Task Result path should be available as a variable

[ghost]

Expected Behavior

The path for a task result should be available as a variable that can be interpolated into scripts. Example YAML we'd like to support:

  # Task Spec
  results:
    - name: current-date-unix-timestamp
      description: The date in unix timestamp format.
  steps:
    - name: print-date-unix-timestamp
      image: bash:latest
      script: date +%s | tee $(results.current-date-unix-timestamp.path)

In the above example we'd like $(results.current-date-unix-timestamp.path) to resolve to /tekton/results/current-date-unix-timestamp.

Actual Behavior

At the moment the user has to hard-code the task result path into their Task's script. In other words, if a user wants their Step Container to emit a task result then they need to physically write out /tekton/results/result-name in their code.

Additional Info

Suggested by @afrittoli here.

[othomann]

@sbwsg #2018 has been merged. So this issue can be closed. I cannot assign it to me.

[ghost]

👍 thanks @othomann !