Finalize the value of more types of task input and output properties when the task starts execution

[adammurdoch]

#7371 added support to finalize the value of Property typed input and output properties of a task when the task starts execution. We should also finalize the value of input and output properties with other types, such as FileCollection, FileTree, DomainObjectCollection and so on.

This fix should only apply to properties without setter methods. Feel free to raise another issue for these properties, though, which we can implement as another increment.

Expected Behavior

No changes to an input or output property of a task are observable once the task has started execution.

This has a number of immediate benefits:

• Expensive values are calculated once and then the value reused for task input fingerprinting, snapshotting and by the task action.
• The same value is used for each of these things, plus by any tasks that use the task outputs.

This also unblocks potential future performance improvements such as parallel file/directory fingerprinting and isolated task action execution.

Current Behavior

The value of some task input and output properties can be changed during task execution.

[adammurdoch]

#9766 adds support for ConfigurableFileCollection.

[stale]

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[stale]

This issue has been automatically closed due to inactivity. If you can reproduce this on a recent version of Gradle or if you have a good use case for this feature, please feel free to reopen the issue with steps to reproduce, a quick explanation of your use case or a high-quality pull request.

[lptr]

We are working on this now.