open-nomad/vendor/go4.org/errorutil/highlight.go
Lasse Dalegaard cbcbe0da2e Expose rkt DriverNetwork
Currently the rkt driver does not expose a DriverNetwork instance after
starting the container, which means that address_mode = 'driver' does
not work.

To get the container network information, we can call `rkt status` on
the UUID of the container and grab the container IP from there.

For the port map, we need to grab the pod manifest as it will tell us
which ports the container exposes. We then cross-reference the
configured port name with the container port names, and use that to
create a correct port mapping.

To avoid doing a (bad) reimplementation of the appc schema(which rkt
uses for its manifest) and rkt apis, we pull those in as vendored
dependencies. The versions used are the same ones that rkt use in their
glide dependency configuration for version 1.28.0.
2017-09-21 00:34:22 +02:00

59 lines
1.6 KiB
Go

/*
Copyright 2011 Google Inc.
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 errorutil helps make better error messages.
package errorutil // import "go4.org/errorutil"
import (
"bufio"
"bytes"
"fmt"
"io"
"strings"
)
// HighlightBytePosition takes a reader and the location in bytes of a parse
// error (for instance, from json.SyntaxError.Offset) and returns the line, column,
// and pretty-printed context around the error with an arrow indicating the exact
// position of the syntax error.
func HighlightBytePosition(f io.Reader, pos int64) (line, col int, highlight string) {
line = 1
br := bufio.NewReader(f)
lastLine := ""
thisLine := new(bytes.Buffer)
for n := int64(0); n < pos; n++ {
b, err := br.ReadByte()
if err != nil {
break
}
if b == '\n' {
lastLine = thisLine.String()
thisLine.Reset()
line++
col = 1
} else {
col++
thisLine.WriteByte(b)
}
}
if line > 1 {
highlight += fmt.Sprintf("%5d: %s\n", line-1, lastLine)
}
highlight += fmt.Sprintf("%5d: %s\n", line, thisLine.String())
highlight += fmt.Sprintf("%s^\n", strings.Repeat(" ", col+5))
return
}