[async-await] Added generation of interceptors

[patskovn]

Currently interceptors does not propagated to calls. Seems like it was forgotten to be implemented in this alpha implementation.

[linux-foundation-easycla]

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• ✅ Nikita (d65921d)

[Lukasa]

Thanks for this! Can you regenerate the various grpc examples? make generate-echo generate-helloworld generate-route-guide generate-normalization should do it.

[patskovn]

Thanks for this! Can you regenerate the various grpc examples? make generate-echo generate-helloworld generate-route-guide generate-normalization should do it.

Done. Async flag set only for echo generation, but I still launch whole generation. It added additional newline to the bottom of files. Not sure is it ok or not :)

[Lukasa]

The extra newlines are fine 😄

[Lukasa]

Do you feel up to writing some tests? I'd love to see a couple of new tests, probably in InterceptorsTests, that validate that the interceptors continue to work correctly in async/await land.

[patskovn]

I decided to create separate test class for async interceptors in analogy with other async tests like GRPCAsyncClientCallTests. I called file InterceptorsAsyncTests so that its be close to default counterpart InterceptorsTests.
Also, writing tests directly in current InterceptorsTests file will cause it suffer from lots of ifdefs and @availables

Waiting for further improvements suggestion 👌

[patskovn]

Hello, @Lukasa! What are next steps to make further progress in this PR? Should I wait more for your review when you will have time or should I improve it somehow?

[glbrntt]

Oops..! Thanks for catching and fixing this @Nekitosss. Would you mind running ./scripts/format.sh to make the CI happy?

[glbrntt]

Great, thanks @Nekitosss 🙏