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Dynamic Volumes

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from hera.workflows import DAG, Volume, Workflow, script


@script(volumes=Volume(name="v", size="1Gi", mount_path="/mnt/vol"))
def foo():
    import subprocess

    print(subprocess.run("cd && /mnt && df -h", shell=True, capture_output=True).stdout.decode())


with Workflow(generate_name="dynamic-volumes-", entrypoint="d") as w:
    with DAG(name="d"):
        foo()

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: dynamic-volumes-
spec:
  entrypoint: d
  templates:
  - dag:
      tasks:
      - name: foo
        template: foo
    name: d
  - name: foo
    script:
      command:
      - python
      image: python:3.8
      source: 'import os

        import sys

        sys.path.append(os.getcwd())

        import subprocess

        print(subprocess.run(''cd && /mnt && df -h'', shell=True, capture_output=True).stdout.decode())'
      volumeMounts:
      - mountPath: /mnt/vol
        name: v
  volumeClaimTemplates:
  - metadata:
      name: v
    spec:
      accessModes:
      - ReadWriteOnce
      resources:
        requests:
          storage: 1Gi

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