Source code for tests.system.cncf.kubernetes.example_kubernetes_resource
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"""
This is an example DAG which uses KubernetesCreateResourceOperator and KubernetesDeleteResourceOperator.
In this example, we create two tasks which execute sequentially.
The first task is to create a PVC on Kubernetes cluster.
and the second task is to delete the PVC.
"""
from __future__ import annotations
import os
from datetime import datetime, timedelta
from airflow import DAG
from airflow.providers.cncf.kubernetes.operators.resource import (
KubernetesCreateResourceOperator,
KubernetesDeleteResourceOperator,
)
[docs]pvc_conf = f"""
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: {pvc_name}
spec:
accessModes:
- ReadWriteOnce
storageClassName: standard
resources:
requests:
storage: 5Gi
"""
[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID")
[docs]DAG_ID = "example_kubernetes_resource_operator"
with DAG(
DAG_ID,
default_args={"max_active_runs": 1},
description="create and delete a PVC in a kubernetes",
schedule=timedelta(days=1),
start_date=datetime(2021, 1, 1),
catchup=False,
) as dag:
[docs] t1 = KubernetesCreateResourceOperator(
task_id="create_pvc",
yaml_conf=pvc_conf,
)
t2 = KubernetesDeleteResourceOperator(
task_id="delete_pvc",
yaml_conf=pvc_conf,
)
t1 >> t2
from tests_common.test_utils.watcher import watcher
# This test needs watcher in order to properly mark success/failure
# when "tearDown" task with trigger rule is part of the DAG
list(dag.tasks) >> watcher()
from tests_common.test_utils.system_tests import get_test_run # noqa: E402
# Needed to run the example DAG with pytest (see: tests/system/README.md#run_via_pytest)
[docs]test_run = get_test_run(dag)