Trigger existing Argo Workflow in sensor

[minty99]

1. I made Workflow Templates in Argo Workflow Web UI, like this:

metadata:
  name: gpu-job-test
  namespace: argo
  selfLink: /apis/argoproj.io/v1alpha1/namespaces/argo/workflowtemplates/gpu-job-test
  uid: 03355f1c-738a-49d3-88a8-3e677593d6f4
  resourceVersion: '627875'
  generation: 1
  creationTimestamp: '2021-05-28T09:31:11Z'
  labels:
    example: 'true'
    workflows.argoproj.io/creator: system-serviceaccount-argo-argo-server
spec:
  templates:
    - name: steps
      inputs: {}
      outputs: {}
      metadata: {}
      dag:
        tasks:
          - name: n1
            template: job
            arguments:
              parameters:
                - name: msg
                  value: n1
          - name: n2
            template: job
            arguments:
              parameters:
                - name: msg
                  value: n2
            dependencies:
              - n1
          - name: n3
            template: job
            arguments:
              parameters:
                - name: msg
                  value: n3
            dependencies:
              - n1
          - name: n4
            template: job
            arguments:
              parameters:
                - name: msg
                  value: n4
            dependencies:
              - n3
          - name: n5
            template: job
            arguments:
              parameters:
                - name: msg
                  value: n5
            dependencies:
              - n2
    - name: job
      inputs:
        parameters:
          - name: msg
      outputs: {}
      metadata: {}
      container:
        name: ''
        image: IMAGE_NAME
        env:
          - name: MESSAGE
            value: '{{inputs.parameters.msg}}'
        resources:
          limits:
            cpu: '14'
            memory: 127Gi
            nvidia.com/gpu: '1'
          requests:
            cpu: '7'
            memory: 63Gi
            nvidia.com/gpu: '1'
  entrypoint: steps
  arguments: {}
  ttlStrategy:
    secondsAfterCompletion: 300
  podGC:
    strategy: OnPodCompletion

2. I made sensor like this:

metadata:
  name: webhook
  namespace: argo
  selfLink: /apis/argoproj.io/v1alpha1/namespaces/argo/sensors/webhook
  uid: a820d9c5-4210-410b-9358-e03f39464a7c
  resourceVersion: '9091523'
  generation: 13
  creationTimestamp: '2021-05-27T07:57:22Z'
  finalizers:
    - sensor-controller
spec:
  dependencies:
    - name: test-dep
      eventSourceName: webhook
      eventName: test
  triggers:
    - template:
        name: webhook-sensor-test
        argoWorkflow:
          source:
            resource:
              apiVersion: argoproj.io/v1alpha1
              kind: Workflow
              metadata:
                name: gpu-job-test
                namespace: argo
          operation: submit
          group: argoproj.io
          version: v1alpha1
          resource: workflows
  template:
    serviceAccountName: operate-workflow-sa

I saw this discussion and tried to make similar one.
However I got this error in sensor: Failed to submit workflow: spec.entrypoint is required

How can I fix this error? It seems that the sensor fails to find the workflow template "gpu-job-test".

[whynowy]

You are using operation: submit a workflow, so a complete workflow spec needs to be specified, to reference a template in the workflow spec, please check workflow docs.

              apiVersion: argoproj.io/v1alpha1
              kind: Workflow
              metadata:
                name: gpu-job-test
                namespace: argo
             spec:
                xxxxx

[minty99]

Thanks! I was confused name in metadata with the workflow template name. I succeeded by below code:

spec:
  dependencies:
    - name: test-dep
      eventSourceName: webhook
      eventName: test
  triggers:
    - template:
        name: webhook-sensor-test
        argoWorkflow:
          source:
            resource:
              apiVersion: argoproj.io/v1alpha1
              kind: Workflow
              metadata:
                name: gpu-test-workflow
                namespace: argo
              spec:
                workflowTemplateRef:
                  name: gpu-job-test