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Steps Types

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from hera.workflows import (
    Container,
    Parameter,
    Step,
    Steps,
    Workflow,
    models as m,
)

my_step = Step(
    name="manually-adding-my-step",
    template="whalesay",
    arguments=[Parameter(name="message", value="hello1")],
)


my_steps = [
    Step(
        name="list-of-step-1",
        template="whalesay",
        arguments=[Parameter(name="message", value="hello1")],
    ),
    Step(
        name="list-of-step-2",
        template="whalesay",
        arguments=[Parameter(name="message", value="hello1")],
    ),
]

with Workflow(
    generate_name="steps-",
    entrypoint="hello-hello-hello",
) as w:
    whalesay = Container(
        name="whalesay",
        inputs=[Parameter(name="message")],
        image="docker/whalesay",
        command=["cowsay"],
        args=["{{inputs.parameters.message}}"],
    )

    with Steps(name="hello-hello-hello") as s:
        # Manually add a step defined elsewhere
        s.sub_steps.append(my_step)

        # Manually add a list of steps defined elsewhere as sequential steps
        s.sub_steps.extend(my_steps)

        # Manually add a list of steps defined elsewhere as parallel steps
        s.sub_steps.append(my_steps)

        # Add a step to s implicitly through init
        Step(
            name="implicitly-adding-step-on-init",
            template="whalesay",
            arguments=[Parameter(name="message", value="hello1")],
        )

        # Manually add a model WorkflowStep to s
        s.sub_steps.append(
            m.WorkflowStep(
                name="model-workflow-step",
                template="whalesay",
                arguments=m.Arguments(parameters=[m.Parameter(name="message", value="hello-model1")]),
            )
        )

        with s.parallel() as ps:
            # Add a step to ps implicitly through init
            Step(
                name="parallel-step-1",
                template="whalesay",
                arguments=[Parameter(name="message", value="hello2a")],
            )

            # Manually add a model WorkflowStep to ps
            ps.sub_steps.append(
                m.WorkflowStep(
                    name="parallel-step-2-model-workflow-step",
                    template="whalesay",
                    arguments=m.Arguments(parameters=[m.Parameter(name="message", value="hello-model2b")]),
                )
            )

    # Fully falling back to add a model Template containing a model WorkflowStep
    w.templates.append(
        m.Template(
            name="my-model-template",
            steps=[
                [
                    m.WorkflowStep(
                        name="model-template-workflow-step",
                        template="whalesay",
                        arguments=m.Arguments(parameters=[m.Parameter(name="message", value="hello-model-template")]),
                    )
                ]
            ],
        )
    )

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: steps-
spec:
  entrypoint: hello-hello-hello
  templates:
  - container:
      args:
      - '{{inputs.parameters.message}}'
      command:
      - cowsay
      image: docker/whalesay
    inputs:
      parameters:
      - name: message
    name: whalesay
  - name: hello-hello-hello
    steps:
    - - arguments:
          parameters:
          - name: message
            value: hello1
        name: manually-adding-my-step
        template: whalesay
    - - arguments:
          parameters:
          - name: message
            value: hello1
        name: list-of-step-1
        template: whalesay
    - - arguments:
          parameters:
          - name: message
            value: hello1
        name: list-of-step-2
        template: whalesay
    - - arguments:
          parameters:
          - name: message
            value: hello1
        name: list-of-step-1
        template: whalesay
      - arguments:
          parameters:
          - name: message
            value: hello1
        name: list-of-step-2
        template: whalesay
    - - arguments:
          parameters:
          - name: message
            value: hello1
        name: implicitly-adding-step-on-init
        template: whalesay
    - - arguments:
          parameters:
          - name: message
            value: hello-model1
        name: model-workflow-step
        template: whalesay
    - - arguments:
          parameters:
          - name: message
            value: hello2a
        name: parallel-step-1
        template: whalesay
      - arguments:
          parameters:
          - name: message
            value: hello-model2b
        name: parallel-step-2-model-workflow-step
        template: whalesay
  - name: my-model-template
    steps:
    - - arguments:
          parameters:
          - name: message
            value: hello-model-template
        name: model-template-workflow-step
        template: whalesay

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