Commit Graph

9 Commits

Author SHA1 Message Date
Paul Banks f4257f91f6 Set gRPC keepalives to mirror Yamux keepalive behaviour 2021-04-07 14:09:22 +01:00
Daniel Nephin 956bff398a grpc: fix grpc metrics
defaultMetrics was being set at package import time, which meant that it received an instance of
the original default. But lib/telemetry.InitTelemetry sets a new global when it is called.

This resulted in the metrics being sent nowhere.

This commit changes defaultMetrics to be a function, so it will return the global instance when
called. Since it is called after InitTelemetry it will return the correct metrics instance.
2020-11-11 14:27:25 -05:00
Daniel Nephin 87793cd090 agent/grpc: pass metrics to constructor
Instead of referencing a package var. This does not fix the flaky test, but it seems more correct.
2020-10-27 16:34:17 -04:00
Daniel Nephin 7e338693a8 agent/grpc: use a separate channel for closing the Accept
Closing l.conns can lead to a race and a 'panic: send on closed chan' when a
connection is in the middle of being handled when the server is shutting down.

Found using '-race -count=800'
2020-10-27 16:34:15 -04:00
Daniel Nephin 371ec2d70a 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 5e7b9bffdb grpc: restore integration tests for grpc client conn pool
Add a fake rpc Listener
2020-09-24 12:53:14 -04:00
Daniel Nephin 1e40f00567 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
Daniel Nephin 1a930fcf75 grpc: Add a simple test service for testing the gRPC server 2020-09-08 12:10:43 -04:00
Daniel Nephin 863a9df951 server: add gRPC server for streaming events
Includes a stats handler and stream interceptor for grpc metrics.

Co-authored-by: Paul Banks <banks@banksco.de>
2020-09-08 12:10:41 -04:00