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# to you under the Apache License, Version 2.0 (the
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# 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
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from __future__ import annotations
from datetime import datetime
import boto3
from airflow.providers.amazon.aws.operators.rds import (
RdsCreateDbInstanceOperator,
RdsCreateEventSubscriptionOperator,
RdsDeleteDbInstanceOperator,
RdsDeleteEventSubscriptionOperator,
)
from tests_common.test_utils.version_compat import AIRFLOW_V_3_0_PLUS
if AIRFLOW_V_3_0_PLUS:
from airflow.sdk import DAG, chain, task
else:
# Airflow 2 path
from airflow.decorators import task # type: ignore[attr-defined,no-redef]
from airflow.models.baseoperator import chain # type: ignore[attr-defined,no-redef]
from airflow.models.dag import DAG # type: ignore[attr-defined,no-redef,assignment]
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.amazon.aws.utils import ENV_ID_KEY, SystemTestContextBuilder
DAG_ID = "example_rds_event"
sys_test_context_task = SystemTestContextBuilder().build()
@task
def create_sns_topic(env_id) -> str:
return boto3.client("sns").create_topic(Name=f"{env_id}-topic")["TopicArn"]
@task(trigger_rule=TriggerRule.ALL_DONE)
def delete_sns_topic(topic_arn) -> None:
boto3.client("sns").delete_topic(TopicArn=topic_arn)
with DAG(
dag_id=DAG_ID,
schedule="@once",
start_date=datetime(2021, 1, 1),
catchup=False,
) as dag:
test_context = sys_test_context_task()
rds_db_name = f"{test_context[ENV_ID_KEY]}_db"
rds_instance_name = f"{test_context[ENV_ID_KEY]}-instance"
rds_subscription_name = f"{test_context[ENV_ID_KEY]}-subscription"
sns_topic = create_sns_topic(test_context[ENV_ID_KEY])
create_db_instance = RdsCreateDbInstanceOperator(
task_id="create_db_instance",
db_instance_identifier=rds_instance_name,
db_instance_class="db.t4g.micro",
engine="postgres",
rds_kwargs={
"MasterUsername": "rds_username",
# NEVER store your production password in plaintext in a DAG like this.
# Use Airflow Secrets or a secret manager for this in production.
"MasterUserPassword": "rds_password",
"AllocatedStorage": 20,
"DBName": rds_db_name,
"PubliclyAccessible": False,
},
)
# [START howto_operator_rds_create_event_subscription]
create_subscription = RdsCreateEventSubscriptionOperator(
task_id="create_subscription",
subscription_name=rds_subscription_name,
sns_topic_arn=sns_topic,
source_type="db-instance",
source_ids=[rds_instance_name],
event_categories=["availability"],
)
# [END howto_operator_rds_create_event_subscription]
# [START howto_operator_rds_delete_event_subscription]
delete_subscription = RdsDeleteEventSubscriptionOperator(
task_id="delete_subscription",
subscription_name=rds_subscription_name,
)
# [END howto_operator_rds_delete_event_subscription]
delete_subscription.trigger_rule = TriggerRule.ALL_DONE
delete_db_instance = RdsDeleteDbInstanceOperator(
task_id="delete_db_instance",
db_instance_identifier=rds_instance_name,
rds_kwargs={"SkipFinalSnapshot": True},
trigger_rule=TriggerRule.ALL_DONE,
)
chain(
# TEST SETUP
test_context,
sns_topic,
create_db_instance,
# TEST BODY
create_subscription,
delete_subscription,
# TEST TEARDOWN
delete_db_instance,
delete_sns_topic(sns_topic),
)
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: contributing-docs/testing/system_tests.rst)
test_run = get_test_run(dag)