Commit Graph

6 Commits (7f47603c1a42bebc859fd670da310560090434da)

Author SHA1 Message Date
Daniel Nephin 29e93f6338 grpc: fix a data race by using a static resolver
We have seen test flakes caused by 'concurrent map read and map write', and the race detector
reports the problem as well (prevent us from running some tests with -race).

The root of the problem is the grpc expects resolvers to be registered at init time
before any requests are made, but we were using a separate resolver for each test.

This commit introduces a resolver registry. The registry is registered as the single
resolver for the consul scheme. Each test uses the Authority section of the target
(instead of the scheme) to identify the resolver that should be used for the test.
The scheme is used for lookup, which is why it can no longer be used as the unique
key.

This allows us to use a lock around the map of resolvers, preventing the data race.
2021-06-02 11:35:38 -04:00
Daniel Nephin 8bcd5040c7 agent/grpc: Add an integration test for ClientPool with TLS
Also deregister the resolver.Builder in tests.
2020-10-27 16:34:18 -04:00
Daniel Nephin df405ac978 agent/grpc: remove misleading warnings from test output
Handle shutdown properly in tests so that the tests don't warn about using a closed connection.
2020-10-27 16:34:16 -04:00
Daniel Nephin d0256a0c07 subscribe: add a stateless subscribe service for the gRPC server
With a Backend that provides access to the necessary dependencies.
2020-10-06 12:49:35 -04:00
Daniel Nephin 2273673500 grpc: restore integration tests for grpc client conn pool
Add a fake rpc Listener
2020-09-24 12:53:14 -04:00
Daniel Nephin 636f76f6f1 agent/grpc: make TestHandler_EmitsStats predictable
Occasionally this test would flake. The flakes were fixed by:

1. Stopping the service and retrying to check on metrics. This way we
   also include the active_streams going to 0 in the metric calls.

2. Using a reference to the global Metrics. This way when other tests
   have background goroutines that are still shutting down, they won't
   emit metrics to the metric instance with the fake Sink. The stats
   test can patch the local reference to the global, so the existing
   statHandlers will continue to emit to the global, but the stats
   test will send all metrics to the replacement.
2020-09-14 19:05:22 -04:00