[automation/*] Add support for getting stack outputs using Workspace

[vipentti]

This adds the ability to get the stack outputs using Workspace without having to first create or select a stack.

This was inspired by @komalali's awesome self-service-platyform, specifically these lines.

Regarding the Python implementation, since I'm less familiar with Python:

I'm not sure what is the correct way to avoid circular dependencies, specifically regarding OutputMap, so I figured the simplest way would be to move OutputValue and OutputMap to a separate file _output.py and then import them where necessary.

I'm not sure if this considered a breaking change, which I would like to avoid. Based on my understanding the OutputValue and OutputMap are not part of the public interface since they are not mentioned in automation/__init__.py variable __all__.

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[komalali]

Hey, @vipentti thanks for the PR!

Re: python - you're on the right track.
Specifically, we have named the files starting with an underscore as this is considered "private" in python. We've done this so we can change the file structure without breaking the public API. The public API is exposed through __all__ in automation/__init__.py. As for the fact that OutputValue and OutputMap are not included in __all__ in automation/__init__.py, that is an oversight and they should have been included.

All of that to say:

• Moving OutputMap and OutputValue into _output.py is totally fine and non-breaking.
• We should also include them in __all__ in automation/__init__.py (if you don't mind adding that on).

[komalali]

/run-acceptance-tests

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[komalali]

Pylint errors in the test run are fixed in #6872

[komalali]

LGTM in general, but I would prefer naming it StackOutputs rather than Outputs when on Workspace

[vipentti]

We should also include them in all in automation/init.py (if you don't mind adding that on).

I'll add OutputMap and OutputValue to __all__

LGTM in general, but I would prefer naming it StackOutputs rather than Outputs when on Workspace

This sounds reasonable. So for go, python and nodejs I'll rename Workspace.Outputs as Workspace.StackOutputs and for the dotnet version Workspace.GetStackOutputsAsync

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[komalali]

/run-acceptance-tests

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