Set max step duration dynamically?

[comtihon]

I have a step (gsutil rsync) which sometimes hangs forever. I know the amount of files to be synced before, so I'd like to set up a timeout for rsync step based on it.
How can I do it?
I've tried with both activeDeadlineSeconds and maxDuration but they seem to be static (I can't reference them via one step's output goes to this step input).
If I do it in the template level via jinja template activeDeadlineSeconds: "{{workflow.parameters.number_of_photos | int * 2}}" it also fails to resolve it.

[agilgur5]

If I do it in the template level via jinja template activeDeadlineSeconds: "{{workflow.parameters.number_of_photos | int * 2}}" it also fails to resolve it.

Templating isn't done via Jinja and doesn't follow the syntax you used here. Please see the "Expression" docs.

I'm not sure if activeDeadlineSeconds is templatable, but you'd need the proper syntax either way.
If it isn't, you should be able to workaround it with podSpecPatch

[comtihon]

Thank you. I found the way how to make activeDeadlineSeconds dynamic via podSpecPatch.

[comtihon]

I found the solution via podSpecPatch. It's the only option activeDeadlineSeconds can get the dynamic value.
the full example is here:

metadata:
  name: test-deadline
  namespace: argo-events
  labels:
    example: 'true'
spec:
  entrypoint: example

  templates:
    - name: example
      dag:
        tasks:
          - name: generate-value
            template: generate-value
          - name: obtain
            template: obtain
            arguments:
              parameters:
                - name: timeout
                  value: "{{tasks.generate-value.outputs.parameters.value}}"

    - name: generate-value
      script:
        image: alpine:3.7
        command: [sh]
        source: |
          echo 10 > /tmp/output.txt
      outputs:
        parameters:
          - name: value
            valueFrom:
              path: /tmp/output.txt
    - name: obtain
      inputs:
        parameters:
          - name: timeout
      podSpecPatch: '{"activeDeadlineSeconds":{{inputs.parameters.timeout}}}'
      script:
          image: alpine:3.7
          command: [sh]
          source: |
              echo "Simulating task for {{inputs.parameters.timeout}} seconds."
              sleep 20