
|
||||
case x < 1<<56:
|
||||
return 8
|
||||
case x < 1<<63:
|
||||
return 9
|
||||
}
|
||||
return 10
|
||||
}
|
||||
|
||||
// EncodeFixed64 writes a 64-bit integer to the Buffer.
|
||||
// This is the format for the
|
||||
// fixed64, sfixed64, and double protocol buffer types.
|
||||
func (p *Buffer) EncodeFixed64(x uint64) error {
|
||||
p.buf = append(p.buf,
|
||||
uint8(x),
|
||||
uint8(x>>8),
|
||||
uint8(x>>16),
|
||||
uint8(x>>24),
|
||||
uint8(x>>32),
|
||||
uint8(x>>40),
|
||||
uint8(x>>48),
|
||||
uint8(x>>56))
|
||||
return nil
|
||||
}
|
||||
|
||||
// EncodeFixed32 writes a 32-bit integer to the Buffer.
|
||||
// This is the format for the
|
||||
// fixed32, sfixed32, and float protocol buffer types.
|
||||
func (p *Buffer) EncodeFixed32(x uint64) error {
|
||||
p.buf = append(p.buf,
|
||||
uint8(x),
|
||||
uint8(x>>8),
|
||||
uint8(x>>16),
|
||||
uint8(x>>24))
|
||||
return nil
|
||||
}
|
||||
|
||||
// EncodeZigzag64 writes a zigzag-encoded 64-bit integer
|
||||
// to the Buffer.
|
||||
// This is the format used for the sint64 protocol buffer type.
|
||||
func (p *Buffer) EncodeZigzag64(x uint64) error {
|
||||
// use signed number to get arithmetic right shift.
|
||||
return p.EncodeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
|
||||
}
|
||||
|
||||
// EncodeZigzag32 writes a zigzag-encoded 32-bit integer
|
||||
// to the Buffer.
|
||||
// This is the format used for the sint32 protocol buffer type.
|
||||
func (p *Buffer) EncodeZigzag32(x uint64) error {
|
||||
// use signed number to get arithmetic right shift.
|
||||
return p.EncodeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
|
||||
}
|
||||
|
||||
// EncodeRawBytes writes a count-delimited byte buffer to the Buffer.
|
||||
// This is the format used for the bytes protocol buffer
|
||||
// type and for embedded messages.
|
||||
func (p *Buffer) EncodeRawBytes(b []byte) error {
|
||||
p.EncodeVarint(uint64(len(b)))
|
||||
p.buf = append(p.buf, b...)
|
||||
return nil
|
||||
}
|
||||
|
||||
// EncodeStringBytes writes an encoded string to the Buffer.
|
||||
// This is the format used for the proto2 string type.
|
||||
func (p *Buffer) EncodeStringBytes(s string) error {
|
||||
p.EncodeVarint(uint64(len(s)))
|
||||
p.buf = append(p.buf, s...)
|
||||
return nil
|
||||
}
|
||||
|
||||
// Marshaler is the interface representing objects that can marshal themselves.
|
||||
type Marshaler interface {
|
||||
Marshal() ([]byte, error)
|
||||
}
|
||||
|
||||
// EncodeMessage writes the protocol buffer to the Buffer,
|
||||
// prefixed by a varint-encoded length.
|
||||
func (p *Buffer) EncodeMessage(pb Message) error {
|
||||
siz := Size(pb)
|
||||
p.EncodeVarint(uint64(siz))
|
||||
return p.Marshal(pb)
|
||||
}
|
||||
|
||||
// All protocol buffer fields are nillable, but be careful.
|
||||
func isNil(v reflect.Value) bool {
|
||||
switch v.Kind() {
|
||||
case reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
|
||||
return v.IsNil()
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
|
@ -0,0 +1,301 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2011 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
// Protocol buffer comparison.
|
||||
|
||||
package proto
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"log"
|
||||
"reflect"
|
||||
"strings"
|
||||
)
|
||||
|
||||
/*
|
||||
Equal returns true iff protocol buffers a and b are equal.
|
||||
The arguments must both be pointers to protocol buffer structs.
|
||||
|
||||
Equality is defined in this way:
|
||||
- Two messages are equal iff they are the same type,
|
||||
corresponding fields are equal, unknown field sets
|
||||
are equal, and extensions sets are equal.
|
||||
- Two set scalar fields are equal iff their values are equal.
|
||||
If the fields are of a floating-point type, remember that
|
||||
NaN != x for all x, including NaN. If the message is defined
|
||||
in a proto3 .proto file, fields are not "set"; specifically,
|
||||
zero length proto3 "bytes" fields are equal (nil == {}).
|
||||
- Two repeated fields are equal iff their lengths are the same,
|
||||
and their corresponding elements are equal. Note a "bytes" field,
|
||||
although represented by []byte, is not a repeated field and the
|
||||
rule for the scalar fields described above applies.
|
||||
- Two unset fields are equal.
|
||||
- Two unknown field sets are equal if their current
|
||||
encoded state is equal.
|
||||
- Two extension sets are equal iff they have corresponding
|
||||
elements that are pairwise equal.
|
||||
- Two map fields are equal iff their lengths are the same,
|
||||
and they contain the same set of elements. Zero-length map
|
||||
fields are equal.
|
||||
- Every other combination of things are not equal.
|
||||
|
||||
The return value is undefined if a and b are not protocol buffers.
|
||||
*/
|
||||
func Equal(a, b Message) bool {
|
||||
if a == nil || b == nil {
|
||||
return a == b
|
||||
}
|
||||
v1, v2 := reflect.ValueOf(a), reflect.ValueOf(b)
|
||||
if v1.Type() != v2.Type() {
|
||||
return false
|
||||
}
|
||||
if v1.Kind() == reflect.Ptr {
|
||||
if v1.IsNil() {
|
||||
return v2.IsNil()
|
||||
}
|
||||
if v2.IsNil() {
|
||||
return false
|
||||
}
|
||||
v1, v2 = v1.Elem(), v2.Elem()
|
||||
}
|
||||
if v1.Kind() != reflect.Struct {
|
||||
return false
|
||||
}
|
||||
return equalStruct(v1, v2)
|
||||
}
|
||||
|
||||
// v1 and v2 are known to have the same type.
|
||||
func equalStruct(v1, v2 reflect.Value) bool {
|
||||
sprop := GetProperties(v1.Type())
|
||||
for i := 0; i < v1.NumField(); i++ {
|
||||
f := v1.Type().Field(i)
|
||||
if strings.HasPrefix(f.Name, "XXX_") {
|
||||
continue
|
||||
}
|
||||
f1, f2 := v1.Field(i), v2.Field(i)
|
||||
if f.Type.Kind() == reflect.Ptr {
|
||||
if n1, n2 := f1.IsNil(), f2.IsNil(); n1 && n2 {
|
||||
// both unset
|
||||
continue
|
||||
} else if n1 != n2 {
|
||||
// set/unset mismatch
|
||||
return false
|
||||
}
|
||||
f1, f2 = f1.Elem(), f2.Elem()
|
||||
}
|
||||
if !equalAny(f1, f2, sprop.Prop[i]) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
|
||||
em2 := v2.FieldByName("XXX_InternalExtensions")
|
||||
if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
|
||||
em2 := v2.FieldByName("XXX_extensions")
|
||||
if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
uf := v1.FieldByName("XXX_unrecognized")
|
||||
if !uf.IsValid() {
|
||||
return true
|
||||
}
|
||||
|
||||
u1 := uf.Bytes()
|
||||
u2 := v2.FieldByName("XXX_unrecognized").Bytes()
|
||||
return bytes.Equal(u1, u2)
|
||||
}
|
||||
|
||||
// v1 and v2 are known to have the same type.
|
||||
// prop may be nil.
|
||||
func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
|
||||
if v1.Type() == protoMessageType {
|
||||
m1, _ := v1.Interface().(Message)
|
||||
m2, _ := v2.Interface().(Message)
|
||||
return Equal(m1, m2)
|
||||
}
|
||||
switch v1.Kind() {
|
||||
case reflect.Bool:
|
||||
return v1.Bool() == v2.Bool()
|
||||
case reflect.Float32, reflect.Float64:
|
||||
return v1.Float() == v2.Float()
|
||||
case reflect.Int32, reflect.Int64:
|
||||
return v1.Int() == v2.Int()
|
||||
case reflect.Interface:
|
||||
// Probably a oneof field; compare the inner values.
|
||||
n1, n2 := v1.IsNil(), v2.IsNil()
|
||||
if n1 || n2 {
|
||||
return n1 == n2
|
||||
}
|
||||
e1, e2 := v1.Elem(), v2.Elem()
|
||||
if e1.Type() != e2.Type() {
|
||||
return false
|
||||
}
|
||||
return equalAny(e1, e2, nil)
|
||||
case reflect.Map:
|
||||
if v1.Len() != v2.Len() {
|
||||
return false
|
||||
}
|
||||
for _, key := range v1.MapKeys() {
|
||||
val2 := v2.MapIndex(key)
|
||||
if !val2.IsValid() {
|
||||
// This key was not found in the second map.
|
||||
return false
|
||||
}
|
||||
if !equalAny(v1.MapIndex(key), val2, nil) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
case reflect.Ptr:
|
||||
// Maps may have nil values in them, so check for nil.
|
||||
if v1.IsNil() && v2.IsNil() {
|
||||
return true
|
||||
}
|
||||
if v1.IsNil() != v2.IsNil() {
|
||||
return false
|
||||
}
|
||||
return equalAny(v1.Elem(), v2.Elem(), prop)
|
||||
case reflect.Slice:
|
||||
if v1.Type().Elem().Kind() == reflect.Uint8 {
|
||||
// short circuit: []byte
|
||||
|
||||
// Edge case: if this is in a proto3 message, a zero length
|
||||
// bytes field is considered the zero value.
|
||||
if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
|
||||
return true
|
||||
}
|
||||
if v1.IsNil() != v2.IsNil() {
|
||||
return false
|
||||
}
|
||||
return bytes.Equal(v1.Interface().([]byte), v2.Interface().([]byte))
|
||||
}
|
||||
|
||||
if v1.Len() != v2.Len() {
|
||||
return false
|
||||
}
|
||||
for i := 0; i < v1.Len(); i++ {
|
||||
if !equalAny(v1.Index(i), v2.Index(i), prop) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
case reflect.String:
|
||||
return v1.Interface().(string) == v2.Interface().(string)
|
||||
case reflect.Struct:
|
||||
return equalStruct(v1, v2)
|
||||
case reflect.Uint32, reflect.Uint64:
|
||||
return v1.Uint() == v2.Uint()
|
||||
}
|
||||
|
||||
// unknown type, so not a protocol buffer
|
||||
log.Printf("proto: don't know how to compare %v", v1)
|
||||
return false
|
||||
}
|
||||
|
||||
// base is the struct type that the extensions are based on.
|
||||
// x1 and x2 are InternalExtensions.
|
||||
func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
|
||||
em1, _ := x1.extensionsRead()
|
||||
em2, _ := x2.extensionsRead()
|
||||
return equalExtMap(base, em1, em2)
|
||||
}
|
||||
|
||||
func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
|
||||
if len(em1) != len(em2) {
|
||||
return false
|
||||
}
|
||||
|
||||
for extNum, e1 := range em1 {
|
||||
e2, ok := em2[extNum]
|
||||
if !ok {
|
||||
return false
|
||||
}
|
||||
|
||||
m1 := extensionAsLegacyType(e1.value)
|
||||
m2 := extensionAsLegacyType(e2.value)
|
||||
|
||||
if m1 == nil && m2 == nil {
|
||||
// Both have only encoded form.
|
||||
if bytes.Equal(e1.enc, e2.enc) {
|
||||
continue
|
||||
}
|
||||
// The bytes are different, but the extensions might still be
|
||||
// equal. We need to decode them to compare.
|
||||
}
|
||||
|
||||
if m1 != nil && m2 != nil {
|
||||
// Both are unencoded.
|
||||
if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
|
||||
return false
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// At least one is encoded. To do a semantically correct comparison
|
||||
// we need to unmarshal them first.
|
||||
var desc *ExtensionDesc
|
||||
if m := extensionMaps[base]; m != nil {
|
||||
desc = m[extNum]
|
||||
}
|
||||
if desc == nil {
|
||||
// If both have only encoded form and the bytes are the same,
|
||||
// it is handled above. We get here when the bytes are different.
|
||||
// We don't know how to decode it, so just compare them as byte
|
||||
// slices.
|
||||
log.Printf("proto: don't know how to compare extension %d of %v", extNum, base)
|
||||
return false
|
||||
}
|
||||
var err error
|
||||
if m1 == nil {
|
||||
m1, err = decodeExtension(e1.enc, desc)
|
||||
}
|
||||
if m2 == nil && err == nil {
|
||||
m2, err = decodeExtension(e2.enc, desc)
|
||||
}
|
||||
if err != nil {
|
||||
// The encoded form is invalid.
|
||||
log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
|
||||
return false
|
||||
}
|
||||
if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
|
@ -0,0 +1,607 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
/*
|
||||
* Types and routines for supporting protocol buffer extensions.
|
||||
*/
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"sync"
|
||||
)
|
||||
|
||||
// ErrMissingExtension is the error returned by GetExtension if the named extension is not in the message.
|
||||
var ErrMissingExtension = errors.New("proto: missing extension")
|
||||
|
||||
// ExtensionRange represents a range of message extensions for a protocol buffer.
|
||||
// Used in code generated by the protocol compiler.
|
||||
type ExtensionRange struct {
|
||||
Start, End int32 // both inclusive
|
||||
}
|
||||
|
||||
// extendableProto is an interface implemented by any protocol buffer generated by the current
|
||||
// proto compiler that may be extended.
|
||||
type extendableProto interface {
|
||||
Message
|
||||
ExtensionRangeArray() []ExtensionRange
|
||||
extensionsWrite() map[int32]Extension
|
||||
extensionsRead() (map[int32]Extension, sync.Locker)
|
||||
}
|
||||
|
||||
// extendableProtoV1 is an interface implemented by a protocol buffer generated by the previous
|
||||
// version of the proto compiler that may be extended.
|
||||
type extendableProtoV1 interface {
|
||||
Message
|
||||
ExtensionRangeArray() []ExtensionRange
|
||||
ExtensionMap() map[int32]Extension
|
||||
}
|
||||
|
||||
// extensionAdapter is a wrapper around extendableProtoV1 that implements extendableProto.
|
||||
type extensionAdapter struct {
|
||||
extendableProtoV1
|
||||
}
|
||||
|
||||
func (e extensionAdapter) extensionsWrite() map[int32]Extension {
|
||||
return e.ExtensionMap()
|
||||
}
|
||||
|
||||
func (e extensionAdapter) extensionsRead() (map[int32]Extension, sync.Locker) {
|
||||
return e.ExtensionMap(), notLocker{}
|
||||
}
|
||||
|
||||
// notLocker is a sync.Locker whose Lock and Unlock methods are nops.
|
||||
type notLocker struct{}
|
||||
|
||||
func (n notLocker) Lock() {}
|
||||
func (n notLocker) Unlock() {}
|
||||
|
||||
// extendable returns the extendableProto interface for the given generated proto message.
|
||||
// If the proto message has the old extension format, it returns a wrapper that implements
|
||||
// the extendableProto interface.
|
||||
func extendable(p interface{}) (extendableProto, error) {
|
||||
switch p := p.(type) {
|
||||
case extendableProto:
|
||||
if isNilPtr(p) {
|
||||
return nil, fmt.Errorf("proto: nil %T is not extendable", p)
|
||||
}
|
||||
return p, nil
|
||||
case extendableProtoV1:
|
||||
if isNilPtr(p) {
|
||||
return nil, fmt.Errorf("proto: nil %T is not extendable", p)
|
||||
}
|
||||
return extensionAdapter{p}, nil
|
||||
}
|
||||
// Don't allocate a specific error containing %T:
|
||||
// this is the hot path for Clone and MarshalText.
|
||||
return nil, errNotExtendable
|
||||
}
|
||||
|
||||
var errNotExtendable = errors.New("proto: not an extendable proto.Message")
|
||||
|
||||
func isNilPtr(x interface{}) bool {
|
||||
v := reflect.ValueOf(x)
|
||||
return v.Kind() == reflect.Ptr && v.IsNil()
|
||||
}
|
||||
|
||||
// XXX_InternalExtensions is an internal representation of proto extensions.
|
||||
//
|
||||
// Each generated message struct type embeds an anonymous XXX_InternalExtensions field,
|
||||
// thus gaining the unexported 'extensions' method, which can be called only from the proto package.
|
||||
//
|
||||
// The methods of XXX_InternalExtensions are not concurrency safe in general,
|
||||
// but calls to logically read-only methods such as has and get may be executed concurrently.
|
||||
type XXX_InternalExtensions struct {
|
||||
// The struct must be indirect so that if a user inadvertently copies a
|
||||
// generated message and its embedded XXX_InternalExtensions, they
|
||||
// avoid the mayhem of a copied mutex.
|
||||
//
|
||||
// The mutex serializes all logically read-only operations to p.extensionMap.
|
||||
// It is up to the client to ensure that write operations to p.extensionMap are
|
||||
// mutually exclusive with other accesses.
|
||||
p *struct {
|
||||
mu sync.Mutex
|
||||
extensionMap map[int32]Extension
|
||||
}
|
||||
}
|
||||
|
||||
// extensionsWrite returns the extension map, creating it on first use.
|
||||
func (e *XXX_InternalExtensions) extensionsWrite() map[int32]Extension {
|
||||
if e.p == nil {
|
||||
e.p = new(struct {
|
||||
mu sync.Mutex
|
||||
extensionMap map[int32]Extension
|
||||
})
|
||||
e.p.extensionMap = make(map[int32]Extension)
|
||||
}
|
||||
return e.p.extensionMap
|
||||
}
|
||||
|
||||
// extensionsRead returns the extensions map for read-only use. It may be nil.
|
||||
// The caller must hold the returned mutex's lock when accessing Elements within the map.
|
||||
func (e *XXX_InternalExtensions) extensionsRead() (map[int32]Extension, sync.Locker) {
|
||||
if e.p == nil {
|
||||
return nil, nil
|
||||
}
|
||||
return e.p.extensionMap, &e.p.mu
|
||||
}
|
||||
|
||||
// ExtensionDesc represents an extension specification.
|
||||
// Used in generated code from the protocol compiler.
|
||||
type ExtensionDesc struct {
|
||||
ExtendedType Message // nil pointer to the type that is being extended
|
||||
ExtensionType interface{} // nil pointer to the extension type
|
||||
Field int32 // field number
|
||||
Name string // fully-qualified name of extension, for text formatting
|
||||
Tag string // protobuf tag style
|
||||
Filename string // name of the file in which the extension is defined
|
||||
}
|
||||
|
||||
func (ed *ExtensionDesc) repeated() bool {
|
||||
t := reflect.TypeOf(ed.ExtensionType)
|
||||
return t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8
|
||||
}
|
||||
|
||||
// Extension represents an extension in a message.
|
||||
type Extension struct {
|
||||
// When an extension is stored in a message using SetExtension
|
||||
// only desc and value are set. When the message is marshaled
|
||||
// enc will be set to the encoded form of the message.
|
||||
//
|
||||
// When a message is unmarshaled and contains extensions, each
|
||||
// extension will have only enc set. When such an extension is
|
||||
// accessed using GetExtension (or GetExtensions) desc and value
|
||||
// will be set.
|
||||
desc *ExtensionDesc
|
||||
|
||||
// value is a concrete value for the extension field. Let the type of
|
||||
// desc.ExtensionType be the "API type" and the type of Extension.value
|
||||
// be the "storage type". The API type and storage type are the same except:
|
||||
// * For scalars (except []byte), the API type uses *T,
|
||||
// while the storage type uses T.
|
||||
// * For repeated fields, the API type uses []T, while the storage type
|
||||
// uses *[]T.
|
||||
//
|
||||
// The reason for the divergence is so that the storage type more naturally
|
||||
// matches what is expected of when retrieving the values through the
|
||||
// protobuf reflection APIs.
|
||||
//
|
||||
// The value may only be populated if desc is also populated.
|
||||
value interface{}
|
||||
|
||||
// enc is the raw bytes for the extension field.
|
||||
enc []byte
|
||||
}
|
||||
|
||||
// SetRawExtension is for testing only.
|
||||
func SetRawExtension(base Message, id int32, b []byte) {
|
||||
epb, err := extendable(base)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
extmap := epb.extensionsWrite()
|
||||
extmap[id] = Extension{enc: b}
|
||||
}
|
||||
|
||||
// isExtensionField returns true iff the given field number is in an extension range.
|
||||
func isExtensionField(pb extendableProto, field int32) bool {
|
||||
for _, er := range pb.ExtensionRangeArray() {
|
||||
if er.Start <= field && field <= er.End {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// checkExtensionTypes checks that the given extension is valid for pb.
|
||||
func checkExtensionTypes(pb extendableProto, extension *ExtensionDesc) error {
|
||||
var pbi interface{} = pb
|
||||
// Check the extended type.
|
||||
if ea, ok := pbi.(extensionAdapter); ok {
|
||||
pbi = ea.extendableProtoV1
|
||||
}
|
||||
if a, b := reflect.TypeOf(pbi), reflect.TypeOf(extension.ExtendedType); a != b {
|
||||
return fmt.Errorf("proto: bad extended type; %v does not extend %v", b, a)
|
||||
}
|
||||
// Check the range.
|
||||
if !isExtensionField(pb, extension.Field) {
|
||||
return errors.New("proto: bad extension number; not in declared ranges")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// extPropKey is sufficient to uniquely identify an extension.
|
||||
type extPropKey struct {
|
||||
base reflect.Type
|
||||
field int32
|
||||
}
|
||||
|
||||
var extProp = struct {
|
||||
sync.RWMutex
|
||||
m map[extPropKey]*Properties
|
||||
}{
|
||||
m: make(map[extPropKey]*Properties),
|
||||
}
|
||||
|
||||
func extensionProperties(ed *ExtensionDesc) *Properties {
|
||||
key := extPropKey{base: reflect.TypeOf(ed.ExtendedType), field: ed.Field}
|
||||
|
||||
extProp.RLock()
|
||||
if prop, ok := extProp.m[key]; ok {
|
||||
extProp.RUnlock()
|
||||
return prop
|
||||
}
|
||||
extProp.RUnlock()
|
||||
|
||||
extProp.Lock()
|
||||
defer extProp.Unlock()
|
||||
// Check again.
|
||||
if prop, ok := extProp.m[key]; ok {
|
||||
return prop
|
||||
}
|
||||
|
||||
prop := new(Properties)
|
||||
prop.Init(reflect.TypeOf(ed.ExtensionType), "unknown_name", ed.Tag, nil)
|
||||
extProp.m[key] = prop
|
||||
return prop
|
||||
}
|
||||
|
||||
// HasExtension returns whether the given extension is present in pb.
|
||||
func HasExtension(pb Message, extension *ExtensionDesc) bool {
|
||||
// TODO: Check types, field numbers, etc.?
|
||||
epb, err := extendable(pb)
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
extmap, mu := epb.extensionsRead()
|
||||
if extmap == nil {
|
||||
return false
|
||||
}
|
||||
mu.Lock()
|
||||
_, ok := extmap[extension.Field]
|
||||
mu.Unlock()
|
||||
return ok
|
||||
}
|
||||
|
||||
// ClearExtension removes the given extension from pb.
|
||||
func ClearExtension(pb Message, extension *ExtensionDesc) {
|
||||
epb, err := extendable(pb)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
// TODO: Check types, field numbers, etc.?
|
||||
extmap := epb.extensionsWrite()
|
||||
delete(extmap, extension.Field)
|
||||
}
|
||||
|
||||
// GetExtension retrieves a proto2 extended field from pb.
|
||||
//
|
||||
// If the descriptor is type complete (i.e., ExtensionDesc.ExtensionType is non-nil),
|
||||
// then GetExtension parses the encoded field and returns a Go value of the specified type.
|
||||
// If the field is not present, then the default value is returned (if one is specified),
|
||||
// otherwise ErrMissingExtension is reported.
|
||||
//
|
||||
// If the descriptor is not type complete (i.e., ExtensionDesc.ExtensionType is nil),
|
||||
// then GetExtension returns the raw encoded bytes of the field extension.
|
||||
func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
|
||||
epb, err := extendable(pb)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if extension.ExtendedType != nil {
|
||||
// can only check type if this is a complete descriptor
|
||||
if err := checkExtensionTypes(epb, extension); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
emap, mu := epb.extensionsRead()
|
||||
if emap == nil {
|
||||
return defaultExtensionValue(extension)
|
||||
}
|
||||
mu.Lock()
|
||||
defer mu.Unlock()
|
||||
e, ok := emap[extension.Field]
|
||||
if !ok {
|
||||
// defaultExtensionValue returns the default value or
|
||||
// ErrMissingExtension if there is no default.
|
||||
return defaultExtensionValue(extension)
|
||||
}
|
||||
|
||||
if e.value != nil {
|
||||
// Already decoded. Check the descriptor, though.
|
||||
if e.desc != extension {
|
||||
// This shouldn't happen. If it does, it means that
|
||||
// GetExtension was called twice with two different
|
||||
// descriptors with the same field number.
|
||||
return nil, errors.New("proto: descriptor conflict")
|
||||
}
|
||||
return extensionAsLegacyType(e.value), nil
|
||||
}
|
||||
|
||||
if extension.ExtensionType == nil {
|
||||
// incomplete descriptor
|
||||
return e.enc, nil
|
||||
}
|
||||
|
||||
v, err := decodeExtension(e.enc, extension)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Remember the decoded version and drop the encoded version.
|
||||
// That way it is safe to mutate what we return.
|
||||
e.value = extensionAsStorageType(v)
|
||||
e.desc = extension
|
||||
e.enc = nil
|
||||
emap[extension.Field] = e
|
||||
return extensionAsLegacyType(e.value), nil
|
||||
}
|
||||
|
||||
// defaultExtensionValue returns the default value for extension.
|
||||
// If no default for an extension is defined ErrMissingExtension is returned.
|
||||
func defaultExtensionValue(extension *ExtensionDesc) (interface{}, error) {
|
||||
if extension.ExtensionType == nil {
|
||||
// incomplete descriptor, so no default
|
||||
return nil, ErrMissingExtension
|
||||
}
|
||||
|
||||
t := reflect.TypeOf(extension.ExtensionType)
|
||||
props := extensionProperties(extension)
|
||||
|
||||
sf, _, err := fieldDefault(t, props)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if sf == nil || sf.value == nil {
|
||||
// There is no default value.
|
||||
return nil, ErrMissingExtension
|
||||
}
|
||||
|
||||
if t.Kind() != reflect.Ptr {
|
||||
// We do not need to return a Ptr, we can directly return sf.value.
|
||||
return sf.value, nil
|
||||
}
|
||||
|
||||
// We need to return an interface{} that is a pointer to sf.value.
|
||||
value := reflect.New(t).Elem()
|
||||
value.Set(reflect.New(value.Type().Elem()))
|
||||
if sf.kind == reflect.Int32 {
|
||||
// We may have an int32 or an enum, but the underlying data is int32.
|
||||
// Since we can't set an int32 into a non int32 reflect.value directly
|
||||
// set it as a int32.
|
||||
value.Elem().SetInt(int64(sf.value.(int32)))
|
||||
} else {
|
||||
value.Elem().Set(reflect.ValueOf(sf.value))
|
||||
}
|
||||
return value.Interface(), nil
|
||||
}
|
||||
|
||||
// decodeExtension decodes an extension encoded in b.
|
||||
func decodeExtension(b []byte, extension *ExtensionDesc) (interface{}, error) {
|
||||
t := reflect.TypeOf(extension.ExtensionType)
|
||||
unmarshal := typeUnmarshaler(t, extension.Tag)
|
||||
|
||||
// t is a pointer to a struct, pointer to basic type or a slice.
|
||||
// Allocate space to store the pointer/slice.
|
||||
value := reflect.New(t).Elem()
|
||||
|
||||
var err error
|
||||
for {
|
||||
x, n := decodeVarint(b)
|
||||
if n == 0 {
|
||||
return nil, io.ErrUnexpectedEOF
|
||||
}
|
||||
b = b[n:]
|
||||
wire := int(x) & 7
|
||||
|
||||
b, err = unmarshal(b, valToPointer(value.Addr()), wire)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(b) == 0 {
|
||||
break
|
||||
}
|
||||
}
|
||||
return value.Interface(), nil
|
||||
}
|
||||
|
||||
// GetExtensions returns a slice of the extensions present in pb that are also listed in es.
|
||||
// The returned slice has the same length as es; missing extensions will appear as nil elements.
|
||||
func GetExtensions(pb Message, es []*ExtensionDesc) (extensions []interface{}, err error) {
|
||||
epb, err := extendable(pb)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
extensions = make([]interface{}, len(es))
|
||||
for i, e := range es {
|
||||
extensions[i], err = GetExtension(epb, e)
|
||||
if err == ErrMissingExtension {
|
||||
err = nil
|
||||
}
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// ExtensionDescs returns a new slice containing pb's extension descriptors, in undefined order.
|
||||
// For non-registered extensions, ExtensionDescs returns an incomplete descriptor containing
|
||||
// just the Field field, which defines the extension's field number.
|
||||
func ExtensionDescs(pb Message) ([]*ExtensionDesc, error) {
|
||||
epb, err := extendable(pb)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
registeredExtensions := RegisteredExtensions(pb)
|
||||
|
||||
emap, mu := epb.extensionsRead()
|
||||
if emap == nil {
|
||||
return nil, nil
|
||||
}
|
||||
mu.Lock()
|
||||
defer mu.Unlock()
|
||||
extensions := make([]*ExtensionDesc, 0, len(emap))
|
||||
for extid, e := range emap {
|
||||
desc := e.desc
|
||||
if desc == nil {
|
||||
desc = registeredExtensions[extid]
|
||||
if desc == nil {
|
||||
desc = &ExtensionDesc{Field: extid}
|
||||
}
|
||||
}
|
||||
|
||||
extensions = append(extensions, desc)
|
||||
}
|
||||
return extensions, nil
|
||||
}
|
||||
|
||||
// SetExtension sets the specified extension of pb to the specified value.
|
||||
func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error {
|
||||
epb, err := extendable(pb)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := checkExtensionTypes(epb, extension); err != nil {
|
||||
return err
|
||||
}
|
||||
typ := reflect.TypeOf(extension.ExtensionType)
|
||||
if typ != reflect.TypeOf(value) {
|
||||
return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", value, extension.ExtensionType)
|
||||
}
|
||||
// nil extension values need to be caught early, because the
|
||||
// encoder can't distinguish an ErrNil due to a nil extension
|
||||
// from an ErrNil due to a missing field. Extensions are
|
||||
// always optional, so the encoder would just swallow the error
|
||||
// and drop all the extensions from the encoded message.
|
||||
if reflect.ValueOf(value).IsNil() {
|
||||
return fmt.Errorf("proto: SetExtension called with nil value of type %T", value)
|
||||
}
|
||||
|
||||
extmap := epb.extensionsWrite()
|
||||
extmap[extension.Field] = Extension{desc: extension, value: extensionAsStorageType(value)}
|
||||
return nil
|
||||
}
|
||||
|
||||
// ClearAllExtensions clears all extensions from pb.
|
||||
func ClearAllExtensions(pb Message) {
|
||||
epb, err := extendable(pb)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
m := epb.extensionsWrite()
|
||||
for k := range m {
|
||||
delete(m, k)
|
||||
}
|
||||
}
|
||||
|
||||
// A global registry of extensions.
|
||||
// The generated code will register the generated descriptors by calling RegisterExtension.
|
||||
|
||||
var extensionMaps = make(map[reflect.Type]map[int32]*ExtensionDesc)
|
||||
|
||||
// RegisterExtension is called from the generated code.
|
||||
func RegisterExtension(desc *ExtensionDesc) {
|
||||
st := reflect.TypeOf(desc.ExtendedType).Elem()
|
||||
m := extensionMaps[st]
|
||||
if m == nil {
|
||||
m = make(map[int32]*ExtensionDesc)
|
||||
extensionMaps[st] = m
|
||||
}
|
||||
if _, ok := m[desc.Field]; ok {
|
||||
panic("proto: duplicate extension registered: " + st.String() + " " + strconv.Itoa(int(desc.Field)))
|
||||
}
|
||||
m[desc.Field] = desc
|
||||
}
|
||||
|
||||
// RegisteredExtensions returns a map of the registered extensions of a
|
||||
// protocol buffer struct, indexed by the extension number.
|
||||
// The argument pb should be a nil pointer to the struct type.
|
||||
func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
|
||||
return extensionMaps[reflect.TypeOf(pb).Elem()]
|
||||
}
|
||||
|
||||
// extensionAsLegacyType converts an value in the storage type as the API type.
|
||||
// See Extension.value.
|
||||
func extensionAsLegacyType(v interface{}) interface{} {
|
||||
switch rv := reflect.ValueOf(v); rv.Kind() {
|
||||
case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
|
||||
// Represent primitive types as a pointer to the value.
|
||||
rv2 := reflect.New(rv.Type())
|
||||
rv2.Elem().Set(rv)
|
||||
v = rv2.Interface()
|
||||
case reflect.Ptr:
|
||||
// Represent slice types as the value itself.
|
||||
switch rv.Type().Elem().Kind() {
|
||||
case reflect.Slice:
|
||||
if rv.IsNil() {
|
||||
v = reflect.Zero(rv.Type().Elem()).Interface()
|
||||
} else {
|
||||
v = rv.Elem().Interface()
|
||||
}
|
||||
}
|
||||
}
|
||||
return v
|
||||
}
|
||||
|
||||
// extensionAsStorageType converts an value in the API type as the storage type.
|
||||
// See Extension.value.
|
||||
func extensionAsStorageType(v interface{}) interface{} {
|
||||
switch rv := reflect.ValueOf(v); rv.Kind() {
|
||||
case reflect.Ptr:
|
||||
// Represent slice types as the value itself.
|
||||
switch rv.Type().Elem().Kind() {
|
||||
case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
|
||||
if rv.IsNil() {
|
||||
v = reflect.Zero(rv.Type().Elem()).Interface()
|
||||
} else {
|
||||
v = rv.Elem().Interface()
|
||||
}
|
||||
}
|
||||
case reflect.Slice:
|
||||
// Represent slice types as a pointer to the value.
|
||||
if rv.Type().Elem().Kind() != reflect.Uint8 {
|
||||
rv2 := reflect.New(rv.Type())
|
||||
rv2.Elem().Set(rv)
|
||||
v = rv2.Interface()
|
||||
}
|
||||
}
|
||||
return v
|
||||
}
|
||||
|
|
@ -0,0 +1,965 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
/*
|
||||
Package proto converts data structures to and from the wire format of
|
||||
protocol buffers. It works in concert with the Go source code generated
|
||||
for .proto files by the protocol compiler.
|
||||
|
||||
A summary of the properties of the protocol buffer interface
|
||||
for a protocol buffer variable v:
|
||||
|
||||
- Names are turned from camel_case to CamelCase for export.
|
||||
- There are no methods on v to set fields; just treat
|
||||
them as structure fields.
|
||||
- There are getters that return a field's value if set,
|
||||
and return the field's default value if unset.
|
||||
The getters work even if the receiver is a nil message.
|
||||
- The zero value for a struct is its correct initialization state.
|
||||
All desired fields must be set before marshaling.
|
||||
- A Reset() method will restore a protobuf struct to its zero state.
|
||||
- Non-repeated fields are pointers to the values; nil means unset.
|
||||
That is, optional or required field int32 f becomes F *int32.
|
||||
- Repeated fields are slices.
|
||||
- Helper functions are available to aid the setting of fields.
|
||||
msg.Foo = proto.String("hello") // set field
|
||||
- Constants are defined to hold the default values of all fields that
|
||||
have them. They have the form Default_StructName_FieldName.
|
||||
Because the getter methods handle defaulted values,
|
||||
direct use of these constants should be rare.
|
||||
- Enums are given type names and maps from names to values.
|
||||
Enum values are prefixed by the enclosing message's name, or by the
|
||||
enum's type name if it is a top-level enum. Enum types have a String
|
||||
method, and a Enum method to assist in message construction.
|
||||
- Nested messages, groups and enums have type names prefixed with the name of
|
||||
the surrounding message type.
|
||||
- Extensions are given descriptor names that start with E_,
|
||||
followed by an underscore-delimited list of the nested messages
|
||||
that contain it (if any) followed by the CamelCased name of the
|
||||
extension field itself. HasExtension, ClearExtension, GetExtension
|
||||
and SetExtension are functions for manipulating extensions.
|
||||
- Oneof field sets are given a single field in their message,
|
||||
with distinguished wrapper types for each possible field value.
|
||||
- Marshal and Unmarshal are functions to encode and decode the wire format.
|
||||
|
||||
When the .proto file specifies `syntax="proto3"`, there are some differences:
|
||||
|
||||
- Non-repeated fields of non-message type are values instead of pointers.
|
||||
- Enum types do not get an Enum method.
|
||||
|
||||
The simplest way to describe this is to see an example.
|
||||
Given file test.proto, containing
|
||||
|
||||
package example;
|
||||
|
||||
enum FOO { X = 17; }
|
||||
|
||||
message Test {
|
||||
required string label = 1;
|
||||
optional int32 type = 2 [default=77];
|
||||
repeated int64 reps = 3;
|
||||
optional group OptionalGroup = 4 {
|
||||
required string RequiredField = 5;
|
||||
}
|
||||
oneof union {
|
||||
int32 number = 6;
|
||||
string name = 7;
|
||||
}
|
||||
}
|
||||
|
||||
The resulting file, test.pb.go, is:
|
||||
|
||||
package example
|
||||
|
||||
import proto "github.com/golang/protobuf/proto"
|
||||
import math "math"
|
||||
|
||||
type FOO int32
|
||||
const (
|
||||
FOO_X FOO = 17
|
||||
)
|
||||
var FOO_name = map[int32]string{
|
||||
17: "X",
|
||||
}
|
||||
var FOO_value = map[string]int32{
|
||||
"X": 17,
|
||||
}
|
||||
|
||||
func (x FOO) Enum() *FOO {
|
||||
p := new(FOO)
|
||||
*p = x
|
||||
return p
|
||||
}
|
||||
func (x FOO) String() string {
|
||||
return proto.EnumName(FOO_name, int32(x))
|
||||
}
|
||||
func (x *FOO) UnmarshalJSON(data []byte) error {
|
||||
value, err := proto.UnmarshalJSONEnum(FOO_value, data)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
*x = FOO(value)
|
||||
return nil
|
||||
}
|
||||
|
||||
type Test struct {
|
||||
Label *string `protobuf:"bytes,1,req,name=label" json:"label,omitempty"`
|
||||
Type *int32 `protobuf:"varint,2,opt,name=type,def=77" json:"type,omitempty"`
|
||||
Reps []int64 `protobuf:"varint,3,rep,name=reps" json:"reps,omitempty"`
|
||||
Optionalgroup *Test_OptionalGroup `protobuf:"group,4,opt,name=OptionalGroup" json:"optionalgroup,omitempty"`
|
||||
// Types that are valid to be assigned to Union:
|
||||
// *Test_Number
|
||||
// *Test_Name
|
||||
Union isTest_Union `protobuf_oneof:"union"`
|
||||
XXX_unrecognized []byte `json:"-"`
|
||||
}
|
||||
func (m *Test) Reset() { *m = Test{} }
|
||||
func (m *Test) String() string { return proto.CompactTextString(m) }
|
||||
func (*Test) ProtoMessage() {}
|
||||
|
||||
type isTest_Union interface {
|
||||
isTest_Union()
|
||||
}
|
||||
|
||||
type Test_Number struct {
|
||||
Number int32 `protobuf:"varint,6,opt,name=number"`
|
||||
}
|
||||
type Test_Name struct {
|
||||
Name string `protobuf:"bytes,7,opt,name=name"`
|
||||
}
|
||||
|
||||
func (*Test_Number) isTest_Union() {}
|
||||
func (*Test_Name) isTest_Union() {}
|
||||
|
||||
func (m *Test) GetUnion() isTest_Union {
|
||||
if m != nil {
|
||||
return m.Union
|
||||
}
|
||||
return nil
|
||||
}
|
||||
const Default_Test_Type int32 = 77
|
||||
|
||||
func (m *Test) GetLabel() string {
|
||||
if m != nil && m.Label != nil {
|
||||
return *m.Label
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *Test) GetType() int32 {
|
||||
if m != nil && m.Type != nil {
|
||||
return *m.Type
|
||||
}
|
||||
return Default_Test_Type
|
||||
}
|
||||
|
||||
func (m *Test) GetOptionalgroup() *Test_OptionalGroup {
|
||||
if m != nil {
|
||||
return m.Optionalgroup
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
type Test_OptionalGroup struct {
|
||||
RequiredField *string `protobuf:"bytes,5,req" json:"RequiredField,omitempty"`
|
||||
}
|
||||
func (m *Test_OptionalGroup) Reset() { *m = Test_OptionalGroup{} }
|
||||
func (m *Test_OptionalGroup) String() string { return proto.CompactTextString(m) }
|
||||
|
||||
func (m *Test_OptionalGroup) GetRequiredField() string {
|
||||
if m != nil && m.RequiredField != nil {
|
||||
return *m.RequiredField
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func (m *Test) GetNumber() int32 {
|
||||
if x, ok := m.GetUnion().(*Test_Number); ok {
|
||||
return x.Number
|
||||
}
|
||||
return 0
|
||||
}
|
||||
|
||||
func (m *Test) GetName() string {
|
||||
if x, ok := m.GetUnion().(*Test_Name); ok {
|
||||
return x.Name
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func init() {
|
||||
proto.RegisterEnum("example.FOO", FOO_name, FOO_value)
|
||||
}
|
||||
|
||||
To create and play with a Test object:
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"log"
|
||||
|
||||
"github.com/golang/protobuf/proto"
|
||||
pb "./example.pb"
|
||||
)
|
||||
|
||||
func main() {
|
||||
test := &pb.Test{
|
||||
Label: proto.String("hello"),
|
||||
Type: proto.Int32(17),
|
||||
Reps: []int64{1, 2, 3},
|
||||
Optionalgroup: &pb.Test_OptionalGroup{
|
||||
RequiredField: proto.String("good bye"),
|
||||
},
|
||||
Union: &pb.Test_Name{"fred"},
|
||||
}
|
||||
data, err := proto.Marshal(test)
|
||||
if err != nil {
|
||||
log.Fatal("marshaling error: ", err)
|
||||
}
|
||||
newTest := &pb.Test{}
|
||||
err = proto.Unmarshal(data, newTest)
|
||||
if err != nil {
|
||||
log.Fatal("unmarshaling error: ", err)
|
||||
}
|
||||
// Now test and newTest contain the same data.
|
||||
if test.GetLabel() != newTest.GetLabel() {
|
||||
log.Fatalf("data mismatch %q != %q", test.GetLabel(), newTest.GetLabel())
|
||||
}
|
||||
// Use a type switch to determine which oneof was set.
|
||||
switch u := test.Union.(type) {
|
||||
case *pb.Test_Number: // u.Number contains the number.
|
||||
case *pb.Test_Name: // u.Name contains the string.
|
||||
}
|
||||
// etc.
|
||||
}
|
||||
*/
|
||||
package proto
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"log"
|
||||
"reflect"
|
||||
"sort"
|
||||
"strconv"
|
||||
"sync"
|
||||
)
|
||||
|
||||
// RequiredNotSetError is an error type returned by either Marshal or Unmarshal.
|
||||
// Marshal reports this when a required field is not initialized.
|
||||
// Unmarshal reports this when a required field is missing from the wire data.
|
||||
type RequiredNotSetError struct{ field string }
|
||||
|
||||
func (e *RequiredNotSetError) Error() string {
|
||||
if e.field == "" {
|
||||
return fmt.Sprintf("proto: required field not set")
|
||||
}
|
||||
return fmt.Sprintf("proto: required field %q not set", e.field)
|
||||
}
|
||||
func (e *RequiredNotSetError) RequiredNotSet() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
type invalidUTF8Error struct{ field string }
|
||||
|
||||
func (e *invalidUTF8Error) Error() string {
|
||||
if e.field == "" {
|
||||
return "proto: invalid UTF-8 detected"
|
||||
}
|
||||
return fmt.Sprintf("proto: field %q contains invalid UTF-8", e.field)
|
||||
}
|
||||
func (e *invalidUTF8Error) InvalidUTF8() bool {
|
||||
return true
|
||||
}
|
||||
|
||||
// errInvalidUTF8 is a sentinel error to identify fields with invalid UTF-8.
|
||||
// This error should not be exposed to the external API as such errors should
|
||||
// be recreated with the field information.
|
||||
var errInvalidUTF8 = &invalidUTF8Error{}
|
||||
|
||||
// isNonFatal reports whether the error is either a RequiredNotSet error
|
||||
// or a InvalidUTF8 error.
|
||||
func isNonFatal(err error) bool {
|
||||
if re, ok := err.(interface{ RequiredNotSet() bool }); ok && re.RequiredNotSet() {
|
||||
return true
|
||||
}
|
||||
if re, ok := err.(interface{ InvalidUTF8() bool }); ok && re.InvalidUTF8() {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
type nonFatal struct{ E error }
|
||||
|
||||
// Merge merges err into nf and reports whether it was successful.
|
||||
// Otherwise it returns false for any fatal non-nil errors.
|
||||
func (nf *nonFatal) Merge(err error) (ok bool) {
|
||||
if err == nil {
|
||||
return true // not an error
|
||||
}
|
||||
if !isNonFatal(err) {
|
||||
return false // fatal error
|
||||
}
|
||||
if nf.E == nil {
|
||||
nf.E = err // store first instance of non-fatal error
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Message is implemented by generated protocol buffer messages.
|
||||
type Message interface {
|
||||
Reset()
|
||||
String() string
|
||||
ProtoMessage()
|
||||
}
|
||||
|
||||
// A Buffer is a buffer manager for marshaling and unmarshaling
|
||||
// protocol buffers. It may be reused between invocations to
|
||||
// reduce memory usage. It is not necessary to use a Buffer;
|
||||
// the global functions Marshal and Unmarshal create a
|
||||
// temporary Buffer and are fine for most applications.
|
||||
type Buffer struct {
|
||||
buf []byte // encode/decode byte stream
|
||||
index int // read point
|
||||
|
||||
deterministic bool
|
||||
}
|
||||
|
||||
// NewBuffer allocates a new Buffer and initializes its internal data to
|
||||
// the contents of the argument slice.
|
||||
func NewBuffer(e []byte) *Buffer {
|
||||
return &Buffer{buf: e}
|
||||
}
|
||||
|
||||
// Reset resets the Buffer, ready for marshaling a new protocol buffer.
|
||||
func (p *Buffer) Reset() {
|
||||
p.buf = p.buf[0:0] // for reading/writing
|
||||
p.index = 0 // for reading
|
||||
}
|
||||
|
||||
// SetBuf replaces the internal buffer with the slice,
|
||||
// ready for unmarshaling the contents of the slice.
|
||||
func (p *Buffer) SetBuf(s []byte) {
|
||||
p.buf = s
|
||||
p.index = 0
|
||||
}
|
||||
|
||||
// Bytes returns the contents of the Buffer.
|
||||
func (p *Buffer) Bytes() []byte { return p.buf }
|
||||
|
||||
// SetDeterministic sets whether to use deterministic serialization.
|
||||
//
|
||||
// Deterministic serialization guarantees that for a given binary, equal
|
||||
// messages will always be serialized to the same bytes. This implies:
|
||||
//
|
||||
// - Repeated serialization of a message will return the same bytes.
|
||||
// - Different processes of the same binary (which may be executing on
|
||||
// different machines) will serialize equal messages to the same bytes.
|
||||
//
|
||||
// Note that the deterministic serialization is NOT canonical across
|
||||
// languages. It is not guaranteed to remain stable over time. It is unstable
|
||||
// across different builds with schema changes due to unknown fields.
|
||||
// Users who need canonical serialization (e.g., persistent storage in a
|
||||
// canonical form, fingerprinting, etc.) should define their own
|
||||
// canonicalization specification and implement their own serializer rather
|
||||
// than relying on this API.
|
||||
//
|
||||
// If deterministic serialization is requested, map entries will be sorted
|
||||
// by keys in lexographical order. This is an implementation detail and
|
||||
// subject to change.
|
||||
func (p *Buffer) SetDeterministic(deterministic bool) {
|
||||
p.deterministic = deterministic
|
||||
}
|
||||
|
||||
/*
|
||||
* Helper routines for simplifying the creation of optional fields of basic type.
|
||||
*/
|
||||
|
||||
// Bool is a helper routine that allocates a new bool value
|
||||
// to store v and returns a pointer to it.
|
||||
func Bool(v bool) *bool {
|
||||
return &v
|
||||
}
|
||||
|
||||
// Int32 is a helper routine that allocates a new int32 value
|
||||
// to store v and returns a pointer to it.
|
||||
func Int32(v int32) *int32 {
|
||||
return &v
|
||||
}
|
||||
|
||||
// Int is a helper routine that allocates a new int32 value
|
||||
// to store v and returns a pointer to it, but unlike Int32
|
||||
// its argument value is an int.
|
||||
func Int(v int) *int32 {
|
||||
p := new(int32)
|
||||
*p = int32(v)
|
||||
return p
|
||||
}
|
||||
|
||||
// Int64 is a helper routine that allocates a new int64 value
|
||||
// to store v and returns a pointer to it.
|
||||
func Int64(v int64) *int64 {
|
||||
return &v
|
||||
}
|
||||
|
||||
// Float32 is a helper routine that allocates a new float32 value
|
||||
// to store v and returns a pointer to it.
|
||||
func Float32(v float32) *float32 {
|
||||
return &v
|
||||
}
|
||||
|
||||
// Float64 is a helper routine that allocates a new float64 value
|
||||
// to store v and returns a pointer to it.
|
||||
func Float64(v float64) *float64 {
|
||||
return &v
|
||||
}
|
||||
|
||||
// Uint32 is a helper routine that allocates a new uint32 value
|
||||
// to store v and returns a pointer to it.
|
||||
func Uint32(v uint32) *uint32 {
|
||||
return &v
|
||||
}
|
||||
|
||||
// Uint64 is a helper routine that allocates a new uint64 value
|
||||
// to store v and returns a pointer to it.
|
||||
func Uint64(v uint64) *uint64 {
|
||||
return &v
|
||||
}
|
||||
|
||||
// String is a helper routine that allocates a new string value
|
||||
// to store v and returns a pointer to it.
|
||||
func String(v string) *string {
|
||||
return &v
|
||||
}
|
||||
|
||||
// EnumName is a helper function to simplify printing protocol buffer enums
|
||||
// by name. Given an enum map and a value, it returns a useful string.
|
||||
func EnumName(m map[int32]string, v int32) string {
|
||||
s, ok := m[v]
|
||||
if ok {
|
||||
return s
|
||||
}
|
||||
return strconv.Itoa(int(v))
|
||||
}
|
||||
|
||||
// UnmarshalJSONEnum is a helper function to simplify recovering enum int values
|
||||
// from their JSON-encoded representation. Given a map from the enum's symbolic
|
||||
// names to its int values, and a byte buffer containing the JSON-encoded
|
||||
// value, it returns an int32 that can be cast to the enum type by the caller.
|
||||
//
|
||||
// The function can deal with both JSON representations, numeric and symbolic.
|
||||
func UnmarshalJSONEnum(m map[string]int32, data []byte, enumName string) (int32, error) {
|
||||
if data[0] == '"' {
|
||||
// New style: enums are strings.
|
||||
var repr string
|
||||
if err := json.Unmarshal(data, &repr); err != nil {
|
||||
return -1, err
|
||||
}
|
||||
val, ok := m[repr]
|
||||
if !ok {
|
||||
return 0, fmt.Errorf("unrecognized enum %s value %q", enumName, repr)
|
||||
}
|
||||
return val, nil
|
||||
}
|
||||
// Old style: enums are ints.
|
||||
var val int32
|
||||
if err := json.Unmarshal(data, &val); err != nil {
|
||||
return 0, fmt.Errorf("cannot unmarshal %#q into enum %s", data, enumName)
|
||||
}
|
||||
return val, nil
|
||||
}
|
||||
|
||||
// DebugPrint dumps the encoded data in b in a debugging format with a header
|
||||
// including the string s. Used in testing but made available for general debugging.
|
||||
func (p *Buffer) DebugPrint(s string, b []byte) {
|
||||
var u uint64
|
||||
|
||||
obuf := p.buf
|
||||
index := p.index
|
||||
p.buf = b
|
||||
p.index = 0
|
||||
depth := 0
|
||||
|
||||
fmt.Printf("\n--- %s ---\n", s)
|
||||
|
||||
out:
|
||||
for {
|
||||
for i := 0; i < depth; i++ {
|
||||
fmt.Print(" ")
|
||||
}
|
||||
|
||||
index := p.index
|
||||
if index == len(p.buf) {
|
||||
break
|
||||
}
|
||||
|
||||
op, err := p.DecodeVarint()
|
||||
if err != nil {
|
||||
fmt.Printf("%3d: fetching op err %v\n", index, err)
|
||||
break out
|
||||
}
|
||||
tag := op >> 3
|
||||
wire := op & 7
|
||||
|
||||
switch wire {
|
||||
default:
|
||||
fmt.Printf("%3d: t=%3d unknown wire=%d\n",
|
||||
index, tag, wire)
|
||||
break out
|
||||
|
||||
case WireBytes:
|
||||
var r []byte
|
||||
|
||||
r, err = p.DecodeRawBytes(false)
|
||||
if err != nil {
|
||||
break out
|
||||
}
|
||||
fmt.Printf("%3d: t=%3d bytes [%d]", index, tag, len(r))
|
||||
if len(r) <= 6 {
|
||||
for i := 0; i < len(r); i++ {
|
||||
fmt.Printf(" %.2x", r[i])
|
||||
}
|
||||
} else {
|
||||
for i := 0; i < 3; i++ {
|
||||
fmt.Printf(" %.2x", r[i])
|
||||
}
|
||||
fmt.Printf(" ..")
|
||||
for i := len(r) - 3; i < len(r); i++ {
|
||||
fmt.Printf(" %.2x", r[i])
|
||||
}
|
||||
}
|
||||
fmt.Printf("\n")
|
||||
|
||||
case WireFixed32:
|
||||
u, err = p.DecodeFixed32()
|
||||
if err != nil {
|
||||
fmt.Printf("%3d: t=%3d fix32 err %v\n", index, tag, err)
|
||||
break out
|
||||
}
|
||||
fmt.Printf("%3d: t=%3d fix32 %d\n", index, tag, u)
|
||||
|
||||
case WireFixed64:
|
||||
u, err = p.DecodeFixed64()
|
||||
if err != nil {
|
||||
fmt.Printf("%3d: t=%3d fix64 err %v\n", index, tag, err)
|
||||
break out
|
||||
}
|
||||
fmt.Printf("%3d: t=%3d fix64 %d\n", index, tag, u)
|
||||
|
||||
case WireVarint:
|
||||
u, err = p.DecodeVarint()
|
||||
if err != nil {
|
||||
fmt.Printf("%3d: t=%3d varint err %v\n", index, tag, err)
|
||||
break out
|
||||
}
|
||||
fmt.Printf("%3d: t=%3d varint %d\n", index, tag, u)
|
||||
|
||||
case WireStartGroup:
|
||||
fmt.Printf("%3d: t=%3d start\n", index, tag)
|
||||
depth++
|
||||
|
||||
case WireEndGroup:
|
||||
depth--
|
||||
fmt.Printf("%3d: t=%3d end\n", index, tag)
|
||||
}
|
||||
}
|
||||
|
||||
if depth != 0 {
|
||||
fmt.Printf("%3d: start-end not balanced %d\n", p.index, depth)
|
||||
}
|
||||
fmt.Printf("\n")
|
||||
|
||||
p.buf = obuf
|
||||
p.index = index
|
||||
}
|
||||
|
||||
// SetDefaults sets unset protocol buffer fields to their default values.
|
||||
// It only modifies fields that are both unset and have defined defaults.
|
||||
// It recursively sets default values in any non-nil sub-messages.
|
||||
func SetDefaults(pb Message) {
|
||||
setDefaults(reflect.ValueOf(pb), true, false)
|
||||
}
|
||||
|
||||
// v is a pointer to a struct.
|
||||
func setDefaults(v reflect.Value, recur, zeros bool) {
|
||||
v = v.Elem()
|
||||
|
||||
defaultMu.RLock()
|
||||
dm, ok := defaults[v.Type()]
|
||||
defaultMu.RUnlock()
|
||||
if !ok {
|
||||
dm = buildDefaultMessage(v.Type())
|
||||
defaultMu.Lock()
|
||||
defaults[v.Type()] = dm
|
||||
defaultMu.Unlock()
|
||||
}
|
||||
|
||||
for _, sf := range dm.scalars {
|
||||
f := v.Field(sf.index)
|
||||
if !f.IsNil() {
|
||||
// field already set
|
||||
continue
|
||||
}
|
||||
dv := sf.value
|
||||
if dv == nil && !zeros {
|
||||
// no explicit default, and don't want to set zeros
|
||||
continue
|
||||
}
|
||||
fptr := f.Addr().Interface() // **T
|
||||
// TODO: Consider batching the allocations we do here.
|
||||
switch sf.kind {
|
||||
case reflect.Bool:
|
||||
b := new(bool)
|
||||
if dv != nil {
|
||||
*b = dv.(bool)
|
||||
}
|
||||
*(fptr.(**bool)) = b
|
||||
case reflect.Float32:
|
||||
f := new(float32)
|
||||
if dv != nil {
|
||||
*f = dv.(float32)
|
||||
}
|
||||
*(fptr.(**float32)) = f
|
||||
case reflect.Float64:
|
||||
f := new(float64)
|
||||
if dv != nil {
|
||||
*f = dv.(float64)
|
||||
}
|
||||
*(fptr.(**float64)) = f
|
||||
case reflect.Int32:
|
||||
// might be an enum
|
||||
if ft := f.Type(); ft != int32PtrType {
|
||||
// enum
|
||||
f.Set(reflect.New(ft.Elem()))
|
||||
if dv != nil {
|
||||
f.Elem().SetInt(int64(dv.(int32)))
|
||||
}
|
||||
} else {
|
||||
// int32 field
|
||||
i := new(int32)
|
||||
if dv != nil {
|
||||
*i = dv.(int32)
|
||||
}
|
||||
*(fptr.(**int32)) = i
|
||||
}
|
||||
case reflect.Int64:
|
||||
i := new(int64)
|
||||
if dv != nil {
|
||||
*i = dv.(int64)
|
||||
}
|
||||
*(fptr.(**int64)) = i
|
||||
case reflect.String:
|
||||
s := new(string)
|
||||
if dv != nil {
|
||||
*s = dv.(string)
|
||||
}
|
||||
*(fptr.(**string)) = s
|
||||
case reflect.Uint8:
|
||||
// exceptional case: []byte
|
||||
var b []byte
|
||||
if dv != nil {
|
||||
db := dv.([]byte)
|
||||
b = make([]byte, len(db))
|
||||
copy(b, db)
|
||||
} else {
|
||||
b = []byte{}
|
||||
}
|
||||
*(fptr.(*[]byte)) = b
|
||||
case reflect.Uint32:
|
||||
u := new(uint32)
|
||||
if dv != nil {
|
||||
*u = dv.(uint32)
|
||||
}
|
||||
*(fptr.(**uint32)) = u
|
||||
case reflect.Uint64:
|
||||
u := new(uint64)
|
||||
if dv != nil {
|
||||
*u = dv.(uint64)
|
||||
}
|
||||
*(fptr.(**uint64)) = u
|
||||
default:
|
||||
log.Printf("proto: can't set default for field %v (sf.kind=%v)", f, sf.kind)
|
||||
}
|
||||
}
|
||||
|
||||
for _, ni := range dm.nested {
|
||||
f := v.Field(ni)
|
||||
// f is *T or []*T or map[T]*T
|
||||
switch f.Kind() {
|
||||
case reflect.Ptr:
|
||||
if f.IsNil() {
|
||||
continue
|
||||
}
|
||||
setDefaults(f, recur, zeros)
|
||||
|
||||
case reflect.Slice:
|
||||
for i := 0; i < f.Len(); i++ {
|
||||
e := f.Index(i)
|
||||
if e.IsNil() {
|
||||
continue
|
||||
}
|
||||
setDefaults(e, recur, zeros)
|
||||
}
|
||||
|
||||
case reflect.Map:
|
||||
for _, k := range f.MapKeys() {
|
||||
e := f.MapIndex(k)
|
||||
if e.IsNil() {
|
||||
continue
|
||||
}
|
||||
setDefaults(e, recur, zeros)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
// defaults maps a protocol buffer struct type to a slice of the fields,
|
||||
// with its scalar fields set to their proto-declared non-zero default values.
|
||||
defaultMu sync.RWMutex
|
||||
defaults = make(map[reflect.Type]defaultMessage)
|
||||
|
||||
int32PtrType = reflect.TypeOf((*int32)(nil))
|
||||
)
|
||||
|
||||
// defaultMessage represents information about the default values of a message.
|
||||
type defaultMessage struct {
|
||||
scalars []scalarField
|
||||
nested []int // struct field index of nested messages
|
||||
}
|
||||
|
||||
type scalarField struct {
|
||||
index int // struct field index
|
||||
kind reflect.Kind // element type (the T in *T or []T)
|
||||
value interface{} // the proto-declared default value, or nil
|
||||
}
|
||||
|
||||
// t is a struct type.
|
||||
func buildDefaultMessage(t reflect.Type) (dm defaultMessage) {
|
||||
sprop := GetProperties(t)
|
||||
for _, prop := range sprop.Prop {
|
||||
fi, ok := sprop.decoderTags.get(prop.Tag)
|
||||
if !ok {
|
||||
// XXX_unrecognized
|
||||
continue
|
||||
}
|
||||
ft := t.Field(fi).Type
|
||||
|
||||
sf, nested, err := fieldDefault(ft, prop)
|
||||
switch {
|
||||
case err != nil:
|
||||
log.Print(err)
|
||||
case nested:
|
||||
dm.nested = append(dm.nested, fi)
|
||||
case sf != nil:
|
||||
sf.index = fi
|
||||
dm.scalars = append(dm.scalars, *sf)
|
||||
}
|
||||
}
|
||||
|
||||
return dm
|
||||
}
|
||||
|
||||
// fieldDefault returns the scalarField for field type ft.
|
||||
// sf will be nil if the field can not have a default.
|
||||
// nestedMessage will be true if this is a nested message.
|
||||
// Note that sf.index is not set on return.
|
||||
func fieldDefault(ft reflect.Type, prop *Properties) (sf *scalarField, nestedMessage bool, err error) {
|
||||
var canHaveDefault bool
|
||||
switch ft.Kind() {
|
||||
case reflect.Ptr:
|
||||
if ft.Elem().Kind() == reflect.Struct {
|
||||
nestedMessage = true
|
||||
} else {
|
||||
canHaveDefault = true // proto2 scalar field
|
||||
}
|
||||
|
||||
case reflect.Slice:
|
||||
switch ft.Elem().Kind() {
|
||||
case reflect.Ptr:
|
||||
nestedMessage = true // repeated message
|
||||
case reflect.Uint8:
|
||||
canHaveDefault = true // bytes field
|
||||
}
|
||||
|
||||
case reflect.Map:
|
||||
if ft.Elem().Kind() == reflect.Ptr {
|
||||
nestedMessage = true // map with message values
|
||||
}
|
||||
}
|
||||
|
||||
if !canHaveDefault {
|
||||
if nestedMessage {
|
||||
return nil, true, nil
|
||||
}
|
||||
return nil, false, nil
|
||||
}
|
||||
|
||||
// We now know that ft is a pointer or slice.
|
||||
sf = &scalarField{kind: ft.Elem().Kind()}
|
||||
|
||||
// scalar fields without defaults
|
||||
if !prop.HasDefault {
|
||||
return sf, false, nil
|
||||
}
|
||||
|
||||
// a scalar field: either *T or []byte
|
||||
switch ft.Elem().Kind() {
|
||||
case reflect.Bool:
|
||||
x, err := strconv.ParseBool(prop.Default)
|
||||
if err != nil {
|
||||
return nil, false, fmt.Errorf("proto: bad default bool %q: %v", prop.Default, err)
|
||||
}
|
||||
sf.value = x
|
||||
case reflect.Float32:
|
||||
x, err := strconv.ParseFloat(prop.Default, 32)
|
||||
if err != nil {
|
||||
return nil, false, fmt.Errorf("proto: bad default float32 %q: %v", prop.Default, err)
|
||||
}
|
||||
sf.value = float32(x)
|
||||
case reflect.Float64:
|
||||
x, err := strconv.ParseFloat(prop.Default, 64)
|
||||
if err != nil {
|
||||
return nil, false, fmt.Errorf("proto: bad default float64 %q: %v", prop.Default, err)
|
||||
}
|
||||
sf.value = x
|
||||
case reflect.Int32:
|
||||
x, err := strconv.ParseInt(prop.Default, 10, 32)
|
||||
if err != nil {
|
||||
return nil, false, fmt.Errorf("proto: bad default int32 %q: %v", prop.Default, err)
|
||||
}
|
||||
sf.value = int32(x)
|
||||
case reflect.Int64:
|
||||
x, err := strconv.ParseInt(prop.Default, 10, 64)
|
||||
if err != nil {
|
||||
return nil, false, fmt.Errorf("proto: bad default int64 %q: %v", prop.Default, err)
|
||||
}
|
||||
sf.value = x
|
||||
case reflect.String:
|
||||
sf.value = prop.Default
|
||||
case reflect.Uint8:
|
||||
// []byte (not *uint8)
|
||||
sf.value = []byte(prop.Default)
|
||||
case reflect.Uint32:
|
||||
x, err := strconv.ParseUint(prop.Default, 10, 32)
|
||||
if err != nil {
|
||||
return nil, false, fmt.Errorf("proto: bad default uint32 %q: %v", prop.Default, err)
|
||||
}
|
||||
sf.value = uint32(x)
|
||||
case reflect.Uint64:
|
||||
x, err := strconv.ParseUint(prop.Default, 10, 64)
|
||||
if err != nil {
|
||||
return nil, false, fmt.Errorf("proto: bad default uint64 %q: %v", prop.Default, err)
|
||||
}
|
||||
sf.value = x
|
||||
default:
|
||||
return nil, false, fmt.Errorf("proto: unhandled def kind %v", ft.Elem().Kind())
|
||||
}
|
||||
|
||||
return sf, false, nil
|
||||
}
|
||||
|
||||
// mapKeys returns a sort.Interface to be used for sorting the map keys.
|
||||
// Map fields may have key types of non-float scalars, strings and enums.
|
||||
func mapKeys(vs []reflect.Value) sort.Interface {
|
||||
s := mapKeySorter{vs: vs}
|
||||
|
||||
// Type specialization per https://developers.google.com/protocol-buffers/docs/proto#maps.
|
||||
if len(vs) == 0 {
|
||||
return s
|
||||
}
|
||||
switch vs[0].Kind() {
|
||||
case reflect.Int32, reflect.Int64:
|
||||
s.less = func(a, b reflect.Value) bool { return a.Int() < b.Int() }
|
||||
case reflect.Uint32, reflect.Uint64:
|
||||
s.less = func(a, b reflect.Value) bool { return a.Uint() < b.Uint() }
|
||||
case reflect.Bool:
|
||||
s.less = func(a, b reflect.Value) bool { return !a.Bool() && b.Bool() } // false < true
|
||||
case reflect.String:
|
||||
s.less = func(a, b reflect.Value) bool { return a.String() < b.String() }
|
||||
default:
|
||||
panic(fmt.Sprintf("unsupported map key type: %v", vs[0].Kind()))
|
||||
}
|
||||
|
||||
return s
|
||||
}
|
||||
|
||||
type mapKeySorter struct {
|
||||
vs []reflect.Value
|
||||
less func(a, b reflect.Value) bool
|
||||
}
|
||||
|
||||
func (s mapKeySorter) Len() int { return len(s.vs) }
|
||||
func (s mapKeySorter) Swap(i, j int) { s.vs[i], s.vs[j] = s.vs[j], s.vs[i] }
|
||||
func (s mapKeySorter) Less(i, j int) bool {
|
||||
return s.less(s.vs[i], s.vs[j])
|
||||
}
|
||||
|
||||
// isProto3Zero reports whether v is a zero proto3 value.
|
||||
func isProto3Zero(v reflect.Value) bool {
|
||||
switch v.Kind() {
|
||||
case reflect.Bool:
|
||||
return !v.Bool()
|
||||
case reflect.Int32, reflect.Int64:
|
||||
return v.Int() == 0
|
||||
case reflect.Uint32, reflect.Uint64:
|
||||
return v.Uint() == 0
|
||||
case reflect.Float32, reflect.Float64:
|
||||
return v.Float() == 0
|
||||
case reflect.String:
|
||||
return v.String() == ""
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
const (
|
||||
// ProtoPackageIsVersion3 is referenced from generated protocol buffer files
|
||||
// to assert that that code is compatible with this version of the proto package.
|
||||
ProtoPackageIsVersion3 = true
|
||||
|
||||
// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
|
||||
// to assert that that code is compatible with this version of the proto package.
|
||||
ProtoPackageIsVersion2 = true
|
||||
|
||||
// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
|
||||
// to assert that that code is compatible with this version of the proto package.
|
||||
ProtoPackageIsVersion1 = true
|
||||
)
|
||||
|
||||
// InternalMessageInfo is a type used internally by generated .pb.go files.
|
||||
// This type is not intended to be used by non-generated code.
|
||||
// This type is not subject to any compatibility guarantee.
|
||||
type InternalMessageInfo struct {
|
||||
marshal *marshalInfo
|
||||
unmarshal *unmarshalInfo
|
||||
merge *mergeInfo
|
||||
discard *discardInfo
|
||||
}
|
||||
|
|
@ -0,0 +1,181 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
/*
|
||||
* Support for message sets.
|
||||
*/
|
||||
|
||||
import (
|
||||
"errors"
|
||||
)
|
||||
|
||||
// errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
|
||||
// A message type ID is required for storing a protocol buffer in a message set.
|
||||
var errNoMessageTypeID = errors.New("proto does not have a message type ID")
|
||||
|
||||
// The first two types (_MessageSet_Item and messageSet)
|
||||
// model what the protocol compiler produces for the following protocol message:
|
||||
// message MessageSet {
|
||||
// repeated group Item = 1 {
|
||||
// required int32 type_id = 2;
|
||||
// required string message = 3;
|
||||
// };
|
||||
// }
|
||||
// That is the MessageSet wire format. We can't use a proto to generate these
|
||||
// because that would introduce a circular dependency between it and this package.
|
||||
|
||||
type _MessageSet_Item struct {
|
||||
TypeId *int32 `protobuf:"varint,2,req,name=type_id"`
|
||||
Message []byte `protobuf:"bytes,3,req,name=message"`
|
||||
}
|
||||
|
||||
type messageSet struct {
|
||||
Item []*_MessageSet_Item `protobuf:"group,1,rep"`
|
||||
XXX_unrecognized []byte
|
||||
// TODO: caching?
|
||||
}
|
||||
|
||||
// Make sure messageSet is a Message.
|
||||
var _ Message = (*messageSet)(nil)
|
||||
|
||||
// messageTypeIder is an interface satisfied by a protocol buffer type
|
||||
// that may be stored in a MessageSet.
|
||||
type messageTypeIder interface {
|
||||
MessageTypeId() int32
|
||||
}
|
||||
|
||||
func (ms *messageSet) find(pb Message) *_MessageSet_Item {
|
||||
mti, ok := pb.(messageTypeIder)
|
||||
if !ok {
|
||||
return nil
|
||||
}
|
||||
id := mti.MessageTypeId()
|
||||
for _, item := range ms.Item {
|
||||
if *item.TypeId == id {
|
||||
return item
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (ms *messageSet) Has(pb Message) bool {
|
||||
return ms.find(pb) != nil
|
||||
}
|
||||
|
||||
func (ms *messageSet) Unmarshal(pb Message) error {
|
||||
if item := ms.find(pb); item != nil {
|
||||
return Unmarshal(item.Message, pb)
|
||||
}
|
||||
if _, ok := pb.(messageTypeIder); !ok {
|
||||
return errNoMessageTypeID
|
||||
}
|
||||
return nil // TODO: return error instead?
|
||||
}
|
||||
|
||||
func (ms *messageSet) Marshal(pb Message) error {
|
||||
msg, err := Marshal(pb)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if item := ms.find(pb); item != nil {
|
||||
// reuse existing item
|
||||
item.Message = msg
|
||||
return nil
|
||||
}
|
||||
|
||||
mti, ok := pb.(messageTypeIder)
|
||||
if !ok {
|
||||
return errNoMessageTypeID
|
||||
}
|
||||
|
||||
mtid := mti.MessageTypeId()
|
||||
ms.Item = append(ms.Item, &_MessageSet_Item{
|
||||
TypeId: &mtid,
|
||||
Message: msg,
|
||||
})
|
||||
return nil
|
||||
}
|
||||
|
||||
func (ms *messageSet) Reset() { *ms = messageSet{} }
|
||||
func (ms *messageSet) String() string { return CompactTextString(ms) }
|
||||
func (*messageSet) ProtoMessage() {}
|
||||
|
||||
// Support for the message_set_wire_format message option.
|
||||
|
||||
func skipVarint(buf []byte) []byte {
|
||||
i := 0
|
||||
for ; buf[i]&0x80 != 0; i++ {
|
||||
}
|
||||
return buf[i+1:]
|
||||
}
|
||||
|
||||
// unmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
|
||||
// It is called by Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
|
||||
func unmarshalMessageSet(buf []byte, exts interface{}) error {
|
||||
var m map[int32]Extension
|
||||
switch exts := exts.(type) {
|
||||
case *XXX_InternalExtensions:
|
||||
m = exts.extensionsWrite()
|
||||
case map[int32]Extension:
|
||||
m = exts
|
||||
default:
|
||||
return errors.New("proto: not an extension map")
|
||||
}
|
||||
|
||||
ms := new(messageSet)
|
||||
if err := Unmarshal(buf, ms); err != nil {
|
||||
return err
|
||||
}
|
||||
for _, item := range ms.Item {
|
||||
id := *item.TypeId
|
||||
msg := item.Message
|
||||
|
||||
// Restore wire type and field number varint, plus length varint.
|
||||
// Be careful to preserve duplicate items.
|
||||
b := EncodeVarint(uint64(id)<<3 | WireBytes)
|
||||
if ext, ok := m[id]; ok {
|
||||
// Existing data; rip off the tag and length varint
|
||||
// so we join the new data correctly.
|
||||
// We can assume that ext.enc is set because we are unmarshaling.
|
||||
o := ext.enc[len(b):] // skip wire type and field number
|
||||
_, n := DecodeVarint(o) // calculate length of length varint
|
||||
o = o[n:] // skip length varint
|
||||
msg = append(o, msg...) // join old data and new data
|
||||
}
|
||||
b = append(b, EncodeVarint(uint64(len(msg)))...)
|
||||
b = append(b, msg...)
|
||||
|
||||
m[id] = Extension{enc: b}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,360 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
// +build purego appengine js
|
||||
|
||||
// This file contains an implementation of proto field accesses using package reflect.
|
||||
// It is slower than the code in pointer_unsafe.go but it avoids package unsafe and can
|
||||
// be used on App Engine.
|
||||
|
||||
package proto
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"sync"
|
||||
)
|
||||
|
||||
const unsafeAllowed = false
|
||||
|
||||
// A field identifies a field in a struct, accessible from a pointer.
|
||||
// In this implementation, a field is identified by the sequence of field indices
|
||||
// passed to reflect's FieldByIndex.
|
||||
type field []int
|
||||
|
||||
// toField returns a field equivalent to the given reflect field.
|
||||
func toField(f *reflect.StructField) field {
|
||||
return f.Index
|
||||
}
|
||||
|
||||
// invalidField is an invalid field identifier.
|
||||
var invalidField = field(nil)
|
||||
|
||||
// zeroField is a noop when calling pointer.offset.
|
||||
var zeroField = field([]int{})
|
||||
|
||||
// IsValid reports whether the field identifier is valid.
|
||||
func (f field) IsValid() bool { return f != nil }
|
||||
|
||||
// The pointer type is for the table-driven decoder.
|
||||
// The implementation here uses a reflect.Value of pointer type to
|
||||
// create a generic pointer. In pointer_unsafe.go we use unsafe
|
||||
// instead of reflect to implement the same (but faster) interface.
|
||||
type pointer struct {
|
||||
v reflect.Value
|
||||
}
|
||||
|
||||
// toPointer converts an interface of pointer type to a pointer
|
||||
// that points to the same target.
|
||||
func toPointer(i *Message) pointer {
|
||||
return pointer{v: reflect.ValueOf(*i)}
|
||||
}
|
||||
|
||||
// toAddrPointer converts an interface to a pointer that points to
|
||||
// the interface data.
|
||||
func toAddrPointer(i *interface{}, isptr, deref bool) pointer {
|
||||
v := reflect.ValueOf(*i)
|
||||
u := reflect.New(v.Type())
|
||||
u.Elem().Set(v)
|
||||
if deref {
|
||||
u = u.Elem()
|
||||
}
|
||||
return pointer{v: u}
|
||||
}
|
||||
|
||||
// valToPointer converts v to a pointer. v must be of pointer type.
|
||||
func valToPointer(v reflect.Value) pointer {
|
||||
return pointer{v: v}
|
||||
}
|
||||
|
||||
// offset converts from a pointer to a structure to a pointer to
|
||||
// one of its fields.
|
||||
func (p pointer) offset(f field) pointer {
|
||||
return pointer{v: p.v.Elem().FieldByIndex(f).Addr()}
|
||||
}
|
||||
|
||||
func (p pointer) isNil() bool {
|
||||
return p.v.IsNil()
|
||||
}
|
||||
|
||||
// grow updates the slice s in place to make it one element longer.
|
||||
// s must be addressable.
|
||||
// Returns the (addressable) new element.
|
||||
func grow(s reflect.Value) reflect.Value {
|
||||
n, m := s.Len(), s.Cap()
|
||||
if n < m {
|
||||
s.SetLen(n + 1)
|
||||
} else {
|
||||
s.Set(reflect.Append(s, reflect.Zero(s.Type().Elem())))
|
||||
}
|
||||
return s.Index(n)
|
||||
}
|
||||
|
||||
func (p pointer) toInt64() *int64 {
|
||||
return p.v.Interface().(*int64)
|
||||
}
|
||||
func (p pointer) toInt64Ptr() **int64 {
|
||||
return p.v.Interface().(**int64)
|
||||
}
|
||||
func (p pointer) toInt64Slice() *[]int64 {
|
||||
return p.v.Interface().(*[]int64)
|
||||
}
|
||||
|
||||
var int32ptr = reflect.TypeOf((*int32)(nil))
|
||||
|
||||
func (p pointer) toInt32() *int32 {
|
||||
return p.v.Convert(int32ptr).Interface().(*int32)
|
||||
}
|
||||
|
||||
// The toInt32Ptr/Slice methods don't work because of enums.
|
||||
// Instead, we must use set/get methods for the int32ptr/slice case.
|
||||
/*
|
||||
func (p pointer) toInt32Ptr() **int32 {
|
||||
return p.v.Interface().(**int32)
|
||||
}
|
||||
func (p pointer) toInt32Slice() *[]int32 {
|
||||
return p.v.Interface().(*[]int32)
|
||||
}
|
||||
*/
|
||||
func (p pointer) getInt32Ptr() *int32 {
|
||||
if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
|
||||
// raw int32 type
|
||||
return p.v.Elem().Interface().(*int32)
|
||||
}
|
||||
// an enum
|
||||
return p.v.Elem().Convert(int32PtrType).Interface().(*int32)
|
||||
}
|
||||
func (p pointer) setInt32Ptr(v int32) {
|
||||
// Allocate value in a *int32. Possibly convert that to a *enum.
|
||||
// Then assign it to a **int32 or **enum.
|
||||
// Note: we can convert *int32 to *enum, but we can't convert
|
||||
// **int32 to **enum!
|
||||
p.v.Elem().Set(reflect.ValueOf(&v).Convert(p.v.Type().Elem()))
|
||||
}
|
||||
|
||||
// getInt32Slice copies []int32 from p as a new slice.
|
||||
// This behavior differs from the implementation in pointer_unsafe.go.
|
||||
func (p pointer) getInt32Slice() []int32 {
|
||||
if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
|
||||
// raw int32 type
|
||||
return p.v.Elem().Interface().([]int32)
|
||||
}
|
||||
// an enum
|
||||
// Allocate a []int32, then assign []enum's values into it.
|
||||
// Note: we can't convert []enum to []int32.
|
||||
slice := p.v.Elem()
|
||||
s := make([]int32, slice.Len())
|
||||
for i := 0; i < slice.Len(); i++ {
|
||||
s[i] = int32(slice.Index(i).Int())
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
// setInt32Slice copies []int32 into p as a new slice.
|
||||
// This behavior differs from the implementation in pointer_unsafe.go.
|
||||
func (p pointer) setInt32Slice(v []int32) {
|
||||
if p.v.Type().Elem().Elem() == reflect.TypeOf(int32(0)) {
|
||||
// raw int32 type
|
||||
p.v.Elem().Set(reflect.ValueOf(v))
|
||||
return
|
||||
}
|
||||
// an enum
|
||||
// Allocate a []enum, then assign []int32's values into it.
|
||||
// Note: we can't convert []enum to []int32.
|
||||
slice := reflect.MakeSlice(p.v.Type().Elem(), len(v), cap(v))
|
||||
for i, x := range v {
|
||||
slice.Index(i).SetInt(int64(x))
|
||||
}
|
||||
p.v.Elem().Set(slice)
|
||||
}
|
||||
func (p pointer) appendInt32Slice(v int32) {
|
||||
grow(p.v.Elem()).SetInt(int64(v))
|
||||
}
|
||||
|
||||
func (p pointer) toUint64() *uint64 {
|
||||
return p.v.Interface().(*uint64)
|
||||
}
|
||||
func (p pointer) toUint64Ptr() **uint64 {
|
||||
return p.v.Interface().(**uint64)
|
||||
}
|
||||
func (p pointer) toUint64Slice() *[]uint64 {
|
||||
return p.v.Interface().(*[]uint64)
|
||||
}
|
||||
func (p pointer) toUint32() *uint32 {
|
||||
return p.v.Interface().(*uint32)
|
||||
}
|
||||
func (p pointer) toUint32Ptr() **uint32 {
|
||||
return p.v.Interface().(**uint32)
|
||||
}
|
||||
func (p pointer) toUint32Slice() *[]uint32 {
|
||||
return p.v.Interface().(*[]uint32)
|
||||
}
|
||||
func (p pointer) toBool() *bool {
|
||||
return p.v.Interface().(*bool)
|
||||
}
|
||||
func (p pointer) toBoolPtr() **bool {
|
||||
return p.v.Interface().(**bool)
|
||||
}
|
||||
func (p pointer) toBoolSlice() *[]bool {
|
||||
return p.v.Interface().(*[]bool)
|
||||
}
|
||||
func (p pointer) toFloat64() *float64 {
|
||||
return p.v.Interface().(*float64)
|
||||
}
|
||||
func (p pointer) toFloat64Ptr() **float64 {
|
||||
return p.v.Interface().(**float64)
|
||||
}
|
||||
func (p pointer) toFloat64Slice() *[]float64 {
|
||||
return p.v.Interface().(*[]float64)
|
||||
}
|
||||
func (p pointer) toFloat32() *float32 {
|
||||
return p.v.Interface().(*float32)
|
||||
}
|
||||
func (p pointer) toFloat32Ptr() **float32 {
|
||||
return p.v.Interface().(**float32)
|
||||
}
|
||||
func (p pointer) toFloat32Slice() *[]float32 {
|
||||
return p.v.Interface().(*[]float32)
|
||||
}
|
||||
func (p pointer) toString() *string {
|
||||
return p.v.Interface().(*string)
|
||||
}
|
||||
func (p pointer) toStringPtr() **string {
|
||||
return p.v.Interface().(**string)
|
||||
}
|
||||
func (p pointer) toStringSlice() *[]string {
|
||||
return p.v.Interface().(*[]string)
|
||||
}
|
||||
func (p pointer) toBytes() *[]byte {
|
||||
return p.v.Interface().(*[]byte)
|
||||
}
|
||||
func (p pointer) toBytesSlice() *[][]byte {
|
||||
return p.v.Interface().(*[][]byte)
|
||||
}
|
||||
func (p pointer) toExtensions() *XXX_InternalExtensions {
|
||||
return p.v.Interface().(*XXX_InternalExtensions)
|
||||
}
|
||||
func (p pointer) toOldExtensions() *map[int32]Extension {
|
||||
return p.v.Interface().(*map[int32]Extension)
|
||||
}
|
||||
func (p pointer) getPointer() pointer {
|
||||
return pointer{v: p.v.Elem()}
|
||||
}
|
||||
func (p pointer) setPointer(q pointer) {
|
||||
p.v.Elem().Set(q.v)
|
||||
}
|
||||
func (p pointer) appendPointer(q pointer) {
|
||||
grow(p.v.Elem()).Set(q.v)
|
||||
}
|
||||
|
||||
// getPointerSlice copies []*T from p as a new []pointer.
|
||||
// This behavior differs from the implementation in pointer_unsafe.go.
|
||||
func (p pointer) getPointerSlice() []pointer {
|
||||
if p.v.IsNil() {
|
||||
return nil
|
||||
}
|
||||
n := p.v.Elem().Len()
|
||||
s := make([]pointer, n)
|
||||
for i := 0; i < n; i++ {
|
||||
s[i] = pointer{v: p.v.Elem().Index(i)}
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
// setPointerSlice copies []pointer into p as a new []*T.
|
||||
// This behavior differs from the implementation in pointer_unsafe.go.
|
||||
func (p pointer) setPointerSlice(v []pointer) {
|
||||
if v == nil {
|
||||
p.v.Elem().Set(reflect.New(p.v.Elem().Type()).Elem())
|
||||
return
|
||||
}
|
||||
s := reflect.MakeSlice(p.v.Elem().Type(), 0, len(v))
|
||||
for _, p := range v {
|
||||
s = reflect.Append(s, p.v)
|
||||
}
|
||||
p.v.Elem().Set(s)
|
||||
}
|
||||
|
||||
// getInterfacePointer returns a pointer that points to the
|
||||
// interface data of the interface pointed by p.
|
||||
func (p pointer) getInterfacePointer() pointer {
|
||||
if p.v.Elem().IsNil() {
|
||||
return pointer{v: p.v.Elem()}
|
||||
}
|
||||
return pointer{v: p.v.Elem().Elem().Elem().Field(0).Addr()} // *interface -> interface -> *struct -> struct
|
||||
}
|
||||
|
||||
func (p pointer) asPointerTo(t reflect.Type) reflect.Value {
|
||||
// TODO: check that p.v.Type().Elem() == t?
|
||||
return p.v
|
||||
}
|
||||
|
||||
func atomicLoadUnmarshalInfo(p **unmarshalInfo) *unmarshalInfo {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
return *p
|
||||
}
|
||||
func atomicStoreUnmarshalInfo(p **unmarshalInfo, v *unmarshalInfo) {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
*p = v
|
||||
}
|
||||
func atomicLoadMarshalInfo(p **marshalInfo) *marshalInfo {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
return *p
|
||||
}
|
||||
func atomicStoreMarshalInfo(p **marshalInfo, v *marshalInfo) {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
*p = v
|
||||
}
|
||||
func atomicLoadMergeInfo(p **mergeInfo) *mergeInfo {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
return *p
|
||||
}
|
||||
func atomicStoreMergeInfo(p **mergeInfo, v *mergeInfo) {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
*p = v
|
||||
}
|
||||
func atomicLoadDiscardInfo(p **discardInfo) *discardInfo {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
return *p
|
||||
}
|
||||
func atomicStoreDiscardInfo(p **discardInfo, v *discardInfo) {
|
||||
atomicLock.Lock()
|
||||
defer atomicLock.Unlock()
|
||||
*p = v
|
||||
}
|
||||
|
||||
var atomicLock sync.Mutex
|
||||
|
|
@ -0,0 +1,313 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2012 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
// +build !purego,!appengine,!js
|
||||
|
||||
// This file contains the implementation of the proto field accesses using package unsafe.
|
||||
|
||||
package proto
|
||||
|
||||
import (
|
||||
"reflect"
|
||||
"sync/atomic"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
const unsafeAllowed = true
|
||||
|
||||
// A field identifies a field in a struct, accessible from a pointer.
|
||||
// In this implementation, a field is identified by its byte offset from the start of the struct.
|
||||
type field uintptr
|
||||
|
||||
// toField returns a field equivalent to the given reflect field.
|
||||
func toField(f *reflect.StructField) field {
|
||||
return field(f.Offset)
|
||||
}
|
||||
|
||||
// invalidField is an invalid field identifier.
|
||||
const invalidField = ^field(0)
|
||||
|
||||
// zeroField is a noop when calling pointer.offset.
|
||||
const zeroField = field(0)
|
||||
|
||||
// IsValid reports whether the field identifier is valid.
|
||||
func (f field) IsValid() bool {
|
||||
return f != invalidField
|
||||
}
|
||||
|
||||
// The pointer type below is for the new table-driven encoder/decoder.
|
||||
// The implementation here uses unsafe.Pointer to create a generic pointer.
|
||||
// In pointer_reflect.go we use reflect instead of unsafe to implement
|
||||
// the same (but slower) interface.
|
||||
type pointer struct {
|
||||
p unsafe.Pointer
|
||||
}
|
||||
|
||||
// size of pointer
|
||||
var ptrSize = unsafe.Sizeof(uintptr(0))
|
||||
|
||||
// toPointer converts an interface of pointer type to a pointer
|
||||
// that points to the same target.
|
||||
func toPointer(i *Message) pointer {
|
||||
// Super-tricky - read pointer out of data word of interface value.
|
||||
// Saves ~25ns over the equivalent:
|
||||
// return valToPointer(reflect.ValueOf(*i))
|
||||
return pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
|
||||
}
|
||||
|
||||
// toAddrPointer converts an interface to a pointer that points to
|
||||
// the interface data.
|
||||
func toAddrPointer(i *interface{}, isptr, deref bool) (p pointer) {
|
||||
// Super-tricky - read or get the address of data word of interface value.
|
||||
if isptr {
|
||||
// The interface is of pointer type, thus it is a direct interface.
|
||||
// The data word is the pointer data itself. We take its address.
|
||||
p = pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
|
||||
} else {
|
||||
// The interface is not of pointer type. The data word is the pointer
|
||||
// to the data.
|
||||
p = pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
|
||||
}
|
||||
if deref {
|
||||
p.p = *(*unsafe.Pointer)(p.p)
|
||||
}
|
||||
return p
|
||||
}
|
||||
|
||||
// valToPointer converts v to a pointer. v must be of pointer type.
|
||||
func valToPointer(v reflect.Value) pointer {
|
||||
return pointer{p: unsafe.Pointer(v.Pointer())}
|
||||
}
|
||||
|
||||
// offset converts from a pointer to a structure to a pointer to
|
||||
// one of its fields.
|
||||
func (p pointer) offset(f field) pointer {
|
||||
// For safety, we should panic if !f.IsValid, however calling panic causes
|
||||
// this to no longer be inlineable, which is a serious performance cost.
|
||||
/*
|
||||
if !f.IsValid() {
|
||||
panic("invalid field")
|
||||
}
|
||||
*/
|
||||
return pointer{p: unsafe.Pointer(uintptr(p.p) + uintptr(f))}
|
||||
}
|
||||
|
||||
func (p pointer) isNil() bool {
|
||||
return p.p == nil
|
||||
}
|
||||
|
||||
func (p pointer) toInt64() *int64 {
|
||||
return (*int64)(p.p)
|
||||
}
|
||||
func (p pointer) toInt64Ptr() **int64 {
|
||||
return (**int64)(p.p)
|
||||
}
|
||||
func (p pointer) toInt64Slice() *[]int64 {
|
||||
return (*[]int64)(p.p)
|
||||
}
|
||||
func (p pointer) toInt32() *int32 {
|
||||
return (*int32)(p.p)
|
||||
}
|
||||
|
||||
// See pointer_reflect.go for why toInt32Ptr/Slice doesn't exist.
|
||||
/*
|
||||
func (p pointer) toInt32Ptr() **int32 {
|
||||
return (**int32)(p.p)
|
||||
}
|
||||
func (p pointer) toInt32Slice() *[]int32 {
|
||||
return (*[]int32)(p.p)
|
||||
}
|
||||
*/
|
||||
func (p pointer) getInt32Ptr() *int32 {
|
||||
return *(**int32)(p.p)
|
||||
}
|
||||
func (p pointer) setInt32Ptr(v int32) {
|
||||
*(**int32)(p.p) = &v
|
||||
}
|
||||
|
||||
// getInt32Slice loads a []int32 from p.
|
||||
// The value returned is aliased with the original slice.
|
||||
// This behavior differs from the implementation in pointer_reflect.go.
|
||||
func (p pointer) getInt32Slice() []int32 {
|
||||
return *(*[]int32)(p.p)
|
||||
}
|
||||
|
||||
// setInt32Slice stores a []int32 to p.
|
||||
// The value set is aliased with the input slice.
|
||||
// This behavior differs from the implementation in pointer_reflect.go.
|
||||
func (p pointer) setInt32Slice(v []int32) {
|
||||
*(*[]int32)(p.p) = v
|
||||
}
|
||||
|
||||
// TODO: Can we get rid of appendInt32Slice and use setInt32Slice instead?
|
||||
func (p pointer) appendInt32Slice(v int32) {
|
||||
s := (*[]int32)(p.p)
|
||||
*s = append(*s, v)
|
||||
}
|
||||
|
||||
func (p pointer) toUint64() *uint64 {
|
||||
return (*uint64)(p.p)
|
||||
}
|
||||
func (p pointer) toUint64Ptr() **uint64 {
|
||||
return (**uint64)(p.p)
|
||||
}
|
||||
func (p pointer) toUint64Slice() *[]uint64 {
|
||||
return (*[]uint64)(p.p)
|
||||
}
|
||||
func (p pointer) toUint32() *uint32 {
|
||||
return (*uint32)(p.p)
|
||||
}
|
||||
func (p pointer) toUint32Ptr() **uint32 {
|
||||
return (**uint32)(p.p)
|
||||
}
|
||||
func (p pointer) toUint32Slice() *[]uint32 {
|
||||
return (*[]uint32)(p.p)
|
||||
}
|
||||
func (p pointer) toBool() *bool {
|
||||
return (*bool)(p.p)
|
||||
}
|
||||
func (p pointer) toBoolPtr() **bool {
|
||||
return (**bool)(p.p)
|
||||
}
|
||||
func (p pointer) toBoolSlice() *[]bool {
|
||||
return (*[]bool)(p.p)
|
||||
}
|
||||
func (p pointer) toFloat64() *float64 {
|
||||
return (*float64)(p.p)
|
||||
}
|
||||
func (p pointer) toFloat64Ptr() **float64 {
|
||||
return (**float64)(p.p)
|
||||
}
|
||||
func (p pointer) toFloat64Slice() *[]float64 {
|
||||
return (*[]float64)(p.p)
|
||||
}
|
||||
func (p pointer) toFloat32() *float32 {
|
||||
return (*float32)(p.p)
|
||||
}
|
||||
func (p pointer) toFloat32Ptr() **float32 {
|
||||
return (**float32)(p.p)
|
||||
}
|
||||
func (p pointer) toFloat32Slice() *[]float32 {
|
||||
return (*[]float32)(p.p)
|
||||
}
|
||||
func (p pointer) toString() *string {
|
||||
return (*string)(p.p)
|
||||
}
|
||||
func (p pointer) toStringPtr() **string {
|
||||
return (**string)(p.p)
|
||||
}
|
||||
func (p pointer) toStringSlice() *[]string {
|
||||
return (*[]string)(p.p)
|
||||
}
|
||||
func (p pointer) toBytes() *[]byte {
|
||||
return (*[]byte)(p.p)
|
||||
}
|
||||
func (p pointer) toBytesSlice() *[][]byte {
|
||||
return (*[][]byte)(p.p)
|
||||
}
|
||||
func (p pointer) toExtensions() *XXX_InternalExtensions {
|
||||
return (*XXX_InternalExtensions)(p.p)
|
||||
}
|
||||
func (p pointer) toOldExtensions() *map[int32]Extension {
|
||||
return (*map[int32]Extension)(p.p)
|
||||
}
|
||||
|
||||
// getPointerSlice loads []*T from p as a []pointer.
|
||||
// The value returned is aliased with the original slice.
|
||||
// This behavior differs from the implementation in pointer_reflect.go.
|
||||
func (p pointer) getPointerSlice() []pointer {
|
||||
// Super-tricky - p should point to a []*T where T is a
|
||||
// message type. We load it as []pointer.
|
||||
return *(*[]pointer)(p.p)
|
||||
}
|
||||
|
||||
// setPointerSlice stores []pointer into p as a []*T.
|
||||
// The value set is aliased with the input slice.
|
||||
// This behavior differs from the implementation in pointer_reflect.go.
|
||||
func (p pointer) setPointerSlice(v []pointer) {
|
||||
// Super-tricky - p should point to a []*T where T is a
|
||||
// message type. We store it as []pointer.
|
||||
*(*[]pointer)(p.p) = v
|
||||
}
|
||||
|
||||
// getPointer loads the pointer at p and returns it.
|
||||
func (p pointer) getPointer() pointer {
|
||||
return pointer{p: *(*unsafe.Pointer)(p.p)}
|
||||
}
|
||||
|
||||
// setPointer stores the pointer q at p.
|
||||
func (p pointer) setPointer(q pointer) {
|
||||
*(*unsafe.Pointer)(p.p) = q.p
|
||||
}
|
||||
|
||||
// append q to the slice pointed to by p.
|
||||
func (p pointer) appendPointer(q pointer) {
|
||||
s := (*[]unsafe.Pointer)(p.p)
|
||||
*s = append(*s, q.p)
|
||||
}
|
||||
|
||||
// getInterfacePointer returns a pointer that points to the
|
||||
// interface data of the interface pointed by p.
|
||||
func (p pointer) getInterfacePointer() pointer {
|
||||
// Super-tricky - read pointer out of data word of interface value.
|
||||
return pointer{p: (*(*[2]unsafe.Pointer)(p.p))[1]}
|
||||
}
|
||||
|
||||
// asPointerTo returns a reflect.Value that is a pointer to an
|
||||
// object of type t stored at p.
|
||||
func (p pointer) asPointerTo(t reflect.Type) reflect.Value {
|
||||
return reflect.NewAt(t, p.p)
|
||||
}
|
||||
|
||||
func atomicLoadUnmarshalInfo(p **unmarshalInfo) *unmarshalInfo {
|
||||
return (*unmarshalInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
|
||||
}
|
||||
func atomicStoreUnmarshalInfo(p **unmarshalInfo, v *unmarshalInfo) {
|
||||
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
|
||||
}
|
||||
func atomicLoadMarshalInfo(p **marshalInfo) *marshalInfo {
|
||||
return (*marshalInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
|
||||
}
|
||||
func atomicStoreMarshalInfo(p **marshalInfo, v *marshalInfo) {
|
||||
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
|
||||
}
|
||||
func atomicLoadMergeInfo(p **mergeInfo) *mergeInfo {
|
||||
return (*mergeInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
|
||||
}
|
||||
func atomicStoreMergeInfo(p **mergeInfo, v *mergeInfo) {
|
||||
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
|
||||
}
|
||||
func atomicLoadDiscardInfo(p **discardInfo) *discardInfo {
|
||||
return (*discardInfo)(atomic.LoadPointer((*unsafe.Pointer)(unsafe.Pointer(p))))
|
||||
}
|
||||
func atomicStoreDiscardInfo(p **discardInfo, v *discardInfo) {
|
||||
atomic.StorePointer((*unsafe.Pointer)(unsafe.Pointer(p)), unsafe.Pointer(v))
|
||||
}
|
||||
|
|
@ -0,0 +1,544 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
/*
|
||||
* Routines for encoding data into the wire format for protocol buffers.
|
||||
*/
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"log"
|
||||
"reflect"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
"sync"
|
||||
)
|
||||
|
||||
const debug bool = false
|
||||
|
||||
// Constants that identify the encoding of a value on the wire.
|
||||
const (
|
||||
WireVarint = 0
|
||||
WireFixed64 = 1
|
||||
WireBytes = 2
|
||||
WireStartGroup = 3
|
||||
WireEndGroup = 4
|
||||
WireFixed32 = 5
|
||||
)
|
||||
|
||||
// tagMap is an optimization over map[int]int for typical protocol buffer
|
||||
// use-cases. Encoded protocol buffers are often in tag order with small tag
|
||||
// numbers.
|
||||
type tagMap struct {
|
||||
fastTags []int
|
||||
slowTags map[int]int
|
||||
}
|
||||
|
||||
// tagMapFastLimit is the upper bound on the tag number that will be stored in
|
||||
// the tagMap slice rather than its map.
|
||||
const tagMapFastLimit = 1024
|
||||
|
||||
func (p *tagMap) get(t int) (int, bool) {
|
||||
if t > 0 && t < tagMapFastLimit {
|
||||
if t >= len(p.fastTags) {
|
||||
return 0, false
|
||||
}
|
||||
fi := p.fastTags[t]
|
||||
return fi, fi >= 0
|
||||
}
|
||||
fi, ok := p.slowTags[t]
|
||||
return fi, ok
|
||||
}
|
||||
|
||||
func (p *tagMap) put(t int, fi int) {
|
||||
if t > 0 && t < tagMapFastLimit {
|
||||
for len(p.fastTags) < t+1 {
|
||||
p.fastTags = append(p.fastTags, -1)
|
||||
}
|
||||
p.fastTags[t] = fi
|
||||
return
|
||||
}
|
||||
if p.slowTags == nil {
|
||||
p.slowTags = make(map[int]int)
|
||||
}
|
||||
p.slowTags[t] = fi
|
||||
}
|
||||
|
||||
// StructProperties represents properties for all the fields of a struct.
|
||||
// decoderTags and decoderOrigNames should only be used by the decoder.
|
||||
type StructProperties struct {
|
||||
Prop []*Properties // properties for each field
|
||||
reqCount int // required count
|
||||
decoderTags tagMap // map from proto tag to struct field number
|
||||
decoderOrigNames map[string]int // map from original name to struct field number
|
||||
order []int // list of struct field numbers in tag order
|
||||
|
||||
// OneofTypes contains information about the oneof fields in this message.
|
||||
// It is keyed by the original name of a field.
|
||||
OneofTypes map[string]*OneofProperties
|
||||
}
|
||||
|
||||
// OneofProperties represents information about a specific field in a oneof.
|
||||
type OneofProperties struct {
|
||||
Type reflect.Type // pointer to generated struct type for this oneof field
|
||||
Field int // struct field number of the containing oneof in the message
|
||||
Prop *Properties
|
||||
}
|
||||
|
||||
// Implement the sorting interface so we can sort the fields in tag order, as recommended by the spec.
|
||||
// See encode.go, (*Buffer).enc_struct.
|
||||
|
||||
func (sp *StructProperties) Len() int { return len(sp.order) }
|
||||
func (sp *StructProperties) Less(i, j int) bool {
|
||||
return sp.Prop[sp.order[i]].Tag < sp.Prop[sp.order[j]].Tag
|
||||
}
|
||||
func (sp *StructProperties) Swap(i, j int) { sp.order[i], sp.order[j] = sp.order[j], sp.order[i] }
|
||||
|
||||
// Properties represents the protocol-specific behavior of a single struct field.
|
||||
type Properties struct {
|
||||
Name string // name of the field, for error messages
|
||||
OrigName string // original name before protocol compiler (always set)
|
||||
JSONName string // name to use for JSON; determined by protoc
|
||||
Wire string
|
||||
WireType int
|
||||
Tag int
|
||||
Required bool
|
||||
Optional bool
|
||||
Repeated bool
|
||||
Packed bool // relevant for repeated primitives only
|
||||
Enum string // set for enum types only
|
||||
proto3 bool // whether this is known to be a proto3 field
|
||||
oneof bool // whether this is a oneof field
|
||||
|
||||
Default string // default value
|
||||
HasDefault bool // whether an explicit default was provided
|
||||
|
||||
stype reflect.Type // set for struct types only
|
||||
sprop *StructProperties // set for struct types only
|
||||
|
||||
mtype reflect.Type // set for map types only
|
||||
MapKeyProp *Properties // set for map types only
|
||||
MapValProp *Properties // set for map types only
|
||||
}
|
||||
|
||||
// String formats the properties in the protobuf struct field tag style.
|
||||
func (p *Properties) String() string {
|
||||
s := p.Wire
|
||||
s += ","
|
||||
s += strconv.Itoa(p.Tag)
|
||||
if p.Required {
|
||||
s += ",req"
|
||||
}
|
||||
if p.Optional {
|
||||
s += ",opt"
|
||||
}
|
||||
if p.Repeated {
|
||||
s += ",rep"
|
||||
}
|
||||
if p.Packed {
|
||||
s += ",packed"
|
||||
}
|
||||
s += ",name=" + p.OrigName
|
||||
if p.JSONName != p.OrigName {
|
||||
s += ",json=" + p.JSONName
|
||||
}
|
||||
if p.proto3 {
|
||||
s += ",proto3"
|
||||
}
|
||||
if p.oneof {
|
||||
s += ",oneof"
|
||||
}
|
||||
if len(p.Enum) > 0 {
|
||||
s += ",enum=" + p.Enum
|
||||
}
|
||||
if p.HasDefault {
|
||||
s += ",def=" + p.Default
|
||||
}
|
||||
return s
|
||||
}
|
||||
|
||||
// Parse populates p by parsing a string in the protobuf struct field tag style.
|
||||
func (p *Properties) Parse(s string) {
|
||||
// "bytes,49,opt,name=foo,def=hello!"
|
||||
fields := strings.Split(s, ",") // breaks def=, but handled below.
|
||||
if len(fields) < 2 {
|
||||
log.Printf("proto: tag has too few fields: %q", s)
|
||||
return
|
||||
}
|
||||
|
||||
p.Wire = fields[0]
|
||||
switch p.Wire {
|
||||
case "varint":
|
||||
p.WireType = WireVarint
|
||||
case "fixed32":
|
||||
p.WireType = WireFixed32
|
||||
case "fixed64":
|
||||
p.WireType = WireFixed64
|
||||
case "zigzag32":
|
||||
p.WireType = WireVarint
|
||||
case "zigzag64":
|
||||
p.WireType = WireVarint
|
||||
case "bytes", "group":
|
||||
p.WireType = WireBytes
|
||||
// no numeric converter for non-numeric types
|
||||
default:
|
||||
log.Printf("proto: tag has unknown wire type: %q", s)
|
||||
return
|
||||
}
|
||||
|
||||
var err error
|
||||
p.Tag, err = strconv.Atoi(fields[1])
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
outer:
|
||||
for i := 2; i < len(fields); i++ {
|
||||
f := fields[i]
|
||||
switch {
|
||||
case f == "req":
|
||||
p.Required = true
|
||||
case f == "opt":
|
||||
p.Optional = true
|
||||
case f == "rep":
|
||||
p.Repeated = true
|
||||
case f == "packed":
|
||||
p.Packed = true
|
||||
case strings.HasPrefix(f, "name="):
|
||||
p.OrigName = f[5:]
|
||||
case strings.HasPrefix(f, "json="):
|
||||
p.JSONName = f[5:]
|
||||
case strings.HasPrefix(f, "enum="):
|
||||
p.Enum = f[5:]
|
||||
case f == "proto3":
|
||||
p.proto3 = true
|
||||
case f == "oneof":
|
||||
p.oneof = true
|
||||
case strings.HasPrefix(f, "def="):
|
||||
p.HasDefault = true
|
||||
p.Default = f[4:] // rest of string
|
||||
if i+1 < len(fields) {
|
||||
// Commas aren't escaped, and def is always last.
|
||||
p.Default += "," + strings.Join(fields[i+1:], ",")
|
||||
break outer
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var protoMessageType = reflect.TypeOf((*Message)(nil)).Elem()
|
||||
|
||||
// setFieldProps initializes the field properties for submessages and maps.
|
||||
func (p *Properties) setFieldProps(typ reflect.Type, f *reflect.StructField, lockGetProp bool) {
|
||||
switch t1 := typ; t1.Kind() {
|
||||
case reflect.Ptr:
|
||||
if t1.Elem().Kind() == reflect.Struct {
|
||||
p.stype = t1.Elem()
|
||||
}
|
||||
|
||||
case reflect.Slice:
|
||||
if t2 := t1.Elem(); t2.Kind() == reflect.Ptr && t2.Elem().Kind() == reflect.Struct {
|
||||
p.stype = t2.Elem()
|
||||
}
|
||||
|
||||
case reflect.Map:
|
||||
p.mtype = t1
|
||||
p.MapKeyProp = &Properties{}
|
||||
p.MapKeyProp.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp)
|
||||
p.MapValProp = &Properties{}
|
||||
vtype := p.mtype.Elem()
|
||||
if vtype.Kind() != reflect.Ptr && vtype.Kind() != reflect.Slice {
|
||||
// The value type is not a message (*T) or bytes ([]byte),
|
||||
// so we need encoders for the pointer to this type.
|
||||
vtype = reflect.PtrTo(vtype)
|
||||
}
|
||||
p.MapValProp.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp)
|
||||
}
|
||||
|
||||
if p.stype != nil {
|
||||
if lockGetProp {
|
||||
p.sprop = GetProperties(p.stype)
|
||||
} else {
|
||||
p.sprop = getPropertiesLocked(p.stype)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var (
|
||||
marshalerType = reflect.TypeOf((*Marshaler)(nil)).Elem()
|
||||
)
|
||||
|
||||
// Init populates the properties from a protocol buffer struct tag.
|
||||
func (p *Properties) Init(typ reflect.Type, name, tag string, f *reflect.StructField) {
|
||||
p.init(typ, name, tag, f, true)
|
||||
}
|
||||
|
||||
func (p *Properties) init(typ reflect.Type, name, tag string, f *reflect.StructField, lockGetProp bool) {
|
||||
// "bytes,49,opt,def=hello!"
|
||||
p.Name = name
|
||||
p.OrigName = name
|
||||
if tag == "" {
|
||||
return
|
||||
}
|
||||
p.Parse(tag)
|
||||
p.setFieldProps(typ, f, lockGetProp)
|
||||
}
|
||||
|
||||
var (
|
||||
propertiesMu sync.RWMutex
|
||||
propertiesMap = make(map[reflect.Type]*StructProperties)
|
||||
)
|
||||
|
||||
// GetProperties returns the list of properties for the type represented by t.
|
||||
// t must represent a generated struct type of a protocol message.
|
||||
func GetProperties(t reflect.Type) *StructProperties {
|
||||
if t.Kind() != reflect.Struct {
|
||||
panic("proto: type must have kind struct")
|
||||
}
|
||||
|
||||
// Most calls to GetProperties in a long-running program will be
|
||||
// retrieving details for types we have seen before.
|
||||
propertiesMu.RLock()
|
||||
sprop, ok := propertiesMap[t]
|
||||
propertiesMu.RUnlock()
|
||||
if ok {
|
||||
return sprop
|
||||
}
|
||||
|
||||
propertiesMu.Lock()
|
||||
sprop = getPropertiesLocked(t)
|
||||
propertiesMu.Unlock()
|
||||
return sprop
|
||||
}
|
||||
|
||||
type (
|
||||
oneofFuncsIface interface {
|
||||
XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
|
||||
}
|
||||
oneofWrappersIface interface {
|
||||
XXX_OneofWrappers() []interface{}
|
||||
}
|
||||
)
|
||||
|
||||
// getPropertiesLocked requires that propertiesMu is held.
|
||||
func getPropertiesLocked(t reflect.Type) *StructProperties {
|
||||
if prop, ok := propertiesMap[t]; ok {
|
||||
return prop
|
||||
}
|
||||
|
||||
prop := new(StructProperties)
|
||||
// in case of recursive protos, fill this in now.
|
||||
propertiesMap[t] = prop
|
||||
|
||||
// build properties
|
||||
prop.Prop = make([]*Properties, t.NumField())
|
||||
prop.order = make([]int, t.NumField())
|
||||
|
||||
for i := 0; i < t.NumField(); i++ {
|
||||
f := t.Field(i)
|
||||
p := new(Properties)
|
||||
name := f.Name
|
||||
p.init(f.Type, name, f.Tag.Get("protobuf"), &f, false)
|
||||
|
||||
oneof := f.Tag.Get("protobuf_oneof") // special case
|
||||
if oneof != "" {
|
||||
// Oneof fields don't use the traditional protobuf tag.
|
||||
p.OrigName = oneof
|
||||
}
|
||||
prop.Prop[i] = p
|
||||
prop.order[i] = i
|
||||
if debug {
|
||||
print(i, " ", f.Name, " ", t.String(), " ")
|
||||
if p.Tag > 0 {
|
||||
print(p.String())
|
||||
}
|
||||
print("\n")
|
||||
}
|
||||
}
|
||||
|
||||
// Re-order prop.order.
|
||||
sort.Sort(prop)
|
||||
|
||||
var oots []interface{}
|
||||
switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
|
||||
case oneofFuncsIface:
|
||||
_, _, _, oots = m.XXX_OneofFuncs()
|
||||
case oneofWrappersIface:
|
||||
oots = m.XXX_OneofWrappers()
|
||||
}
|
||||
if len(oots) > 0 {
|
||||
// Interpret oneof metadata.
|
||||
prop.OneofTypes = make(map[string]*OneofProperties)
|
||||
for _, oot := range oots {
|
||||
oop := &OneofProperties{
|
||||
Type: reflect.ValueOf(oot).Type(), // *T
|
||||
Prop: new(Properties),
|
||||
}
|
||||
sft := oop.Type.Elem().Field(0)
|
||||
oop.Prop.Name = sft.Name
|
||||
oop.Prop.Parse(sft.Tag.Get("protobuf"))
|
||||
// There will be exactly one interface field that
|
||||
// this new value is assignable to.
|
||||
for i := 0; i < t.NumField(); i++ {
|
||||
f := t.Field(i)
|
||||
if f.Type.Kind() != reflect.Interface {
|
||||
continue
|
||||
}
|
||||
if !oop.Type.AssignableTo(f.Type) {
|
||||
continue
|
||||
}
|
||||
oop.Field = i
|
||||
break
|
||||
}
|
||||
prop.OneofTypes[oop.Prop.OrigName] = oop
|
||||
}
|
||||
}
|
||||
|
||||
// build required counts
|
||||
// build tags
|
||||
reqCount := 0
|
||||
prop.decoderOrigNames = make(map[string]int)
|
||||
for i, p := range prop.Prop {
|
||||
if strings.HasPrefix(p.Name, "XXX_") {
|
||||
// Internal fields should not appear in tags/origNames maps.
|
||||
// They are handled specially when encoding and decoding.
|
||||
continue
|
||||
}
|
||||
if p.Required {
|
||||
reqCount++
|
||||
}
|
||||
prop.decoderTags.put(p.Tag, i)
|
||||
prop.decoderOrigNames[p.OrigName] = i
|
||||
}
|
||||
prop.reqCount = reqCount
|
||||
|
||||
return prop
|
||||
}
|
||||
|
||||
// A global registry of enum types.
|
||||
// The generated code will register the generated maps by calling RegisterEnum.
|
||||
|
||||
var enumValueMaps = make(map[string]map[string]int32)
|
||||
|
||||
// RegisterEnum is called from the generated code to install the enum descriptor
|
||||
// maps into the global table to aid parsing text format protocol buffers.
|
||||
func RegisterEnum(typeName string, unusedNameMap map[int32]string, valueMap map[string]int32) {
|
||||
if _, ok := enumValueMaps[typeName]; ok {
|
||||
panic("proto: duplicate enum registered: " + typeName)
|
||||
}
|
||||
enumValueMaps[typeName] = valueMap
|
||||
}
|
||||
|
||||
// EnumValueMap returns the mapping from names to integers of the
|
||||
// enum type enumType, or a nil if not found.
|
||||
func EnumValueMap(enumType string) map[string]int32 {
|
||||
return enumValueMaps[enumType]
|
||||
}
|
||||
|
||||
// A registry of all linked message types.
|
||||
// The string is a fully-qualified proto name ("pkg.Message").
|
||||
var (
|
||||
protoTypedNils = make(map[string]Message) // a map from proto names to typed nil pointers
|
||||
protoMapTypes = make(map[string]reflect.Type) // a map from proto names to map types
|
||||
revProtoTypes = make(map[reflect.Type]string)
|
||||
)
|
||||
|
||||
// RegisterType is called from generated code and maps from the fully qualified
|
||||
// proto name to the type (pointer to struct) of the protocol buffer.
|
||||
func RegisterType(x Message, name string) {
|
||||
if _, ok := protoTypedNils[name]; ok {
|
||||
// TODO: Some day, make this a panic.
|
||||
log.Printf("proto: duplicate proto type registered: %s", name)
|
||||
return
|
||||
}
|
||||
t := reflect.TypeOf(x)
|
||||
if v := reflect.ValueOf(x); v.Kind() == reflect.Ptr && v.Pointer() == 0 {
|
||||
// Generated code always calls RegisterType with nil x.
|
||||
// This check is just for extra safety.
|
||||
protoTypedNils[name] = x
|
||||
} else {
|
||||
protoTypedNils[name] = reflect.Zero(t).Interface().(Message)
|
||||
}
|
||||
revProtoTypes[t] = name
|
||||
}
|
||||
|
||||
// RegisterMapType is called from generated code and maps from the fully qualified
|
||||
// proto name to the native map type of the proto map definition.
|
||||
func RegisterMapType(x interface{}, name string) {
|
||||
if reflect.TypeOf(x).Kind() != reflect.Map {
|
||||
panic(fmt.Sprintf("RegisterMapType(%T, %q); want map", x, name))
|
||||
}
|
||||
if _, ok := protoMapTypes[name]; ok {
|
||||
log.Printf("proto: duplicate proto type registered: %s", name)
|
||||
return
|
||||
}
|
||||
t := reflect.TypeOf(x)
|
||||
protoMapTypes[name] = t
|
||||
revProtoTypes[t] = name
|
||||
}
|
||||
|
||||
// MessageName returns the fully-qualified proto name for the given message type.
|
||||
func MessageName(x Message) string {
|
||||
type xname interface {
|
||||
XXX_MessageName() string
|
||||
}
|
||||
if m, ok := x.(xname); ok {
|
||||
return m.XXX_MessageName()
|
||||
}
|
||||
return revProtoTypes[reflect.TypeOf(x)]
|
||||
}
|
||||
|
||||
// MessageType returns the message type (pointer to struct) for a named message.
|
||||
// The type is not guaranteed to implement proto.Message if the name refers to a
|
||||
// map entry.
|
||||
func MessageType(name string) reflect.Type {
|
||||
if t, ok := protoTypedNils[name]; ok {
|
||||
return reflect.TypeOf(t)
|
||||
}
|
||||
return protoMapTypes[name]
|
||||
}
|
||||
|
||||
// A registry of all linked proto files.
|
||||
var (
|
||||
protoFiles = make(map[string][]byte) // file name => fileDescriptor
|
||||
)
|
||||
|
||||
// RegisterFile is called from generated code and maps from the
|
||||
// full file name of a .proto file to its compressed FileDescriptorProto.
|
||||
func RegisterFile(filename string, fileDescriptor []byte) {
|
||||
protoFiles[filename] = fileDescriptor
|
||||
}
|
||||
|
||||
// FileDescriptor returns the compressed FileDescriptorProto for a .proto file.
|
||||
func FileDescriptor(filename string) []byte { return protoFiles[filename] }
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,654 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2016 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strings"
|
||||
"sync"
|
||||
"sync/atomic"
|
||||
)
|
||||
|
||||
// Merge merges the src message into dst.
|
||||
// This assumes that dst and src of the same type and are non-nil.
|
||||
func (a *InternalMessageInfo) Merge(dst, src Message) {
|
||||
mi := atomicLoadMergeInfo(&a.merge)
|
||||
if mi == nil {
|
||||
mi = getMergeInfo(reflect.TypeOf(dst).Elem())
|
||||
atomicStoreMergeInfo(&a.merge, mi)
|
||||
}
|
||||
mi.merge(toPointer(&dst), toPointer(&src))
|
||||
}
|
||||
|
||||
type mergeInfo struct {
|
||||
typ reflect.Type
|
||||
|
||||
initialized int32 // 0: only typ is valid, 1: everything is valid
|
||||
lock sync.Mutex
|
||||
|
||||
fields []mergeFieldInfo
|
||||
unrecognized field // Offset of XXX_unrecognized
|
||||
}
|
||||
|
||||
type mergeFieldInfo struct {
|
||||
field field // Offset of field, guaranteed to be valid
|
||||
|
||||
// isPointer reports whether the value in the field is a pointer.
|
||||
// This is true for the following situations:
|
||||
// * Pointer to struct
|
||||
// * Pointer to basic type (proto2 only)
|
||||
// * Slice (first value in slice header is a pointer)
|
||||
// * String (first value in string header is a pointer)
|
||||
isPointer bool
|
||||
|
||||
// basicWidth reports the width of the field assuming that it is directly
|
||||
// embedded in the struct (as is the case for basic types in proto3).
|
||||
// The possible values are:
|
||||
// 0: invalid
|
||||
// 1: bool
|
||||
// 4: int32, uint32, float32
|
||||
// 8: int64, uint64, float64
|
||||
basicWidth int
|
||||
|
||||
// Where dst and src are pointers to the types being merged.
|
||||
merge func(dst, src pointer)
|
||||
}
|
||||
|
||||
var (
|
||||
mergeInfoMap = map[reflect.Type]*mergeInfo{}
|
||||
mergeInfoLock sync.Mutex
|
||||
)
|
||||
|
||||
func getMergeInfo(t reflect.Type) *mergeInfo {
|
||||
mergeInfoLock.Lock()
|
||||
defer mergeInfoLock.Unlock()
|
||||
mi := mergeInfoMap[t]
|
||||
if mi == nil {
|
||||
mi = &mergeInfo{typ: t}
|
||||
mergeInfoMap[t] = mi
|
||||
}
|
||||
return mi
|
||||
}
|
||||
|
||||
// merge merges src into dst assuming they are both of type *mi.typ.
|
||||
func (mi *mergeInfo) merge(dst, src pointer) {
|
||||
if dst.isNil() {
|
||||
panic("proto: nil destination")
|
||||
}
|
||||
if src.isNil() {
|
||||
return // Nothing to do.
|
||||
}
|
||||
|
||||
if atomic.LoadInt32(&mi.initialized) == 0 {
|
||||
mi.computeMergeInfo()
|
||||
}
|
||||
|
||||
for _, fi := range mi.fields {
|
||||
sfp := src.offset(fi.field)
|
||||
|
||||
// As an optimization, we can avoid the merge function call cost
|
||||
// if we know for sure that the source will have no effect
|
||||
// by checking if it is the zero value.
|
||||
if unsafeAllowed {
|
||||
if fi.isPointer && sfp.getPointer().isNil() { // Could be slice or string
|
||||
continue
|
||||
}
|
||||
if fi.basicWidth > 0 {
|
||||
switch {
|
||||
case fi.basicWidth == 1 && !*sfp.toBool():
|
||||
continue
|
||||
case fi.basicWidth == 4 && *sfp.toUint32() == 0:
|
||||
continue
|
||||
case fi.basicWidth == 8 && *sfp.toUint64() == 0:
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
dfp := dst.offset(fi.field)
|
||||
fi.merge(dfp, sfp)
|
||||
}
|
||||
|
||||
// TODO: Make this faster?
|
||||
out := dst.asPointerTo(mi.typ).Elem()
|
||||
in := src.asPointerTo(mi.typ).Elem()
|
||||
if emIn, err := extendable(in.Addr().Interface()); err == nil {
|
||||
emOut, _ := extendable(out.Addr().Interface())
|
||||
mIn, muIn := emIn.extensionsRead()
|
||||
if mIn != nil {
|
||||
mOut := emOut.extensionsWrite()
|
||||
muIn.Lock()
|
||||
mergeExtension(mOut, mIn)
|
||||
muIn.Unlock()
|
||||
}
|
||||
}
|
||||
|
||||
if mi.unrecognized.IsValid() {
|
||||
if b := *src.offset(mi.unrecognized).toBytes(); len(b) > 0 {
|
||||
*dst.offset(mi.unrecognized).toBytes() = append([]byte(nil), b...)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (mi *mergeInfo) computeMergeInfo() {
|
||||
mi.lock.Lock()
|
||||
defer mi.lock.Unlock()
|
||||
if mi.initialized != 0 {
|
||||
return
|
||||
}
|
||||
t := mi.typ
|
||||
n := t.NumField()
|
||||
|
||||
props := GetProperties(t)
|
||||
for i := 0; i < n; i++ {
|
||||
f := t.Field(i)
|
||||
if strings.HasPrefix(f.Name, "XXX_") {
|
||||
continue
|
||||
}
|
||||
|
||||
mfi := mergeFieldInfo{field: toField(&f)}
|
||||
tf := f.Type
|
||||
|
||||
// As an optimization, we can avoid the merge function call cost
|
||||
// if we know for sure that the source will have no effect
|
||||
// by checking if it is the zero value.
|
||||
if unsafeAllowed {
|
||||
switch tf.Kind() {
|
||||
case reflect.Ptr, reflect.Slice, reflect.String:
|
||||
// As a special case, we assume slices and strings are pointers
|
||||
// since we know that the first field in the SliceSlice or
|
||||
// StringHeader is a data pointer.
|
||||
mfi.isPointer = true
|
||||
case reflect.Bool:
|
||||
mfi.basicWidth = 1
|
||||
case reflect.Int32, reflect.Uint32, reflect.Float32:
|
||||
mfi.basicWidth = 4
|
||||
case reflect.Int64, reflect.Uint64, reflect.Float64:
|
||||
mfi.basicWidth = 8
|
||||
}
|
||||
}
|
||||
|
||||
// Unwrap tf to get at its most basic type.
|
||||
var isPointer, isSlice bool
|
||||
if tf.Kind() == reflect.Slice && tf.Elem().Kind() != reflect.Uint8 {
|
||||
isSlice = true
|
||||
tf = tf.Elem()
|
||||
}
|
||||
if tf.Kind() == reflect.Ptr {
|
||||
isPointer = true
|
||||
tf = tf.Elem()
|
||||
}
|
||||
if isPointer && isSlice && tf.Kind() != reflect.Struct {
|
||||
panic("both pointer and slice for basic type in " + tf.Name())
|
||||
}
|
||||
|
||||
switch tf.Kind() {
|
||||
case reflect.Int32:
|
||||
switch {
|
||||
case isSlice: // E.g., []int32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
// NOTE: toInt32Slice is not defined (see pointer_reflect.go).
|
||||
/*
|
||||
sfsp := src.toInt32Slice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toInt32Slice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []int64{}
|
||||
}
|
||||
}
|
||||
*/
|
||||
sfs := src.getInt32Slice()
|
||||
if sfs != nil {
|
||||
dfs := dst.getInt32Slice()
|
||||
dfs = append(dfs, sfs...)
|
||||
if dfs == nil {
|
||||
dfs = []int32{}
|
||||
}
|
||||
dst.setInt32Slice(dfs)
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *int32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
// NOTE: toInt32Ptr is not defined (see pointer_reflect.go).
|
||||
/*
|
||||
sfpp := src.toInt32Ptr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toInt32Ptr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = Int32(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
*/
|
||||
sfp := src.getInt32Ptr()
|
||||
if sfp != nil {
|
||||
dfp := dst.getInt32Ptr()
|
||||
if dfp == nil {
|
||||
dst.setInt32Ptr(*sfp)
|
||||
} else {
|
||||
*dfp = *sfp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., int32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toInt32(); v != 0 {
|
||||
*dst.toInt32() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Int64:
|
||||
switch {
|
||||
case isSlice: // E.g., []int64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfsp := src.toInt64Slice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toInt64Slice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []int64{}
|
||||
}
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *int64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfpp := src.toInt64Ptr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toInt64Ptr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = Int64(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., int64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toInt64(); v != 0 {
|
||||
*dst.toInt64() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Uint32:
|
||||
switch {
|
||||
case isSlice: // E.g., []uint32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfsp := src.toUint32Slice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toUint32Slice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []uint32{}
|
||||
}
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *uint32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfpp := src.toUint32Ptr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toUint32Ptr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = Uint32(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., uint32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toUint32(); v != 0 {
|
||||
*dst.toUint32() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Uint64:
|
||||
switch {
|
||||
case isSlice: // E.g., []uint64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfsp := src.toUint64Slice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toUint64Slice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []uint64{}
|
||||
}
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *uint64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfpp := src.toUint64Ptr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toUint64Ptr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = Uint64(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., uint64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toUint64(); v != 0 {
|
||||
*dst.toUint64() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Float32:
|
||||
switch {
|
||||
case isSlice: // E.g., []float32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfsp := src.toFloat32Slice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toFloat32Slice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []float32{}
|
||||
}
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *float32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfpp := src.toFloat32Ptr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toFloat32Ptr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = Float32(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., float32
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toFloat32(); v != 0 {
|
||||
*dst.toFloat32() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Float64:
|
||||
switch {
|
||||
case isSlice: // E.g., []float64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfsp := src.toFloat64Slice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toFloat64Slice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []float64{}
|
||||
}
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *float64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfpp := src.toFloat64Ptr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toFloat64Ptr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = Float64(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., float64
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toFloat64(); v != 0 {
|
||||
*dst.toFloat64() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Bool:
|
||||
switch {
|
||||
case isSlice: // E.g., []bool
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfsp := src.toBoolSlice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toBoolSlice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []bool{}
|
||||
}
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *bool
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfpp := src.toBoolPtr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toBoolPtr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = Bool(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., bool
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toBool(); v {
|
||||
*dst.toBool() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.String:
|
||||
switch {
|
||||
case isSlice: // E.g., []string
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfsp := src.toStringSlice()
|
||||
if *sfsp != nil {
|
||||
dfsp := dst.toStringSlice()
|
||||
*dfsp = append(*dfsp, *sfsp...)
|
||||
if *dfsp == nil {
|
||||
*dfsp = []string{}
|
||||
}
|
||||
}
|
||||
}
|
||||
case isPointer: // E.g., *string
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sfpp := src.toStringPtr()
|
||||
if *sfpp != nil {
|
||||
dfpp := dst.toStringPtr()
|
||||
if *dfpp == nil {
|
||||
*dfpp = String(**sfpp)
|
||||
} else {
|
||||
**dfpp = **sfpp
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., string
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
if v := *src.toString(); v != "" {
|
||||
*dst.toString() = v
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Slice:
|
||||
isProto3 := props.Prop[i].proto3
|
||||
switch {
|
||||
case isPointer:
|
||||
panic("bad pointer in byte slice case in " + tf.Name())
|
||||
case tf.Elem().Kind() != reflect.Uint8:
|
||||
panic("bad element kind in byte slice case in " + tf.Name())
|
||||
case isSlice: // E.g., [][]byte
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sbsp := src.toBytesSlice()
|
||||
if *sbsp != nil {
|
||||
dbsp := dst.toBytesSlice()
|
||||
for _, sb := range *sbsp {
|
||||
if sb == nil {
|
||||
*dbsp = append(*dbsp, nil)
|
||||
} else {
|
||||
*dbsp = append(*dbsp, append([]byte{}, sb...))
|
||||
}
|
||||
}
|
||||
if *dbsp == nil {
|
||||
*dbsp = [][]byte{}
|
||||
}
|
||||
}
|
||||
}
|
||||
default: // E.g., []byte
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sbp := src.toBytes()
|
||||
if *sbp != nil {
|
||||
dbp := dst.toBytes()
|
||||
if !isProto3 || len(*sbp) > 0 {
|
||||
*dbp = append([]byte{}, *sbp...)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Struct:
|
||||
switch {
|
||||
case !isPointer:
|
||||
panic(fmt.Sprintf("message field %s without pointer", tf))
|
||||
case isSlice: // E.g., []*pb.T
|
||||
mi := getMergeInfo(tf)
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sps := src.getPointerSlice()
|
||||
if sps != nil {
|
||||
dps := dst.getPointerSlice()
|
||||
for _, sp := range sps {
|
||||
var dp pointer
|
||||
if !sp.isNil() {
|
||||
dp = valToPointer(reflect.New(tf))
|
||||
mi.merge(dp, sp)
|
||||
}
|
||||
dps = append(dps, dp)
|
||||
}
|
||||
if dps == nil {
|
||||
dps = []pointer{}
|
||||
}
|
||||
dst.setPointerSlice(dps)
|
||||
}
|
||||
}
|
||||
default: // E.g., *pb.T
|
||||
mi := getMergeInfo(tf)
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sp := src.getPointer()
|
||||
if !sp.isNil() {
|
||||
dp := dst.getPointer()
|
||||
if dp.isNil() {
|
||||
dp = valToPointer(reflect.New(tf))
|
||||
dst.setPointer(dp)
|
||||
}
|
||||
mi.merge(dp, sp)
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Map:
|
||||
switch {
|
||||
case isPointer || isSlice:
|
||||
panic("bad pointer or slice in map case in " + tf.Name())
|
||||
default: // E.g., map[K]V
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
sm := src.asPointerTo(tf).Elem()
|
||||
if sm.Len() == 0 {
|
||||
return
|
||||
}
|
||||
dm := dst.asPointerTo(tf).Elem()
|
||||
if dm.IsNil() {
|
||||
dm.Set(reflect.MakeMap(tf))
|
||||
}
|
||||
|
||||
switch tf.Elem().Kind() {
|
||||
case reflect.Ptr: // Proto struct (e.g., *T)
|
||||
for _, key := range sm.MapKeys() {
|
||||
val := sm.MapIndex(key)
|
||||
val = reflect.ValueOf(Clone(val.Interface().(Message)))
|
||||
dm.SetMapIndex(key, val)
|
||||
}
|
||||
case reflect.Slice: // E.g. Bytes type (e.g., []byte)
|
||||
for _, key := range sm.MapKeys() {
|
||||
val := sm.MapIndex(key)
|
||||
val = reflect.ValueOf(append([]byte{}, val.Bytes()...))
|
||||
dm.SetMapIndex(key, val)
|
||||
}
|
||||
default: // Basic type (e.g., string)
|
||||
for _, key := range sm.MapKeys() {
|
||||
val := sm.MapIndex(key)
|
||||
dm.SetMapIndex(key, val)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
case reflect.Interface:
|
||||
// Must be oneof field.
|
||||
switch {
|
||||
case isPointer || isSlice:
|
||||
panic("bad pointer or slice in interface case in " + tf.Name())
|
||||
default: // E.g., interface{}
|
||||
// TODO: Make this faster?
|
||||
mfi.merge = func(dst, src pointer) {
|
||||
su := src.asPointerTo(tf).Elem()
|
||||
if !su.IsNil() {
|
||||
du := dst.asPointerTo(tf).Elem()
|
||||
typ := su.Elem().Type()
|
||||
if du.IsNil() || du.Elem().Type() != typ {
|
||||
du.Set(reflect.New(typ.Elem())) // Initialize interface if empty
|
||||
}
|
||||
sv := su.Elem().Elem().Field(0)
|
||||
if sv.Kind() == reflect.Ptr && sv.IsNil() {
|
||||
return
|
||||
}
|
||||
dv := du.Elem().Elem().Field(0)
|
||||
if dv.Kind() == reflect.Ptr && dv.IsNil() {
|
||||
dv.Set(reflect.New(sv.Type().Elem())) // Initialize proto message if empty
|
||||
}
|
||||
switch sv.Type().Kind() {
|
||||
case reflect.Ptr: // Proto struct (e.g., *T)
|
||||
Merge(dv.Interface().(Message), sv.Interface().(Message))
|
||||
case reflect.Slice: // E.g. Bytes type (e.g., []byte)
|
||||
dv.Set(reflect.ValueOf(append([]byte{}, sv.Bytes()...)))
|
||||
default: // Basic type (e.g., string)
|
||||
dv.Set(sv)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
default:
|
||||
panic(fmt.Sprintf("merger not found for type:%s", tf))
|
||||
}
|
||||
mi.fields = append(mi.fields, mfi)
|
||||
}
|
||||
|
||||
mi.unrecognized = invalidField
|
||||
if f, ok := t.FieldByName("XXX_unrecognized"); ok {
|
||||
if f.Type != reflect.TypeOf([]byte{}) {
|
||||
panic("expected XXX_unrecognized to be of type []byte")
|
||||
}
|
||||
mi.unrecognized = toField(&f)
|
||||
}
|
||||
|
||||
atomic.StoreInt32(&mi.initialized, 1)
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -0,0 +1,843 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
// Functions for writing the text protocol buffer format.
|
||||
|
||||
import (
|
||||
"bufio"
|
||||
"bytes"
|
||||
"encoding"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"log"
|
||||
"math"
|
||||
"reflect"
|
||||
"sort"
|
||||
"strings"
|
||||
)
|
||||
|
||||
var (
|
||||
newline = []byte("\n")
|
||||
spaces = []byte(" ")
|
||||
endBraceNewline = []byte("}\n")
|
||||
backslashN = []byte{'\\', 'n'}
|
||||
backslashR = []byte{'\\', 'r'}
|
||||
backslashT = []byte{'\\', 't'}
|
||||
backslashDQ = []byte{'\\', '"'}
|
||||
backslashBS = []byte{'\\', '\\'}
|
||||
posInf = []byte("inf")
|
||||
negInf = []byte("-inf")
|
||||
nan = []byte("nan")
|
||||
)
|
||||
|
||||
type writer interface {
|
||||
io.Writer
|
||||
WriteByte(byte) error
|
||||
}
|
||||
|
||||
// textWriter is an io.Writer that tracks its indentation level.
|
||||
type textWriter struct {
|
||||
ind int
|
||||
complete bool // if the current position is a complete line
|
||||
compact bool // whether to write out as a one-liner
|
||||
w writer
|
||||
}
|
||||
|
||||
func (w *textWriter) WriteString(s string) (n int, err error) {
|
||||
if !strings.Contains(s, "\n") {
|
||||
if !w.compact && w.complete {
|
||||
w.writeIndent()
|
||||
}
|
||||
w.complete = false
|
||||
return io.WriteString(w.w, s)
|
||||
}
|
||||
// WriteString is typically called without newlines, so this
|
||||
// codepath and its copy are rare. We copy to avoid
|
||||
// duplicating all of Write's logic here.
|
||||
return w.Write([]byte(s))
|
||||
}
|
||||
|
||||
func (w *textWriter) Write(p []byte) (n int, err error) {
|
||||
newlines := bytes.Count(p, newline)
|
||||
if newlines == 0 {
|
||||
if !w.compact && w.complete {
|
||||
w.writeIndent()
|
||||
}
|
||||
n, err = w.w.Write(p)
|
||||
w.complete = false
|
||||
return n, err
|
||||
}
|
||||
|
||||
frags := bytes.SplitN(p, newline, newlines+1)
|
||||
if w.compact {
|
||||
for i, frag := range frags {
|
||||
if i > 0 {
|
||||
if err := w.w.WriteByte(' '); err != nil {
|
||||
return n, err
|
||||
}
|
||||
n++
|
||||
}
|
||||
nn, err := w.w.Write(frag)
|
||||
n += nn
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
}
|
||||
return n, nil
|
||||
}
|
||||
|
||||
for i, frag := range frags {
|
||||
if w.complete {
|
||||
w.writeIndent()
|
||||
}
|
||||
nn, err := w.w.Write(frag)
|
||||
n += nn
|
||||
if err != nil {
|
||||
return n, err
|
||||
}
|
||||
if i+1 < len(frags) {
|
||||
if err := w.w.WriteByte('\n'); err != nil {
|
||||
return n, err
|
||||
}
|
||||
n++
|
||||
}
|
||||
}
|
||||
w.complete = len(frags[len(frags)-1]) == 0
|
||||
return n, nil
|
||||
}
|
||||
|
||||
func (w *textWriter) WriteByte(c byte) error {
|
||||
if w.compact && c == '\n' {
|
||||
c = ' '
|
||||
}
|
||||
if !w.compact && w.complete {
|
||||
w.writeIndent()
|
||||
}
|
||||
err := w.w.WriteByte(c)
|
||||
w.complete = c == '\n'
|
||||
return err
|
||||
}
|
||||
|
||||
func (w *textWriter) indent() { w.ind++ }
|
||||
|
||||
func (w *textWriter) unindent() {
|
||||
if w.ind == 0 {
|
||||
log.Print("proto: textWriter unindented too far")
|
||||
return
|
||||
}
|
||||
w.ind--
|
||||
}
|
||||
|
||||
func writeName(w *textWriter, props *Properties) error {
|
||||
if _, err := w.WriteString(props.OrigName); err != nil {
|
||||
return err
|
||||
}
|
||||
if props.Wire != "group" {
|
||||
return w.WriteByte(':')
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func requiresQuotes(u string) bool {
|
||||
// When type URL contains any characters except [0-9A-Za-z./\-]*, it must be quoted.
|
||||
for _, ch := range u {
|
||||
switch {
|
||||
case ch == '.' || ch == '/' || ch == '_':
|
||||
continue
|
||||
case '0' <= ch && ch <= '9':
|
||||
continue
|
||||
case 'A' <= ch && ch <= 'Z':
|
||||
continue
|
||||
case 'a' <= ch && ch <= 'z':
|
||||
continue
|
||||
default:
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// isAny reports whether sv is a google.protobuf.Any message
|
||||
func isAny(sv reflect.Value) bool {
|
||||
type wkt interface {
|
||||
XXX_WellKnownType() string
|
||||
}
|
||||
t, ok := sv.Addr().Interface().(wkt)
|
||||
return ok && t.XXX_WellKnownType() == "Any"
|
||||
}
|
||||
|
||||
// writeProto3Any writes an expanded google.protobuf.Any message.
|
||||
//
|
||||
// It returns (false, nil) if sv value can't be unmarshaled (e.g. because
|
||||
// required messages are not linked in).
|
||||
//
|
||||
// It returns (true, error) when sv was written in expanded format or an error
|
||||
// was encountered.
|
||||
func (tm *TextMarshaler) writeProto3Any(w *textWriter, sv reflect.Value) (bool, error) {
|
||||
turl := sv.FieldByName("TypeUrl")
|
||||
val := sv.FieldByName("Value")
|
||||
if !turl.IsValid() || !val.IsValid() {
|
||||
return true, errors.New("proto: invalid google.protobuf.Any message")
|
||||
}
|
||||
|
||||
b, ok := val.Interface().([]byte)
|
||||
if !ok {
|
||||
return true, errors.New("proto: invalid google.protobuf.Any message")
|
||||
}
|
||||
|
||||
parts := strings.Split(turl.String(), "/")
|
||||
mt := MessageType(parts[len(parts)-1])
|
||||
if mt == nil {
|
||||
return false, nil
|
||||
}
|
||||
m := reflect.New(mt.Elem())
|
||||
if err := Unmarshal(b, m.Interface().(Message)); err != nil {
|
||||
return false, nil
|
||||
}
|
||||
w.Write([]byte("["))
|
||||
u := turl.String()
|
||||
if requiresQuotes(u) {
|
||||
writeString(w, u)
|
||||
} else {
|
||||
w.Write([]byte(u))
|
||||
}
|
||||
if w.compact {
|
||||
w.Write([]byte("]:<"))
|
||||
} else {
|
||||
w.Write([]byte("]: <\n"))
|
||||
w.ind++
|
||||
}
|
||||
if err := tm.writeStruct(w, m.Elem()); err != nil {
|
||||
return true, err
|
||||
}
|
||||
if w.compact {
|
||||
w.Write([]byte("> "))
|
||||
} else {
|
||||
w.ind--
|
||||
w.Write([]byte(">\n"))
|
||||
}
|
||||
return true, nil
|
||||
}
|
||||
|
||||
func (tm *TextMarshaler) writeStruct(w *textWriter, sv reflect.Value) error {
|
||||
if tm.ExpandAny && isAny(sv) {
|
||||
if canExpand, err := tm.writeProto3Any(w, sv); canExpand {
|
||||
return err
|
||||
}
|
||||
}
|
||||
st := sv.Type()
|
||||
sprops := GetProperties(st)
|
||||
for i := 0; i < sv.NumField(); i++ {
|
||||
fv := sv.Field(i)
|
||||
props := sprops.Prop[i]
|
||||
name := st.Field(i).Name
|
||||
|
||||
if name == "XXX_NoUnkeyedLiteral" {
|
||||
continue
|
||||
}
|
||||
|
||||
if strings.HasPrefix(name, "XXX_") {
|
||||
// There are two XXX_ fields:
|
||||
// XXX_unrecognized []byte
|
||||
// XXX_extensions map[int32]proto.Extension
|
||||
// The first is handled here;
|
||||
// the second is handled at the bottom of this function.
|
||||
if name == "XXX_unrecognized" && !fv.IsNil() {
|
||||
if err := writeUnknownStruct(w, fv.Interface().([]byte)); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
continue
|
||||
}
|
||||
if fv.Kind() == reflect.Ptr && fv.IsNil() {
|
||||
// Field not filled in. This could be an optional field or
|
||||
// a required field that wasn't filled in. Either way, there
|
||||
// isn't anything we can show for it.
|
||||
continue
|
||||
}
|
||||
if fv.Kind() == reflect.Slice && fv.IsNil() {
|
||||
// Repeated field that is empty, or a bytes field that is unused.
|
||||
continue
|
||||
}
|
||||
|
||||
if props.Repeated && fv.Kind() == reflect.Slice {
|
||||
// Repeated field.
|
||||
for j := 0; j < fv.Len(); j++ {
|
||||
if err := writeName(w, props); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte(' '); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
v := fv.Index(j)
|
||||
if v.Kind() == reflect.Ptr && v.IsNil() {
|
||||
// A nil message in a repeated field is not valid,
|
||||
// but we can handle that more gracefully than panicking.
|
||||
if _, err := w.Write([]byte("<nil>\n")); err != nil {
|
||||
return err
|
||||
}
|
||||
continue
|
||||
}
|
||||
if err := tm.writeAny(w, v, props); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
continue
|
||||
}
|
||||
if fv.Kind() == reflect.Map {
|
||||
// Map fields are rendered as a repeated struct with key/value fields.
|
||||
keys := fv.MapKeys()
|
||||
sort.Sort(mapKeys(keys))
|
||||
for _, key := range keys {
|
||||
val := fv.MapIndex(key)
|
||||
if err := writeName(w, props); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte(' '); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
// open struct
|
||||
if err := w.WriteByte('<'); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
w.indent()
|
||||
// key
|
||||
if _, err := w.WriteString("key:"); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte(' '); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err := tm.writeAny(w, key, props.MapKeyProp); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
// nil values aren't legal, but we can avoid panicking because of them.
|
||||
if val.Kind() != reflect.Ptr || !val.IsNil() {
|
||||
// value
|
||||
if _, err := w.WriteString("value:"); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte(' '); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err := tm.writeAny(w, val, props.MapValProp); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
// close struct
|
||||
w.unindent()
|
||||
if err := w.WriteByte('>'); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
continue
|
||||
}
|
||||
if props.proto3 && fv.Kind() == reflect.Slice && fv.Len() == 0 {
|
||||
// empty bytes field
|
||||
continue
|
||||
}
|
||||
if fv.Kind() != reflect.Ptr && fv.Kind() != reflect.Slice {
|
||||
// proto3 non-repeated scalar field; skip if zero value
|
||||
if isProto3Zero(fv) {
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
if fv.Kind() == reflect.Interface {
|
||||
// Check if it is a oneof.
|
||||
if st.Field(i).Tag.Get("protobuf_oneof") != "" {
|
||||
// fv is nil, or holds a pointer to generated struct.
|
||||
// That generated struct has exactly one field,
|
||||
// which has a protobuf struct tag.
|
||||
if fv.IsNil() {
|
||||
continue
|
||||
}
|
||||
inner := fv.Elem().Elem() // interface -> *T -> T
|
||||
tag := inner.Type().Field(0).Tag.Get("protobuf")
|
||||
props = new(Properties) // Overwrite the outer props var, but not its pointee.
|
||||
props.Parse(tag)
|
||||
// Write the value in the oneof, not the oneof itself.
|
||||
fv = inner.Field(0)
|
||||
|
||||
// Special case to cope with malformed messages gracefully:
|
||||
// If the value in the oneof is a nil pointer, don't panic
|
||||
// in writeAny.
|
||||
if fv.Kind() == reflect.Ptr && fv.IsNil() {
|
||||
// Use errors.New so writeAny won't render quotes.
|
||||
msg := errors.New("/* nil */")
|
||||
fv = reflect.ValueOf(&msg).Elem()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if err := writeName(w, props); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte(' '); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Enums have a String method, so writeAny will work fine.
|
||||
if err := tm.writeAny(w, fv, props); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Extensions (the XXX_extensions field).
|
||||
pv := sv.Addr()
|
||||
if _, err := extendable(pv.Interface()); err == nil {
|
||||
if err := tm.writeExtensions(w, pv); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// writeAny writes an arbitrary field.
|
||||
func (tm *TextMarshaler) writeAny(w *textWriter, v reflect.Value, props *Properties) error {
|
||||
v = reflect.Indirect(v)
|
||||
|
||||
// Floats have special cases.
|
||||
if v.Kind() == reflect.Float32 || v.Kind() == reflect.Float64 {
|
||||
x := v.Float()
|
||||
var b []byte
|
||||
switch {
|
||||
case math.IsInf(x, 1):
|
||||
b = posInf
|
||||
case math.IsInf(x, -1):
|
||||
b = negInf
|
||||
case math.IsNaN(x):
|
||||
b = nan
|
||||
}
|
||||
if b != nil {
|
||||
_, err := w.Write(b)
|
||||
return err
|
||||
}
|
||||
// Other values are handled below.
|
||||
}
|
||||
|
||||
// We don't attempt to serialise every possible value type; only those
|
||||
// that can occur in protocol buffers.
|
||||
switch v.Kind() {
|
||||
case reflect.Slice:
|
||||
// Should only be a []byte; repeated fields are handled in writeStruct.
|
||||
if err := writeString(w, string(v.Bytes())); err != nil {
|
||||
return err
|
||||
}
|
||||
case reflect.String:
|
||||
if err := writeString(w, v.String()); err != nil {
|
||||
return err
|
||||
}
|
||||
case reflect.Struct:
|
||||
// Required/optional group/message.
|
||||
var bra, ket byte = '<', '>'
|
||||
if props != nil && props.Wire == "group" {
|
||||
bra, ket = '{', '}'
|
||||
}
|
||||
if err := w.WriteByte(bra); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
w.indent()
|
||||
if v.CanAddr() {
|
||||
// Calling v.Interface on a struct causes the reflect package to
|
||||
// copy the entire struct. This is racy with the new Marshaler
|
||||
// since we atomically update the XXX_sizecache.
|
||||
//
|
||||
// Thus, we retrieve a pointer to the struct if possible to avoid
|
||||
// a race since v.Interface on the pointer doesn't copy the struct.
|
||||
//
|
||||
// If v is not addressable, then we are not worried about a race
|
||||
// since it implies that the binary Marshaler cannot possibly be
|
||||
// mutating this value.
|
||||
v = v.Addr()
|
||||
}
|
||||
if etm, ok := v.Interface().(encoding.TextMarshaler); ok {
|
||||
text, err := etm.MarshalText()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if _, err = w.Write(text); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if v.Kind() == reflect.Ptr {
|
||||
v = v.Elem()
|
||||
}
|
||||
if err := tm.writeStruct(w, v); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
w.unindent()
|
||||
if err := w.WriteByte(ket); err != nil {
|
||||
return err
|
||||
}
|
||||
default:
|
||||
_, err := fmt.Fprint(w, v.Interface())
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// equivalent to C's isprint.
|
||||
func isprint(c byte) bool {
|
||||
return c >= 0x20 && c < 0x7f
|
||||
}
|
||||
|
||||
// writeString writes a string in the protocol buffer text format.
|
||||
// It is similar to strconv.Quote except we don't use Go escape sequences,
|
||||
// we treat the string as a byte sequence, and we use octal escapes.
|
||||
// These differences are to maintain interoperability with the other
|
||||
// languages' implementations of the text format.
|
||||
func writeString(w *textWriter, s string) error {
|
||||
// use WriteByte here to get any needed indent
|
||||
if err := w.WriteByte('"'); err != nil {
|
||||
return err
|
||||
}
|
||||
// Loop over the bytes, not the runes.
|
||||
for i := 0; i < len(s); i++ {
|
||||
var err error
|
||||
// Divergence from C++: we don't escape apostrophes.
|
||||
// There's no need to escape them, and the C++ parser
|
||||
// copes with a naked apostrophe.
|
||||
switch c := s[i]; c {
|
||||
case '\n':
|
||||
_, err = w.w.Write(backslashN)
|
||||
case '\r':
|
||||
_, err = w.w.Write(backslashR)
|
||||
case '\t':
|
||||
_, err = w.w.Write(backslashT)
|
||||
case '"':
|
||||
_, err = w.w.Write(backslashDQ)
|
||||
case '\\':
|
||||
_, err = w.w.Write(backslashBS)
|
||||
default:
|
||||
if isprint(c) {
|
||||
err = w.w.WriteByte(c)
|
||||
} else {
|
||||
_, err = fmt.Fprintf(w.w, "\\%03o", c)
|
||||
}
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return w.WriteByte('"')
|
||||
}
|
||||
|
||||
func writeUnknownStruct(w *textWriter, data []byte) (err error) {
|
||||
if !w.compact {
|
||||
if _, err := fmt.Fprintf(w, "/* %d unknown bytes */\n", len(data)); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
b := NewBuffer(data)
|
||||
for b.index < len(b.buf) {
|
||||
x, err := b.DecodeVarint()
|
||||
if err != nil {
|
||||
_, err := fmt.Fprintf(w, "/* %v */\n", err)
|
||||
return err
|
||||
}
|
||||
wire, tag := x&7, x>>3
|
||||
if wire == WireEndGroup {
|
||||
w.unindent()
|
||||
if _, err := w.Write(endBraceNewline); err != nil {
|
||||
return err
|
||||
}
|
||||
continue
|
||||
}
|
||||
if _, err := fmt.Fprint(w, tag); err != nil {
|
||||
return err
|
||||
}
|
||||
if wire != WireStartGroup {
|
||||
if err := w.WriteByte(':'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if !w.compact || wire == WireStartGroup {
|
||||
if err := w.WriteByte(' '); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
switch wire {
|
||||
case WireBytes:
|
||||
buf, e := b.DecodeRawBytes(false)
|
||||
if e == nil {
|
||||
_, err = fmt.Fprintf(w, "%q", buf)
|
||||
} else {
|
||||
_, err = fmt.Fprintf(w, "/* %v */", e)
|
||||
}
|
||||
case WireFixed32:
|
||||
x, err = b.DecodeFixed32()
|
||||
err = writeUnknownInt(w, x, err)
|
||||
case WireFixed64:
|
||||
x, err = b.DecodeFixed64()
|
||||
err = writeUnknownInt(w, x, err)
|
||||
case WireStartGroup:
|
||||
err = w.WriteByte('{')
|
||||
w.indent()
|
||||
case WireVarint:
|
||||
x, err = b.DecodeVarint()
|
||||
err = writeUnknownInt(w, x, err)
|
||||
default:
|
||||
_, err = fmt.Fprintf(w, "/* unknown wire type %d */", wire)
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err = w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func writeUnknownInt(w *textWriter, x uint64, err error) error {
|
||||
if err == nil {
|
||||
_, err = fmt.Fprint(w, x)
|
||||
} else {
|
||||
_, err = fmt.Fprintf(w, "/* %v */", err)
|
||||
}
|
||||
return err
|
||||
}
|
||||
|
||||
type int32Slice []int32
|
||||
|
||||
func (s int32Slice) Len() int { return len(s) }
|
||||
func (s int32Slice) Less(i, j int) bool { return s[i] < s[j] }
|
||||
func (s int32Slice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
|
||||
|
||||
// writeExtensions writes all the extensions in pv.
|
||||
// pv is assumed to be a pointer to a protocol message struct that is extendable.
|
||||
func (tm *TextMarshaler) writeExtensions(w *textWriter, pv reflect.Value) error {
|
||||
emap := extensionMaps[pv.Type().Elem()]
|
||||
ep, _ := extendable(pv.Interface())
|
||||
|
||||
// Order the extensions by ID.
|
||||
// This isn't strictly necessary, but it will give us
|
||||
// canonical output, which will also make testing easier.
|
||||
m, mu := ep.extensionsRead()
|
||||
if m == nil {
|
||||
return nil
|
||||
}
|
||||
mu.Lock()
|
||||
ids := make([]int32, 0, len(m))
|
||||
for id := range m {
|
||||
ids = append(ids, id)
|
||||
}
|
||||
sort.Sort(int32Slice(ids))
|
||||
mu.Unlock()
|
||||
|
||||
for _, extNum := range ids {
|
||||
ext := m[extNum]
|
||||
var desc *ExtensionDesc
|
||||
if emap != nil {
|
||||
desc = emap[extNum]
|
||||
}
|
||||
if desc == nil {
|
||||
// Unknown extension.
|
||||
if err := writeUnknownStruct(w, ext.enc); err != nil {
|
||||
return err
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
pb, err := GetExtension(ep, desc)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed getting extension: %v", err)
|
||||
}
|
||||
|
||||
// Repeated extensions will appear as a slice.
|
||||
if !desc.repeated() {
|
||||
if err := tm.writeExtension(w, desc.Name, pb); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
v := reflect.ValueOf(pb)
|
||||
for i := 0; i < v.Len(); i++ {
|
||||
if err := tm.writeExtension(w, desc.Name, v.Index(i).Interface()); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (tm *TextMarshaler) writeExtension(w *textWriter, name string, pb interface{}) error {
|
||||
if _, err := fmt.Fprintf(w, "[%s]:", name); err != nil {
|
||||
return err
|
||||
}
|
||||
if !w.compact {
|
||||
if err := w.WriteByte(' '); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err := tm.writeAny(w, reflect.ValueOf(pb), nil); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := w.WriteByte('\n'); err != nil {
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (w *textWriter) writeIndent() {
|
||||
if !w.complete {
|
||||
return
|
||||
}
|
||||
remain := w.ind * 2
|
||||
for remain > 0 {
|
||||
n := remain
|
||||
if n > len(spaces) {
|
||||
n = len(spaces)
|
||||
}
|
||||
w.w.Write(spaces[:n])
|
||||
remain -= n
|
||||
}
|
||||
w.complete = false
|
||||
}
|
||||
|
||||
// TextMarshaler is a configurable text format marshaler.
|
||||
type TextMarshaler struct {
|
||||
Compact bool // use compact text format (one line).
|
||||
ExpandAny bool // expand google.protobuf.Any messages of known types
|
||||
}
|
||||
|
||||
// Marshal writes a given protocol buffer in text format.
|
||||
// The only errors returned are from w.
|
||||
func (tm *TextMarshaler) Marshal(w io.Writer, pb Message) error {
|
||||
val := reflect.ValueOf(pb)
|
||||
if pb == nil || val.IsNil() {
|
||||
w.Write([]byte("<nil>"))
|
||||
return nil
|
||||
}
|
||||
var bw *bufio.Writer
|
||||
ww, ok := w.(writer)
|
||||
if !ok {
|
||||
bw = bufio.NewWriter(w)
|
||||
ww = bw
|
||||
}
|
||||
aw := &textWriter{
|
||||
w: ww,
|
||||
complete: true,
|
||||
compact: tm.Compact,
|
||||
}
|
||||
|
||||
if etm, ok := pb.(encoding.TextMarshaler); ok {
|
||||
text, err := etm.MarshalText()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if _, err = aw.Write(text); err != nil {
|
||||
return err
|
||||
}
|
||||
if bw != nil {
|
||||
return bw.Flush()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
// Dereference the received pointer so we don't have outer < and >.
|
||||
v := reflect.Indirect(val)
|
||||
if err := tm.writeStruct(aw, v); err != nil {
|
||||
return err
|
||||
}
|
||||
if bw != nil {
|
||||
return bw.Flush()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Text is the same as Marshal, but returns the string directly.
|
||||
func (tm *TextMarshaler) Text(pb Message) string {
|
||||
var buf bytes.Buffer
|
||||
tm.Marshal(&buf, pb)
|
||||
return buf.String()
|
||||
}
|
||||
|
||||
var (
|
||||
defaultTextMarshaler = TextMarshaler{}
|
||||
compactTextMarshaler = TextMarshaler{Compact: true}
|
||||
)
|
||||
|
||||
// TODO: consider removing some of the Marshal functions below.
|
||||
|
||||
// MarshalText writes a given protocol buffer in text format.
|
||||
// The only errors returned are from w.
|
||||
func MarshalText(w io.Writer, pb Message) error { return defaultTextMarshaler.Marshal(w, pb) }
|
||||
|
||||
// MarshalTextString is the same as MarshalText, but returns the string directly.
|
||||
func MarshalTextString(pb Message) string { return defaultTextMarshaler.Text(pb) }
|
||||
|
||||
// CompactText writes a given protocol buffer in compact text format (one line).
|
||||
func CompactText(w io.Writer, pb Message) error { return compactTextMarshaler.Marshal(w, pb) }
|
||||
|
||||
// CompactTextString is the same as CompactText, but returns the string directly.
|
||||
func CompactTextString(pb Message) string { return compactTextMarshaler.Text(pb) }
|
||||
|
|
@ -0,0 +1,880 @@
|
|||
// Go support for Protocol Buffers - Google's data interchange format
|
||||
//
|
||||
// Copyright 2010 The Go Authors. All rights reserved.
|
||||
// https://github.com/golang/protobuf
|
||||
//
|
||||
// Redistribution and use in source and binary forms, with or without
|
||||
// modification, are permitted provided that the following conditions are
|
||||
// met:
|
||||
//
|
||||
// * Redistributions of source code must retain the above copyright
|
||||
// notice, this list of conditions and the following disclaimer.
|
||||
// * Redistributions in binary form must reproduce the above
|
||||
// copyright notice, this list of conditions and the following disclaimer
|
||||
// in the documentation and/or other materials provided with the
|
||||
// distribution.
|
||||
// * Neither the name of Google Inc. nor the names of its
|
||||
// contributors may be used to endorse or promote products derived from
|
||||
// this software without specific prior written permission.
|
||||
//
|
||||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
|
||||
package proto
|
||||
|
||||
// Functions for parsing the Text protocol buffer format.
|
||||
// TODO: message sets.
|
||||
|
||||
import (
|
||||
"encoding"
|
||||
"errors"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strconv"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
// Error string emitted when deserializing Any and fields are already set
|
||||
const anyRepeatedlyUnpacked = "Any message unpacked multiple times, or %q already set"
|
||||
|
||||
type ParseError struct {
|
||||
Message string
|
||||
Line int // 1-based line number
|
||||
Offset int // 0-based byte offset from start of input
|
||||
}
|
||||
|
||||
func (p *ParseError) Error() string {
|
||||
if p.Line == 1 {
|
||||
// show offset only for first line
|
||||
return fmt.Sprintf("line 1.%d: %v", p.Offset, p.Message)
|
||||
}
|
||||
return fmt.Sprintf("line %d: %v", p.Line, p.Message)
|
||||
}
|
||||
|
||||
type token struct {
|
||||
value string
|
||||
err *ParseError
|
||||
line int // line number
|
||||
offset int // byte number from start of input, not start of line
|
||||
unquoted string // the unquoted version of value, if it was a quoted string
|
||||
}
|
||||
|
||||
func (t *token) String() string {
|
||||
if t.err == nil {
|
||||
return fmt.Sprintf("%q (line=%d, offset=%d)", t.value, t.line, t.offset)
|
||||
}
|
||||
return fmt.Sprintf("parse error: %v", t.err)
|
||||
}
|
||||
|
||||
type textParser struct {
|
||||
s string // remaining input
|
||||
done bool // whether the parsing is finished (success or error)
|
||||
backed bool // whether back() was called
|
||||
offset, line int
|
||||
cur token
|
||||
}
|
||||
|
||||
func newTextParser(s string) *textParser {
|
||||
p := new(textParser)
|
||||
p.s = s
|
||||
p.line = 1
|
||||
p.cur.line = 1
|
||||
return p
|
||||
}
|
||||
|
||||
func (p *textParser) errorf(format string, a ...interface{}) *ParseError {
|
||||
pe := &ParseError{fmt.Sprintf(format, a...), p.cur.line, p.cur.offset}
|
||||
p.cur.err = pe
|
||||
p.done = true
|
||||
return pe
|
||||
}
|
||||
|
||||
// Numbers and identifiers are matched by [-+._A-Za-z0-9]
|
||||
func isIdentOrNumberChar(c byte) bool {
|
||||
switch {
|
||||
case 'A' <= c && c <= 'Z', 'a' <= c && c <= 'z':
|
||||
return true
|
||||
case '0' <= c && c <= '9':
|
||||
return true
|
||||
}
|
||||
switch c {
|
||||
case '-', '+', '.', '_':
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func isWhitespace(c byte) bool {
|
||||
switch c {
|
||||
case ' ', '\t', '\n', '\r':
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func isQuote(c byte) bool {
|
||||
switch c {
|
||||
case '"', '\'':
|
||||
return true
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func (p *textParser) skipWhitespace() {
|
||||
i := 0
|
||||
for i < len(p.s) && (isWhitespace(p.s[i]) || p.s[i] == '#') {
|
||||
if p.s[i] == '#' {
|
||||
// comment; skip to end of line or input
|
||||
for i < len(p.s) && p.s[i] != '\n' {
|
||||
i++
|
||||
}
|
||||
if i == len(p.s) {
|
||||
break
|
||||
}
|
||||
}
|
||||
if p.s[i] == '\n' {
|
||||
p.line++
|
||||
}
|
||||
i++
|
||||
}
|
||||
p.offset += i
|
||||
p.s = p.s[i:len(p.s)]
|
||||
if len(p.s) == 0 {
|
||||
p.done = true
|
||||
}
|
||||
}
|
||||
|
||||
func (p *textParser) advance() {
|
||||
// Skip whitespace
|
||||
p.skipWhitespace()
|
||||
if p.done {
|
||||
return
|
||||
}
|
||||
|
||||
// Start of non-whitespace
|
||||
p.cur.err = nil
|
||||
p.cur.offset, p.cur.line = p.offset, p.line
|
||||
p.cur.unquoted = ""
|
||||
switch p.s[0] {
|
||||
case '<', '>', '{', '}', ':', '[', ']', ';', ',', '/':
|
||||
// Single symbol
|
||||
p.cur.value, p.s = p.s[0:1], p.s[1:len(p.s)]
|
||||
case '"', '\'':
|
||||
// Quoted string
|
||||
i := 1
|
||||
for i < len(p.s) && p.s[i] != p.s[0] && p.s[i] != '\n' {
|
||||
if p.s[i] == '\\' && i+1 < len(p.s) {
|
||||
// skip escaped char
|
||||
i++
|
||||
}
|
||||
i++
|
||||
}
|
||||
if i >= len(p.s) || p.s[i] != p.s[0] {
|
||||
p.errorf("unmatched quote")
|
||||
return
|
||||
}
|
||||
unq, err := unquoteC(p.s[1:i], rune(p.s[0]))
|
||||
if err != nil {
|
||||
p.errorf("invalid quoted string %s: %v", p.s[0:i+1], err)
|
||||
return
|
||||
}
|
||||
p.cur.value, p.s = p.s[0:i+1], p.s[i+1:len(p.s)]
|
||||
p.cur.unquoted = unq
|
||||
default:
|
||||
i := 0
|
||||
for i < len(p.s) && isIdentOrNumberChar(p.s[i]) {
|
||||
i++
|
||||
}
|
||||
if i == 0 {
|
||||
p.errorf("unexpected byte %#x", p.s[0])
|
||||
return
|
||||
}
|
||||
p.cur.value, p.s = p.s[0:i], p.s[i:len(p.s)]
|
||||
}
|
||||
p.offset += len(p.cur.value)
|
||||
}
|
||||
|
||||
var (
|
||||
errBadUTF8 = errors.New("proto: bad UTF-8")
|
||||
)
|
||||
|
||||
func unquoteC(s string, quote rune) (string, error) {
|
||||
// This is based on C++'s tokenizer.cc.
|
||||
// Despite its name, this is *not* parsing C syntax.
|
||||
// For instance, "\0" is an invalid quoted string.
|
||||
|
||||
// Avoid allocation in trivial cases.
|
||||
simple := true
|
||||
for _, r := range s {
|
||||
if r == '\\' || r == quote {
|
||||
simple = false
|
||||
break
|
||||
}
|
||||
}
|
||||
if simple {
|
||||
return s, nil
|
||||
}
|
||||
|
||||
buf := make([]byte, 0, 3*len(s)/2)
|
||||
for len(s) > 0 {
|
||||
r, n := utf8.DecodeRuneInString(s)
|
||||
if r == utf8.RuneError && n == 1 {
|
||||
return "", errBadUTF8
|
||||
}
|
||||
s = s[n:]
|
||||
if r != '\\' {
|
||||
if r < utf8.RuneSelf {
|
||||
buf = append(buf, byte(r))
|
||||
} else {
|
||||
buf = append(buf, string(r)...)
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
ch, tail, err := unescape(s)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
buf = append(buf, ch...)
|
||||
s = tail
|
||||
}
|
||||
return string(buf), nil
|
||||
}
|
||||
|
||||
func unescape(s string) (ch string, tail string, err error) {
|
||||
r, n := utf8.DecodeRuneInString(s)
|
||||
if r == utf8.RuneError && n == 1 {
|
||||
return "", "", errBadUTF8
|
||||
}
|
||||
s = s[n:]
|
||||
switch r {
|
||||
case 'a':
|
||||
return "\a", s, nil
|
||||
case 'b':
|
||||
return "\b", s, nil
|
||||
case 'f':
|
||||
return "\f", s, nil
|
||||
case 'n':
|
||||
return "\n", s, nil
|
||||
case 'r':
|
||||
return "\r", s, nil
|
||||
case 't':
|
||||
return "\t", s, nil
|
||||
case 'v':
|
||||
return "\v", s, nil
|
||||
case '?':
|
||||
return "?", s, nil // trigraph workaround
|
||||
case '\'', '"', '\\':
|
||||
return string(r), s, nil
|
||||
case '0', '1', '2', '3', '4', '5', '6', '7':
|
||||
if len(s) < 2 {
|
||||
return "", "", fmt.Errorf(`\%c requires 2 following digits`, r)
|
||||
}
|
||||
ss := string(r) + s[:2]
|
||||
s = s[2:]
|
||||
i, err := strconv.ParseUint(ss, 8, 8)
|
||||
if err != nil {
|
||||
return "", "", fmt.Errorf(`\%s contains non-octal digits`, ss)
|
||||
}
|
||||
return string([]byte{byte(i)}), s, nil
|
||||
case 'x', 'X', 'u', 'U':
|
||||
var n int
|
||||
switch r {
|
||||
case 'x', 'X':
|
||||
n = 2
|
||||
case 'u':
|
||||
n = 4
|
||||
case 'U':
|
||||
n = 8
|
||||
}
|
||||
if len(s) < n {
|
||||
return "", "", fmt.Errorf(`\%c requires %d following digits`, r, n)
|
||||
}
|
||||
ss := s[:n]
|
||||
s = s[n:]
|
||||
i, err := strconv.ParseUint(ss, 16, 64)
|
||||
if err != nil {
|
||||
return "", "", fmt.Errorf(`\%c%s contains non-hexadecimal digits`, r, ss)
|
||||
}
|
||||
if r == 'x' || r == 'X' {
|
||||
return string([]byte{byte(i)}), s, nil
|
||||
}
|
||||
if i > utf8.MaxRune {
|
||||
return "", "", fmt.Errorf(`\%c%s is not a valid Unicode code point`, r, ss)
|
||||
}
|
||||
return string(i), s, nil
|
||||
}
|
||||
return "", "", fmt.Errorf(`unknown escape \%c`, r)
|
||||
}
|
||||
|
||||
// Back off the parser by one token. Can only be done between calls to next().
|
||||
// It makes the next advance() a no-op.
|
||||
func (p *textParser) back() { p.backed = true }
|
||||
|
||||
// Advances the parser and returns the new current token.
|
||||
func (p *textParser) next() *token {
|
||||
if p.backed || p.done {
|
||||
p.backed = false
|
||||
return &p.cur
|
||||
}
|
||||
p.advance()
|
||||
if p.done {
|
||||
p.cur.value = ""
|
||||
} else if len(p.cur.value) > 0 && isQuote(p.cur.value[0]) {
|
||||
// Look for multiple quoted strings separated by whitespace,
|
||||
// and concatenate them.
|
||||
cat := p.cur
|
||||
for {
|
||||
p.skipWhitespace()
|
||||
if p.done || !isQuote(p.s[0]) {
|
||||
break
|
||||
}
|
||||
p.advance()
|
||||
if p.cur.err != nil {
|
||||
return &p.cur
|
||||
}
|
||||
cat.value += " " + p.cur.value
|
||||
cat.unquoted += p.cur.unquoted
|
||||
}
|
||||
p.done = false // parser may have seen EOF, but we want to return cat
|
||||
p.cur = cat
|
||||
}
|
||||
return &p.cur
|
||||
}
|
||||
|
||||
func (p *textParser) consumeToken(s string) error {
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
if tok.value != s {
|
||||
p.back()
|
||||
return p.errorf("expected %q, found %q", s, tok.value)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Return a RequiredNotSetError indicating which required field was not set.
|
||||
func (p *textParser) missingRequiredFieldError(sv reflect.Value) *RequiredNotSetError {
|
||||
st := sv.Type()
|
||||
sprops := GetProperties(st)
|
||||
for i := 0; i < st.NumField(); i++ {
|
||||
if !isNil(sv.Field(i)) {
|
||||
continue
|
||||
}
|
||||
|
||||
props := sprops.Prop[i]
|
||||
if props.Required {
|
||||
return &RequiredNotSetError{fmt.Sprintf("%v.%v", st, props.OrigName)}
|
||||
}
|
||||
}
|
||||
return &RequiredNotSetError{fmt.Sprintf("%v.<unknown field name>", st)} // should not happen
|
||||
}
|
||||
|
||||
// Returns the index in the struct for the named field, as well as the parsed tag properties.
|
||||
func structFieldByName(sprops *StructProperties, name string) (int, *Properties, bool) {
|
||||
i, ok := sprops.decoderOrigNames[name]
|
||||
if ok {
|
||||
return i, sprops.Prop[i], true
|
||||
}
|
||||
return -1, nil, false
|
||||
}
|
||||
|
||||
// Consume a ':' from the input stream (if the next token is a colon),
|
||||
// returning an error if a colon is needed but not present.
|
||||
func (p *textParser) checkForColon(props *Properties, typ reflect.Type) *ParseError {
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
if tok.value != ":" {
|
||||
// Colon is optional when the field is a group or message.
|
||||
needColon := true
|
||||
switch props.Wire {
|
||||
case "group":
|
||||
needColon = false
|
||||
case "bytes":
|
||||
// A "bytes" field is either a message, a string, or a repeated field;
|
||||
// those three become *T, *string and []T respectively, so we can check for
|
||||
// this field being a pointer to a non-string.
|
||||
if typ.Kind() == reflect.Ptr {
|
||||
// *T or *string
|
||||
if typ.Elem().Kind() == reflect.String {
|
||||
break
|
||||
}
|
||||
} else if typ.Kind() == reflect.Slice {
|
||||
// []T or []*T
|
||||
if typ.Elem().Kind() != reflect.Ptr {
|
||||
break
|
||||
}
|
||||
} else if typ.Kind() == reflect.String {
|
||||
// The proto3 exception is for a string field,
|
||||
// which requires a colon.
|
||||
break
|
||||
}
|
||||
needColon = false
|
||||
}
|
||||
if needColon {
|
||||
return p.errorf("expected ':', found %q", tok.value)
|
||||
}
|
||||
p.back()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *textParser) readStruct(sv reflect.Value, terminator string) error {
|
||||
st := sv.Type()
|
||||
sprops := GetProperties(st)
|
||||
reqCount := sprops.reqCount
|
||||
var reqFieldErr error
|
||||
fieldSet := make(map[string]bool)
|
||||
// A struct is a sequence of "name: value", terminated by one of
|
||||
// '>' or '}', or the end of the input. A name may also be
|
||||
// "[extension]" or "[type/url]".
|
||||
//
|
||||
// The whole struct can also be an expanded Any message, like:
|
||||
// [type/url] < ... struct contents ... >
|
||||
for {
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
if tok.value == terminator {
|
||||
break
|
||||
}
|
||||
if tok.value == "[" {
|
||||
// Looks like an extension or an Any.
|
||||
//
|
||||
// TODO: Check whether we need to handle
|
||||
// namespace rooted names (e.g. ".something.Foo").
|
||||
extName, err := p.consumeExtName()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if s := strings.LastIndex(extName, "/"); s >= 0 {
|
||||
// If it contains a slash, it's an Any type URL.
|
||||
messageName := extName[s+1:]
|
||||
mt := MessageType(messageName)
|
||||
if mt == nil {
|
||||
return p.errorf("unrecognized message %q in google.protobuf.Any", messageName)
|
||||
}
|
||||
tok = p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
// consume an optional colon
|
||||
if tok.value == ":" {
|
||||
tok = p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
}
|
||||
var terminator string
|
||||
switch tok.value {
|
||||
case "<":
|
||||
terminator = ">"
|
||||
case "{":
|
||||
terminator = "}"
|
||||
default:
|
||||
return p.errorf("expected '{' or '<', found %q", tok.value)
|
||||
}
|
||||
v := reflect.New(mt.Elem())
|
||||
if pe := p.readStruct(v.Elem(), terminator); pe != nil {
|
||||
return pe
|
||||
}
|
||||
b, err := Marshal(v.Interface().(Message))
|
||||
if err != nil {
|
||||
return p.errorf("failed to marshal message of type %q: %v", messageName, err)
|
||||
}
|
||||
if fieldSet["type_url"] {
|
||||
return p.errorf(anyRepeatedlyUnpacked, "type_url")
|
||||
}
|
||||
if fieldSet["value"] {
|
||||
return p.errorf(anyRepeatedlyUnpacked, "value")
|
||||
}
|
||||
sv.FieldByName("TypeUrl").SetString(extName)
|
||||
sv.FieldByName("Value").SetBytes(b)
|
||||
fieldSet["type_url"] = true
|
||||
fieldSet["value"] = true
|
||||
continue
|
||||
}
|
||||
|
||||
var desc *ExtensionDesc
|
||||
// This could be faster, but it's functional.
|
||||
// TODO: Do something smarter than a linear scan.
|
||||
for _, d := range RegisteredExtensions(reflect.New(st).Interface().(Message)) {
|
||||
if d.Name == extName {
|
||||
desc = d
|
||||
break
|
||||
}
|
||||
}
|
||||
if desc == nil {
|
||||
return p.errorf("unrecognized extension %q", extName)
|
||||
}
|
||||
|
||||
props := &Properties{}
|
||||
props.Parse(desc.Tag)
|
||||
|
||||
typ := reflect.TypeOf(desc.ExtensionType)
|
||||
if err := p.checkForColon(props, typ); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
rep := desc.repeated()
|
||||
|
||||
// Read the extension structure, and set it in
|
||||
// the value we're constructing.
|
||||
var ext reflect.Value
|
||||
if !rep {
|
||||
ext = reflect.New(typ).Elem()
|
||||
} else {
|
||||
ext = reflect.New(typ.Elem()).Elem()
|
||||
}
|
||||
if err := p.readAny(ext, props); err != nil {
|
||||
if _, ok := err.(*RequiredNotSetError); !ok {
|
||||
return err
|
||||
}
|
||||
reqFieldErr = err
|
||||
}
|
||||
ep := sv.Addr().Interface().(Message)
|
||||
if !rep {
|
||||
SetExtension(ep, desc, ext.Interface())
|
||||
} else {
|
||||
old, err := GetExtension(ep, desc)
|
||||
var sl reflect.Value
|
||||
if err == nil {
|
||||
sl = reflect.ValueOf(old) // existing slice
|
||||
} else {
|
||||
sl = reflect.MakeSlice(typ, 0, 1)
|
||||
}
|
||||
sl = reflect.Append(sl, ext)
|
||||
SetExtension(ep, desc, sl.Interface())
|
||||
}
|
||||
if err := p.consumeOptionalSeparator(); err != nil {
|
||||
return err
|
||||
}
|
||||
continue
|
||||
}
|
||||
|
||||
// This is a normal, non-extension field.
|
||||
name := tok.value
|
||||
var dst reflect.Value
|
||||
fi, props, ok := structFieldByName(sprops, name)
|
||||
if ok {
|
||||
dst = sv.Field(fi)
|
||||
} else if oop, ok := sprops.OneofTypes[name]; ok {
|
||||
// It is a oneof.
|
||||
props = oop.Prop
|
||||
nv := reflect.New(oop.Type.Elem())
|
||||
dst = nv.Elem().Field(0)
|
||||
field := sv.Field(oop.Field)
|
||||
if !field.IsNil() {
|
||||
return p.errorf("field '%s' would overwrite already parsed oneof '%s'", name, sv.Type().Field(oop.Field).Name)
|
||||
}
|
||||
field.Set(nv)
|
||||
}
|
||||
if !dst.IsValid() {
|
||||
return p.errorf("unknown field name %q in %v", name, st)
|
||||
}
|
||||
|
||||
if dst.Kind() == reflect.Map {
|
||||
// Consume any colon.
|
||||
if err := p.checkForColon(props, dst.Type()); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Construct the map if it doesn't already exist.
|
||||
if dst.IsNil() {
|
||||
dst.Set(reflect.MakeMap(dst.Type()))
|
||||
}
|
||||
key := reflect.New(dst.Type().Key()).Elem()
|
||||
val := reflect.New(dst.Type().Elem()).Elem()
|
||||
|
||||
// The map entry should be this sequence of tokens:
|
||||
// < key : KEY value : VALUE >
|
||||
// However, implementations may omit key or value, and technically
|
||||
// we should support them in any order. See b/28924776 for a time
|
||||
// this went wrong.
|
||||
|
||||
tok := p.next()
|
||||
var terminator string
|
||||
switch tok.value {
|
||||
case "<":
|
||||
terminator = ">"
|
||||
case "{":
|
||||
terminator = "}"
|
||||
default:
|
||||
return p.errorf("expected '{' or '<', found %q", tok.value)
|
||||
}
|
||||
for {
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
if tok.value == terminator {
|
||||
break
|
||||
}
|
||||
switch tok.value {
|
||||
case "key":
|
||||
if err := p.consumeToken(":"); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := p.readAny(key, props.MapKeyProp); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := p.consumeOptionalSeparator(); err != nil {
|
||||
return err
|
||||
}
|
||||
case "value":
|
||||
if err := p.checkForColon(props.MapValProp, dst.Type().Elem()); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := p.readAny(val, props.MapValProp); err != nil {
|
||||
return err
|
||||
}
|
||||
if err := p.consumeOptionalSeparator(); err != nil {
|
||||
return err
|
||||
}
|
||||
default:
|
||||
p.back()
|
||||
return p.errorf(`expected "key", "value", or %q, found %q`, terminator, tok.value)
|
||||
}
|
||||
}
|
||||
|
||||
dst.SetMapIndex(key, val)
|
||||
continue
|
||||
}
|
||||
|
||||
// Check that it's not already set if it's not a repeated field.
|
||||
if !props.Repeated && fieldSet[name] {
|
||||
return p.errorf("non-repeated field %q was repeated", name)
|
||||
}
|
||||
|
||||
if err := p.checkForColon(props, dst.Type()); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Parse into the field.
|
||||
fieldSet[name] = true
|
||||
if err := p.readAny(dst, props); err != nil {
|
||||
if _, ok := err.(*RequiredNotSetError); !ok {
|
||||
return err
|
||||
}
|
||||
reqFieldErr = err
|
||||
}
|
||||
if props.Required {
|
||||
reqCount--
|
||||
}
|
||||
|
||||
if err := p.consumeOptionalSeparator(); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
if reqCount > 0 {
|
||||
return p.missingRequiredFieldError(sv)
|
||||
}
|
||||
return reqFieldErr
|
||||
}
|
||||
|
||||
// consumeExtName consumes extension name or expanded Any type URL and the
|
||||
// following ']'. It returns the name or URL consumed.
|
||||
func (p *textParser) consumeExtName() (string, error) {
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return "", tok.err
|
||||
}
|
||||
|
||||
// If extension name or type url is quoted, it's a single token.
|
||||
if len(tok.value) > 2 && isQuote(tok.value[0]) && tok.value[len(tok.value)-1] == tok.value[0] {
|
||||
name, err := unquoteC(tok.value[1:len(tok.value)-1], rune(tok.value[0]))
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
return name, p.consumeToken("]")
|
||||
}
|
||||
|
||||
// Consume everything up to "]"
|
||||
var parts []string
|
||||
for tok.value != "]" {
|
||||
parts = append(parts, tok.value)
|
||||
tok = p.next()
|
||||
if tok.err != nil {
|
||||
return "", p.errorf("unrecognized type_url or extension name: %s", tok.err)
|
||||
}
|
||||
if p.done && tok.value != "]" {
|
||||
return "", p.errorf("unclosed type_url or extension name")
|
||||
}
|
||||
}
|
||||
return strings.Join(parts, ""), nil
|
||||
}
|
||||
|
||||
// consumeOptionalSeparator consumes an optional semicolon or comma.
|
||||
// It is used in readStruct to provide backward compatibility.
|
||||
func (p *textParser) consumeOptionalSeparator() error {
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
if tok.value != ";" && tok.value != "," {
|
||||
p.back()
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *textParser) readAny(v reflect.Value, props *Properties) error {
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
if tok.value == "" {
|
||||
return p.errorf("unexpected EOF")
|
||||
}
|
||||
|
||||
switch fv := v; fv.Kind() {
|
||||
case reflect.Slice:
|
||||
at := v.Type()
|
||||
if at.Elem().Kind() == reflect.Uint8 {
|
||||
// Special case for []byte
|
||||
if tok.value[0] != '"' && tok.value[0] != '\'' {
|
||||
// Deliberately written out here, as the error after
|
||||
// this switch statement would write "invalid []byte: ...",
|
||||
// which is not as user-friendly.
|
||||
return p.errorf("invalid string: %v", tok.value)
|
||||
}
|
||||
bytes := []byte(tok.unquoted)
|
||||
fv.Set(reflect.ValueOf(bytes))
|
||||
return nil
|
||||
}
|
||||
// Repeated field.
|
||||
if tok.value == "[" {
|
||||
// Repeated field with list notation, like [1,2,3].
|
||||
for {
|
||||
fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
|
||||
err := p.readAny(fv.Index(fv.Len()-1), props)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tok := p.next()
|
||||
if tok.err != nil {
|
||||
return tok.err
|
||||
}
|
||||
if tok.value == "]" {
|
||||
break
|
||||
}
|
||||
if tok.value != "," {
|
||||
return p.errorf("Expected ']' or ',' found %q", tok.value)
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
// One value of the repeated field.
|
||||
p.back()
|
||||
fv.Set(reflect.Append(fv, reflect.New(at.Elem()).Elem()))
|
||||
return p.readAny(fv.Index(fv.Len()-1), props)
|
||||
case reflect.Bool:
|
||||
// true/1/t/True or false/f/0/False.
|
||||
switch tok.value {
|
||||
case "true", "1", "t", "True":
|
||||
fv.SetBool(true)
|
||||
return nil
|
||||
case "false", "0", "f", "False":
|
||||
fv.SetBool(false)
|
||||
return nil
|
||||
}
|
||||
case reflect.Float32, reflect.Float64:
|
||||
v := tok.value
|
||||
// Ignore 'f' for compatibility with output generated by C++, but don't
|
||||
// remove 'f' when the value is "-inf" or "inf".
|
||||
if strings.HasSuffix(v, "f") && tok.value != "-inf" && tok.value != "inf" {
|
||||
v = v[:len(v)-1]
|
||||
}
|
||||
if f, err := strconv.ParseFloat(v, fv.Type().Bits()); err == nil {
|
||||
fv.SetFloat(f)
|
||||
return nil
|
||||
}
|
||||
case reflect.Int32:
|
||||
if x, err := strconv.ParseInt(tok.value, 0, 32); err == nil {
|
||||
fv.SetInt(x)
|
||||
return nil
|
||||
}
|
||||
|
||||
if len(props.Enum) == 0 {
|
||||
break
|
||||
}
|
||||
m, ok := enumValueMaps[props.Enum]
|
||||
if !ok {
|
||||
break
|
||||
}
|
||||
x, ok := m[tok.value]
|
||||
if !ok {
|
||||
break
|
||||
}
|
||||
fv.SetInt(int64(x))
|
||||
return nil
|
||||
case reflect.Int64:
|
||||
if x, err := strconv.ParseInt(tok.value, 0, 64); err == nil {
|
||||
fv.SetInt(x)
|
||||
return nil
|
||||
}
|
||||
|
||||
case reflect.Ptr:
|
||||
// A basic field (indirected through pointer), or a repeated message/group
|
||||
p.back()
|
||||
fv.Set(reflect.New(fv.Type().Elem()))
|
||||
return p.readAny(fv.Elem(), props)
|
||||
case reflect.String:
|
||||
if tok.value[0] == '"' || tok.value[0] == '\'' {
|
||||
fv.SetString(tok.unquoted)
|
||||
return nil
|
||||
}
|
||||
case reflect.Struct:
|
||||
var terminator string
|
||||
switch tok.value {
|
||||
case "{":
|
||||
terminator = "}"
|
||||
case "<":
|
||||
terminator = ">"
|
||||
default:
|
||||
return p.errorf("expected '{' or '<', found %q", tok.value)
|
||||
}
|
||||
// TODO: Handle nested messages which implement encoding.TextUnmarshaler.
|
||||
return p.readStruct(fv, terminator)
|
||||
case reflect.Uint32:
|
||||
if x, err := strconv.ParseUint(tok.value, 0, 32); err == nil {
|
||||
fv.SetUint(uint64(x))
|
||||
return nil
|
||||
}
|
||||
case reflect.Uint64:
|
||||
if x, err := strconv.ParseUint(tok.value, 0, 64); err == nil {
|
||||
fv.SetUint(x)
|
||||
return nil
|
||||
}
|
||||
}
|
||||
return p.errorf("invalid %v: %v", v.Type(), tok.value)
|
||||
}
|
||||
|
||||
// UnmarshalText reads a protocol buffer in Text format. UnmarshalText resets pb
|
||||
// before starting to unmarshal, so any existing data in pb is always removed.
|
||||
// If a required field is not set and no other error occurs,
|
||||
// UnmarshalText returns *RequiredNotSetError.
|
||||
func UnmarshalText(s string, pb Message) error {
|
||||
if um, ok := pb.(encoding.TextUnmarshaler); ok {
|
||||
return um.UnmarshalText([]byte(s))
|
||||
}
|
||||
pb.Reset()
|
||||
v := reflect.ValueOf(pb)
|
||||
return newTextParser(s).readStruct(v.Elem(), "")
|
||||
}
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
publicly display, publicly perform, sublicense, and distribute the
|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "{}"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright {yyyy} {name of copyright owner}
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
|
@ -0,0 +1 @@
|
|||
Copyright 2012 Matt T. Proud (matt.proud@gmail.com)
|
||||
1
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore
generated
vendored
Normal file
1
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/.gitignore
generated
vendored
Normal file
|
|
@ -0,0 +1 @@
|
|||
cover.dat
|
||||
7
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile
generated
vendored
Normal file
7
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/Makefile
generated
vendored
Normal file
|
|
@ -0,0 +1,7 @@
|
|||
all:
|
||||
|
||||
cover:
|
||||
go test -cover -v -coverprofile=cover.dat ./...
|
||||
go tool cover -func cover.dat
|
||||
|
||||
.PHONY: cover
|
||||
75
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go
generated
vendored
Normal file
75
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/decode.go
generated
vendored
Normal file
|
|
@ -0,0 +1,75 @@
|
|||
// Copyright 2013 Matt T. Proud
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package pbutil
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
|
||||
"github.com/golang/protobuf/proto"
|
||||
)
|
||||
|
||||
var errInvalidVarint = errors.New("invalid varint32 encountered")
|
||||
|
||||
// ReadDelimited decodes a message from the provided length-delimited stream,
|
||||
// where the length is encoded as 32-bit varint prefix to the message body.
|
||||
// It returns the total number of bytes read and any applicable error. This is
|
||||
// roughly equivalent to the companion Java API's
|
||||
// MessageLite#parseDelimitedFrom. As per the reader contract, this function
|
||||
// calls r.Read repeatedly as required until exactly one message including its
|
||||
// prefix is read and decoded (or an error has occurred). The function never
|
||||
// reads more bytes from the stream than required. The function never returns
|
||||
// an error if a message has been read and decoded correctly, even if the end
|
||||
// of the stream has been reached in doing so. In that case, any subsequent
|
||||
// calls return (0, io.EOF).
|
||||
func ReadDelimited(r io.Reader, m proto.Message) (n int, err error) {
|
||||
// Per AbstractParser#parsePartialDelimitedFrom with
|
||||
// CodedInputStream#readRawVarint32.
|
||||
var headerBuf [binary.MaxVarintLen32]byte
|
||||
var bytesRead, varIntBytes int
|
||||
var messageLength uint64
|
||||
for varIntBytes == 0 { // i.e. no varint has been decoded yet.
|
||||
if bytesRead >= len(headerBuf) {
|
||||
return bytesRead, errInvalidVarint
|
||||
}
|
||||
// We have to read byte by byte here to avoid reading more bytes
|
||||
// than required. Each read byte is appended to what we have
|
||||
// read before.
|
||||
newBytesRead, err := r.Read(headerBuf[bytesRead : bytesRead+1])
|
||||
if newBytesRead == 0 {
|
||||
if err != nil {
|
||||
return bytesRead, err
|
||||
}
|
||||
// A Reader should not return (0, nil), but if it does,
|
||||
// it should be treated as no-op (according to the
|
||||
// Reader contract). So let's go on...
|
||||
continue
|
||||
}
|
||||
bytesRead += newBytesRead
|
||||
// Now present everything read so far to the varint decoder and
|
||||
// see if a varint can be decoded already.
|
||||
messageLength, varIntBytes = proto.DecodeVarint(headerBuf[:bytesRead])
|
||||
}
|
||||
|
||||
messageBuf := make([]byte, messageLength)
|
||||
newBytesRead, err := io.ReadFull(r, messageBuf)
|
||||
bytesRead += newBytesRead
|
||||
if err != nil {
|
||||
return bytesRead, err
|
||||
}
|
||||
|
||||
return bytesRead, proto.Unmarshal(messageBuf, m)
|
||||
}
|
||||
16
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/doc.go
generated
vendored
Normal file
16
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/doc.go
generated
vendored
Normal file
|
|
@ -0,0 +1,16 @@
|
|||
// Copyright 2013 Matt T. Proud
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package pbutil provides record length-delimited Protocol Buffer streaming.
|
||||
package pbutil
|
||||
46
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go
generated
vendored
Normal file
46
vendor/github.com/matttproud/golang_protobuf_extensions/pbutil/encode.go
generated
vendored
Normal file
|
|
@ -0,0 +1,46 @@
|
|||
// Copyright 2013 Matt T. Proud
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package pbutil
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"io"
|
||||
|
||||
"github.com/golang/protobuf/proto"
|
||||
)
|
||||
|
||||
// WriteDelimited encodes and dumps a message to the provided writer prefixed
|
||||
// with a 32-bit varint indicating the length of the encoded message, producing
|
||||
// a length-delimited record stream, which can be used to chain together
|
||||
// encoded messages of the same type together in a file. It returns the total
|
||||
// number of bytes written and any applicable error. This is roughly
|
||||
// equivalent to the companion Java API's MessageLite#writeDelimitedTo.
|
||||
func WriteDelimited(w io.Writer, m proto.Message) (n int, err error) {
|
||||
buffer, err := proto.Marshal(m)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
|
||||
var buf [binary.MaxVarintLen32]byte
|
||||
encodedLength := binary.PutUvarint(buf[:], uint64(len(buffer)))
|
||||
|
||||
sync, err := w.Write(buf[:encodedLength])
|
||||
if err != nil {
|
||||
return sync, err
|
||||
}
|
||||
|
||||
n, err = w.Write(buffer)
|
||||
return n + sync, err
|
||||
}
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
idea
|
||||
cmd
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
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|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
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|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
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|
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|
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|
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|
||||
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|
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"You" (or "Your") shall mean an individual or Legal Entity
|
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|
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"Work" shall mean the work of authorship, whether in Source or
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2. Grant of Copyright License. Subject to the terms and conditions of
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|
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|
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|
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|
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(d) If the Work includes a "NOTICE" text file as part of its
|
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|
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do not modify the License. You may add Your own attribution
|
||||
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|
||||
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|
||||
You may add Your own copyright statement to Your modifications and
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|
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|
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|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
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|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
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|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
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|
||||
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|
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|
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|
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|
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|
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|
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|
||||
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|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
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||||
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||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
# go-ipp
|
||||
|
||||
[](https://github.com/phin1x/go-ipp/releases/tag/v1.1.0)
|
||||
[](https://github.com/phin1x/go-ipp/blob/master/LICENSE)
|
||||
|
||||
|
||||
|
||||
## Go Get
|
||||
|
||||
To get the package, execute:
|
||||
```
|
||||
go get -u github.com/phin1x/go-ipp
|
||||
```
|
||||
|
||||
## Features
|
||||
|
||||
* basic ipp 2.0 compatible Client
|
||||
* extended client for cups server
|
||||
* create custom ipp requests
|
||||
* parse ipp responses and ipp control files
|
||||
|
||||
## Examples
|
||||
|
||||
Print a file
|
||||
```go
|
||||
client := ipp.NewIPPClient("printserver", 631, "user", "password", true)
|
||||
client.PrintFile("/path/to/file", "my-printer", map[string]interface{}{})
|
||||
```
|
||||
|
||||
## Licence
|
||||
|
||||
Apache Licence Version 2.0
|
||||
|
||||
|
|
@ -0,0 +1,519 @@
|
|||
package ipp
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"fmt"
|
||||
"io"
|
||||
)
|
||||
|
||||
const (
|
||||
sizeInteger = int16(4)
|
||||
sizeBoolean = int16(1)
|
||||
)
|
||||
|
||||
type AttributeEncoder struct {
|
||||
writer io.Writer
|
||||
}
|
||||
|
||||
func NewAttributeEncoder(w io.Writer) *AttributeEncoder {
|
||||
return &AttributeEncoder{w}
|
||||
}
|
||||
|
||||
func (e *AttributeEncoder) Encode(attribute string, value interface{}) error {
|
||||
tag, ok := AttributeTagMapping[attribute]
|
||||
if !ok {
|
||||
return fmt.Errorf("cannot get tag of attribute %s", attribute)
|
||||
}
|
||||
|
||||
switch value.(type) {
|
||||
case int:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(value.(int))); err != nil {
|
||||
return err
|
||||
}
|
||||
case int16:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(value.(int16))); err != nil {
|
||||
return err
|
||||
}
|
||||
case int8:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(value.(int8))); err != nil {
|
||||
return err
|
||||
}
|
||||
case int32:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(value.(int32)); err != nil {
|
||||
return err
|
||||
}
|
||||
case int64:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(value.(int64))); err != nil {
|
||||
return err
|
||||
}
|
||||
case []int:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
for index, val := range value.([]int) {
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if index == 0 {
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if err := e.writeNullByte(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(val)); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
case []int16:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
for index, val := range value.([]int16) {
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if index == 0 {
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if err := e.writeNullByte(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(val)); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
case []int8:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
for index, val := range value.([]int8) {
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if index == 0 {
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if err := e.writeNullByte(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(val)); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
case []int32:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
for index, val := range value.([]int32) {
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if index == 0 {
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if err := e.writeNullByte(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(val); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
case []int64:
|
||||
if tag != TagInteger && tag != TagEnum {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
for index, val := range value.([]int64) {
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if index == 0 {
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if err := e.writeNullByte(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := e.encodeInteger(int32(val)); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
case bool:
|
||||
if tag != TagBoolean {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeBoolean(value.(bool)); err != nil {
|
||||
return err
|
||||
}
|
||||
case []bool:
|
||||
if tag != TagBoolean {
|
||||
return fmt.Errorf("tag for attribute %s does not match with value type", attribute)
|
||||
}
|
||||
|
||||
for index, val := range value.([]bool) {
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if index == 0 {
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if err := e.writeNullByte(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := e.encodeBoolean(val); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
case string:
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err := e.encodeString(value.(string)); err != nil {
|
||||
return err
|
||||
}
|
||||
case []string:
|
||||
for index, val := range value.([]string) {
|
||||
if err := e.encodeTag(tag); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if index == 0 {
|
||||
if err := e.encodeString(attribute); err != nil {
|
||||
return err
|
||||
}
|
||||
} else {
|
||||
if err := e.writeNullByte(); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
if err := e.encodeString(val); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
default:
|
||||
return fmt.Errorf("type %T is not supportet", value)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (e *AttributeEncoder) encodeString(s string) error {
|
||||
if err := binary.Write(e.writer, binary.BigEndian, int16(len(s))); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
_, err := e.writer.Write([]byte(s))
|
||||
return err
|
||||
}
|
||||
|
||||
func (e *AttributeEncoder) encodeInteger(i int32) error {
|
||||
if err := binary.Write(e.writer, binary.BigEndian, sizeInteger); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return binary.Write(e.writer, binary.BigEndian, i)
|
||||
}
|
||||
|
||||
func (e *AttributeEncoder) encodeBoolean(b bool) error {
|
||||
if err := binary.Write(e.writer, binary.BigEndian, sizeBoolean); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return binary.Write(e.writer, binary.BigEndian, b)
|
||||
}
|
||||
|
||||
func (e *AttributeEncoder) encodeTag(t Tag) error {
|
||||
return binary.Write(e.writer, binary.BigEndian, int8(t))
|
||||
}
|
||||
|
||||
func (e *AttributeEncoder) writeNullByte() error {
|
||||
return binary.Write(e.writer, binary.BigEndian, int16(0))
|
||||
}
|
||||
|
||||
type Attribute struct {
|
||||
Tag Tag
|
||||
Name string
|
||||
Value interface{}
|
||||
}
|
||||
|
||||
type AttributeDecoder struct {
|
||||
reader io.Reader
|
||||
}
|
||||
|
||||
func NewAttributeDecoder(r io.Reader) *AttributeDecoder {
|
||||
return &AttributeDecoder{r}
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) Decode(tag Tag) (*Attribute, error) {
|
||||
attr := Attribute{Tag: tag}
|
||||
|
||||
name, err := d.decodeString()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr.Name = name
|
||||
|
||||
switch attr.Tag {
|
||||
case TagEnum, TagInteger:
|
||||
val, err := d.decodeInteger()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr.Value = val
|
||||
case TagBoolean:
|
||||
val, err := d.decodeBool()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr.Value = val
|
||||
case TagDate:
|
||||
val, err := d.decodeDate()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr.Value = val
|
||||
case TagRange:
|
||||
val, err := d.decodeRange()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr.Value = val
|
||||
case TagResolution:
|
||||
val, err := d.decodeResolution()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr.Value = val
|
||||
default:
|
||||
val, err := d.decodeString()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
attr.Value = val
|
||||
}
|
||||
|
||||
return &attr, nil
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) decodeBool() (b bool, err error) {
|
||||
if _, err = d.readValueLength(); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if err = binary.Read(d.reader, binary.BigEndian, &b); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) decodeInteger() (i int, err error) {
|
||||
if _, err = d.readValueLength(); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
var reti int32
|
||||
if err = binary.Read(d.reader, binary.BigEndian, &reti); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return int(reti), nil
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) decodeString() (string, error) {
|
||||
length, err := d.readValueLength()
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
if length == 0 {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
bs := make([]byte, length)
|
||||
if _, err := d.reader.Read(bs); err != nil {
|
||||
return "", nil
|
||||
}
|
||||
|
||||
return string(bs), nil
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) decodeDate() ([]int, error) {
|
||||
length, err := d.readValueLength()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
is := make([]int, length)
|
||||
var ti uint8
|
||||
|
||||
for i := int16(0); i < length; i++ {
|
||||
if err = binary.Read(d.reader, binary.BigEndian, &ti); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
is[i] = int(ti)
|
||||
}
|
||||
|
||||
return is, nil
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) decodeRange() ([]int, error) {
|
||||
length, err := d.readValueLength()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// initialize range element count (c) and range slice (r)
|
||||
c := length / 4
|
||||
r := make([]int, c)
|
||||
|
||||
for i := int16(0); i < c; i++ {
|
||||
var ti int
|
||||
if err = binary.Read(d.reader, binary.BigEndian, &ti); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
r[i] = ti
|
||||
}
|
||||
|
||||
return r, nil
|
||||
}
|
||||
|
||||
type Resolution struct {
|
||||
Height int
|
||||
Width int
|
||||
Depth uint8
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) decodeResolution() (res Resolution, err error) {
|
||||
_, err = d.readValueLength()
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if err = binary.Read(d.reader, binary.BigEndian, &res.Height); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if err = binary.Read(d.reader, binary.BigEndian, &res.Width); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
if err = binary.Read(d.reader, binary.BigEndian, &res.Depth); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (d *AttributeDecoder) readValueLength() (length int16, err error) {
|
||||
err = binary.Read(d.reader, binary.BigEndian, &length)
|
||||
return
|
||||
}
|
||||
|
|
@ -0,0 +1,384 @@
|
|||
package ipp
|
||||
|
||||
type Status int8
|
||||
|
||||
const (
|
||||
StatusCupsInvalid Status = -1
|
||||
StatusOk = 0x0000
|
||||
StatusOkIgnoredOrSubstituted = 0x0001
|
||||
StatusOkConflicting = 0x0002
|
||||
statusOkIgnoredSubscriptions = 0x0003
|
||||
statusOkIgnoredNotifications = 0x0004
|
||||
statusOkTooManyEvents = 0x0005
|
||||
statusOkButCancelSubscription = 0x0006
|
||||
statusOkEventsComplete = 0x0007
|
||||
statusRedirectionOtherSite = 0x0200
|
||||
statusCupsSeeOther = 0x0280
|
||||
statusErrorBadRequest = 0x0400
|
||||
StatusErrorForbidden = 0x0401
|
||||
StatusErrorNotAuthenticated = 0x0402
|
||||
StatusErrorNotAuthorized = 0x0403
|
||||
StatusErrorNotPossible = 0x0404
|
||||
StatusErrorTimeout = 0x0405
|
||||
StatusErrorNotFound = 0x0406
|
||||
StatusErrorGone = 0x0407
|
||||
StatusErrorRequestEntity = 0x0408
|
||||
StatusErrorRequestValue = 0x0409
|
||||
StatusErrorDocumentFormatNotSupported = 0x040a
|
||||
StatusErrorAttributesOrValues = 0x040b
|
||||
StatusErrorUriScheme = 0x040c
|
||||
StatusErrorCharset = 0x040d
|
||||
StatusErrorConflicting = 0x040e
|
||||
StatusErrorCompressionError = 0x040f
|
||||
StatusErrorDocumentFormatError = 0x0410
|
||||
StatusErrorDocumentAccess = 0x0411
|
||||
StatusErrorAttributesNotSettable = 0x0412
|
||||
StatusErrorIgnoredAllSubscriptions = 0x0413
|
||||
StatusErrorTooManySubscriptions = 0x0414
|
||||
StatusErrorIgnoredAllNotifications = 0x0415
|
||||
StatusErrorPrintSupportFileNotFound = 0x0416
|
||||
StatusErrorDocumentPassword = 0x0417
|
||||
StatusErrorDocumentPermission = 0x0418
|
||||
StatusErrorDocumentSecurity = 0x0419
|
||||
StatusErrorDocumentUnprintable = 0x041a
|
||||
StatusErrorAccountInfoNeeded = 0x041b
|
||||
StatusErrorAccountClosed = 0x041c
|
||||
StatusErrorAccountLimitReached = 0x041d
|
||||
StatusErrorAccountAuthorizationFailed = 0x041e
|
||||
StatusErrorNotFetchable = 0x041f
|
||||
StatusErrorCupsAccountInfoNeeded = 0x049C
|
||||
StatusErrorCupsAccountClosed = 0x049d
|
||||
StatusErrorCupsAccountLimitReached = 0x049e
|
||||
StatusErrorCupsAccountAuthorizationFailed = 0x049f
|
||||
StatusErrorInternal = 0x0500
|
||||
StatusErrorOperationNotSupported = 0x0501
|
||||
StatusErrorServiceUnavailable = 0x0502
|
||||
StatusErrorVersionNotSupported = 0x0503
|
||||
StatusErrorDevice = 0x0504
|
||||
StatusErrorTemporary = 0x0505
|
||||
StatusErrorNotAcceptingJobs = 0x0506
|
||||
StatusErrorBusy = 0x0507
|
||||
StatusErrorJobCanceled = 0x0508
|
||||
StatusErrorMultipleJobsNotSupported = 0x0509
|
||||
StatusErrorPrinterIsDeactivated = 0x050a
|
||||
StatusErrorTooManyJobs = 0x050b
|
||||
StatusErrorTooManyDocuments = 0x050c
|
||||
StatusErrorCupsAuthenticationCanceled = 0x1000
|
||||
StatusErrorCupsPki = 0x1001
|
||||
StatusErrorCupsUpgradeRequired = 0x1002
|
||||
)
|
||||
|
||||
type Operation int16
|
||||
|
||||
const (
|
||||
OperationCupsInvalid Operation = -0x0001
|
||||
OperationCupsNone = 0x0000
|
||||
OperationPrintJob = 0x0002
|
||||
OperationPrintUri = 0x0003
|
||||
OperationValidateJob = 0x0004
|
||||
OperationCreateJob = 0x0005
|
||||
OperationSendDocument = 0x0006
|
||||
OperationSendUri = 0x0007
|
||||
OperationCancelJob = 0x0008
|
||||
OperationGetJobAttributes = 0x0009
|
||||
OperationGetJobs = 0x000a
|
||||
OperationGetPrinterAttributes = 0x000b
|
||||
OperationHoldJob = 0x000c
|
||||
OperationReleaseJob = 0x000d
|
||||
OperationRestartJob = 0x000e
|
||||
OperationPausePrinter = 0x0010
|
||||
OperationResumePrinter = 0x0011
|
||||
OperationPurgeJobs = 0x0012
|
||||
OperationSetPrinterAttributes = 0x0013
|
||||
OperationSetJobAttributes = 0x0014
|
||||
OperationGetPrinterSupportedValues = 0x0015
|
||||
OperationCreatePrinterSubscriptions = 0x0016
|
||||
OperationCreateJobSubscriptions = 0x0017
|
||||
OperationGetSubscriptionAttributes = 0x0018
|
||||
OperationGetSubscriptions = 0x0019
|
||||
OperationRenewSubscription = 0x001a
|
||||
OperationCancelSubscription = 0x001b
|
||||
OperationGetNotifications = 0x001c
|
||||
OperationSendNotifications = 0x001d
|
||||
OperationGetResourceAttributes = 0x001e
|
||||
OperationGetResourceData = 0x001f
|
||||
OperationGetResources = 0x0020
|
||||
OperationGetPrintSupportFiles = 0x0021
|
||||
OperationEnablePrinter = 0x0022
|
||||
OperationDisablePrinter = 0x0023
|
||||
OperationPausePrinterAfterCurrentJob = 0x0024
|
||||
OperationHoldNewJobs = 0x0025
|
||||
OperationReleaseHeldNewJobs = 0x0026
|
||||
OperationDeactivatePrinter = 0x0027
|
||||
OperationActivatePrinter = 0x0028
|
||||
OperationRestartPrinter = 0x0029
|
||||
OperationShutdownPrinter = 0x002a
|
||||
OperationStartupPrinter = 0x002b
|
||||
OperationReprocessJob = 0x002c
|
||||
OperationCancelCurrentJob = 0x002d
|
||||
OperationSuspendCurrentJob = 0x002e
|
||||
OperationResumeJob = 0x002f
|
||||
OperationOperationPromoteJob = 0x0030
|
||||
OperationScheduleJobAfter = 0x0031
|
||||
OperationCancelDocument = 0x0033
|
||||
OperationGetDocumentAttributes = 0x0034
|
||||
OperationGetDocuments = 0x0035
|
||||
OperationDeleteDocument = 0x0036
|
||||
OperationSetDocumentAttributes = 0x0037
|
||||
OperationCancelJobs = 0x0038
|
||||
OperationCancelMyJobs = 0x0039
|
||||
OperationResubmitJob = 0x003a
|
||||
OperationCloseJob = 0x003b
|
||||
OperationIdentifyPrinter = 0x003c
|
||||
OperationValidateDocument = 0x003d
|
||||
OperationAddDocumentImages = 0x003e
|
||||
OperationAcknowledgeDocument = 0x003f
|
||||
OperationAcknowledgeIdentifyPrinter = 0x0040
|
||||
OperationAcknowledgeJob = 0x0041
|
||||
OperationFetchDocument = 0x0042
|
||||
OperationFetchJob = 0x0043
|
||||
OperationGetOutputDeviceAttributes = 0x0044
|
||||
OperationUpdateActiveJobs = 0x0045
|
||||
OperationDeregisterOutputDevice = 0x0046
|
||||
OperationUpdateDocumentStatus = 0x0047
|
||||
OperationUpdateJobStatus = 0x0048
|
||||
OperationUpdateOutputDeviceAttributes = 0x0049
|
||||
OperationGetNextDocumentData = 0x004a
|
||||
OperationAllocatePrinterResources = 0x004b
|
||||
OperationCreatePrinter = 0x004c
|
||||
OperationDeallocatePrinterResources = 0x004d
|
||||
OperationDeletePrinter = 0x004e
|
||||
OperationGetPrinters = 0x004f
|
||||
OperationShutdownOnePrinter = 0x0050
|
||||
OperationStartupOnePrinter = 0x0051
|
||||
OperationCancelResource = 0x0052
|
||||
OperationCreateResource = 0x0053
|
||||
OperationInstallResource = 0x0054
|
||||
OperationSendResourceData = 0x0055
|
||||
OperationSetResourceAttributes = 0x0056
|
||||
OperationCreateResourceSubscriptions = 0x0057
|
||||
OperationCreateSystemSubscriptions = 0x0058
|
||||
OperationDisableAllPrinters = 0x0059
|
||||
OperationEnableAllPrinters = 0x005a
|
||||
OperationGetSystemAttributes = 0x005b
|
||||
OperationGetSystemSupportedValues = 0x005c
|
||||
OperationPauseAllPrinters = 0x005d
|
||||
OperationPauseAllPrintersAfterCurrentJob = 0x005e
|
||||
OperationRegisterOutputDevice = 0x005f
|
||||
OperationRestartSystem = 0x0060
|
||||
OperationResumeAllPrinters = 0x0061
|
||||
OperationSetSystemAttributes = 0x0062
|
||||
OperationShutdownAllPrinter = 0x0063
|
||||
OperationStartupAllPrinters = 0x0064
|
||||
OperationPrivate = 0x4000
|
||||
OperationCupsGetDefault = 0x4001
|
||||
OperationCupsGetPrinters = 0x4002
|
||||
OperationCupsAddModifyPrinter = 0x4003
|
||||
OperationCupsDeletePrinter = 0x4004
|
||||
OperationCupsGetClasses = 0x4005
|
||||
OperationCupsAddModifyClass = 0x4006
|
||||
OperationCupsDeleteClass = 0x4007
|
||||
OperationCupsAcceptJobs = 0x4008
|
||||
OperationCupsRejectJobs = 0x4009
|
||||
OperationCupsSetDefault = 0x400a
|
||||
OperationCupsGetDevices = 0x400b
|
||||
OperationCupsGetPpds = 0x400c
|
||||
OperationCupsMoveJob = 0x400d
|
||||
OperationCupsAuthenticateJob = 0x400e
|
||||
OperationCupsGetPpd = 0x400f
|
||||
OperationCupsGetDocument = 0x4027
|
||||
OperationCupsCreateLocalPrinter = 0x4028
|
||||
)
|
||||
|
||||
type Tag int8
|
||||
|
||||
const (
|
||||
TagCupsInvalid Tag = -1
|
||||
TagZero = 0x00
|
||||
TagOperation = 0x01
|
||||
TagJob = 0x02
|
||||
TagEnd = 0x03
|
||||
TagPrinter = 0x04
|
||||
TagUnsupportedGroup = 0x05
|
||||
TagSubscription = 0x06
|
||||
TagEventNotification = 0x07
|
||||
TagResource = 0x08
|
||||
TagDocument = 0x09
|
||||
TagSystem = 0x0a
|
||||
TagUnsupportedValue = 0x10
|
||||
TagDefault = 0x11
|
||||
TagUnknown = 0x12
|
||||
TagNoValue = 0x013
|
||||
TagNotSettable = 0x15
|
||||
TagDeleteAttr = 0x16
|
||||
TagAdminDefine = 0x17
|
||||
TagInteger = 0x21
|
||||
TagBoolean = 0x22
|
||||
TagEnum = 0x23
|
||||
TagString = 0x30
|
||||
TagDate = 0x31
|
||||
TagResolution = 0x32
|
||||
TagRange = 0x33
|
||||
TagBeginCollection = 0x34
|
||||
TagTextLang = 0x35
|
||||
TagNameLang = 0x36
|
||||
TagEndCollection = 0x37
|
||||
TagText = 0x41
|
||||
TagName = 0x42
|
||||
TagReservedString = 0x43
|
||||
TagKeyword = 0x44
|
||||
TagUri = 0x45
|
||||
TagUriScheme = 0x46
|
||||
TagCharset = 0x47
|
||||
TagLanguage = 0x48
|
||||
TagMimeType = 0x49
|
||||
TagMemberName = 0x4a
|
||||
TagExtension = 0x7f
|
||||
TagCupsMask = 0x7fffffff
|
||||
TagCupsConst = -0x7fffffff - 1
|
||||
)
|
||||
|
||||
type JobState uint8
|
||||
|
||||
const (
|
||||
JobStatePending JobState = 0x03
|
||||
JobStateHeld = 0x04
|
||||
JobStateProcessing = 0x05
|
||||
JobStateStopped = 0x06
|
||||
JobStateCanceled = 0x07
|
||||
JobStateAborted = 0x08
|
||||
JobStateCompleted = 0x09
|
||||
)
|
||||
|
||||
type DocumentState uint8
|
||||
|
||||
const (
|
||||
DocumentStatePending DocumentState = 0x03
|
||||
DocumentStateProcessing = 0x05
|
||||
DocumentStateCanceled = 0x07
|
||||
DocumentStateAborted = 0x08
|
||||
DocumentStateCompleted = 0x08
|
||||
)
|
||||
|
||||
type PrinterState uint8
|
||||
|
||||
const (
|
||||
PrinterStateIdle PrinterState = 0x0003
|
||||
PrinterStateProcessing = 0x0004
|
||||
PrinterStateStopped = 0x0005
|
||||
)
|
||||
|
||||
type JobStateFilter string
|
||||
|
||||
const (
|
||||
JobStateFilterNotCompleted = "not-completed"
|
||||
JobStateFilterCompleted = "completed"
|
||||
JobStateFilterAll = "all"
|
||||
)
|
||||
|
||||
type ErrorPolicy string
|
||||
|
||||
const (
|
||||
ErrorPolicyRetryJob ErrorPolicy = "retry-job"
|
||||
ErrorPolicyAbortJob = "abort-job"
|
||||
ErrorPolicyRetryCurrentJob = "retry-current-job"
|
||||
ErrorPolicyStopPrinter = "stop-printer"
|
||||
)
|
||||
|
||||
const (
|
||||
CharsetLanguage = "en-US"
|
||||
Charset = "utf-8"
|
||||
ProtocolVersionMajor = uint8(2)
|
||||
ProtocolVersionMinor = uint8(0)
|
||||
|
||||
DefaultJobPriority = 50
|
||||
|
||||
MimeTypePostscript = "application/postscript"
|
||||
MimeTypeOctetStream = "application/octet-stream"
|
||||
)
|
||||
|
||||
const (
|
||||
OperationAttributeCopies string = "copies"
|
||||
OperationAttributeDocumentFormat = "document-format"
|
||||
OperationAttributeDocumentName = "document-name"
|
||||
OperationAttributeJobID = "job-id"
|
||||
OperationAttributeJobName = "job-name"
|
||||
OperationAttributeJobPriority = "job-priority"
|
||||
OperationAttributeJobURI = "job-uri"
|
||||
OperationAttributeLastDocument = "last-document"
|
||||
OperationAttributeMyJobs = "my-jobs"
|
||||
OperationAttributePPDName = "ppd-name"
|
||||
OperationAttributePrinterIsShared = "printer-is-shared"
|
||||
OperationAttributePrinterURI = "printer-uri"
|
||||
OperationAttributePurgeJobs = "purge-jobs"
|
||||
OperationAttributeRequestedAttributes = "requested-attributes"
|
||||
OperationAttributeRequestingUserName = "requesting-user-name"
|
||||
OperationAttributeWhichJobs = "which-jobs"
|
||||
OperationAttributeFirstJobID = "first-job-id"
|
||||
OperationAttributeLimit = "limit"
|
||||
)
|
||||
|
||||
const (
|
||||
PrinterAttributeDeviceURI string = "device-uri"
|
||||
PrinterAttributeHoldJobUntil = "job-hold-until"
|
||||
PrinterAttributePrinterErrorPolicy = "printer-error-policy"
|
||||
PrinterAttributePrinterInfo = "printer-info"
|
||||
PrinterAttributePrinterLocation = "printer-location"
|
||||
PrinterAttributePrinterName = "printer-name"
|
||||
PrinterAttributePrinterStateReason = "printer-state-reason"
|
||||
PrinterAttributeJobPrinterURI = "job-printer-uri"
|
||||
PrinterAttributeMemberURIs = "member-uris"
|
||||
)
|
||||
|
||||
var (
|
||||
DefaultClassAttributes = []string{"printer-name", "member-names"}
|
||||
DefaultPrinterAttributes = []string{"printer-name", "printer-type", "printer-location", "printer-info",
|
||||
"printer-make-and-model", "printer-state", "printer-state-message", "printer-state-reason",
|
||||
"printer-uri-supported", "device-uri", "printer-is-shared"}
|
||||
DefaultJobAttributes = []string{"job-id", "job-name", "printer-uri", "job-state", "job-state-reasons",
|
||||
"job-hold-until", "job-media-progress", "job-k-octets", "number-of-documents", "copies",
|
||||
"job-originating-user-name"}
|
||||
|
||||
AttributeTagMapping = map[string]Tag{
|
||||
"attributes-charset": TagCharset,
|
||||
"attributes-natural-language": TagLanguage,
|
||||
"copies": TagInteger,
|
||||
"device-uri": TagUri,
|
||||
"document-format": TagMimeType,
|
||||
"document-name": TagName,
|
||||
"document-number": TagInteger,
|
||||
"document-state": TagEnum,
|
||||
"finishings": TagEnum,
|
||||
"hold-job-until": TagKeyword,
|
||||
"job-hold-until": TagKeyword,
|
||||
"job-id": TagInteger,
|
||||
"job-name": TagName,
|
||||
"job-printer-uri": TagUri,
|
||||
"job-priority": TagInteger,
|
||||
"job-sheets": TagName,
|
||||
"job-state": TagEnum,
|
||||
"job-state-reason": TagKeyword,
|
||||
"job-uri": TagUri,
|
||||
"last-document": TagBoolean,
|
||||
"media": TagKeyword,
|
||||
"member-uris": TagUri,
|
||||
"my-jobs": TagBoolean,
|
||||
"number-up": TagInteger,
|
||||
"orientation-requested": TagEnum,
|
||||
"ppd-name": TagName,
|
||||
"print-quality": TagEnum,
|
||||
"printer-error-policy": TagName,
|
||||
"printer-info": TagText,
|
||||
"printer-is-shared": TagBoolean,
|
||||
"printer-location": TagText,
|
||||
"printer-resolution": TagResolution,
|
||||
"printer-state": TagEnum,
|
||||
"printer-state-reason": TagKeyword,
|
||||
"printer-uri": TagUri,
|
||||
"purge-jobs": TagBoolean,
|
||||
"requested-attributes": TagKeyword,
|
||||
"requesting-user-name": TagName,
|
||||
"which-jobs": TagKeyword,
|
||||
"first-job-id": TagInteger,
|
||||
}
|
||||
)
|
||||
|
|
@ -0,0 +1,271 @@
|
|||
package ipp
|
||||
|
||||
import "strings"
|
||||
|
||||
type CUPSClient struct {
|
||||
*IPPClient
|
||||
}
|
||||
|
||||
func NewCUPSClient(host string, port int, username, password string, useTLS bool) *CUPSClient {
|
||||
ippClient := NewIPPClient(host, port, username, password, useTLS)
|
||||
return &CUPSClient{ippClient}
|
||||
}
|
||||
|
||||
func (c *CUPSClient) GetDevices() (map[string]Attributes, error) {
|
||||
req := NewRequest(OperationCupsGetDevices, 1)
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("", nil), req, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
printerNameMap := make(map[string]Attributes)
|
||||
|
||||
for _, printerAttributes := range resp.Printers {
|
||||
printerNameMap[printerAttributes[PrinterAttributeDeviceURI][0].Value.(string)] = printerAttributes
|
||||
}
|
||||
|
||||
return printerNameMap, nil
|
||||
}
|
||||
|
||||
func (c *CUPSClient) MoveJob(jobID int, destPrinter string) error {
|
||||
req := NewRequest(OperationCupsMoveJob, 1)
|
||||
req.OperationAttributes[OperationAttributeJobURI] = c.getJobUri(jobID)
|
||||
req.PrinterAttributes[PrinterAttributeJobPrinterURI] = c.getPrinterUri(destPrinter)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("jobs", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) MoveAllJob(srcPrinter, destPrinter string) error {
|
||||
req := NewRequest(OperationCupsMoveJob, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(srcPrinter)
|
||||
req.PrinterAttributes[PrinterAttributeJobPrinterURI] = c.getPrinterUri(destPrinter)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("jobs", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) GetPPDs() (map[string]Attributes, error) {
|
||||
req := NewRequest(OperationCupsGetPpds, 1)
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("", nil), req, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
ppdNameMap := make(map[string]Attributes)
|
||||
|
||||
for _, printerAttributes := range resp.Printers {
|
||||
ppdNameMap[printerAttributes[OperationAttributePPDName][0].Value.(string)] = printerAttributes
|
||||
}
|
||||
|
||||
return ppdNameMap, nil
|
||||
}
|
||||
|
||||
func (c *CUPSClient) AcceptJobs(printer string) error {
|
||||
req := NewRequest(OperationCupsAcceptJobs, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) RejectJobs(printer string) error {
|
||||
req := NewRequest(OperationCupsRejectJobs, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) AddPrinterToClass(class, printer string) error {
|
||||
attributes, err := c.GetPrinterAttributes(class, []string{PrinterAttributeMemberURIs})
|
||||
if err != nil && !IsNotExistsError(err) {
|
||||
return err
|
||||
}
|
||||
|
||||
memberURIList := make([]string, 0)
|
||||
|
||||
if !IsNotExistsError(err) {
|
||||
for _, member := range attributes[PrinterAttributeMemberURIs] {
|
||||
memberString := strings.Split(member.Value.(string), "/")
|
||||
printerName := memberString[len(memberString)-1]
|
||||
|
||||
if printerName == printer {
|
||||
return nil
|
||||
}
|
||||
|
||||
memberURIList = append(memberURIList, member.Value.(string))
|
||||
}
|
||||
}
|
||||
|
||||
memberURIList = append(memberURIList, c.getPrinterUri(printer))
|
||||
|
||||
req := NewRequest(OperationCupsAddModifyClass, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getClassUri(class)
|
||||
req.PrinterAttributes[PrinterAttributeMemberURIs] = memberURIList
|
||||
|
||||
_, err = c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) DeletePrinterFromClass(class, printer string) error {
|
||||
attributes, err := c.GetPrinterAttributes(class, []string{PrinterAttributeMemberURIs})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
memberURIList := make([]string, 0)
|
||||
|
||||
for _, member := range attributes[PrinterAttributeMemberURIs] {
|
||||
memberString := strings.Split(member.Value.(string), "/")
|
||||
printerName := memberString[len(memberString)-1]
|
||||
|
||||
if printerName != printer {
|
||||
memberURIList = append(memberURIList, member.Value.(string))
|
||||
}
|
||||
}
|
||||
|
||||
if len(memberURIList) == 0 {
|
||||
return c.DeleteClass(class)
|
||||
}
|
||||
|
||||
req := NewRequest(OperationCupsAddModifyClass, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getClassUri(class)
|
||||
req.PrinterAttributes[PrinterAttributeMemberURIs] = memberURIList
|
||||
|
||||
_, err = c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) DeleteClass(class string) error {
|
||||
req := NewRequest(OperationCupsDeleteClass, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getClassUri(class)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) CreatePrinter(name, deviceURI, ppd string, shared bool, errorPolicy ErrorPolicy, information, location string) error {
|
||||
req := NewRequest(OperationCupsAddModifyPrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(name)
|
||||
req.OperationAttributes[OperationAttributePPDName] = ppd
|
||||
req.OperationAttributes[OperationAttributePrinterIsShared] = shared
|
||||
req.PrinterAttributes[PrinterAttributePrinterStateReason] = "none"
|
||||
req.PrinterAttributes[PrinterAttributeDeviceURI] = deviceURI
|
||||
req.PrinterAttributes[PrinterAttributePrinterInfo] = information
|
||||
req.PrinterAttributes[PrinterAttributePrinterLocation] = location
|
||||
req.PrinterAttributes[PrinterAttributePrinterErrorPolicy] = string(errorPolicy)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) SetPrinterPPD(printer, ppd string) error {
|
||||
req := NewRequest(OperationCupsAddModifyPrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.OperationAttributes[OperationAttributePPDName] = ppd
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) SetPrinterDeviceURI(printer, deviceURI string) error {
|
||||
req := NewRequest(OperationCupsAddModifyPrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.PrinterAttributes[PrinterAttributeDeviceURI] = deviceURI
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) SetPrinterIsShared(printer string, shared bool) error {
|
||||
req := NewRequest(OperationCupsAddModifyPrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.OperationAttributes[OperationAttributePrinterIsShared] = shared
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) SetPrinterErrorPolicy(printer string, errorPolicy ErrorPolicy) error {
|
||||
req := NewRequest(OperationCupsAddModifyPrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.PrinterAttributes[PrinterAttributePrinterErrorPolicy] = string(errorPolicy)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) SetPrinterInformation(printer, information string) error {
|
||||
req := NewRequest(OperationCupsAddModifyPrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.PrinterAttributes[PrinterAttributePrinterInfo] = information
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) SetPrinterLocation(printer, location string) error {
|
||||
req := NewRequest(OperationCupsAddModifyPrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.PrinterAttributes[PrinterAttributePrinterLocation] = location
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) DeletePrinter(printer string) error {
|
||||
req := NewRequest(OperationCupsDeletePrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *CUPSClient) GetPrinters(attributes []string) (map[string]Attributes, error) {
|
||||
req := NewRequest(OperationCupsGetPrinters, 1)
|
||||
|
||||
if attributes == nil {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = DefaultPrinterAttributes
|
||||
} else {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = append(attributes, PrinterAttributePrinterName)
|
||||
}
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("", nil), req, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
printerNameMap := make(map[string]Attributes)
|
||||
|
||||
for _, printerAttributes := range resp.Printers {
|
||||
printerNameMap[printerAttributes[PrinterAttributePrinterName][0].Value.(string)] = printerAttributes
|
||||
}
|
||||
|
||||
return printerNameMap, nil
|
||||
}
|
||||
|
||||
func (c *CUPSClient) GetClasses(attributes []string) (map[string]Attributes, error) {
|
||||
req := NewRequest(OperationCupsGetClasses, 1)
|
||||
|
||||
if attributes == nil {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = DefaultClassAttributes
|
||||
} else {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = append(attributes, PrinterAttributePrinterName)
|
||||
}
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("", nil), req, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
printerNameMap := make(map[string]Attributes)
|
||||
|
||||
for _, printerAttributes := range resp.Printers {
|
||||
printerNameMap[printerAttributes[PrinterAttributePrinterName][0].Value.(string)] = printerAttributes
|
||||
}
|
||||
|
||||
return printerNameMap, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
package ipp
|
||||
|
||||
func IsNotExistsError(err error) bool {
|
||||
if err == nil {
|
||||
return false
|
||||
}
|
||||
|
||||
return err.Error() == "The printer or class does not exist."
|
||||
}
|
||||
|
|
@ -0,0 +1,3 @@
|
|||
module github.com/phin1x/go-ipp
|
||||
|
||||
go 1.13
|
||||
|
|
@ -0,0 +1,424 @@
|
|||
package ipp
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"crypto/tls"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
"net/http"
|
||||
"os"
|
||||
"path"
|
||||
"strconv"
|
||||
)
|
||||
|
||||
const (
|
||||
ippContentType = "application/ipp"
|
||||
)
|
||||
|
||||
type Document struct {
|
||||
Document io.Reader
|
||||
Size int
|
||||
Name string
|
||||
MimeType string
|
||||
}
|
||||
|
||||
type IPPClient struct {
|
||||
host string
|
||||
port int
|
||||
username string
|
||||
password string
|
||||
useTLS bool
|
||||
|
||||
client *http.Client
|
||||
}
|
||||
|
||||
func NewIPPClient(host string, port int, username, password string, useTLS bool) *IPPClient {
|
||||
httpClient := http.Client{
|
||||
Transport: &http.Transport{
|
||||
TLSClientConfig: &tls.Config{
|
||||
InsecureSkipVerify: true,
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
return &IPPClient{host, port, username, password, useTLS, &httpClient}
|
||||
}
|
||||
|
||||
func (c *IPPClient) getHttpUri(namespace string, object interface{}) string {
|
||||
proto := "http"
|
||||
if c.useTLS {
|
||||
proto = "https"
|
||||
}
|
||||
|
||||
uri := fmt.Sprintf("%s://%s:%d", proto, c.host, c.port)
|
||||
|
||||
if namespace != "" {
|
||||
uri = fmt.Sprintf("%s/%s", uri, namespace)
|
||||
}
|
||||
|
||||
if object != nil {
|
||||
uri = fmt.Sprintf("%s/%v", uri, object)
|
||||
}
|
||||
|
||||
return uri
|
||||
}
|
||||
|
||||
func (c *IPPClient) getPrinterUri(printer string) string {
|
||||
return fmt.Sprintf("ipp://localhost/printers/%s", printer)
|
||||
}
|
||||
|
||||
func (c *IPPClient) getJobUri(jobID int) string {
|
||||
return fmt.Sprintf("ipp://localhost/jobs/%d", jobID)
|
||||
}
|
||||
|
||||
func (c *IPPClient) getClassUri(printer string) string {
|
||||
return fmt.Sprintf("ipp://localhost/classes/%s", printer)
|
||||
}
|
||||
|
||||
func (c *IPPClient) SendRequest(url string, req *Request, additionalResponseData io.Writer) (*Response, error) {
|
||||
payload, err := req.Encode()
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
var body io.Reader
|
||||
size := len(payload)
|
||||
|
||||
if req.File != nil && req.FileSize != -1 {
|
||||
size += int(req.FileSize)
|
||||
|
||||
body = io.MultiReader(bytes.NewBuffer(payload), req.File)
|
||||
} else {
|
||||
body = bytes.NewBuffer(payload)
|
||||
}
|
||||
|
||||
httpReq, err := http.NewRequest("POST", url, body)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
httpReq.Header.Set("Content-Length", strconv.Itoa(size))
|
||||
httpReq.Header.Set("Content-Type", ippContentType)
|
||||
|
||||
if c.username != "" && c.password != "" {
|
||||
httpReq.SetBasicAuth(c.username, c.password)
|
||||
}
|
||||
|
||||
httpResp, err := c.client.Do(httpReq)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer httpResp.Body.Close()
|
||||
|
||||
if httpResp.StatusCode != 200 {
|
||||
return nil, fmt.Errorf("ipp server returned with http status code %d", httpResp.StatusCode)
|
||||
}
|
||||
|
||||
//read the response into a temp buffer due to some wired EOF errors
|
||||
httpBody, _ := ioutil.ReadAll(httpResp.Body)
|
||||
//fmt.Println(httpBody)
|
||||
return NewResponseDecoder(bytes.NewBuffer(httpBody)).Decode(additionalResponseData)
|
||||
|
||||
//return NewResponseDecoder(httpResp.Body).Decode()
|
||||
}
|
||||
|
||||
// Print one or more `Document`s using IPP `Create-Job` followed by `Send-Document` request(s).
|
||||
func (c *IPPClient) PrintDocuments(docs []Document, printer string, jobAttributes map[string]interface{}) (int, error) {
|
||||
printerURI := c.getPrinterUri(printer)
|
||||
|
||||
req := NewRequest(OperationCreateJob, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = printerURI
|
||||
req.OperationAttributes[OperationAttributeRequestingUserName] = c.username
|
||||
|
||||
// set defaults for some attributes, may get overwritten
|
||||
req.OperationAttributes[OperationAttributeJobName] = docs[0].Name
|
||||
req.OperationAttributes[OperationAttributeCopies] = 1
|
||||
req.OperationAttributes[OperationAttributeJobPriority] = DefaultJobPriority
|
||||
|
||||
for key, value := range jobAttributes {
|
||||
req.JobAttributes[key] = value
|
||||
}
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("printers", printer), req, nil)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
|
||||
if len(resp.Jobs) == 0 {
|
||||
return 0, errors.New("server doesn't returned a job id")
|
||||
}
|
||||
|
||||
jobID := resp.Jobs[0][OperationAttributeJobID][0].Value.(int)
|
||||
|
||||
documentCount := len(docs) - 1
|
||||
|
||||
for docID, doc := range docs {
|
||||
req = NewRequest(OperationSendDocument, 2)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = printerURI
|
||||
req.OperationAttributes[OperationAttributeRequestingUserName] = c.username
|
||||
req.OperationAttributes[OperationAttributeJobID] = jobID
|
||||
req.OperationAttributes[OperationAttributeDocumentName] = doc.Name
|
||||
req.OperationAttributes[OperationAttributeDocumentFormat] = doc.MimeType
|
||||
req.OperationAttributes[OperationAttributeLastDocument] = docID == documentCount
|
||||
req.File = doc.Document
|
||||
req.FileSize = doc.Size
|
||||
|
||||
_, err = c.SendRequest(c.getHttpUri("printers", printer), req, nil)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
}
|
||||
|
||||
return jobID, nil
|
||||
}
|
||||
|
||||
// Print a `Document` using an IPP `Print-Job` request.
|
||||
//
|
||||
// `jobAttributes` can contain arbitrary key/value pairs to control the way in which the
|
||||
// document is printed. [RFC 2911 § 4.2](https://tools.ietf.org/html/rfc2911#section-4.2)
|
||||
// defines some useful attributes:
|
||||
//
|
||||
// * [`job-priority`](https://tools.ietf.org/html/rfc2911#section-4.2.1): an integer between 1-100
|
||||
// * [`copies`](https://tools.ietf.org/html/rfc2911#section-4.2.5): a positive integer
|
||||
// * [`finishings`](https://tools.ietf.org/html/rfc2911#section-4.2.6): an enumeration
|
||||
// * [`number-up`](https://tools.ietf.org/html/rfc2911#section-4.2.9): a positive integer
|
||||
// * [`orientation-requested`](https://tools.ietf.org/html/rfc2911#section-4.2.10): an enumeration
|
||||
// * [`media`](https://tools.ietf.org/html/rfc2911#section-4.2.11): a string
|
||||
// * [`printer-resolution`](https://tools.ietf.org/html/rfc2911#section-4.2.12): a `Resolution`
|
||||
// * [`print-quality`](https://tools.ietf.org/html/rfc2911#section-4.2.13): an enumeration
|
||||
//
|
||||
// Your print system may provide other attributes. Define custom attributes as needed in
|
||||
// `AttributeTagMapping` and provide values here.
|
||||
func (c *IPPClient) PrintJob(doc Document, printer string, jobAttributes map[string]interface{}) (int, error) {
|
||||
printerURI := c.getPrinterUri(printer)
|
||||
|
||||
req := NewRequest(OperationPrintJob, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = printerURI
|
||||
req.OperationAttributes[OperationAttributeRequestingUserName] = c.username
|
||||
req.OperationAttributes[OperationAttributeJobName] = doc.Name
|
||||
req.OperationAttributes[OperationAttributeDocumentFormat] = doc.MimeType
|
||||
|
||||
// set defaults for some attributes, may get overwritten
|
||||
req.OperationAttributes[OperationAttributeCopies] = 1
|
||||
req.OperationAttributes[OperationAttributeJobPriority] = DefaultJobPriority
|
||||
|
||||
for key, value := range jobAttributes {
|
||||
req.JobAttributes[key] = value
|
||||
}
|
||||
|
||||
req.File = doc.Document
|
||||
req.FileSize = doc.Size
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("printers", printer), req, nil)
|
||||
if err != nil {
|
||||
return -1, err
|
||||
}
|
||||
|
||||
if len(resp.Jobs) == 0 {
|
||||
return 0, errors.New("server doesn't returned a job id")
|
||||
}
|
||||
|
||||
jobID := resp.Jobs[0][OperationAttributeJobID][0].Value.(int)
|
||||
|
||||
return jobID, nil
|
||||
}
|
||||
|
||||
func (c *IPPClient) PrintFile(filePath, printer string, jobAttributes map[string]interface{}) (int, error) {
|
||||
fileStats, err := os.Stat(filePath)
|
||||
if os.IsNotExist(err) {
|
||||
return -1, err
|
||||
}
|
||||
|
||||
fileName := path.Base(filePath)
|
||||
|
||||
document, err := os.Open(filePath)
|
||||
if err != nil {
|
||||
return 0, err
|
||||
}
|
||||
defer document.Close()
|
||||
|
||||
jobAttributes[OperationAttributeJobName] = fileName
|
||||
|
||||
return c.PrintDocuments([]Document{
|
||||
{
|
||||
Document: document,
|
||||
Name: fileName,
|
||||
Size: int(fileStats.Size()),
|
||||
MimeType: MimeTypeOctetStream,
|
||||
},
|
||||
}, printer, jobAttributes)
|
||||
}
|
||||
|
||||
func (c *IPPClient) GetPrinterAttributes(printer string, attributes []string) (Attributes, error) {
|
||||
req := NewRequest(OperationGetPrinterAttributes, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.OperationAttributes[OperationAttributeRequestingUserName] = c.username
|
||||
|
||||
if attributes == nil {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = DefaultPrinterAttributes
|
||||
} else {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = attributes
|
||||
}
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("printers", printer), req, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(resp.Printers) == 0 {
|
||||
return nil, errors.New("server doesn't return any printer attributes")
|
||||
}
|
||||
|
||||
return resp.Printers[0], nil
|
||||
}
|
||||
|
||||
func (c *IPPClient) ResumePrinter(printer string) error {
|
||||
req := NewRequest(OperationResumePrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *IPPClient) PausePrinter(printer string) error {
|
||||
req := NewRequest(OperationPausePrinter, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *IPPClient) GetJobAttributes(jobID int, attributes []string) (Attributes, error) {
|
||||
req := NewRequest(OperationGetJobAttributes, 1)
|
||||
req.OperationAttributes[OperationAttributeJobURI] = c.getJobUri(jobID)
|
||||
|
||||
if attributes == nil {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = DefaultJobAttributes
|
||||
} else {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = attributes
|
||||
}
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("jobs", jobID), req, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(resp.Printers) == 0 {
|
||||
return nil, errors.New("server doesn't return any job attributes")
|
||||
}
|
||||
|
||||
return resp.Printers[0], nil
|
||||
}
|
||||
|
||||
func (c *IPPClient) GetJobs(printer, class string, whichJobs JobStateFilter, myJobs bool, firstJobId, limit int, attributes []string) (map[int]Attributes, error) {
|
||||
req := NewRequest(OperationGetJobs, 1)
|
||||
req.OperationAttributes[OperationAttributeWhichJobs] = string(whichJobs)
|
||||
req.OperationAttributes[OperationAttributeMyJobs] = myJobs
|
||||
|
||||
if printer != "" {
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
} else if class != "" {
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getClassUri(printer)
|
||||
} else {
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = "ipp://localhost/"
|
||||
}
|
||||
|
||||
if firstJobId > 0 {
|
||||
req.OperationAttributes[OperationAttributeFirstJobID] = firstJobId
|
||||
}
|
||||
|
||||
if limit > 0 {
|
||||
req.OperationAttributes[OperationAttributeLimit] = limit
|
||||
}
|
||||
|
||||
if myJobs {
|
||||
req.OperationAttributes[OperationAttributeRequestingUserName] = c.username
|
||||
}
|
||||
|
||||
if attributes == nil {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = DefaultJobAttributes
|
||||
} else {
|
||||
req.OperationAttributes[OperationAttributeRequestedAttributes] = append(attributes, OperationAttributeJobID)
|
||||
}
|
||||
|
||||
resp, err := c.SendRequest(c.getHttpUri("", nil), req, nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
jobIDMap := make(map[int]Attributes)
|
||||
|
||||
for _, jobAttributes := range resp.Jobs {
|
||||
jobIDMap[jobAttributes[OperationAttributeJobID][0].Value.(int)] = jobAttributes
|
||||
}
|
||||
|
||||
return jobIDMap, nil
|
||||
}
|
||||
|
||||
func (c *IPPClient) CancelJob(jobID int, purge bool) error {
|
||||
req := NewRequest(OperationCancelJob, 1)
|
||||
req.OperationAttributes[OperationAttributeJobURI] = c.getJobUri(jobID)
|
||||
req.OperationAttributes[OperationAttributePurgeJobs] = purge
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("jobs", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *IPPClient) CancelAllJob(printer string, purge bool) error {
|
||||
req := NewRequest(OperationCancelJobs, 1)
|
||||
req.OperationAttributes[OperationAttributePrinterURI] = c.getPrinterUri(printer)
|
||||
req.OperationAttributes[OperationAttributePurgeJobs] = purge
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("admin", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *IPPClient) RestartJob(jobID int) error {
|
||||
req := NewRequest(OperationRestartJob, 1)
|
||||
req.OperationAttributes[OperationAttributeJobURI] = c.getJobUri(jobID)
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("jobs", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *IPPClient) HoldJobUntil(jobID int, holdUntil string) error {
|
||||
req := NewRequest(OperationRestartJob, 1)
|
||||
req.OperationAttributes[OperationAttributeJobURI] = c.getJobUri(jobID)
|
||||
req.JobAttributes[PrinterAttributeHoldJobUntil] = holdUntil
|
||||
|
||||
_, err := c.SendRequest(c.getHttpUri("jobs", ""), req, nil)
|
||||
return err
|
||||
}
|
||||
|
||||
func (c *IPPClient) PrintTestPage(printer string) (int, error) {
|
||||
testPage := new(bytes.Buffer)
|
||||
testPage.WriteString("#PDF-BANNER\n")
|
||||
testPage.WriteString("Template default-testpage.pdf\n")
|
||||
testPage.WriteString("Show printer-name printer-info printer-location printer-make-and-model printer-driver-name")
|
||||
testPage.WriteString("printer-driver-version paper-size imageable-area job-id options time-at-creation")
|
||||
testPage.WriteString("time-at-processing\n\n")
|
||||
|
||||
return c.PrintDocuments([]Document{
|
||||
{
|
||||
Document: testPage,
|
||||
Name: "Test Page",
|
||||
Size: testPage.Len(),
|
||||
MimeType: MimeTypePostscript,
|
||||
},
|
||||
}, printer, map[string]interface{}{
|
||||
OperationAttributeJobName: "Test Page",
|
||||
})
|
||||
}
|
||||
|
||||
func (c *IPPClient) TestConnection() error {
|
||||
conn, err := net.Dial("tcp", fmt.Sprintf("%s:%d", c.host, c.port))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
conn.Close()
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
@ -0,0 +1,94 @@
|
|||
package ipp
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"io"
|
||||
)
|
||||
|
||||
type Request struct {
|
||||
Operation Operation
|
||||
RequestID int
|
||||
|
||||
OperationAttributes map[string]interface{}
|
||||
JobAttributes map[string]interface{}
|
||||
PrinterAttributes map[string]interface{}
|
||||
|
||||
File io.Reader
|
||||
FileSize int
|
||||
}
|
||||
|
||||
func NewRequest(op Operation, reqID int) *Request {
|
||||
return &Request{
|
||||
op, reqID, make(map[string]interface{}), make(map[string]interface{}), make(map[string]interface{}), nil, -1,
|
||||
}
|
||||
}
|
||||
|
||||
func (r *Request) Encode() ([]byte, error) {
|
||||
buf := new(bytes.Buffer)
|
||||
enc := NewAttributeEncoder(buf)
|
||||
|
||||
if err := binary.Write(buf, binary.BigEndian, ProtocolVersionMajor); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := binary.Write(buf, binary.BigEndian, ProtocolVersionMinor); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := binary.Write(buf, binary.BigEndian, r.Operation); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := binary.Write(buf, binary.BigEndian, int32(r.RequestID)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := binary.Write(buf, binary.BigEndian, int8(TagOperation)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := enc.Encode("attributes-charset", Charset); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := enc.Encode("attributes-natural-language", CharsetLanguage); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if len(r.OperationAttributes) > 0 {
|
||||
for attr, value := range r.OperationAttributes {
|
||||
if err := enc.Encode(attr, value); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if len(r.JobAttributes) > 0 {
|
||||
if err := binary.Write(buf, binary.BigEndian, int8(TagJob)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
for attr, value := range r.JobAttributes {
|
||||
if err := enc.Encode(attr, value); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if len(r.PrinterAttributes) > 0 {
|
||||
if err := binary.Write(buf, binary.BigEndian, int8(TagPrinter)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
for attr, value := range r.PrinterAttributes {
|
||||
if err := enc.Encode(attr, value); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if err := binary.Write(buf, binary.BigEndian, int8(TagEnd)); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return buf.Bytes(), nil
|
||||
}
|
||||
|
|
@ -0,0 +1,181 @@
|
|||
package ipp
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
)
|
||||
|
||||
type Attributes map[string][]Attribute
|
||||
|
||||
type Response struct {
|
||||
ProtocolVersionMajor uint8
|
||||
ProtocolVersionMinor uint8
|
||||
|
||||
StatusCode uint16
|
||||
RequestId int32
|
||||
|
||||
OperationAttributes Attributes
|
||||
Printers []Attributes
|
||||
Jobs []Attributes
|
||||
|
||||
data io.Writer
|
||||
}
|
||||
|
||||
func (r *Response) CheckForErrors() error {
|
||||
if r.StatusCode != 0 {
|
||||
if len(r.OperationAttributes["status-message"]) == 0 {
|
||||
return fmt.Errorf("ipp server return error code %d but no status message", r.StatusCode)
|
||||
}
|
||||
|
||||
return errors.New(r.OperationAttributes["status-message"][0].Value.(string))
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
type ResponseDecoder struct {
|
||||
reader io.Reader
|
||||
}
|
||||
|
||||
func NewResponseDecoder(r io.Reader) *ResponseDecoder {
|
||||
return &ResponseDecoder{
|
||||
reader: r,
|
||||
}
|
||||
}
|
||||
|
||||
func (d *ResponseDecoder) Decode(data io.Writer) (*Response, error) {
|
||||
/*
|
||||
1 byte: Protocol Major Version - b
|
||||
1 byte: Protocol Minor Version - b
|
||||
2 byte: Status ID - h
|
||||
4 byte: Request ID - i
|
||||
1 byte: Operation Attribute Byte (\0x01)
|
||||
N times: Attributes
|
||||
1 byte: Attribute End Byte (\0x03)
|
||||
*/
|
||||
|
||||
resp := new(Response)
|
||||
resp.data = data
|
||||
|
||||
// wrap the reader so we have more functionality
|
||||
//reader := bufio.NewReader(d.reader)
|
||||
|
||||
if err := binary.Read(d.reader, binary.BigEndian, &resp.ProtocolVersionMajor); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := binary.Read(d.reader, binary.BigEndian, &resp.ProtocolVersionMinor); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := binary.Read(d.reader, binary.BigEndian, &resp.StatusCode); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if err := binary.Read(d.reader, binary.BigEndian, &resp.RequestId); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
startByteSlice := make([]byte, 1)
|
||||
|
||||
tag := TagCupsInvalid
|
||||
previousAttributeName := ""
|
||||
tempAttributes := make(Attributes)
|
||||
tagSet := false
|
||||
|
||||
attribDecoder := NewAttributeDecoder(d.reader)
|
||||
|
||||
// decode attribute buffer
|
||||
for {
|
||||
if _, err := d.reader.Read(startByteSlice); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
startByte := startByteSlice[0]
|
||||
|
||||
// check if attributes are completed
|
||||
if startByte == TagEnd {
|
||||
break
|
||||
}
|
||||
|
||||
if startByte == TagOperation {
|
||||
if len(tempAttributes) > 0 && tag != TagCupsInvalid {
|
||||
appendAttribute(resp, tag, tempAttributes)
|
||||
tempAttributes = make(Attributes)
|
||||
}
|
||||
|
||||
tag = TagOperation
|
||||
tagSet = true
|
||||
}
|
||||
|
||||
if startByte == TagJob {
|
||||
if len(tempAttributes) > 0 && tag != TagCupsInvalid {
|
||||
appendAttribute(resp, tag, tempAttributes)
|
||||
tempAttributes = make(Attributes)
|
||||
}
|
||||
|
||||
tag = TagJob
|
||||
tagSet = true
|
||||
}
|
||||
|
||||
if startByte == TagPrinter {
|
||||
if len(tempAttributes) > 0 && tag != TagCupsInvalid {
|
||||
appendAttribute(resp, tag, tempAttributes)
|
||||
tempAttributes = make(Attributes)
|
||||
}
|
||||
|
||||
tag = TagPrinter
|
||||
tagSet = true
|
||||
}
|
||||
|
||||
if tagSet {
|
||||
if _, err := d.reader.Read(startByteSlice); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
startByte = startByteSlice[0]
|
||||
}
|
||||
|
||||
attrib, err := attribDecoder.Decode(Tag(startByte))
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if attrib.Name != "" {
|
||||
tempAttributes[attrib.Name] = append(tempAttributes[attrib.Name], *attrib)
|
||||
previousAttributeName = attrib.Name
|
||||
} else {
|
||||
tempAttributes[previousAttributeName] = append(tempAttributes[previousAttributeName], *attrib)
|
||||
}
|
||||
|
||||
tagSet = false
|
||||
}
|
||||
|
||||
if len(tempAttributes) > 0 && tag != TagCupsInvalid {
|
||||
appendAttribute(resp, tag, tempAttributes)
|
||||
}
|
||||
|
||||
if resp.data != nil {
|
||||
if _, err := io.Copy(resp.data, d.reader); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
if resp.StatusCode != 0 {
|
||||
return resp, errors.New(resp.OperationAttributes["status-message"][0].Value.(string))
|
||||
}
|
||||
|
||||
return resp, nil
|
||||
}
|
||||
|
||||
func appendAttribute(resp *Response, tag Tag, attr map[string][]Attribute) {
|
||||
switch tag {
|
||||
case TagOperation:
|
||||
resp.OperationAttributes = attr
|
||||
case TagPrinter:
|
||||
resp.Printers = append(resp.Printers, attr)
|
||||
case TagJob:
|
||||
resp.Jobs = append(resp.Jobs, attr)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
package ipp
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"path"
|
||||
)
|
||||
|
||||
func ParseControlFile(jobID int, spoolDirectory string) (*Response, error) {
|
||||
if spoolDirectory == "" {
|
||||
spoolDirectory = "/var/spool/cups"
|
||||
}
|
||||
|
||||
controlFilePath := path.Join(spoolDirectory, fmt.Sprintf("c%d", jobID))
|
||||
|
||||
if _, err := os.Stat(controlFilePath); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
controlFile, err := os.Open(controlFilePath)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
defer controlFile.Close()
|
||||
|
||||
return NewResponseDecoder(controlFile).Decode(nil)
|
||||
}
|
||||
|
|
@ -0,0 +1,201 @@
|
|||
Apache License
|
||||
Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
||||
|
||||
1. Definitions.
|
||||
|
||||
"License" shall mean the terms and conditions for use, reproduction,
|
||||
and distribution as defined by Sections 1 through 9 of this document.
|
||||
|
||||
"Licensor" shall mean the copyright owner or entity authorized by
|
||||
the copyright owner that is granting the License.
|
||||
|
||||
"Legal Entity" shall mean the union of the acting entity and all
|
||||
other entities that control, are controlled by, or are under common
|
||||
control with that entity. For the purposes of this definition,
|
||||
"control" means (i) the power, direct or indirect, to cause the
|
||||
direction or management of such entity, whether by contract or
|
||||
otherwise, or (ii) ownership of fifty percent (50%) or more of the
|
||||
outstanding shares, or (iii) beneficial ownership of such entity.
|
||||
|
||||
"You" (or "Your") shall mean an individual or Legal Entity
|
||||
exercising permissions granted by this License.
|
||||
|
||||
"Source" form shall mean the preferred form for making modifications,
|
||||
including but not limited to software source code, documentation
|
||||
source, and configuration files.
|
||||
|
||||
"Object" form shall mean any form resulting from mechanical
|
||||
transformation or translation of a Source form, including but
|
||||
not limited to compiled object code, generated documentation,
|
||||
and conversions to other media types.
|
||||
|
||||
"Work" shall mean the work of authorship, whether in Source or
|
||||
Object form, made available under the License, as indicated by a
|
||||
copyright notice that is included in or attached to the work
|
||||
(an example is provided in the Appendix below).
|
||||
|
||||
"Derivative Works" shall mean any work, whether in Source or Object
|
||||
form, that is based on (or derived from) the Work and for which the
|
||||
editorial revisions, annotations, elaborations, or other modifications
|
||||
represent, as a whole, an original work of authorship. For the purposes
|
||||
of this License, Derivative Works shall not include works that remain
|
||||
separable from, or merely link (or bind by name) to the interfaces of,
|
||||
the Work and Derivative Works thereof.
|
||||
|
||||
"Contribution" shall mean any work of authorship, including
|
||||
the original version of the Work and any modifications or additions
|
||||
to that Work or Derivative Works thereof, that is intentionally
|
||||
submitted to Licensor for inclusion in the Work by the copyright owner
|
||||
or by an individual or Legal Entity authorized to submit on behalf of
|
||||
the copyright owner. For the purposes of this definition, "submitted"
|
||||
means any form of electronic, verbal, or written communication sent
|
||||
to the Licensor or its representatives, including but not limited to
|
||||
communication on electronic mailing lists, source code control systems,
|
||||
and issue tracking systems that are managed by, or on behalf of, the
|
||||
Licensor for the purpose of discussing and improving the Work, but
|
||||
excluding communication that is conspicuously marked or otherwise
|
||||
designated in writing by the copyright owner as "Not a Contribution."
|
||||
|
||||
"Contributor" shall mean Licensor and any individual or Legal Entity
|
||||
on behalf of whom a Contribution has been received by Licensor and
|
||||
subsequently incorporated within the Work.
|
||||
|
||||
2. Grant of Copyright License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
copyright license to reproduce, prepare Derivative Works of,
|
||||
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|
||||
Work and such Derivative Works in Source or Object form.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of
|
||||
this License, each Contributor hereby grants to You a perpetual,
|
||||
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
|
||||
(except as stated in this section) patent license to make, have made,
|
||||
use, offer to sell, sell, import, and otherwise transfer the Work,
|
||||
where such license applies only to those patent claims licensable
|
||||
by such Contributor that are necessarily infringed by their
|
||||
Contribution(s) alone or by combination of their Contribution(s)
|
||||
with the Work to which such Contribution(s) was submitted. If You
|
||||
institute patent litigation against any entity (including a
|
||||
cross-claim or counterclaim in a lawsuit) alleging that the Work
|
||||
or a Contribution incorporated within the Work constitutes direct
|
||||
or contributory patent infringement, then any patent licenses
|
||||
granted to You under this License for that Work shall terminate
|
||||
as of the date such litigation is filed.
|
||||
|
||||
4. Redistribution. You may reproduce and distribute copies of the
|
||||
Work or Derivative Works thereof in any medium, with or without
|
||||
modifications, and in Source or Object form, provided that You
|
||||
meet the following conditions:
|
||||
|
||||
(a) You must give any other recipients of the Work or
|
||||
Derivative Works a copy of this License; and
|
||||
|
||||
(b) You must cause any modified files to carry prominent notices
|
||||
stating that You changed the files; and
|
||||
|
||||
(c) You must retain, in the Source form of any Derivative Works
|
||||
that You distribute, all copyright, patent, trademark, and
|
||||
attribution notices from the Source form of the Work,
|
||||
excluding those notices that do not pertain to any part of
|
||||
the Derivative Works; and
|
||||
|
||||
(d) If the Work includes a "NOTICE" text file as part of its
|
||||
distribution, then any Derivative Works that You distribute must
|
||||
include a readable copy of the attribution notices contained
|
||||
within such NOTICE file, excluding those notices that do not
|
||||
pertain to any part of the Derivative Works, in at least one
|
||||
of the following places: within a NOTICE text file distributed
|
||||
as part of the Derivative Works; within the Source form or
|
||||
documentation, if provided along with the Derivative Works; or,
|
||||
within a display generated by the Derivative Works, if and
|
||||
wherever such third-party notices normally appear. The contents
|
||||
of the NOTICE file are for informational purposes only and
|
||||
do not modify the License. You may add Your own attribution
|
||||
notices within Derivative Works that You distribute, alongside
|
||||
or as an addendum to the NOTICE text from the Work, provided
|
||||
that such additional attribution notices cannot be construed
|
||||
as modifying the License.
|
||||
|
||||
You may add Your own copyright statement to Your modifications and
|
||||
may provide additional or different license terms and conditions
|
||||
for use, reproduction, or distribution of Your modifications, or
|
||||
for any such Derivative Works as a whole, provided Your use,
|
||||
reproduction, and distribution of the Work otherwise complies with
|
||||
the conditions stated in this License.
|
||||
|
||||
5. Submission of Contributions. Unless You explicitly state otherwise,
|
||||
any Contribution intentionally submitted for inclusion in the Work
|
||||
by You to the Licensor shall be under the terms and conditions of
|
||||
this License, without any additional terms or conditions.
|
||||
Notwithstanding the above, nothing herein shall supersede or modify
|
||||
the terms of any separate license agreement you may have executed
|
||||
with Licensor regarding such Contributions.
|
||||
|
||||
6. Trademarks. This License does not grant permission to use the trade
|
||||
names, trademarks, service marks, or product names of the Licensor,
|
||||
except as required for reasonable and customary use in describing the
|
||||
origin of the Work and reproducing the content of the NOTICE file.
|
||||
|
||||
7. Disclaimer of Warranty. Unless required by applicable law or
|
||||
agreed to in writing, Licensor provides the Work (and each
|
||||
Contributor provides its Contributions) on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
|
||||
implied, including, without limitation, any warranties or conditions
|
||||
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
|
||||
PARTICULAR PURPOSE. You are solely responsible for determining the
|
||||
appropriateness of using or redistributing the Work and assume any
|
||||
risks associated with Your exercise of permissions under this License.
|
||||
|
||||
8. Limitation of Liability. In no event and under no legal theory,
|
||||
whether in tort (including negligence), contract, or otherwise,
|
||||
unless required by applicable law (such as deliberate and grossly
|
||||
negligent acts) or agreed to in writing, shall any Contributor be
|
||||
liable to You for damages, including any direct, indirect, special,
|
||||
incidental, or consequential damages of any character arising as a
|
||||
result of this License or out of the use or inability to use the
|
||||
Work (including but not limited to damages for loss of goodwill,
|
||||
work stoppage, computer failure or malfunction, or any and all
|
||||
other commercial damages or losses), even if such Contributor
|
||||
has been advised of the possibility of such damages.
|
||||
|
||||
9. Accepting Warranty or Additional Liability. While redistributing
|
||||
the Work or Derivative Works thereof, You may choose to offer,
|
||||
and charge a fee for, acceptance of support, warranty, indemnity,
|
||||
or other liability obligations and/or rights consistent with this
|
||||
License. However, in accepting such obligations, You may act only
|
||||
on Your own behalf and on Your sole responsibility, not on behalf
|
||||
of any other Contributor, and only if You agree to indemnify,
|
||||
defend, and hold each Contributor harmless for any liability
|
||||
incurred by, or claims asserted against, such Contributor by reason
|
||||
of your accepting any such warranty or additional liability.
|
||||
|
||||
END OF TERMS AND CONDITIONS
|
||||
|
||||
APPENDIX: How to apply the Apache License to your work.
|
||||
|
||||
To apply the Apache License to your work, attach the following
|
||||
boilerplate notice, with the fields enclosed by brackets "[]"
|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
|
|
@ -0,0 +1,23 @@
|
|||
Prometheus instrumentation library for Go applications
|
||||
Copyright 2012-2015 The Prometheus Authors
|
||||
|
||||
This product includes software developed at
|
||||
SoundCloud Ltd. (http://soundcloud.com/).
|
||||
|
||||
|
||||
The following components are included in this product:
|
||||
|
||||
perks - a fork of https://github.com/bmizerany/perks
|
||||
https://github.com/beorn7/perks
|
||||
Copyright 2013-2015 Blake Mizerany, Björn Rabenstein
|
||||
See https://github.com/beorn7/perks/blob/master/README.md for license details.
|
||||
|
||||
Go support for Protocol Buffers - Google's data interchange format
|
||||
http://github.com/golang/protobuf/
|
||||
Copyright 2010 The Go Authors
|
||||
See source code for license details.
|
||||
|
||||
Support for streaming Protocol Buffer messages for the Go language (golang).
|
||||
https://github.com/matttproud/golang_protobuf_extensions
|
||||
Copyright 2013 Matt T. Proud
|
||||
Licensed under the Apache License, Version 2.0
|
||||
|
|
@ -0,0 +1 @@
|
|||
command-line-arguments.test
|
||||
|
|
@ -0,0 +1 @@
|
|||
See [](https://godoc.org/github.com/prometheus/client_golang/prometheus).
|
||||
29
vendor/github.com/prometheus/client_golang/prometheus/build_info.go
generated
vendored
Normal file
29
vendor/github.com/prometheus/client_golang/prometheus/build_info.go
generated
vendored
Normal file
|
|
@ -0,0 +1,29 @@
|
|||
// Copyright 2019 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// +build go1.12
|
||||
|
||||
package prometheus
|
||||
|
||||
import "runtime/debug"
|
||||
|
||||
// readBuildInfo is a wrapper around debug.ReadBuildInfo for Go 1.12+.
|
||||
func readBuildInfo() (path, version, sum string) {
|
||||
path, version, sum = "unknown", "unknown", "unknown"
|
||||
if bi, ok := debug.ReadBuildInfo(); ok {
|
||||
path = bi.Main.Path
|
||||
version = bi.Main.Version
|
||||
sum = bi.Main.Sum
|
||||
}
|
||||
return
|
||||
}
|
||||
22
vendor/github.com/prometheus/client_golang/prometheus/build_info_pre_1.12.go
generated
vendored
Normal file
22
vendor/github.com/prometheus/client_golang/prometheus/build_info_pre_1.12.go
generated
vendored
Normal file
|
|
@ -0,0 +1,22 @@
|
|||
// Copyright 2019 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// +build !go1.12
|
||||
|
||||
package prometheus
|
||||
|
||||
// readBuildInfo is a wrapper around debug.ReadBuildInfo for Go versions before
|
||||
// 1.12. Remove this whole file once the minimum supported Go version is 1.12.
|
||||
func readBuildInfo() (path, version, sum string) {
|
||||
return "unknown", "unknown", "unknown"
|
||||
}
|
||||
120
vendor/github.com/prometheus/client_golang/prometheus/collector.go
generated
vendored
Normal file
120
vendor/github.com/prometheus/client_golang/prometheus/collector.go
generated
vendored
Normal file
|
|
@ -0,0 +1,120 @@
|
|||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
// Collector is the interface implemented by anything that can be used by
|
||||
// Prometheus to collect metrics. A Collector has to be registered for
|
||||
// collection. See Registerer.Register.
|
||||
//
|
||||
// The stock metrics provided by this package (Gauge, Counter, Summary,
|
||||
// Histogram, Untyped) are also Collectors (which only ever collect one metric,
|
||||
// namely itself). An implementer of Collector may, however, collect multiple
|
||||
// metrics in a coordinated fashion and/or create metrics on the fly. Examples
|
||||
// for collectors already implemented in this library are the metric vectors
|
||||
// (i.e. collection of multiple instances of the same Metric but with different
|
||||
// label values) like GaugeVec or SummaryVec, and the ExpvarCollector.
|
||||
type Collector interface {
|
||||
// Describe sends the super-set of all possible descriptors of metrics
|
||||
// collected by this Collector to the provided channel and returns once
|
||||
// the last descriptor has been sent. The sent descriptors fulfill the
|
||||
// consistency and uniqueness requirements described in the Desc
|
||||
// documentation.
|
||||
//
|
||||
// It is valid if one and the same Collector sends duplicate
|
||||
// descriptors. Those duplicates are simply ignored. However, two
|
||||
// different Collectors must not send duplicate descriptors.
|
||||
//
|
||||
// Sending no descriptor at all marks the Collector as “unchecked”,
|
||||
// i.e. no checks will be performed at registration time, and the
|
||||
// Collector may yield any Metric it sees fit in its Collect method.
|
||||
//
|
||||
// This method idempotently sends the same descriptors throughout the
|
||||
// lifetime of the Collector. It may be called concurrently and
|
||||
// therefore must be implemented in a concurrency safe way.
|
||||
//
|
||||
// If a Collector encounters an error while executing this method, it
|
||||
// must send an invalid descriptor (created with NewInvalidDesc) to
|
||||
// signal the error to the registry.
|
||||
Describe(chan<- *Desc)
|
||||
// Collect is called by the Prometheus registry when collecting
|
||||
// metrics. The implementation sends each collected metric via the
|
||||
// provided channel and returns once the last metric has been sent. The
|
||||
// descriptor of each sent metric is one of those returned by Describe
|
||||
// (unless the Collector is unchecked, see above). Returned metrics that
|
||||
// share the same descriptor must differ in their variable label
|
||||
// values.
|
||||
//
|
||||
// This method may be called concurrently and must therefore be
|
||||
// implemented in a concurrency safe way. Blocking occurs at the expense
|
||||
// of total performance of rendering all registered metrics. Ideally,
|
||||
// Collector implementations support concurrent readers.
|
||||
Collect(chan<- Metric)
|
||||
}
|
||||
|
||||
// DescribeByCollect is a helper to implement the Describe method of a custom
|
||||
// Collector. It collects the metrics from the provided Collector and sends
|
||||
// their descriptors to the provided channel.
|
||||
//
|
||||
// If a Collector collects the same metrics throughout its lifetime, its
|
||||
// Describe method can simply be implemented as:
|
||||
//
|
||||
// func (c customCollector) Describe(ch chan<- *Desc) {
|
||||
// DescribeByCollect(c, ch)
|
||||
// }
|
||||
//
|
||||
// However, this will not work if the metrics collected change dynamically over
|
||||
// the lifetime of the Collector in a way that their combined set of descriptors
|
||||
// changes as well. The shortcut implementation will then violate the contract
|
||||
// of the Describe method. If a Collector sometimes collects no metrics at all
|
||||
// (for example vectors like CounterVec, GaugeVec, etc., which only collect
|
||||
// metrics after a metric with a fully specified label set has been accessed),
|
||||
// it might even get registered as an unchecked Collector (cf. the Register
|
||||
// method of the Registerer interface). Hence, only use this shortcut
|
||||
// implementation of Describe if you are certain to fulfill the contract.
|
||||
//
|
||||
// The Collector example demonstrates a use of DescribeByCollect.
|
||||
func DescribeByCollect(c Collector, descs chan<- *Desc) {
|
||||
metrics := make(chan Metric)
|
||||
go func() {
|
||||
c.Collect(metrics)
|
||||
close(metrics)
|
||||
}()
|
||||
for m := range metrics {
|
||||
descs <- m.Desc()
|
||||
}
|
||||
}
|
||||
|
||||
// selfCollector implements Collector for a single Metric so that the Metric
|
||||
// collects itself. Add it as an anonymous field to a struct that implements
|
||||
// Metric, and call init with the Metric itself as an argument.
|
||||
type selfCollector struct {
|
||||
self Metric
|
||||
}
|
||||
|
||||
// init provides the selfCollector with a reference to the metric it is supposed
|
||||
// to collect. It is usually called within the factory function to create a
|
||||
// metric. See example.
|
||||
func (c *selfCollector) init(self Metric) {
|
||||
c.self = self
|
||||
}
|
||||
|
||||
// Describe implements Collector.
|
||||
func (c *selfCollector) Describe(ch chan<- *Desc) {
|
||||
ch <- c.self.Desc()
|
||||
}
|
||||
|
||||
// Collect implements Collector.
|
||||
func (c *selfCollector) Collect(ch chan<- Metric) {
|
||||
ch <- c.self
|
||||
}
|
||||
|
|
@ -0,0 +1,277 @@
|
|||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"math"
|
||||
"sync/atomic"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// Counter is a Metric that represents a single numerical value that only ever
|
||||
// goes up. That implies that it cannot be used to count items whose number can
|
||||
// also go down, e.g. the number of currently running goroutines. Those
|
||||
// "counters" are represented by Gauges.
|
||||
//
|
||||
// A Counter is typically used to count requests served, tasks completed, errors
|
||||
// occurred, etc.
|
||||
//
|
||||
// To create Counter instances, use NewCounter.
|
||||
type Counter interface {
|
||||
Metric
|
||||
Collector
|
||||
|
||||
// Inc increments the counter by 1. Use Add to increment it by arbitrary
|
||||
// non-negative values.
|
||||
Inc()
|
||||
// Add adds the given value to the counter. It panics if the value is <
|
||||
// 0.
|
||||
Add(float64)
|
||||
}
|
||||
|
||||
// CounterOpts is an alias for Opts. See there for doc comments.
|
||||
type CounterOpts Opts
|
||||
|
||||
// NewCounter creates a new Counter based on the provided CounterOpts.
|
||||
//
|
||||
// The returned implementation tracks the counter value in two separate
|
||||
// variables, a float64 and a uint64. The latter is used to track calls of the
|
||||
// Inc method and calls of the Add method with a value that can be represented
|
||||
// as a uint64. This allows atomic increments of the counter with optimal
|
||||
// performance. (It is common to have an Inc call in very hot execution paths.)
|
||||
// Both internal tracking values are added up in the Write method. This has to
|
||||
// be taken into account when it comes to precision and overflow behavior.
|
||||
func NewCounter(opts CounterOpts) Counter {
|
||||
desc := NewDesc(
|
||||
BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
|
||||
opts.Help,
|
||||
nil,
|
||||
opts.ConstLabels,
|
||||
)
|
||||
result := &counter{desc: desc, labelPairs: desc.constLabelPairs}
|
||||
result.init(result) // Init self-collection.
|
||||
return result
|
||||
}
|
||||
|
||||
type counter struct {
|
||||
// valBits contains the bits of the represented float64 value, while
|
||||
// valInt stores values that are exact integers. Both have to go first
|
||||
// in the struct to guarantee alignment for atomic operations.
|
||||
// http://golang.org/pkg/sync/atomic/#pkg-note-BUG
|
||||
valBits uint64
|
||||
valInt uint64
|
||||
|
||||
selfCollector
|
||||
desc *Desc
|
||||
|
||||
labelPairs []*dto.LabelPair
|
||||
}
|
||||
|
||||
func (c *counter) Desc() *Desc {
|
||||
return c.desc
|
||||
}
|
||||
|
||||
func (c *counter) Add(v float64) {
|
||||
if v < 0 {
|
||||
panic(errors.New("counter cannot decrease in value"))
|
||||
}
|
||||
ival := uint64(v)
|
||||
if float64(ival) == v {
|
||||
atomic.AddUint64(&c.valInt, ival)
|
||||
return
|
||||
}
|
||||
|
||||
for {
|
||||
oldBits := atomic.LoadUint64(&c.valBits)
|
||||
newBits := math.Float64bits(math.Float64frombits(oldBits) + v)
|
||||
if atomic.CompareAndSwapUint64(&c.valBits, oldBits, newBits) {
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *counter) Inc() {
|
||||
atomic.AddUint64(&c.valInt, 1)
|
||||
}
|
||||
|
||||
func (c *counter) Write(out *dto.Metric) error {
|
||||
fval := math.Float64frombits(atomic.LoadUint64(&c.valBits))
|
||||
ival := atomic.LoadUint64(&c.valInt)
|
||||
val := fval + float64(ival)
|
||||
|
||||
return populateMetric(CounterValue, val, c.labelPairs, out)
|
||||
}
|
||||
|
||||
// CounterVec is a Collector that bundles a set of Counters that all share the
|
||||
// same Desc, but have different values for their variable labels. This is used
|
||||
// if you want to count the same thing partitioned by various dimensions
|
||||
// (e.g. number of HTTP requests, partitioned by response code and
|
||||
// method). Create instances with NewCounterVec.
|
||||
type CounterVec struct {
|
||||
*metricVec
|
||||
}
|
||||
|
||||
// NewCounterVec creates a new CounterVec based on the provided CounterOpts and
|
||||
// partitioned by the given label names.
|
||||
func NewCounterVec(opts CounterOpts, labelNames []string) *CounterVec {
|
||||
desc := NewDesc(
|
||||
BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
|
||||
opts.Help,
|
||||
labelNames,
|
||||
opts.ConstLabels,
|
||||
)
|
||||
return &CounterVec{
|
||||
metricVec: newMetricVec(desc, func(lvs ...string) Metric {
|
||||
if len(lvs) != len(desc.variableLabels) {
|
||||
panic(makeInconsistentCardinalityError(desc.fqName, desc.variableLabels, lvs))
|
||||
}
|
||||
result := &counter{desc: desc, labelPairs: makeLabelPairs(desc, lvs)}
|
||||
result.init(result) // Init self-collection.
|
||||
return result
|
||||
}),
|
||||
}
|
||||
}
|
||||
|
||||
// GetMetricWithLabelValues returns the Counter for the given slice of label
|
||||
// values (same order as the VariableLabels in Desc). If that combination of
|
||||
// label values is accessed for the first time, a new Counter is created.
|
||||
//
|
||||
// It is possible to call this method without using the returned Counter to only
|
||||
// create the new Counter but leave it at its starting value 0. See also the
|
||||
// SummaryVec example.
|
||||
//
|
||||
// Keeping the Counter for later use is possible (and should be considered if
|
||||
// performance is critical), but keep in mind that Reset, DeleteLabelValues and
|
||||
// Delete can be used to delete the Counter from the CounterVec. In that case,
|
||||
// the Counter will still exist, but it will not be exported anymore, even if a
|
||||
// Counter with the same label values is created later.
|
||||
//
|
||||
// An error is returned if the number of label values is not the same as the
|
||||
// number of VariableLabels in Desc (minus any curried labels).
|
||||
//
|
||||
// Note that for more than one label value, this method is prone to mistakes
|
||||
// caused by an incorrect order of arguments. Consider GetMetricWith(Labels) as
|
||||
// an alternative to avoid that type of mistake. For higher label numbers, the
|
||||
// latter has a much more readable (albeit more verbose) syntax, but it comes
|
||||
// with a performance overhead (for creating and processing the Labels map).
|
||||
// See also the GaugeVec example.
|
||||
func (v *CounterVec) GetMetricWithLabelValues(lvs ...string) (Counter, error) {
|
||||
metric, err := v.metricVec.getMetricWithLabelValues(lvs...)
|
||||
if metric != nil {
|
||||
return metric.(Counter), err
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// GetMetricWith returns the Counter for the given Labels map (the label names
|
||||
// must match those of the VariableLabels in Desc). If that label map is
|
||||
// accessed for the first time, a new Counter is created. Implications of
|
||||
// creating a Counter without using it and keeping the Counter for later use are
|
||||
// the same as for GetMetricWithLabelValues.
|
||||
//
|
||||
// An error is returned if the number and names of the Labels are inconsistent
|
||||
// with those of the VariableLabels in Desc (minus any curried labels).
|
||||
//
|
||||
// This method is used for the same purpose as
|
||||
// GetMetricWithLabelValues(...string). See there for pros and cons of the two
|
||||
// methods.
|
||||
func (v *CounterVec) GetMetricWith(labels Labels) (Counter, error) {
|
||||
metric, err := v.metricVec.getMetricWith(labels)
|
||||
if metric != nil {
|
||||
return metric.(Counter), err
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// WithLabelValues works as GetMetricWithLabelValues, but panics where
|
||||
// GetMetricWithLabelValues would have returned an error. Not returning an
|
||||
// error allows shortcuts like
|
||||
// myVec.WithLabelValues("404", "GET").Add(42)
|
||||
func (v *CounterVec) WithLabelValues(lvs ...string) Counter {
|
||||
c, err := v.GetMetricWithLabelValues(lvs...)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
// With works as GetMetricWith, but panics where GetMetricWithLabels would have
|
||||
// returned an error. Not returning an error allows shortcuts like
|
||||
// myVec.With(prometheus.Labels{"code": "404", "method": "GET"}).Add(42)
|
||||
func (v *CounterVec) With(labels Labels) Counter {
|
||||
c, err := v.GetMetricWith(labels)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return c
|
||||
}
|
||||
|
||||
// CurryWith returns a vector curried with the provided labels, i.e. the
|
||||
// returned vector has those labels pre-set for all labeled operations performed
|
||||
// on it. The cardinality of the curried vector is reduced accordingly. The
|
||||
// order of the remaining labels stays the same (just with the curried labels
|
||||
// taken out of the sequence – which is relevant for the
|
||||
// (GetMetric)WithLabelValues methods). It is possible to curry a curried
|
||||
// vector, but only with labels not yet used for currying before.
|
||||
//
|
||||
// The metrics contained in the CounterVec are shared between the curried and
|
||||
// uncurried vectors. They are just accessed differently. Curried and uncurried
|
||||
// vectors behave identically in terms of collection. Only one must be
|
||||
// registered with a given registry (usually the uncurried version). The Reset
|
||||
// method deletes all metrics, even if called on a curried vector.
|
||||
func (v *CounterVec) CurryWith(labels Labels) (*CounterVec, error) {
|
||||
vec, err := v.curryWith(labels)
|
||||
if vec != nil {
|
||||
return &CounterVec{vec}, err
|
||||
}
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// MustCurryWith works as CurryWith but panics where CurryWith would have
|
||||
// returned an error.
|
||||
func (v *CounterVec) MustCurryWith(labels Labels) *CounterVec {
|
||||
vec, err := v.CurryWith(labels)
|
||||
if err != nil {
|
||||
panic(err)
|
||||
}
|
||||
return vec
|
||||
}
|
||||
|
||||
// CounterFunc is a Counter whose value is determined at collect time by calling a
|
||||
// provided function.
|
||||
//
|
||||
// To create CounterFunc instances, use NewCounterFunc.
|
||||
type CounterFunc interface {
|
||||
Metric
|
||||
Collector
|
||||
}
|
||||
|
||||
// NewCounterFunc creates a new CounterFunc based on the provided
|
||||
// CounterOpts. The value reported is determined by calling the given function
|
||||
// from within the Write method. Take into account that metric collection may
|
||||
// happen concurrently. If that results in concurrent calls to Write, like in
|
||||
// the case where a CounterFunc is directly registered with Prometheus, the
|
||||
// provided function must be concurrency-safe. The function should also honor
|
||||
// the contract for a Counter (values only go up, not down), but compliance will
|
||||
// not be checked.
|
||||
func NewCounterFunc(opts CounterOpts, function func() float64) CounterFunc {
|
||||
return newValueFunc(NewDesc(
|
||||
BuildFQName(opts.Namespace, opts.Subsystem, opts.Name),
|
||||
opts.Help,
|
||||
nil,
|
||||
opts.ConstLabels,
|
||||
), CounterValue, function)
|
||||
}
|
||||
|
|
@ -0,0 +1,185 @@
|
|||
// Copyright 2016 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"sort"
|
||||
"strings"
|
||||
|
||||
"github.com/cespare/xxhash/v2"
|
||||
"github.com/golang/protobuf/proto"
|
||||
"github.com/prometheus/common/model"
|
||||
|
||||
dto "github.com/prometheus/client_model/go"
|
||||
)
|
||||
|
||||
// Desc is the descriptor used by every Prometheus Metric. It is essentially
|
||||
// the immutable meta-data of a Metric. The normal Metric implementations
|
||||
// included in this package manage their Desc under the hood. Users only have to
|
||||
// deal with Desc if they use advanced features like the ExpvarCollector or
|
||||
// custom Collectors and Metrics.
|
||||
//
|
||||
// Descriptors registered with the same registry have to fulfill certain
|
||||
// consistency and uniqueness criteria if they share the same fully-qualified
|
||||
// name: They must have the same help string and the same label names (aka label
|
||||
// dimensions) in each, constLabels and variableLabels, but they must differ in
|
||||
// the values of the constLabels.
|
||||
//
|
||||
// Descriptors that share the same fully-qualified names and the same label
|
||||
// values of their constLabels are considered equal.
|
||||
//
|
||||
// Use NewDesc to create new Desc instances.
|
||||
type Desc struct {
|
||||
// fqName has been built from Namespace, Subsystem, and Name.
|
||||
fqName string
|
||||
// help provides some helpful information about this metric.
|
||||
help string
|
||||
// constLabelPairs contains precalculated DTO label pairs based on
|
||||
// the constant labels.
|
||||
constLabelPairs []*dto.LabelPair
|
||||
// VariableLabels contains names of labels for which the metric
|
||||
// maintains variable values.
|
||||
variableLabels []string
|
||||
// id is a hash of the values of the ConstLabels and fqName. This
|
||||
// must be unique among all registered descriptors and can therefore be
|
||||
// used as an identifier of the descriptor.
|
||||
id uint64
|
||||
// dimHash is a hash of the label names (preset and variable) and the
|
||||
// Help string. Each Desc with the same fqName must have the same
|
||||
// dimHash.
|
||||
dimHash uint64
|
||||
// err is an error that occurred during construction. It is reported on
|
||||
// registration time.
|
||||
err error
|
||||
}
|
||||
|
||||
// NewDesc allocates and initializes a new Desc. Errors are recorded in the Desc
|
||||
// and will be reported on registration time. variableLabels and constLabels can
|
||||
// be nil if no such labels should be set. fqName must not be empty.
|
||||
//
|
||||
// variableLabels only contain the label names. Their label values are variable
|
||||
// and therefore not part of the Desc. (They are managed within the Metric.)
|
||||
//
|
||||
// For constLabels, the label values are constant. Therefore, they are fully
|
||||
// specified in the Desc. See the Collector example for a usage pattern.
|
||||
func NewDesc(fqName, help string, variableLabels []string, constLabels Labels) *Desc {
|
||||
d := &Desc{
|
||||
fqName: fqName,
|
||||
help: help,
|
||||
variableLabels: variableLabels,
|
||||
}
|
||||
if !model.IsValidMetricName(model.LabelValue(fqName)) {
|
||||
d.err = fmt.Errorf("%q is not a valid metric name", fqName)
|
||||
return d
|
||||
}
|
||||
// labelValues contains the label values of const labels (in order of
|
||||
// their sorted label names) plus the fqName (at position 0).
|
||||
labelValues := make([]string, 1, len(constLabels)+1)
|
||||
labelValues[0] = fqName
|
||||
labelNames := make([]string, 0, len(constLabels)+len(variableLabels))
|
||||
labelNameSet := map[string]struct{}{}
|
||||
// First add only the const label names and sort them...
|
||||
for labelName := range constLabels {
|
||||
if !checkLabelName(labelName) {
|
||||
d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName)
|
||||
return d
|
||||
}
|
||||
labelNames = append(labelNames, labelName)
|
||||
labelNameSet[labelName] = struct{}{}
|
||||
}
|
||||
sort.Strings(labelNames)
|
||||
// ... so that we can now add const label values in the order of their names.
|
||||
for _, labelName := range labelNames {
|
||||
labelValues = append(labelValues, constLabels[labelName])
|
||||
}
|
||||
// Validate the const label values. They can't have a wrong cardinality, so
|
||||
// use in len(labelValues) as expectedNumberOfValues.
|
||||
if err := validateLabelValues(labelValues, len(labelValues)); err != nil {
|
||||
d.err = err
|
||||
return d
|
||||
}
|
||||
// Now add the variable label names, but prefix them with something that
|
||||
// cannot be in a regular label name. That prevents matching the label
|
||||
// dimension with a different mix between preset and variable labels.
|
||||
for _, labelName := range variableLabels {
|
||||
if !checkLabelName(labelName) {
|
||||
d.err = fmt.Errorf("%q is not a valid label name for metric %q", labelName, fqName)
|
||||
return d
|
||||
}
|
||||
labelNames = append(labelNames, "$"+labelName)
|
||||
labelNameSet[labelName] = struct{}{}
|
||||
}
|
||||
if len(labelNames) != len(labelNameSet) {
|
||||
d.err = errors.New("duplicate label names")
|
||||
return d
|
||||
}
|
||||
|
||||
xxh := xxhash.New()
|
||||
for _, val := range labelValues {
|
||||
xxh.WriteString(val)
|
||||
xxh.Write(separatorByteSlice)
|
||||
}
|
||||
d.id = xxh.Sum64()
|
||||
// Sort labelNames so that order doesn't matter for the hash.
|
||||
sort.Strings(labelNames)
|
||||
// Now hash together (in this order) the help string and the sorted
|
||||
// label names.
|
||||
xxh.Reset()
|
||||
xxh.WriteString(help)
|
||||
xxh.Write(separatorByteSlice)
|
||||
for _, labelName := range labelNames {
|
||||
xxh.WriteString(labelName)
|
||||
xxh.Write(separatorByteSlice)
|
||||
}
|
||||
d.dimHash = xxh.Sum64()
|
||||
|
||||
d.constLabelPairs = make([]*dto.LabelPair, 0, len(constLabels))
|
||||
for n, v := range constLabels {
|
||||
d.constLabelPairs = append(d.constLabelPairs, &dto.LabelPair{
|
||||
Name: proto.String(n),
|
||||
Value: proto.String(v),
|
||||
})
|
||||
}
|
||||
sort.Sort(labelPairSorter(d.constLabelPairs))
|
||||
return d
|
||||
}
|
||||
|
||||
// NewInvalidDesc returns an invalid descriptor, i.e. a descriptor with the
|
||||
// provided error set. If a collector returning such a descriptor is registered,
|
||||
// registration will fail with the provided error. NewInvalidDesc can be used by
|
||||
// a Collector to signal inability to describe itself.
|
||||
func NewInvalidDesc(err error) *Desc {
|
||||
return &Desc{
|
||||
err: err,
|
||||
}
|
||||
}
|
||||
|
||||
func (d *Desc) String() string {
|
||||
lpStrings := make([]string, 0, len(d.constLabelPairs))
|
||||
for _, lp := range d.constLabelPairs {
|
||||
lpStrings = append(
|
||||
lpStrings,
|
||||
fmt.Sprintf("%s=%q", lp.GetName(), lp.GetValue()),
|
||||
)
|
||||
}
|
||||
return fmt.Sprintf(
|
||||
"Desc{fqName: %q, help: %q, constLabels: {%s}, variableLabels: %v}",
|
||||
d.fqName,
|
||||
d.help,
|
||||
strings.Join(lpStrings, ","),
|
||||
d.variableLabels,
|
||||
)
|
||||
}
|
||||
|
|
@ -0,0 +1,200 @@
|
|||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
// Package prometheus is the core instrumentation package. It provides metrics
|
||||
// primitives to instrument code for monitoring. It also offers a registry for
|
||||
// metrics. Sub-packages allow to expose the registered metrics via HTTP
|
||||
// (package promhttp) or push them to a Pushgateway (package push). There is
|
||||
// also a sub-package promauto, which provides metrics constructors with
|
||||
// automatic registration.
|
||||
//
|
||||
// All exported functions and methods are safe to be used concurrently unless
|
||||
// specified otherwise.
|
||||
//
|
||||
// A Basic Example
|
||||
//
|
||||
// As a starting point, a very basic usage example:
|
||||
//
|
||||
// package main
|
||||
//
|
||||
// import (
|
||||
// "log"
|
||||
// "net/http"
|
||||
//
|
||||
// "github.com/prometheus/client_golang/prometheus"
|
||||
// "github.com/prometheus/client_golang/prometheus/promhttp"
|
||||
// )
|
||||
//
|
||||
// var (
|
||||
// cpuTemp = prometheus.NewGauge(prometheus.GaugeOpts{
|
||||
// Name: "cpu_temperature_celsius",
|
||||
// Help: "Current temperature of the CPU.",
|
||||
// })
|
||||
// hdFailures = prometheus.NewCounterVec(
|
||||
// prometheus.CounterOpts{
|
||||
// Name: "hd_errors_total",
|
||||
// Help: "Number of hard-disk errors.",
|
||||
// },
|
||||
// []string{"device"},
|
||||
// )
|
||||
// )
|
||||
//
|
||||
// func init() {
|
||||
// // Metrics have to be registered to be exposed:
|
||||
// prometheus.MustRegister(cpuTemp)
|
||||
// prometheus.MustRegister(hdFailures)
|
||||
// }
|
||||
//
|
||||
// func main() {
|
||||
// cpuTemp.Set(65.3)
|
||||
// hdFailures.With(prometheus.Labels{"device":"/dev/sda"}).Inc()
|
||||
//
|
||||
// // The Handler function provides a default handler to expose metrics
|
||||
// // via an HTTP server. "/metrics" is the usual endpoint for that.
|
||||
// http.Handle("/metrics", promhttp.Handler())
|
||||
// log.Fatal(http.ListenAndServe(":8080", nil))
|
||||
// }
|
||||
//
|
||||
//
|
||||
// This is a complete program that exports two metrics, a Gauge and a Counter,
|
||||
// the latter with a label attached to turn it into a (one-dimensional) vector.
|
||||
//
|
||||
// Metrics
|
||||
//
|
||||
// The number of exported identifiers in this package might appear a bit
|
||||
// overwhelming. However, in addition to the basic plumbing shown in the example
|
||||
// above, you only need to understand the different metric types and their
|
||||
// vector versions for basic usage. Furthermore, if you are not concerned with
|
||||
// fine-grained control of when and how to register metrics with the registry,
|
||||
// have a look at the promauto package, which will effectively allow you to
|
||||
// ignore registration altogether in simple cases.
|
||||
//
|
||||
// Above, you have already touched the Counter and the Gauge. There are two more
|
||||
// advanced metric types: the Summary and Histogram. A more thorough description
|
||||
// of those four metric types can be found in the Prometheus docs:
|
||||
// https://prometheus.io/docs/concepts/metric_types/
|
||||
//
|
||||
// A fifth "type" of metric is Untyped. It behaves like a Gauge, but signals the
|
||||
// Prometheus server not to assume anything about its type.
|
||||
//
|
||||
// In addition to the fundamental metric types Gauge, Counter, Summary,
|
||||
// Histogram, and Untyped, a very important part of the Prometheus data model is
|
||||
// the partitioning of samples along dimensions called labels, which results in
|
||||
// metric vectors. The fundamental types are GaugeVec, CounterVec, SummaryVec,
|
||||
// HistogramVec, and UntypedVec.
|
||||
//
|
||||
// While only the fundamental metric types implement the Metric interface, both
|
||||
// the metrics and their vector versions implement the Collector interface. A
|
||||
// Collector manages the collection of a number of Metrics, but for convenience,
|
||||
// a Metric can also “collect itself”. Note that Gauge, Counter, Summary,
|
||||
// Histogram, and Untyped are interfaces themselves while GaugeVec, CounterVec,
|
||||
// SummaryVec, HistogramVec, and UntypedVec are not.
|
||||
//
|
||||
// To create instances of Metrics and their vector versions, you need a suitable
|
||||
// …Opts struct, i.e. GaugeOpts, CounterOpts, SummaryOpts, HistogramOpts, or
|
||||
// UntypedOpts.
|
||||
//
|
||||
// Custom Collectors and constant Metrics
|
||||
//
|
||||
// While you could create your own implementations of Metric, most likely you
|
||||
// will only ever implement the Collector interface on your own. At a first
|
||||
// glance, a custom Collector seems handy to bundle Metrics for common
|
||||
// registration (with the prime example of the different metric vectors above,
|
||||
// which bundle all the metrics of the same name but with different labels).
|
||||
//
|
||||
// There is a more involved use case, too: If you already have metrics
|
||||
// available, created outside of the Prometheus context, you don't need the
|
||||
// interface of the various Metric types. You essentially want to mirror the
|
||||
// existing numbers into Prometheus Metrics during collection. An own
|
||||
// implementation of the Collector interface is perfect for that. You can create
|
||||
// Metric instances “on the fly” using NewConstMetric, NewConstHistogram, and
|
||||
// NewConstSummary (and their respective Must… versions). That will happen in
|
||||
// the Collect method. The Describe method has to return separate Desc
|
||||
// instances, representative of the “throw-away” metrics to be created later.
|
||||
// NewDesc comes in handy to create those Desc instances. Alternatively, you
|
||||
// could return no Desc at all, which will mark the Collector “unchecked”. No
|
||||
// checks are performed at registration time, but metric consistency will still
|
||||
// be ensured at scrape time, i.e. any inconsistencies will lead to scrape
|
||||
// errors. Thus, with unchecked Collectors, the responsibility to not collect
|
||||
// metrics that lead to inconsistencies in the total scrape result lies with the
|
||||
// implementer of the Collector. While this is not a desirable state, it is
|
||||
// sometimes necessary. The typical use case is a situation where the exact
|
||||
// metrics to be returned by a Collector cannot be predicted at registration
|
||||
// time, but the implementer has sufficient knowledge of the whole system to
|
||||
// guarantee metric consistency.
|
||||
//
|
||||
// The Collector example illustrates the use case. You can also look at the
|
||||
// source code of the processCollector (mirroring process metrics), the
|
||||
// goCollector (mirroring Go metrics), or the expvarCollector (mirroring expvar
|
||||
// metrics) as examples that are used in this package itself.
|
||||
//
|
||||
// If you just need to call a function to get a single float value to collect as
|
||||
// a metric, GaugeFunc, CounterFunc, or UntypedFunc might be interesting
|
||||
// shortcuts.
|
||||
//
|
||||
// Advanced Uses of the Registry
|
||||
//
|
||||
// While MustRegister is the by far most common way of registering a Collector,
|
||||
// sometimes you might want to handle the errors the registration might cause.
|
||||
// As suggested by the name, MustRegister panics if an error occurs. With the
|
||||
// Register function, the error is returned and can be handled.
|
||||
//
|
||||
// An error is returned if the registered Collector is incompatible or
|
||||
// inconsistent with already registered metrics. The registry aims for
|
||||
// consistency of the collected metrics according to the Prometheus data model.
|
||||
// Inconsistencies are ideally detected at registration time, not at collect
|
||||
// time. The former will usually be detected at start-up time of a program,
|
||||
// while the latter will only happen at scrape time, possibly not even on the
|
||||
// first scrape if the inconsistency only becomes relevant later. That is the
|
||||
// main reason why a Collector and a Metric have to describe themselves to the
|
||||
// registry.
|
||||
//
|
||||
// So far, everything we did operated on the so-called default registry, as it
|
||||
// can be found in the global DefaultRegisterer variable. With NewRegistry, you
|
||||
// can create a custom registry, or you can even implement the Registerer or
|
||||
// Gatherer interfaces yourself. The methods Register and Unregister work in the
|
||||
// same way on a custom registry as the global functions Register and Unregister
|
||||
// on the default registry.
|
||||
//
|
||||
// There are a number of uses for custom registries: You can use registries with
|
||||
// special properties, see NewPedanticRegistry. You can avoid global state, as
|
||||
// it is imposed by the DefaultRegisterer. You can use multiple registries at
|
||||
// the same time to expose different metrics in different ways. You can use
|
||||
// separate registries for testing purposes.
|
||||
//
|
||||
// Also note that the DefaultRegisterer comes registered with a Collector for Go
|
||||
// runtime metrics (via NewGoCollector) and a Collector for process metrics (via
|
||||
// NewProcessCollector). With a custom registry, you are in control and decide
|
||||
// yourself about the Collectors to register.
|
||||
//
|
||||
// HTTP Exposition
|
||||
//
|
||||
// The Registry implements the Gatherer interface. The caller of the Gather
|
||||
// method can then expose the gathered metrics in some way. Usually, the metrics
|
||||
// are served via HTTP on the /metrics endpoint. That's happening in the example
|
||||
// above. The tools to expose metrics via HTTP are in the promhttp sub-package.
|
||||
//
|
||||
// Pushing to the Pushgateway
|
||||
//
|
||||
// Function for pushing to the Pushgateway can be found in the push sub-package.
|
||||
//
|
||||
// Graphite Bridge
|
||||
//
|
||||
// Functions and examples to push metrics from a Gatherer to Graphite can be
|
||||
// found in the graphite sub-package.
|
||||
//
|
||||
// Other Means of Exposition
|
||||
//
|
||||
// More ways of exposing metrics can easily be added by following the approaches
|
||||
// of the existing implementations.
|
||||
package prometheus
|
||||
119
vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go
generated
vendored
Normal file
119
vendor/github.com/prometheus/client_golang/prometheus/expvar_collector.go
generated
vendored
Normal file
|
|
@ -0,0 +1,119 @@
|
|||
// Copyright 2014 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
import (
|
||||
"encoding/json"
|
||||
"expvar"
|
||||
)
|
||||
|
||||
type expvarCollector struct {
|
||||
exports map[string]*Desc
|
||||
}
|
||||
|
||||
// NewExpvarCollector returns a newly allocated expvar Collector that still has
|
||||
// to be registered with a Prometheus registry.
|
||||
//
|
||||
// An expvar Collector collects metrics from the expvar interface. It provides a
|
||||
// quick way to expose numeric values that are already exported via expvar as
|
||||
// Prometheus metrics. Note that the data models of expvar and Prometheus are
|
||||
// fundamentally different, and that the expvar Collector is inherently slower
|
||||
// than native Prometheus metrics. Thus, the expvar Collector is probably great
|
||||
// for experiments and prototying, but you should seriously consider a more
|
||||
// direct implementation of Prometheus metrics for monitoring production
|
||||
// systems.
|
||||
//
|
||||
// The exports map has the following meaning:
|
||||
//
|
||||
// The keys in the map correspond to expvar keys, i.e. for every expvar key you
|
||||
// want to export as Prometheus metric, you need an entry in the exports
|
||||
// map. The descriptor mapped to each key describes how to export the expvar
|
||||
// value. It defines the name and the help string of the Prometheus metric
|
||||
// proxying the expvar value. The type will always be Untyped.
|
||||
//
|
||||
// For descriptors without variable labels, the expvar value must be a number or
|
||||
// a bool. The number is then directly exported as the Prometheus sample
|
||||
// value. (For a bool, 'false' translates to 0 and 'true' to 1). Expvar values
|
||||
// that are not numbers or bools are silently ignored.
|
||||
//
|
||||
// If the descriptor has one variable label, the expvar value must be an expvar
|
||||
// map. The keys in the expvar map become the various values of the one
|
||||
// Prometheus label. The values in the expvar map must be numbers or bools again
|
||||
// as above.
|
||||
//
|
||||
// For descriptors with more than one variable label, the expvar must be a
|
||||
// nested expvar map, i.e. where the values of the topmost map are maps again
|
||||
// etc. until a depth is reached that corresponds to the number of labels. The
|
||||
// leaves of that structure must be numbers or bools as above to serve as the
|
||||
// sample values.
|
||||
//
|
||||
// Anything that does not fit into the scheme above is silently ignored.
|
||||
func NewExpvarCollector(exports map[string]*Desc) Collector {
|
||||
return &expvarCollector{
|
||||
exports: exports,
|
||||
}
|
||||
}
|
||||
|
||||
// Describe implements Collector.
|
||||
func (e *expvarCollector) Describe(ch chan<- *Desc) {
|
||||
for _, desc := range e.exports {
|
||||
ch <- desc
|
||||
}
|
||||
}
|
||||
|
||||
// Collect implements Collector.
|
||||
func (e *expvarCollector) Collect(ch chan<- Metric) {
|
||||
for name, desc := range e.exports {
|
||||
var m Metric
|
||||
expVar := expvar.Get(name)
|
||||
if expVar == nil {
|
||||
continue
|
||||
}
|
||||
var v interface{}
|
||||
labels := make([]string, len(desc.variableLabels))
|
||||
if err := json.Unmarshal([]byte(expVar.String()), &v); err != nil {
|
||||
ch <- NewInvalidMetric(desc, err)
|
||||
continue
|
||||
}
|
||||
var processValue func(v interface{}, i int)
|
||||
processValue = func(v interface{}, i int) {
|
||||
if i >= len(labels) {
|
||||
copiedLabels := append(make([]string, 0, len(labels)), labels...)
|
||||
switch v := v.(type) {
|
||||
case float64:
|
||||
m = MustNewConstMetric(desc, UntypedValue, v, copiedLabels...)
|
||||
case bool:
|
||||
if v {
|
||||
m = MustNewConstMetric(desc, UntypedValue, 1, copiedLabels...)
|
||||
} else {
|
||||
m = MustNewConstMetric(desc, UntypedValue, 0, copiedLabels...)
|
||||
}
|
||||
default:
|
||||
return
|
||||
}
|
||||
ch <- m
|
||||
return
|
||||
}
|
||||
vm, ok := v.(map[string]interface{})
|
||||
if !ok {
|
||||
return
|
||||
}
|
||||
for lv, val := range vm {
|
||||
labels[i] = lv
|
||||
processValue(val, i+1)
|
||||
}
|
||||
}
|
||||
processValue(v, 0)
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
// Copyright 2018 The Prometheus Authors
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package prometheus
|
||||
|
||||
// Inline and byte-free variant of hash/fnv's fnv64a.
|
||||
|
||||
const (
|
||||
offset64 = 14695981039346656037
|
||||
prime64 = 1099511628211
|
||||
)
|
||||
|
||||
// hashNew initializies a new fnv64a hash value.
|
||||
func hashNew() uint64 {
|
||||
return offset64
|
||||
}
|
||||
|
||||
// hashAdd adds a string to a fnv64a hash value, returning the updated hash.
|
||||
func hashAdd(h uint64, s string) uint64 {
|
||||
for i := 0; i < len(s); i++ {
|
||||
h ^= uint64(s[i])
|
||||
h *= prime64
|
||||
}
|
||||
return h
|
||||
}
|
||||
|
||||
// hashAddByte adds a byte to a fnv64a hash value, returning the updated hash.
|
||||
func hashAddByte(h uint64, b byte) uint64 {
|
||||
h ^= uint64(b)
|
||||
h *= prime64
|
||||
return h
|
||||
}
|
||||
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Reference in New Issue