Source code for tests.system.providers.google.cloud.kubernetes_engine.example_kubernetes_engine_resource
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"""
Example Airflow DAG for Google Kubernetes Engine.
"""
from __future__ import annotations
import os
from datetime import datetime
from airflow.models.dag import DAG
from airflow.providers.google.cloud.operators.kubernetes_engine import (
GKECreateClusterOperator,
GKECreateCustomResourceOperator,
GKEDeleteClusterOperator,
GKEDeleteCustomResourceOperator,
)
from airflow.utils.trigger_rule import TriggerRule
[docs]ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID", "default")
[docs]DAG_ID = "kubernetes_engine_resource"
[docs]GCP_PROJECT_ID = os.environ.get("SYSTEM_TESTS_GCP_PROJECT", "default")
[docs]GCP_LOCATION = "europe-north1-a"
[docs]CLUSTER_NAME = f"gke-resource-{ENV_ID}".replace("_", "-")
[docs]CLUSTER = {"name": CLUSTER_NAME, "initial_node_count": 1}
[docs]PVC_NAME = "test-pvc-name"
[docs]PVC_CONF = f"""
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: {PVC_NAME}
spec:
accessModes:
- ReadWriteOnce
storageClassName: standard
resources:
requests:
storage: 5Gi
"""
with DAG(
DAG_ID,
schedule="@once", # Override to match your needs
start_date=datetime(2021, 1, 1),
catchup=False,
tags=["example"],
) as dag:
[docs] create_cluster = GKECreateClusterOperator(
task_id="create_cluster",
project_id=GCP_PROJECT_ID,
location=GCP_LOCATION,
body=CLUSTER,
)
# [START howto_operator_gke_create_resource]
create_resource_task = GKECreateCustomResourceOperator(
task_id="create_resource_task",
project_id=GCP_PROJECT_ID,
location=GCP_LOCATION,
cluster_name=CLUSTER_NAME,
yaml_conf=PVC_CONF,
)
# [END howto_operator_gke_create_resource]
# [START howto_operator_gke_delete_resource]
delete_resource_task = GKEDeleteCustomResourceOperator(
task_id="delete_resource_task",
project_id=GCP_PROJECT_ID,
location=GCP_LOCATION,
cluster_name=CLUSTER_NAME,
yaml_conf=PVC_CONF,
)
# [END howto_operator_gke_delete_resource]
delete_cluster = GKEDeleteClusterOperator(
task_id="delete_cluster",
name=CLUSTER_NAME,
project_id=GCP_PROJECT_ID,
location=GCP_LOCATION,
trigger_rule=TriggerRule.ALL_DONE,
)
create_cluster >> create_resource_task >> delete_resource_task >> delete_cluster
from tests.system.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.system.utils 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)