Cross test javaagent instrumentation against other instrumentations targeted at the same library?

[trask]

E.g. netty-3.8 instrumentation is tested with netty-4.0 and netty-4.1 instrumentations applied.

Should we apply this pattern to all instrumentations with multiple versions, or decide that the muzzle range checks are all we need and abandon this practice?

[iNikem]

I already expressed my opinion, that we should test with the whole agent, not partial agents prepared specifically for a given module :)

[mateuszrzeszutek]

I already expressed my opinion, that we should test with the whole agent, not partial agents prepared specifically for a given module :)

That indeed sounds like a good idea; especially in light of our recent Armeria vs. Netty discussion 😄
And if we ever need to test a particular instrumentation in isolation, we can create a test suite/set that disables unwanted instrumentations.

[trask]

we should test with the whole agent, not partial agents prepared specifically for a given module

this sounds good to me, any thoughts how to implement?

[iNikem]

we should test with the whole agent, not partial agents prepared specifically for a given module

this sounds good to me, any thoughts how to implement?

io.opentelemetry.instrumentation.javaagent-testing.gradle.kts uses a minimal agent-for-testing and adds module-specific extension. It may depend on the full javaagent instead.

[iNikem]

@anuraaga was against this idea in the past because allegedly building the full agent will take too much time.

[trask]

sounds worth giving it a try and seeing what the perf impact is