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Colored Logs

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 Env, Workflow, script


@script(image="python:3.7", add_cwd_to_sys_path=False, env=[Env(name="PYTHONUNBUFFERED", value="1")])
def whalesay():
    import time  # noqa: I001
    import random

    messages = [
        "No Color",
        "\x1b[30m%s\x1b[0m" % "FG Black",
        "\x1b[32m%s\x1b[0m" % "FG Green",
        "\x1b[34m%s\x1b[0m" % "FG Blue",
        "\x1b[36m%s\x1b[0m" % "FG Cyan",
        "\x1b[41m%s\x1b[0m" % "BG Red",
        "\x1b[43m%s\x1b[0m" % "BG Yellow",
        "\x1b[45m%s\x1b[0m" % "BG Magenta",
    ]
    for i in range(1, 100):
        print(random.choice(messages))
        time.sleep(1)


with Workflow(generate_name="colored-logs-", entrypoint="whalesay") as w:
    whalesay(name="whalesay")

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: colored-logs-
spec:
  entrypoint: whalesay
  templates:
  - name: whalesay
    script:
      command:
      - python
      env:
      - name: PYTHONUNBUFFERED
        value: '1'
      image: python:3.7
      source: |-
        import time
        import random
        messages = ['No Color', '\x1b[30m%s\x1b[0m' % 'FG Black', '\x1b[32m%s\x1b[0m' % 'FG Green', '\x1b[34m%s\x1b[0m' % 'FG Blue', '\x1b[36m%s\x1b[0m' % 'FG Cyan', '\x1b[41m%s\x1b[0m' % 'BG Red', '\x1b[43m%s\x1b[0m' % 'BG Yellow', '\x1b[45m%s\x1b[0m' % 'BG Magenta']
        for i in range(1, 100):
            print(random.choice(messages))
            time.sleep(1)

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