Is there a way to get tasks(steps) start_timestamp and end_timestamp in lifecycle hook ?

[sonamdolphin9192]

/Hi,
I want get task(step) start_timestamp and end_timestamp in lifecycle hook in argo workflow.
Here we indicate hook as exit handler-
apiVersion: argoproj.io/v1alpha1 kind: Workflow metadata: generateName: exit-handler-with-param- labels: workflows.argoproj.io/test: "true" annotations: workflows.argoproj.io/description: | onExitTemplate enables workflow to pass the arguments (parameters/Artifacts) to exit handler template. workflows.argoproj.io/version: ">= 3.1.0" spec: entrypoint: main onExit: workflow-level-exit-hanlder templates: - name: main dag: tasks: - name: task-1 template: output hooks: exit: template: exit arguments: parameters: - name: message value: "{{tasks.task-1.message}}"
How can i get task-1 start_timestamp and end_timestamp in exit handler
Please help.

[jswxstw]

As far as I know, workflow level exit handler can only access Global and Exit-Handler variables.

You can try to set start_timestamp/end_timestamp of task/step as global outputs parameters, then exit handler can use them.

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: lifecycle-hook-workflow-level-
spec:
  entrypoint: main
  hooks:
    exit:
      template: hello
  templates:
    - name: main
      steps:
        - - name: step
            template: echo
    - name: echo
      container:
        image: alpine
        command: [sh, -c]
        args: ["date +\"%Y-%m-%d %H:%M:%S\" > /tmp/startedAt.txt"]
      outputs:
        parameters:
          - name: startedAt
            valueFrom:
              path: "/tmp/startedAt.txt"
            globalName: stepStartedAt

    - name: hello
      container:
        image: alpine
        command: [ sh, -c ]
        args: [ "echo {{workflow.outputs.parameters.stepStartedAt}}" ]