117 lines
3.9 KiB
Python
117 lines
3.9 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from datetime import timedelta
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import airflow
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from airflow import DAG
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import failure_handlers
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from preflight_checks import all_preflight_checks
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from drydock_deploy_site import deploy_site_drydock
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from validate_site_design import validate_site_design
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from airflow.operators.subdag_operator import SubDagOperator
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from airflow.operators import ConcurrencyCheckOperator
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from airflow.operators import DeckhandOperator
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from airflow.operators import PlaceholderOperator
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from airflow.operators.python_operator import PythonOperator
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"""
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deploy_site is the top-level orchestration DAG for deploying a site using the
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Undercloud platform.
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"""
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PARENT_DAG_NAME = 'deploy_site'
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DAG_CONCURRENCY_CHECK_DAG_NAME = 'dag_concurrency_check'
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ALL_PREFLIGHT_CHECKS_DAG_NAME = 'preflight'
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DECKHAND_GET_DESIGN_VERSION = 'deckhand_get_design_version'
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VALIDATE_SITE_DESIGN_DAG_NAME = 'validate_site_design'
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DRYDOCK_BUILD_DAG_NAME = 'drydock_build'
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default_args = {
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'owner': 'airflow',
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'depends_on_past': False,
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'start_date': airflow.utils.dates.days_ago(1),
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'email': [''],
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'email_on_failure': False,
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'email_on_retry': False,
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'provide_context': True,
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'retries': 0,
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'retry_delay': timedelta(minutes=1),
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}
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dag = DAG(PARENT_DAG_NAME, default_args=default_args, schedule_interval=None)
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"""
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Define push function to store the content of 'action' that is
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defined via 'dag_run' in XCOM so that it can be used by the
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Operators
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"""
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def xcom_push(**kwargs):
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# Pushes action XCom
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kwargs['ti'].xcom_push(key='action',
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value=kwargs['dag_run'].conf['action'])
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action_xcom = PythonOperator(
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task_id='action_xcom', dag=dag, python_callable=xcom_push)
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concurrency_check = ConcurrencyCheckOperator(
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task_id=DAG_CONCURRENCY_CHECK_DAG_NAME,
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on_failure_callback=failure_handlers.step_failure_handler,
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dag=dag)
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preflight = SubDagOperator(
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subdag=all_preflight_checks(
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PARENT_DAG_NAME, ALL_PREFLIGHT_CHECKS_DAG_NAME, args=default_args),
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task_id=ALL_PREFLIGHT_CHECKS_DAG_NAME,
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on_failure_callback=failure_handlers.step_failure_handler,
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dag=dag)
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get_design_version = DeckhandOperator(
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task_id=DECKHAND_GET_DESIGN_VERSION,
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on_failure_callback=failure_handlers.step_failure_handler,
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dag=dag)
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validate_site_design = SubDagOperator(
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subdag=validate_site_design(
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PARENT_DAG_NAME, VALIDATE_SITE_DESIGN_DAG_NAME, args=default_args),
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task_id=VALIDATE_SITE_DESIGN_DAG_NAME,
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on_failure_callback=failure_handlers.step_failure_handler,
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dag=dag)
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drydock_build = SubDagOperator(
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subdag=deploy_site_drydock(
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PARENT_DAG_NAME, DRYDOCK_BUILD_DAG_NAME, args=default_args),
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task_id=DRYDOCK_BUILD_DAG_NAME,
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on_failure_callback=failure_handlers.step_failure_handler,
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dag=dag)
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query_node_status = PlaceholderOperator(
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task_id='deployed_node_status',
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on_failure_callback=failure_handlers.step_failure_handler,
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dag=dag)
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armada_build = PlaceholderOperator(
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task_id='armada_build',
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on_failure_callback=failure_handlers.step_failure_handler,
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dag=dag)
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# DAG Wiring
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concurrency_check.set_upstream(action_xcom)
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preflight.set_upstream(concurrency_check)
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get_design_version.set_upstream(preflight)
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validate_site_design.set_upstream(get_design_version)
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drydock_build.set_upstream(validate_site_design)
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query_node_status.set_upstream(drydock_build)
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armada_build.set_upstream(query_node_status)
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