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# 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
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# KIND, either express or implied. See the License for the
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from __future__ import annotations
from datetime import datetime
from airflow.providers.amazon.aws.operators.emr import (
EmrServerlessCreateApplicationOperator,
EmrServerlessDeleteApplicationOperator,
EmrServerlessGetSessionEndpointOperator,
EmrServerlessStartSessionOperator,
EmrServerlessStopApplicationOperator,
EmrServerlessStopSessionOperator,
)
from airflow.providers.common.compat.sdk import DAG, TriggerRule, chain
from system.amazon.aws.utils import SystemTestContextBuilder
DAG_ID = "example_emr_serverless_session"
# Externally fetched variables:
ROLE_ARN_KEY = "ROLE_ARN"
sys_test_context_task = SystemTestContextBuilder().add_variable(ROLE_ARN_KEY).build()
with DAG(
dag_id=DAG_ID,
schedule="@once",
start_date=datetime(2021, 1, 1),
catchup=False,
tags=["example", "emr-serverless"],
) as dag:
test_context = sys_test_context_task()
role_arn = test_context[ROLE_ARN_KEY]
create_app = EmrServerlessCreateApplicationOperator(
task_id="create_app",
release_label="emr-7.13.0",
job_type="SPARK",
config={
"name": "session-systest",
# Interactive sessions (required for the StartSession API) are only available
# on emr-7.13.0+ and must be explicitly enabled on the application.
"interactiveConfiguration": {"sessionEnabled": True},
},
)
application_id = create_app.output
# [START howto_operator_emr_serverless_start_session]
start_session = EmrServerlessStartSessionOperator(
task_id="start_session",
application_id=application_id,
execution_role_arn=role_arn,
idle_timeout_minutes=5,
)
# [END howto_operator_emr_serverless_start_session]
session_id = "{{ ti.xcom_pull(task_ids='start_session')['session_id'] }}"
# [START howto_operator_emr_serverless_get_session_endpoint]
get_endpoint = EmrServerlessGetSessionEndpointOperator(
task_id="get_endpoint",
application_id=application_id,
session_id=session_id,
)
# [END howto_operator_emr_serverless_get_session_endpoint]
# [START howto_operator_emr_serverless_stop_session]
stop_session = EmrServerlessStopSessionOperator(
task_id="stop_session",
application_id=application_id,
session_id=session_id,
)
# [END howto_operator_emr_serverless_stop_session]
stop_app = EmrServerlessStopApplicationOperator(
task_id="stop_app",
application_id=application_id,
force_stop=True,
trigger_rule=TriggerRule.ALL_DONE,
)
delete_app = EmrServerlessDeleteApplicationOperator(
task_id="delete_app",
application_id=application_id,
trigger_rule=TriggerRule.ALL_DONE,
)
chain(
# TEST SETUP
test_context,
create_app,
# TEST BODY
start_session,
get_endpoint,
stop_session,
# TEST TEARDOWN
stop_app,
delete_app,
)
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)