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Basic Artifacts

Compare this example to Basic Artifacts to see how the Hera runner simplifies your Artifact code.

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from typing import Annotated

from hera.workflows import (
    Artifact,
    NoneArchiveStrategy,
    Steps,
    Workflow,
    script,
)
from hera.workflows.artifact import ArtifactLoader


@script()
def writer() -> Annotated[str, Artifact(name="out-art", archive=NoneArchiveStrategy())]:
    return "Hello, world!"


@script()
def consumer(
    in_art: Annotated[
        str,
        Artifact(loader=ArtifactLoader.json),
    ],
):
    print(in_art)  # prints `Hello, world!` to `stdout`


with Workflow(generate_name="artifact-", entrypoint="steps") as w:
    with Steps(name="steps"):
        w_ = writer()
        c = consumer(arguments={"in_art": w_.get_artifact("out-art")})

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: artifact-
spec:
  entrypoint: steps
  templates:
  - name: steps
    steps:
    - - name: writer
        template: writer
    - - name: consumer
        template: consumer
        arguments:
          artifacts:
          - name: in_art
            from: '{{steps.writer.outputs.artifacts.out-art}}'
  - name: writer
    outputs:
      artifacts:
      - name: out-art
        archive:
          none: {}
    script:
      image: python:3.9
      source: |-
        import os
        import sys
        sys.path.append(os.getcwd())
        return 'Hello, world!'
      command:
      - python
  - name: consumer
    inputs:
      artifacts:
      - name: in_art
        path: /tmp/hera-inputs/artifacts/in_art
    script:
      image: python:3.9
      source: |-
        import os
        import sys
        sys.path.append(os.getcwd())
        print(in_art)
      command:
      - python

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