airflow example_subdag_operator 源码
airflow example_subdag_operator 代码
文件路径：/airflow/example_dags/example_subdag_operator.py
#
# Licensed to the Apache Software Foundation (ASF) under one
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# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# 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
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# KIND, either express or implied. See the License for the
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"""Example DAG demonstrating the usage of the SubDagOperator."""
from __future__ import annotations
# [START example_subdag_operator]
import datetime
from airflow import DAG
from airflow.example_dags.subdags.subdag import subdag
from airflow.operators.empty import EmptyOperator
from airflow.operators.subdag import SubDagOperator
DAG_NAME = 'example_subdag_operator'
with DAG(
dag_id=DAG_NAME,
default_args={"retries": 2},
start_date=datetime.datetime(2022, 1, 1),
schedule="@once",
tags=['example'],
) as dag:
start = EmptyOperator(
task_id='start',
)
section_1 = SubDagOperator(
task_id='section-1',
subdag=subdag(DAG_NAME, 'section-1', dag.default_args),
)
some_other_task = EmptyOperator(
task_id='some-other-task',
)
section_2 = SubDagOperator(
task_id='section-2',
subdag=subdag(DAG_NAME, 'section-2', dag.default_args),
)
end = EmptyOperator(
task_id='end',
)
start >> section_1 >> some_other_task >> section_2 >> end
# [END example_subdag_operator]
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