def get_preflight(self, task_id=dn.ALL_PREFLIGHT_CHECKS_DAG_NAME):
"""Generate the preflight step
Preflight checks preconditions for running a DAG
"""
return SubDagOperator(subdag=all_preflight_checks(
self.parent_dag_name, task_id, args=self.default_args),
task_id=task_id,
on_failure_callback=step_failure_handler,
dag=self.dag)
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 = DeckhandOperator(
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),