Derive architecture from underlying runner machine architecture

[bbednarek]

Description:
The target architecture parameter has default value: x64. It would be nice to derive it from underlying runner machine architecture e.g. if the runners run on ARM64 then default value would be aarch64.

Justification:
The aim is to keep the github runner pipelines agnostic to the underlying architecture of the machine where it runs e.g. we are migrating from X64 to ARM64 machines and it would be great to keep generic pipeline with a following step

      - uses: actions/setup-java@v3
        with:
          distribution: 'adopt'
          java-version: '17'
          cache: 'gradle'

instead of specifying architecture parameter. Such a change would be backward compatible, because the default value x64 would stay if underlying machine is X64.

Alternative solution would be to accept RUNNER_ARCH environment variable as default, but even now supplying it without additional mapping is not possible, because possible values (X86, X64, ARM, or ARM64) are not compatible with architecture parameter.

Are you willing to submit a PR?
I am not familiar with Typescript, but I can try :)

[dmitry-shibanov]

Hello @bbednarek. Thank you for your feature request. Actually, we had a similar pull request to resolve the issue. Does the issue reproduce on the self-hosted agent ?

Could you please send the SHA for setup-java ? You can find it in Set up job step:

[bbednarek]

@dmitry-shibanov thanks for the quick suggestion. I double check it and it turns out that I was using actions/setup-java@v2. Once I upgraded to actions/setup-java@v3 everything works.
It would be nice to update documentation though.

[dmitry-shibanov]

Thank you for your response @bbednarek. I'll keep the issue opened until we make changes to the documentation.

[panticmilos]

hi @bbednarek, I will close this issue since we adapted the documentation by your suggestion :)