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Workflow Of Workflows

Note

This example is a replication of an Argo Workflow example in Hera. The upstream example can be found here.

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from hera.workflows import Parameter, Resource, Step, Steps, Workflow
from hera.workflows.models import WorkflowTemplateRef

w1 = Workflow(
    generate_name="workflow-of-workflows-1-",
    workflow_template_ref=WorkflowTemplateRef(name="{{inputs.parameters.workflowtemplate}}"),
)


w2 = Workflow(
    generate_name="workflow-of-workflows-2-",
    arguments={"message": "{{inputs.parameters.message}}"},
    workflow_template_ref=WorkflowTemplateRef(name="{{inputs.parameters.workflowtemplate}}"),
)

with Workflow(generate_name="workflow-of-workflows-", entrypoint="main") as w:
    res_without_args = Resource(
        name="resource-without-argument",
        inputs=[Parameter(name="workflowtemplate")],
        action="create",
        manifest=w1,
        success_condition="status.phase == Succeeded",
        failure_condition="status.phase in (Failed, Error)",
    )

    res_with_arg = Resource(
        name="resource-with-argument",
        inputs=[
            Parameter(name="workflowtemplate"),
            Parameter(name="message"),
        ],
        action="create",
        manifest=w2,
        success_condition="status.phase == Succeeded",
        failure_condition="status.phase in (Failed, Error)",
    )

    with Steps(name="main"):
        Step(
            name="workflow1",
            template=res_without_args,
            arguments={"workflowtemplate": "workflow-template-submittable"},
        )
        Step(
            name="workflow2",
            template=res_with_arg,
            arguments={
                "workflowtemplate": "workflow-template-submittable",
                "message": "Welcome Argo",
            },
        )

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: workflow-of-workflows-
spec:
  entrypoint: main
  templates:
  - inputs:
      parameters:
      - name: workflowtemplate
    name: resource-without-argument
    resource:
      action: create
      failureCondition: status.phase in (Failed, Error)
      manifest: |
        apiVersion: argoproj.io/v1alpha1
        kind: Workflow
        metadata:
          generateName: workflow-of-workflows-1-
        spec:
          workflowTemplateRef:
            name: {{inputs.parameters.workflowtemplate}}
      successCondition: status.phase == Succeeded
  - inputs:
      parameters:
      - name: workflowtemplate
      - name: message
    name: resource-with-argument
    resource:
      action: create
      failureCondition: status.phase in (Failed, Error)
      manifest: |
        apiVersion: argoproj.io/v1alpha1
        kind: Workflow
        metadata:
          generateName: workflow-of-workflows-2-
        spec:
          arguments:
            parameters:
            - name: message
              value: {{inputs.parameters.message}}
          workflowTemplateRef:
            name: {{inputs.parameters.workflowtemplate}}
      successCondition: status.phase == Succeeded
  - name: main
    steps:
    - - arguments:
          parameters:
          - name: workflowtemplate
            value: workflow-template-submittable
        name: workflow1
        template: resource-without-argument
    - - arguments:
          parameters:
          - name: workflowtemplate
            value: workflow-template-submittable
          - name: message
            value: Welcome Argo
        name: workflow2
        template: resource-with-argument

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