03aa6106ff
We noticed that TestUpstreamListener would deadlock sometimes when run with the race detector. While debugging this issue I found and fixed the following problems. 1. the net.Listener was not being closed properly when Listener.Stop was called. This caused the Listener.Serve goroutine to run forever. Fixed by storing a reference to net.Listener and closing it properly when Listener.Stop is called. 2. call connWG.Add in the correct place. WaitGroup.Add must be called before starting a goroutine, not from inside the goroutine. 3. Set metrics config EnableRuntimeMetrics to `false` so that we don't start a background goroutine in each test for no reason. There is no way to shutdown this goroutine, and it was an added distraction while debugging these timeouts. 5. two tests were calling require.NoError from a goroutine. require.NoError calls t.FailNow, which MUST be called from the main test goroutine. Instead use t.Errorf, which can be called from other goroutines and will still fail the test. 6. `assertCurrentGaugeValue` wass breaking out of a for loop, which would cause the `RWMutex.RUnlock` to be missed. Fixed by calling unlock before `break`. The core issue of a deadlock was fixed by https://github.com/armon/go-metrics/pull/124. |
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| .. | ||
| config.go | ||
| config_test.go | ||
| conn.go | ||
| conn_test.go | ||
| listener.go | ||
| listener_test.go | ||
| proxy.go | ||
| proxy_test.go | ||
| testing.go | ||