75 строки
2.0 KiB
Python
75 строки
2.0 KiB
Python
#
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. 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,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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"""Example DAG demonstrating the usage of the BashOperator."""
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from datetime import timedelta
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from airflow import DAG
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from airflow.operators.bash import BashOperator
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from airflow.operators.dummy_operator import DummyOperator
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from airflow.utils.dates import days_ago
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args = {
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'owner': 'airflow',
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'start_date': days_ago(2),
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}
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dag = DAG(
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dag_id='example_bash_operator',
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default_args=args,
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schedule_interval='0 0 * * *',
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dagrun_timeout=timedelta(minutes=60),
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tags=['example']
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)
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run_this_last = DummyOperator(
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task_id='run_this_last',
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dag=dag,
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)
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# [START howto_operator_bash]
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run_this = BashOperator(
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task_id='run_after_loop',
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bash_command='echo 1',
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dag=dag,
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)
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# [END howto_operator_bash]
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run_this >> run_this_last
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for i in range(3):
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task = BashOperator(
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task_id='runme_' + str(i),
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bash_command='echo "{{ task_instance_key_str }}" && sleep 1',
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dag=dag,
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)
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task >> run_this
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# [START howto_operator_bash_template]
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also_run_this = BashOperator(
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task_id='also_run_this',
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bash_command='echo "run_id={{ run_id }} | dag_run={{ dag_run }}"',
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dag=dag,
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)
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# [END howto_operator_bash_template]
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also_run_this >> run_this_last
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if __name__ == "__main__":
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dag.cli()
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