#
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# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
"""
Example Airflow DAG that displays interactions with Google Cloud Build.
"""
from __future__ import annotations
import os
from datetime import datetime
from typing import Any, cast
from googleapiclient.discovery import build
from googleapiclient.errors import HttpError
from tests_common.test_utils.version_compat import AIRFLOW_V_3_0_PLUS
if AIRFLOW_V_3_0_PLUS:
from airflow.sdk import task
else:
# Airflow 2 path
from airflow.decorators import task # type: ignore[attr-defined,no-redef]
from airflow.exceptions import AirflowException
from airflow.models.dag import DAG
from airflow.models.xcom_arg import XComArg
from airflow.providers.google.cloud.operators.cloud_build import (
CloudBuildCreateBuildTriggerOperator,
CloudBuildDeleteBuildTriggerOperator,
CloudBuildGetBuildTriggerOperator,
CloudBuildListBuildTriggersOperator,
CloudBuildRunBuildTriggerOperator,
CloudBuildUpdateBuildTriggerOperator,
)
try:
from airflow.sdk import TriggerRule
except ImportError:
# Compatibility for Airflow < 3.1
from airflow.utils.trigger_rule import TriggerRule # type: ignore[no-redef,attr-defined]
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 = "gcp_cloud_build_trigger"
# Repository with this name is expected created within the project $SYSTEM_TESTS_GCP_PROJECT
# If you'd like to run this system test locally, please
# 1. Create Cloud Source Repository
# 2. Push into a master branch the following file:
# providers/google/tests/system/google/cloud/cloud_build/resources/example_cloud_build.yaml
[docs]
GCP_SOURCE_REPOSITORY_NAME = "test-cloud-build-repository"
[docs]
TRIGGER_NAME = f"cloud-build-trigger-{ENV_ID}".replace("_", "-")
[docs]
PROJECT_NUMBER = "{{ task_instance.xcom_pull('get_project_number') }}"
# [START howto_operator_gcp_create_build_trigger_body]
[docs]
create_build_trigger_body = {
"name": TRIGGER_NAME,
"trigger_template": {
"project_id": PROJECT_ID,
"repo_name": GCP_SOURCE_REPOSITORY_NAME,
"branch_name": "master",
},
"filename": "example_cloud_build.yaml",
"service_account": f"projects/{PROJECT_ID}/serviceAccounts/{PROJECT_NUMBER}-compute@developer.gserviceaccount.com",
}
# [END howto_operator_gcp_create_build_trigger_body]
# [START howto_operator_gcp_update_build_trigger_body]
[docs]
update_build_trigger_body = {
"name": TRIGGER_NAME,
"trigger_template": {
"project_id": PROJECT_ID,
"repo_name": GCP_SOURCE_REPOSITORY_NAME,
"branch_name": "master",
},
"filename": "example_cloud_build.yaml",
"service_account": f"projects/{PROJECT_ID}/serviceAccounts/{PROJECT_NUMBER}-compute@developer.gserviceaccount.com",
}
# [END START howto_operator_gcp_update_build_trigger_body]
# [START howto_operator_create_build_from_repo_body]
[docs]
create_build_from_repo_body: dict[str, Any] = {
"source": {"repo_source": {"repo_name": GCP_SOURCE_REPOSITORY_NAME, "branch_name": "master"}},
"steps": [{"name": "ubuntu", "args": ["echo", "Hello world", "sleep 200"]}],
}
# [END howto_operator_create_build_from_repo_body]
@task(task_id="get_project_number")
[docs]
def get_project_number():
"""Helper function to retrieve the number of the project based on PROJECT_ID"""
try:
with build("cloudresourcemanager", "v1") as service:
response = service.projects().get(projectId=PROJECT_ID).execute()
return response["projectNumber"]
except HttpError as exc:
if exc.status_code == 403:
raise AirflowException(
"No project found with specified name, "
"or caller does not have permissions to read specified project"
)
raise exc
with DAG(
DAG_ID,
schedule="@once",
start_date=datetime(2021, 1, 1),
catchup=False,
tags=["example", "cloud_build_trigger"],
) as dag:
# [START howto_operator_create_build_trigger]
[docs]
create_build_trigger = CloudBuildCreateBuildTriggerOperator(
task_id="create_build_trigger", project_id=PROJECT_ID, trigger=create_build_trigger_body
)
# [END howto_operator_create_build_trigger]
build_trigger_id = cast("str", XComArg(create_build_trigger, key="id"))
# [START howto_operator_run_build_trigger]
run_build_trigger = CloudBuildRunBuildTriggerOperator(
task_id="run_build_trigger",
project_id=PROJECT_ID,
trigger_id=build_trigger_id,
source=create_build_from_repo_body["source"]["repo_source"],
)
# [END howto_operator_run_build_trigger]
# [START howto_operator_update_build_trigger]
update_build_trigger = CloudBuildUpdateBuildTriggerOperator(
task_id="update_build_trigger",
project_id=PROJECT_ID,
trigger_id=build_trigger_id,
trigger=update_build_trigger_body,
)
# [END howto_operator_update_build_trigger]
# [START howto_operator_get_build_trigger]
get_build_trigger = CloudBuildGetBuildTriggerOperator(
task_id="get_build_trigger",
project_id=PROJECT_ID,
trigger_id=build_trigger_id,
)
# [END howto_operator_get_build_trigger]
# [START howto_operator_delete_build_trigger]
delete_build_trigger = CloudBuildDeleteBuildTriggerOperator(
task_id="delete_build_trigger",
project_id=PROJECT_ID,
trigger_id=build_trigger_id,
)
# [END howto_operator_delete_build_trigger]
delete_build_trigger.trigger_rule = TriggerRule.ALL_DONE
# [START howto_operator_list_build_triggers]
list_build_triggers = CloudBuildListBuildTriggersOperator(
task_id="list_build_triggers",
project_id=PROJECT_ID,
location="global",
page_size=5,
)
# [END howto_operator_list_build_triggers]
(
# TEST SETUP
get_project_number()
# TEST BODY
>> create_build_trigger
>> run_build_trigger
>> update_build_trigger
>> get_build_trigger
# TEST TEARDOWN
>> delete_build_trigger
>> list_build_triggers
)
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)