Source code for tests.system.providers.amazon.aws.example_rds_snapshot

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from datetime import datetime

from airflow import DAG
from airflow.decorators import task
from airflow.models.baseoperator import chain
from airflow.providers.amazon.aws.hooks.rds import RdsHook
from airflow.providers.amazon.aws.operators.rds import (
    RdsCopyDbSnapshotOperator,
    RdsCreateDbSnapshotOperator,
    RdsDeleteDbSnapshotOperator,
)
from airflow.providers.amazon.aws.sensors.rds import RdsSnapshotExistenceSensor
from airflow.utils.trigger_rule import TriggerRule
from tests.system.providers.amazon.aws.utils import ENV_ID_KEY, SystemTestContextBuilder

[docs]DAG_ID = 'example_rds_snapshot'
[docs]sys_test_context_task = SystemTestContextBuilder().build()
@task
[docs]def create_rds_instance(db_name, instance_name) -> None: rds_client = RdsHook().get_conn() rds_client.create_db_instance( DBName=db_name, DBInstanceIdentifier=instance_name, AllocatedStorage=20, DBInstanceClass='db.t3.micro', Engine='postgres', MasterUsername='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', ) rds_client.get_waiter('db_instance_available').wait(DBInstanceIdentifier=instance_name)
@task(trigger_rule=TriggerRule.ALL_DONE)
[docs]def delete_rds_instance(instance_name) -> None: rds_client = RdsHook().get_conn() rds_client.delete_db_instance( DBInstanceIdentifier=instance_name, SkipFinalSnapshot=True, ) rds_client.get_waiter('db_instance_deleted').wait(DBInstanceIdentifier=instance_name)
with DAG( dag_id=DAG_ID, schedule='@once', start_date=datetime(2021, 1, 1), tags=['example'], catchup=False, ) as dag:
[docs] 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_snapshot_name = f'{test_context[ENV_ID_KEY]}-snapshot' rds_snapshot_copy_name = f'{rds_snapshot_name}-copy' # [START howto_operator_rds_create_db_snapshot] create_snapshot = RdsCreateDbSnapshotOperator( task_id='create_snapshot', db_type='instance', db_identifier=rds_instance_name, db_snapshot_identifier=rds_snapshot_name, ) # [END howto_operator_rds_create_db_snapshot] # [START howto_sensor_rds_snapshot_existence] snapshot_sensor = RdsSnapshotExistenceSensor( task_id='snapshot_sensor', db_type='instance', db_snapshot_identifier=rds_snapshot_name, target_statuses=['available'], ) # [END howto_sensor_rds_snapshot_existence] # [START howto_operator_rds_copy_snapshot] copy_snapshot = RdsCopyDbSnapshotOperator( task_id='copy_snapshot', db_type='instance', source_db_snapshot_identifier=rds_snapshot_name, target_db_snapshot_identifier=rds_snapshot_copy_name, ) # [END howto_operator_rds_copy_snapshot] # [START howto_operator_rds_delete_snapshot] delete_snapshot = RdsDeleteDbSnapshotOperator( task_id='delete_snapshot', db_type='instance', db_snapshot_identifier=rds_snapshot_name, ) # [END howto_operator_rds_delete_snapshot] snapshot_copy_sensor = RdsSnapshotExistenceSensor( task_id='snapshot_copy_sensor', db_type='instance', db_snapshot_identifier=rds_snapshot_copy_name, target_statuses=['available'], ) delete_snapshot_copy = RdsDeleteDbSnapshotOperator( task_id='delete_snapshot_copy', db_type='instance', db_snapshot_identifier=rds_snapshot_copy_name, ) chain( # TEST SETUP test_context, create_rds_instance(rds_db_name, rds_instance_name), # TEST BODY create_snapshot, snapshot_sensor, copy_snapshot, delete_snapshot, # TEST TEARDOWN snapshot_copy_sensor, delete_snapshot_copy, delete_rds_instance(rds_instance_name), ) 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)

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