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"""
System test for ComputeEngineInsertInstanceOperator
verifying recreate_if_machine_type_different=True recreates the
correct machine_type instance when machine_type drifts.
"""
from __future__ import annotations
import os
from datetime import datetime
from airflow.models.dag import DAG
from airflow.operators.python import PythonOperator
from airflow.providers.google.cloud.hooks.compute import ComputeEngineHook
from airflow.providers.google.cloud.operators.compute import (
ComputeEngineDeleteInstanceOperator,
ComputeEngineInsertInstanceOperator,
)
try:
from airflow.sdk import TriggerRule
except ImportError:
from airflow.utils.trigger_rule import TriggerRule # type: ignore[no-redef]
from system.google import DEFAULT_GCP_SYSTEM_TEST_PROJECT_ID
[docs]
ENV_ID = os.environ.get("SYSTEM_TESTS_ENV_ID", "default")
[docs]
PROJECT_ID = os.environ.get("SYSTEM_TESTS_GCP_PROJECT") or DEFAULT_GCP_SYSTEM_TEST_PROJECT_ID
[docs]
DAG_ID = "cloud_compute_insert_recreate_if_different"
[docs]
LOCATION = "us-central1-a"
[docs]
INSTANCE_NAME = f"airflow-drift-test-{ENV_ID}"
[docs]
MACHINE_TYPE_A = "n1-standard-1"
[docs]
MACHINE_TYPE_B = "n1-standard-2"
[docs]
BASE_BODY = {
"name": INSTANCE_NAME,
"disks": [
{
"boot": True,
"auto_delete": True,
"initialize_params": {
"disk_size_gb": "10",
"source_image": "projects/debian-cloud/global/images/family/debian-12",
},
}
],
"network_interfaces": [{"network": "global/networks/default"}],
}
[docs]
def assert_machine_type():
hook = ComputeEngineHook()
instance = hook.get_instance(
project_id=PROJECT_ID,
zone=LOCATION,
resource_id=INSTANCE_NAME,
)
machine_type = instance.machine_type.split("/")[-1]
assert machine_type == MACHINE_TYPE_B, f"Expected machine type {MACHINE_TYPE_B}, got {machine_type}"
with DAG(
DAG_ID,
schedule="@once",
start_date=datetime(2021, 1, 1),
catchup=False,
tags=["example", "compute"],
) as dag:
# Step 1: Create with machine type A.
[docs]
create_instance = ComputeEngineInsertInstanceOperator(
task_id="create_instance",
project_id=PROJECT_ID,
zone=LOCATION,
body={
**BASE_BODY,
"machine_type": f"zones/{LOCATION}/machineTypes/{MACHINE_TYPE_A}",
},
)
# Step 2: Re-run with different machine type and recreate recreate_if_machine_type_different=True.
recreate_instance = ComputeEngineInsertInstanceOperator(
task_id="recreate_instance",
project_id=PROJECT_ID,
zone=LOCATION,
body={
**BASE_BODY,
"machine_type": f"zones/{LOCATION}/machineTypes/{MACHINE_TYPE_B}",
},
recreate_if_machine_type_different=True,
)
# Step 3: Validate new machine type.
validate_machine_type = PythonOperator(
task_id="validate_machine_type",
python_callable=assert_machine_type,
)
# Step 4: Cleanup.
delete_instance = ComputeEngineDeleteInstanceOperator(
task_id="delete_instance",
project_id=PROJECT_ID,
zone=LOCATION,
resource_id=INSTANCE_NAME,
trigger_rule=TriggerRule.ALL_DONE,
)
create_instance >> recreate_instance >> validate_machine_type >> delete_instance
# Everything below this line is required for system tests.
from tests_common.test_utils.watcher import watcher
list(dag.tasks) >> watcher()
from tests_common.test_utils.system_tests import get_test_run # noqa: E402
[docs]
test_run = get_test_run(dag)