shipyard/shipyard_airflow/dags/deploy_site.py
Anthony Lin cee6f21547 Add Pre-Flight Check to deploy_site Dag
The Armada Health Check endpoint is ready for Airflow/Shipyard
to consume

This P.S adds the 'Pre-Flight Check' step back to the 'deploy_site'
dag as part of the required workflow

Note that we will include Promenade Health Check when the API is
ready

Change-Id: Ic3df76e1b6eac7fa4804f6a57eff374005a94073
2017-12-14 03:57:32 +00:00

124 lines
4.5 KiB
Python

# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
#
# Licensed 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 datetime import timedelta
import airflow
import failure_handlers
from airflow import DAG
from airflow.operators import ConcurrencyCheckOperator
from airflow.operators.python_operator import PythonOperator
from airflow.operators.subdag_operator import SubDagOperator
from armada_deploy_site import deploy_site_armada
from deckhand_get_design import get_design_deckhand
from drydock_deploy_site import deploy_site_drydock
from preflight_checks import all_preflight_checks
from validate_site_design import validate_site_design
"""
NOTE: We are currently in the process of reviewing and merging patch sets
from various UCP components that are needed for the 'deploy_site' dag to
work properly. In order to proceed with integration testing with the CI/CD
team, there is a need to rename the 'deploy_site.py' dag as 'deploy_site.wip'
while we sort out, review and merge the outstanding patch sets.
NOTE: We will only include Concurrency_Check, Armada and DryDock workflow here
for our current testing. Updates will be made to this test dag as we progress
along with the integration testing and UCP code reviews/merge.
"""
ALL_PREFLIGHT_CHECKS_DAG_NAME = 'preflight'
ARMADA_BUILD_DAG_NAME = 'armada_build'
DAG_CONCURRENCY_CHECK_DAG_NAME = 'dag_concurrency_check'
DECKHAND_GET_DESIGN_VERSION = 'deckhand_get_design_version'
DRYDOCK_BUILD_DAG_NAME = 'drydock_build'
PARENT_DAG_NAME = 'deploy_site'
VALIDATE_SITE_DESIGN_DAG_NAME = 'validate_site_design'
default_args = {
'owner': 'airflow',
'depends_on_past': False,
'start_date': airflow.utils.dates.days_ago(1),
'email': [''],
'email_on_failure': False,
'email_on_retry': False,
'provide_context': True,
'retries': 0,
'retry_delay': timedelta(seconds=30),
}
dag = DAG(PARENT_DAG_NAME, default_args=default_args, schedule_interval=None)
"""
Define push function to store the content of 'action' that is
defined via 'dag_run' in XCOM so that it can be used by the
Operators
"""
def xcom_push(**kwargs):
# Pushes action XCom
kwargs['ti'].xcom_push(key='action',
value=kwargs['dag_run'].conf['action'])
action_xcom = PythonOperator(
task_id='action_xcom', dag=dag, python_callable=xcom_push)
concurrency_check = ConcurrencyCheckOperator(
task_id=DAG_CONCURRENCY_CHECK_DAG_NAME,
on_failure_callback=failure_handlers.step_failure_handler,
dag=dag)
preflight = SubDagOperator(
subdag=all_preflight_checks(
PARENT_DAG_NAME, ALL_PREFLIGHT_CHECKS_DAG_NAME, args=default_args),
task_id=ALL_PREFLIGHT_CHECKS_DAG_NAME,
on_failure_callback=failure_handlers.step_failure_handler,
dag=dag)
get_design_version = SubDagOperator(
subdag=get_design_deckhand(
PARENT_DAG_NAME, DECKHAND_GET_DESIGN_VERSION, args=default_args),
task_id=DECKHAND_GET_DESIGN_VERSION,
on_failure_callback=failure_handlers.step_failure_handler,
dag=dag)
validate_site_design = SubDagOperator(
subdag=validate_site_design(
PARENT_DAG_NAME, VALIDATE_SITE_DESIGN_DAG_NAME, args=default_args),
task_id=VALIDATE_SITE_DESIGN_DAG_NAME,
on_failure_callback=failure_handlers.step_failure_handler,
dag=dag)
drydock_build = SubDagOperator(
subdag=deploy_site_drydock(
PARENT_DAG_NAME, DRYDOCK_BUILD_DAG_NAME, args=default_args),
task_id=DRYDOCK_BUILD_DAG_NAME,
on_failure_callback=failure_handlers.step_failure_handler,
dag=dag)
armada_build = SubDagOperator(
subdag=deploy_site_armada(
PARENT_DAG_NAME, ARMADA_BUILD_DAG_NAME, args=default_args),
task_id=ARMADA_BUILD_DAG_NAME,
on_failure_callback=failure_handlers.step_failure_handler,
dag=dag)
# DAG Wiring
concurrency_check.set_upstream(action_xcom)
preflight.set_upstream(concurrency_check)
get_design_version.set_upstream(preflight)
validate_site_design.set_upstream(get_design_version)
drydock_build.set_upstream(validate_site_design)
armada_build.set_upstream(drydock_build)