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from __future__ import annotations
from datetime import datetime
import boto3
from airflow import settings
from airflow.decorators import task
from airflow.models import Connection
from airflow.models.baseoperator import chain
from airflow.models.dag import DAG
from airflow.providers.amazon.aws.hooks.redshift_cluster import RedshiftHook
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.providers.common.sql.operators.sql import SQLExecuteQueryOperator
from airflow.utils.trigger_rule import TriggerRule
from tests.system.providers.amazon.aws.utils import ENV_ID_KEY, SystemTestContextBuilder
from tests.system.providers.amazon.aws.utils.ec2 import get_default_vpc_id
[docs]DAG_ID = "example_redshift"
[docs]DB_PASS = "MyAmazonPassword1"
[docs]IP_PERMISSION = {
"FromPort": -1,
"IpProtocol": "All",
"IpRanges": [{"CidrIp": "0.0.0.0/0", "Description": "Test description"}],
}
[docs]sys_test_context_task = SystemTestContextBuilder().build()
@task
[docs]def create_connection(conn_id_name: str, cluster_id: str):
redshift_hook = RedshiftHook()
cluster_endpoint = redshift_hook.get_conn().describe_clusters(ClusterIdentifier=cluster_id)["Clusters"][0]
conn = Connection(
conn_id=conn_id_name,
conn_type="redshift",
host=cluster_endpoint["Endpoint"]["Address"],
login=DB_LOGIN,
password=DB_PASS,
port=cluster_endpoint["Endpoint"]["Port"],
schema=cluster_endpoint["DBName"],
)
session = settings.Session()
session.add(conn)
session.commit()
@task
[docs]def setup_security_group(sec_group_name: str, ip_permissions: list[dict], vpc_id: str):
client = boto3.client("ec2")
security_group = client.create_security_group(
Description="Redshift-system-test", GroupName=sec_group_name, VpcId=vpc_id
)
client.get_waiter("security_group_exists").wait(
GroupIds=[security_group["GroupId"]],
GroupNames=[sec_group_name],
WaiterConfig={"Delay": 15, "MaxAttempts": 4},
)
client.authorize_security_group_ingress(
GroupId=security_group["GroupId"], GroupName=sec_group_name, IpPermissions=ip_permissions
)
return security_group["GroupId"]
@task(trigger_rule=TriggerRule.ALL_DONE)
[docs]def delete_security_group(sec_group_id: str, sec_group_name: str):
boto3.client("ec2").delete_security_group(GroupId=sec_group_id, GroupName=sec_group_name)
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]
redshift_cluster_identifier = f"{env_id}-redshift-cluster"
redshift_cluster_snapshot_identifier = f"{env_id}-snapshot"
conn_id_name = f"{env_id}-conn-id"
sg_name = f"{env_id}-sg"
get_vpc_id = get_default_vpc_id()
set_up_sg = setup_security_group(sg_name, [IP_PERMISSION], get_vpc_id)
# [START howto_operator_redshift_cluster]
create_cluster = RedshiftCreateClusterOperator(
task_id="create_cluster",
cluster_identifier=redshift_cluster_identifier,
vpc_security_group_ids=[set_up_sg],
publicly_accessible=True,
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=15,
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=15,
timeout=60 * 30,
)
set_up_connection = create_connection(conn_id_name, cluster_id=redshift_cluster_identifier)
# [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,
)
drop_table = SQLExecuteQueryOperator(
task_id="drop_table",
conn_id=conn_id_name,
sql="DROP TABLE IF EXISTS fruit",
trigger_rule=TriggerRule.ALL_DONE,
)
# [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]
delete_sg = delete_security_group(
sec_group_id=set_up_sg,
sec_group_name=sg_name,
)
chain(
# TEST SETUP
test_context,
set_up_sg,
# 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,
set_up_connection,
create_table_redshift_data,
insert_data,
drop_table,
delete_cluster_snapshot,
delete_cluster,
# TEST TEARDOWN
delete_sg,
)
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)
