Source code for tests.system.amazon.aws.example_redshift

#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# 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.

from __future__ import annotations

from datetime import datetime

from airflow.models.baseoperator import chain
from airflow.models.dag import DAG
from airflow.providers.amazon.aws.operators.redshift_cluster import (
    RedshiftCreateClusterOperator,
    RedshiftCreateClusterSnapshotOperator,
    RedshiftDeleteClusterOperator,
    RedshiftDeleteClusterSnapshotOperator,
    RedshiftPauseClusterOperator,
    RedshiftResumeClusterOperator,
)
from airflow.providers.amazon.aws.operators.redshift_data import RedshiftDataOperator
from airflow.providers.amazon.aws.sensors.redshift_cluster import RedshiftClusterSensor
from airflow.utils.trigger_rule import TriggerRule

from providers.tests.system.amazon.aws.utils import ENV_ID_KEY, SystemTestContextBuilder

[docs]DAG_ID = "example_redshift"
# Externally fetched variables:
[docs]SECURITY_GROUP_KEY = "SECURITY_GROUP"
[docs]CLUSTER_SUBNET_GROUP_KEY = "CLUSTER_SUBNET_GROUP"
[docs]sys_test_context_task = ( SystemTestContextBuilder().add_variable(SECURITY_GROUP_KEY).add_variable(CLUSTER_SUBNET_GROUP_KEY).build() )
[docs]DB_LOGIN = "adminuser"
[docs]DB_PASS = "MyAmazonPassword1"
[docs]DB_NAME = "dev"
[docs]POLL_INTERVAL = 10
with DAG( dag_id=DAG_ID, start_date=datetime(2021, 1, 1), schedule="@once", catchup=False, tags=["example"], ) as dag:
[docs] test_context = sys_test_context_task()
env_id = test_context[ENV_ID_KEY] security_group_id = test_context[SECURITY_GROUP_KEY] cluster_subnet_group_name = test_context[CLUSTER_SUBNET_GROUP_KEY] redshift_cluster_identifier = f"{env_id}-redshift-cluster" redshift_cluster_snapshot_identifier = f"{env_id}-snapshot" sg_name = f"{env_id}-sg" # [START howto_operator_redshift_cluster] create_cluster = RedshiftCreateClusterOperator( task_id="create_cluster", cluster_identifier=redshift_cluster_identifier, vpc_security_group_ids=[security_group_id], cluster_subnet_group_name=cluster_subnet_group_name, publicly_accessible=False, cluster_type="single-node", node_type="dc2.large", master_username=DB_LOGIN, master_user_password=DB_PASS, ) # [END howto_operator_redshift_cluster] # [START howto_sensor_redshift_cluster] wait_cluster_available = RedshiftClusterSensor( task_id="wait_cluster_available", cluster_identifier=redshift_cluster_identifier, target_status="available", poke_interval=15, timeout=60 * 30, ) # [END howto_sensor_redshift_cluster] # [START howto_operator_redshift_create_cluster_snapshot] create_cluster_snapshot = RedshiftCreateClusterSnapshotOperator( task_id="create_cluster_snapshot", cluster_identifier=redshift_cluster_identifier, snapshot_identifier=redshift_cluster_snapshot_identifier, poll_interval=30, max_attempt=100, retention_period=1, wait_for_completion=True, ) # [END howto_operator_redshift_create_cluster_snapshot] wait_cluster_available_before_pause = RedshiftClusterSensor( task_id="wait_cluster_available_before_pause", cluster_identifier=redshift_cluster_identifier, target_status="available", poke_interval=15, timeout=60 * 30, ) # [START howto_operator_redshift_pause_cluster] pause_cluster = RedshiftPauseClusterOperator( task_id="pause_cluster", cluster_identifier=redshift_cluster_identifier, ) # [END howto_operator_redshift_pause_cluster] wait_cluster_paused = RedshiftClusterSensor( task_id="wait_cluster_paused", cluster_identifier=redshift_cluster_identifier, target_status="paused", poke_interval=30, timeout=60 * 30, ) # [START howto_operator_redshift_resume_cluster] resume_cluster = RedshiftResumeClusterOperator( task_id="resume_cluster", cluster_identifier=redshift_cluster_identifier, ) # [END howto_operator_redshift_resume_cluster] wait_cluster_available_after_resume = RedshiftClusterSensor( task_id="wait_cluster_available_after_resume", cluster_identifier=redshift_cluster_identifier, target_status="available", poke_interval=30, timeout=60 * 30, ) # [START howto_operator_redshift_data] create_table_redshift_data = RedshiftDataOperator( task_id="create_table_redshift_data", cluster_identifier=redshift_cluster_identifier, database=DB_NAME, db_user=DB_LOGIN, sql=""" CREATE TABLE IF NOT EXISTS fruit ( fruit_id INTEGER, name VARCHAR NOT NULL, color VARCHAR NOT NULL ); """, poll_interval=POLL_INTERVAL, wait_for_completion=True, ) # [END howto_operator_redshift_data] insert_data = RedshiftDataOperator( task_id="insert_data", cluster_identifier=redshift_cluster_identifier, database=DB_NAME, db_user=DB_LOGIN, sql=""" INSERT INTO fruit VALUES ( 1, 'Banana', 'Yellow'); INSERT INTO fruit VALUES ( 2, 'Apple', 'Red'); INSERT INTO fruit VALUES ( 3, 'Lemon', 'Yellow'); INSERT INTO fruit VALUES ( 4, 'Grape', 'Purple'); INSERT INTO fruit VALUES ( 5, 'Pear', 'Green'); INSERT INTO fruit VALUES ( 6, 'Strawberry', 'Red'); """, poll_interval=POLL_INTERVAL, wait_for_completion=True, ) # [START howto_operator_redshift_data_session_reuse] create_tmp_table_data_api = RedshiftDataOperator( task_id="create_tmp_table_data_api", cluster_identifier=redshift_cluster_identifier, database=DB_NAME, db_user=DB_LOGIN, sql=""" CREATE TEMPORARY TABLE tmp_people ( id INTEGER, first_name VARCHAR(100), age INTEGER ); """, poll_interval=POLL_INTERVAL, wait_for_completion=True, session_keep_alive_seconds=600, ) insert_data_reuse_session = RedshiftDataOperator( task_id="insert_data_reuse_session", sql=""" INSERT INTO tmp_people VALUES ( 1, 'Bob', 30); INSERT INTO tmp_people VALUES ( 2, 'Alice', 35); INSERT INTO tmp_people VALUES ( 3, 'Charlie', 40); """, poll_interval=POLL_INTERVAL, wait_for_completion=True, session_id="{{ task_instance.xcom_pull(task_ids='create_tmp_table_data_api', key='session_id') }}", ) # [END howto_operator_redshift_data_session_reuse] # [START howto_operator_redshift_delete_cluster] delete_cluster = RedshiftDeleteClusterOperator( task_id="delete_cluster", cluster_identifier=redshift_cluster_identifier, ) # [END howto_operator_redshift_delete_cluster] delete_cluster.trigger_rule = TriggerRule.ALL_DONE # [START howto_operator_redshift_delete_cluster_snapshot] delete_cluster_snapshot = RedshiftDeleteClusterSnapshotOperator( task_id="delete_cluster_snapshot", cluster_identifier=redshift_cluster_identifier, snapshot_identifier=redshift_cluster_snapshot_identifier, ) # [END howto_operator_redshift_delete_cluster_snapshot] chain( # TEST SETUP test_context, # TEST BODY create_cluster, wait_cluster_available, create_cluster_snapshot, wait_cluster_available_before_pause, pause_cluster, wait_cluster_paused, resume_cluster, wait_cluster_available_after_resume, create_table_redshift_data, insert_data, delete_cluster_snapshot, delete_cluster, ) # Test session reuse in parallel chain( wait_cluster_available_after_resume, create_tmp_table_data_api, insert_data_reuse_session, delete_cluster_snapshot, ) from dev.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 dev.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)

Was this entry helpful?