Detect missing panic recovery in goroutines in plugins

[mimir-d]

Issue by insomniacslk Tuesday Feb 04, 2020 at 16:25 GMT Originally opened as https://github.com/facebookincubator/contest/issues/5

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Panic in goroutines other than the main one cannot be recovered explicitly, they have to be handled in the goroutine itself[1]. For ConTest this means that if a test step or any other plugin has a goroutine that panics, we are not able to catch it.

We should write a tool to detect (statically or dynamically) whether each spawned goroutine attempts to recover, and warn that the plugin may break the service run.

[1] https://stackoverflow.com/questions/50409011/handling-panics-in-go-routines