broken-dag-example.yaml

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: dag-diamond-
spec:
  entrypoint: diamond
  templates:
  - name: diamond
    dag:
      tasks:
      - name: A
        template: echo
        arguments:
          parameters: [{name: message, value: A}]
      - name: B
        dependencies: [A]
        template: echo-with-input
        arguments:
          parameters: [{name: message, value: B}]
          artifacts:  [{name: newls,  from: tasks.A.outputs.artifacts.ls }]
        when: "'{{tasks.A.outputs.parameters.id}}' == 'A'"
      - name: C
        dependencies: [A]
        template: echo-with-input
        arguments:
          parameters: [{name: message, value: C}]
          artifacts:  [{name: newls,  from: tasks.A.outputs.artifacts.ls }]
        when: "'{{tasks.A.outputs.parameters.id}}' == 'X'"
      - name: B2
        dependencies: [B]
        template: echo
        arguments:
          parameters: [{name: message, value: B}]
      - name: C2
        dependencies: [C]
        template: echo-with-input
        arguments:
          parameters: [{name: message, value: C}]
          artifacts:  [{name: newls,  from: tasks.C.outputs.artifacts.ls }]
        when: "'{{tasks.A.outputs.parameters.id}}' == 'X'"
      - name: D
        dependencies: [B2, C2]
        template: echo
        arguments:
          parameters: [{name: message, value: D}]

# Templates for containers.
  - name: echo
    inputs:
      parameters:
      - name: message
    outputs:
      parameters:
      - name: id
        valueFrom:
          path: /tmp/id
      artifacts:
      - name: ls
        path: /tmp/art
        archive:
          none: {}
    script:
      image: alpine:3.7
      command: [sh]
      source: |
        echo "Hello. This is {{inputs.parameters.message}}"
        cp /bin/ls /tmp/art
        echo {{inputs.parameters.message}} > /tmp/id

  - name: echo-with-input
    inputs:
      parameters:
      - name: message
      artifacts:
      - name: newls
        path: /tmp/newls
    outputs:
      parameters:
      - name: id
        valueFrom:
          path: /tmp/id
      artifacts:
      - name: ls
        path: /tmp/art
        archive:
          none: {}
    script:
      image: alpine:3.7
      command: [sh]
      source: |
        echo "Hello. This is {{inputs.parameters.message}}"
        cp /bin/ls /tmp/art
        echo {{inputs.parameters.message}} > /tmp/id