- Fixes a panic when Operation.SourceAddr is nil (internal net/rpc calls)
- Adds proper HTTP response codes (429 and 503) for rate limit errors
- Makes the error messages clearer
- Enables automatic retries for rate-limit errors in the net/rpc stack
* inject logger and create logdrop sink
* init sink with an empty struct instead of nil
* wrap a logger instead of a sink and add a discard logger to avoid double logging
* fix compile errors
* fix linter errors
* Fix bug where log arguments aren't properly formatted
* Move log sink construction outside of handler
* Add prometheus definition and docs for log drop counter
Co-authored-by: Daniel Upton <daniel@floppy.co>
Fixes a bug introduced by #15346 where we'd always require an ACL
token even if ACLs were disabled because we were erroneously
treating `nil` identity as anonymous.
This is the OSS portion of enterprise PR 3822.
Adds a custom gRPC balancer that replicates the router's server cycling
behavior. Also enables automatic retries for RESOURCE_EXHAUSTED errors,
which we now get for free.
Adds automation for generating the map of `gRPC Method Name → Rate Limit Type`
used by the middleware introduced in #15550, and will ensure we don't forget
to add new endpoints.
Engineers must annotate their RPCs in the proto file like so:
```
rpc Foo(FooRequest) returns (FooResponse) {
option (consul.internal.ratelimit.spec) = {
operation_type: READ,
};
}
```
When they run `make proto` a protoc plugin `protoc-gen-consul-rate-limit` will
be installed that writes rate-limit specs as a JSON array to a file called
`.ratelimit.tmp` (one per protobuf package/directory).
After running Buf, `make proto` will execute a post-process script that will
ingest all of the `.ratelimit.tmp` files and generate a Go file containing the
mappings in the `agent/grpc-middleware` package. In the enterprise repository,
it will write an additional file with the enterprise-only endpoints.
If an engineer forgets to add the annotation to a new RPC, the plugin will
return an error like so:
```
RPC Foo is missing rate-limit specification, fix it with:
import "proto-public/annotations/ratelimit/ratelimit.proto";
service Bar {
rpc Foo(...) returns (...) {
option (hashicorp.consul.internal.ratelimit.spec) = {
operation_type: OPERATION_READ | OPERATION_WRITE | OPERATION_EXEMPT,
};
}
}
```
In the future, this annotation can be extended to support rate-limit
category (e.g. KV vs Catalog) and to determine the retry policy.
Previously, these endpoints required `service:write` permission on _any_
service as a sort of proxy for "is the caller allowed to participate in
the mesh?".
Now, they're called as part of the process of establishing a server
connection by any consumer of the consul-server-connection-manager
library, which will include non-mesh workloads (e.g. Consul KV as a
storage backend for Vault) as well as ancillary components such as
consul-k8s' acl-init process, which likely won't have `service:write`
permission.
So this commit relaxes those requirements to accept *any* valid ACL token
on the following gRPC endpoints:
- `hashicorp.consul.dataplane.DataplaneService/GetSupportedDataplaneFeatures`
- `hashicorp.consul.serverdiscovery.ServerDiscoveryService/WatchServers`
- `hashicorp.consul.connectca.ConnectCAService/WatchRoots`
Fix agent cache incorrectly notifying unchanged protobufs.
This change fixes a situation where the protobuf private fields
would be read by reflect.DeepEqual() and indicate data was modified.
This resulted in change notifications being fired every time, which
could cause performance problems in proxycfg.
This gets the extensions information for the local service into the snapshot and ExtensionConfigurations for a proxy. It grabs the extensions from config entries and puts them in structs.NodeService.Proxy field, which already is copied into the config snapshot.
Also:
* add EnvoyExtensions to api.AgentService so that it matches structs.NodeService
* extensions: refactor PluginConfiguration into a more generic type
ExtensionConfiguration
Also:
* adds endpoints configuration to lambda golden tests
* uses string constant for builtin/aws/lambda
Co-authored-by: Eric <eric@haberkorn.co>
* Rate limiting handler - ensure configuration has changed before modifying limiters
* Updating test to validate arguments to UpdateConfig
* Removing duplicate test. Updating mock.
* Renaming NullRateLimiter to NullRequestLimitsHandler
* Rate Limit Handler - ensure rate limiting is not in the code path when not configured
* Update agent/consul/rate/handler.go
Co-authored-by: Dhia Ayachi <dhia@hashicorp.com>
* formatting handler.go
* Rate limiting handler - ensure configuration has changed before modifying limiters
* Updating test to validate arguments to UpdateConfig
* Removing duplicate test. Updating mock.
* adding logging for when UpdateConfig is called but the config has not changed.
* Update agent/consul/rate/handler.go
Co-authored-by: Dhia Ayachi <dhia@hashicorp.com>
* Update agent/consul/rate/handler_test.go
Co-authored-by: Dan Upton <daniel@floppy.co>
* modifying existing variable name based on pr feedback
* updating a broken merge conflict;
Co-authored-by: Dhia Ayachi <dhia@hashicorp.com>
Co-authored-by: Dan Upton <daniel@floppy.co>
* Rate limiting handler - ensure configuration has changed before modifying limiters
* Updating test to validate arguments to UpdateConfig
* Removing duplicate test. Updating mock.
* adding logging for when UpdateConfig is called but the config has not changed.
* Update agent/consul/rate/handler.go
Co-authored-by: Dhia Ayachi <dhia@hashicorp.com>
Co-authored-by: Dhia Ayachi <dhia@hashicorp.com>
* add functions for returning the max and min Envoy major versions
- added an UnsupportedEnvoyVersions list
- removed an unused error from TestDetermineSupportedProxyFeaturesFromString
- modified minSupportedVersion to use the function for getting the Min Envoy major version. Using just the major version without the patch is equivalent to using `.0`
* added a function for executing the envoy --version command
- added a new exec.go file to not be locked to unix system
* added envoy version check when using consul connect envoy
* added changelog entry
* added docs change
The new balancer is a patched version of gRPC's default pick_first balancer
which removes the behavior of preserving the active subconnection if
a list of new addresses contains the currently active address.
* change to perform all tree writes in the same go routine to avoid race condition.
* rename runStoreOnce to reconcile
* Apply suggestions from code review
Co-authored-by: Dan Upton <daniel@floppy.co>
* reduce nesting
Co-authored-by: Dan Upton <daniel@floppy.co>
* server: add placeholder glue for rate limit handler
This commit adds a no-op implementation of the rate-limit handler and
adds it to the `consul.Server` struct and setup code.
This allows us to start working on the net/rpc and gRPC interceptors and
config logic.
* Add handler errors
* Set the global read and write limits
* fixing multilimiter moving packages
* Fix typo
* Simplify globalLimit usage
* add multilimiter and tests
* exporting LimitedEntity
* Apply suggestions from code review
Co-authored-by: John Murret <john.murret@hashicorp.com>
* add config update and rename config params
* add doc string and split config
* Apply suggestions from code review
Co-authored-by: Dan Upton <daniel@floppy.co>
* use timer to avoid go routine leak and change the interface
* add comments to tests
* fix failing test
* add prefix with config edge, refactor tests
* Apply suggestions from code review
Co-authored-by: Dan Upton <daniel@floppy.co>
* refactor to apply configs for limiters under a prefix
* add fuzz tests and fix bugs found. Refactor reconcile loop to have a simpler logic
* make KeyType an exported type
* split the config and limiter trees to fix race conditions in config update
* rename variables
* fix race in test and remove dead code
* fix reconcile loop to not create a timer on each loop
* add extra benchmark tests and fix tests
* fix benchmark test to pass value to func
* server: add placeholder glue for rate limit handler
This commit adds a no-op implementation of the rate-limit handler and
adds it to the `consul.Server` struct and setup code.
This allows us to start working on the net/rpc and gRPC interceptors and
config logic.
* Set the global read and write limits
* fixing multilimiter moving packages
* add server configuration for global rate limiting.
* remove agent test
* remove added stuff from handler
* remove added stuff from multilimiter
* removing unnecessary TODOs
* Removing TODO comment from handler
* adding in defaulting to infinite
* add disabled status in there
* adding in documentation for disabled mode.
* make disabled the default.
* Add mock and agent test
* addig documentation and missing mock file.
* Fixing test TestLoad_IntegrationWithFlags
* updating docs based on PR feedback.
* Updating Request Limits mode to use int based on PR feedback.
* Adding RequestLimits struct so we have a nested struct in ReloadableConfig.
* fixing linting references
* Update agent/consul/rate/handler.go
Co-authored-by: Dan Upton <daniel@floppy.co>
* Update agent/consul/config.go
Co-authored-by: Dan Upton <daniel@floppy.co>
* removing the ignore of the request limits in JSON. addingbuilder logic to convert any read rate or write rate less than 0 to rate.Inf
* added conversion function to convert request limits object to handler config.
* Updating docs to reflect gRPC and RPC are rate limit and as a result, HTTP requests are as well.
* Updating values for TestLoad_FullConfig() so that they were different and discernable.
* Updating TestRuntimeConfig_Sanitize
* Fixing TestLoad_IntegrationWithFlags test
* putting nil check in place
* fixing rebase
* removing change for missing error checks. will put in another PR
* Rebasing after default multilimiter config change
* resolving rebase issues
* updating reference for incomingRPCLimiter to use interface
* updating interface
* Updating interfaces
* Fixing mock reference
Co-authored-by: Daniel Upton <daniel@floppy.co>
Co-authored-by: Dhia Ayachi <dhia@hashicorp.com>
* feat(ingress-gateway): support outlier detection of upstream service for ingress gateway
* changelog
Co-authored-by: Eric Haberkorn <erichaberkorn@gmail.com>
Implements the gRPC middleware for rate-limiting as a tap.ServerInHandle
function (executed before the request is unmarshaled).
Mappings between gRPC methods and their operation type are generated by
a protoc plugin introduced by #15564.
Adds a no-op implementation of the rate-limit handler and exposes
it on the consul.Server struct.
It allows us to start working on the net/rpc and gRPC interceptors
and config (re)loading logic, without having to implement the full
handler up-front.
Co-authored-by: John Murret <john.murret@hashicorp.com>
Co-authored-by: Dhia Ayachi <dhia@hashicorp.com>
* add multilimiter and tests
* exporting LimitedEntity
* go mod tidy
* Apply suggestions from code review
Co-authored-by: John Murret <john.murret@hashicorp.com>
* add config update and rename config params
* add doc string and split config
* Apply suggestions from code review
Co-authored-by: Dan Upton <daniel@floppy.co>
* use timer to avoid go routine leak and change the interface
* add comments to tests
* fix failing test
* add prefix with config edge, refactor tests
* Apply suggestions from code review
Co-authored-by: Dan Upton <daniel@floppy.co>
* refactor to apply configs for limiters under a prefix
* add fuzz tests and fix bugs found. Refactor reconcile loop to have a simpler logic
* make KeyType an exported type
* split the config and limiter trees to fix race conditions in config update
* rename variables
* fix race in test and remove dead code
* fix reconcile loop to not create a timer on each loop
* add extra benchmark tests and fix tests
* fix benchmark test to pass value to func
* use a separate go routine to write limiters (#15643)
* use a separate go routine to write limiters
* Add updating limiter when another limiter is created
* fix waiter to be a ticker, so we commit more than once.
* fix tests and add tests for coverage
* unexport members and add tests
* make UpdateConfig thread safe and multi call to Run safe
* replace swith with if
* fix review comments
* replace time.sleep with retries
* fix flaky test and remove unnecessary init
* fix test races
* remove unnecessary negative test case
* remove fixed todo
Co-authored-by: John Murret <john.murret@hashicorp.com>
Co-authored-by: Dan Upton <daniel@floppy.co>
* integ-test: fix flaky test - case-cfg-splitter-peering-ingress-gateways
* add retry peering to all peering cases
Co-authored-by: Dan Stough <dan.stough@hashicorp.com>
Fix local mesh gateway with peering discovery chains.
Prior to this patch, discovery chains with peers would not
properly honor the mesh gateway mode for two reasons.
1. An incorrect target upstream ID was used to lookup the
mesh gateway mode. To fix this, the parent upstream uid is
now used instead of the discovery-chain-target-uid to find
the intended mesh gateway mode.
2. The watch for local mesh gateways was never initialized
for discovery chains. To fix this, the discovery chains are
now scanned, and a local GW watch is spawned if: the mesh
gateway mode is local and the target is a peering connection.
It turns out that by default the dev mode vault server will attempt to interact with the
filesystem to store the provided root token. If multiple vault instances are running
they'll all awkwardly share the filesystem and if timing results in one server stopping
while another one is starting then the starting one will error with:
Error initializing Dev mode: rename /home/circleci/.vault-token.tmp /home/circleci/.vault-token: no such file or directory
This change uses `-dev-no-store-token` to bypass that source of flakes. Also the
stdout/stderr from the vault process is included if the test fails.
The introduction of more `t.Parallel` use in https://github.com/hashicorp/consul/pull/15669
increased the likelihood of this failure, but any of the tests with multiple vaults in use
(or running multiple package tests in parallel that all use vault) were eventually going
to flake on this.
All of the current integration tests where Vault is the Connect CA now use non-root tokens for the test. This helps us detect privilege changes in the vault model so we can keep our guides up to date.
One larger change was that the RenewIntermediate function got refactored slightly so it could be used from a test, rather than the large duplicated function we were testing in a test which seemed error prone.
The fix outlined and merged in #15253 fixed the issue as it occurs in the primary
DC. There is a similar issue that arises when vault is used as the Connect CA in a
secondary datacenter that is fixed by this PR.
Additionally: this PR adds support to run the existing suite of vault related integration
tests against the last 4 versions of vault (1.9, 1.10, 1.11, 1.12)
* integ-test: test consul upgrade from the snapshot of a running cluster
* use Target version as default
Co-authored-by: Dan Stough <dan.stough@hashicorp.com>
Chris S. Kim