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Label Value From Workflow

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 Container, Workflow
from hera.workflows.models import Arguments, LabelValueFrom, Parameter, WorkflowMetadata

with Workflow(
    arguments=Arguments(
        parameters=[
            Parameter(
                name="foo",
                value="bar",
            )
        ],
    ),
    api_version="argoproj.io/v1alpha1",
    kind="Workflow",
    annotations={
        "workflows.argoproj.io/version": ">= v3.3.0",
        "workflows.argoproj.io/description": "This examples show you how to add labels based on an expression.\nYou can then query workflows based on the parameters they were invoked with.\nIn this specific case, the value of foo will set as a label on the workflow.\n",
    },
    generate_name="label-value-from-",
    entrypoint="main",
    workflow_metadata=WorkflowMetadata(
        labels_from={
            "foo": LabelValueFrom(
                expression="workflow.parameters.foo",
            )
        },
    ),
) as w:
    Container(
        name="main",
        image="argoproj/argosay:v2",
    )

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: label-value-from-
  annotations:
    workflows.argoproj.io/description: |
      This examples show you how to add labels based on an expression.
      You can then query workflows based on the parameters they were invoked with.
      In this specific case, the value of foo will set as a label on the workflow.
    workflows.argoproj.io/version: '>= v3.3.0'
spec:
  entrypoint: main
  templates:
  - name: main
    container:
      image: argoproj/argosay:v2
  arguments:
    parameters:
    - name: foo
      value: bar
  workflowMetadata:
    labelsFrom:
      foo:
        expression: workflow.parameters.foo

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