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March 13, 2022 18:44
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# | |
# Licensed to the Apache Software Foundation (ASF) under one | |
# or more contributor license agreements. See the NOTICE file | |
# 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 | |
# | |
# 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. | |
"""Example DAG demonstrating the usage of the BashOperator.""" | |
from datetime import datetime, timedelta | |
from airflow import DAG | |
from airflow.operators.bash import BashOperator | |
from airflow.operators.dummy import DummyOperator | |
with DAG( | |
dag_id='dummu_dag', | |
schedule_interval='0 0 * * *', | |
start_date=datetime(2021, 1, 1), | |
catchup=False, | |
dagrun_timeout=timedelta(minutes=60), | |
tags=['example', 'example2', 'perso'], | |
params={"example_key": "example_value"}, | |
) as dag: | |
run_this_last = DummyOperator( | |
task_id='run_this_last', | |
) | |
# [START howto_operator_bash] | |
run_this = BashOperator( | |
task_id='run_after_loop', | |
bash_command='echo 1', | |
) | |
# [END howto_operator_bash] | |
run_this >> run_this_last | |
for i in range(3): | |
task = BashOperator( | |
task_id='runme_' + str(i), | |
bash_command='echo "{{ task_instance_key_str }}" && sleep 1', | |
) | |
task >> run_this | |
# [START howto_operator_bash_template] | |
also_run_this = BashOperator( | |
task_id='also_run_this', | |
bash_command='echo "run_id={{ run_id }} | dag_run={{ dag_run }}"', | |
) | |
# [END howto_operator_bash_template] | |
also_run_this >> run_this_last | |
# [START howto_operator_bash_skip] | |
this_will_skip = BashOperator( | |
task_id='this_will_skip', | |
bash_command='echo "hello world"; exit 99;', | |
dag=dag, | |
) | |
# [END howto_operator_bash_skip] | |
this_will_skip >> run_this_last | |
if __name__ == "__main__": | |
dag.cli() |
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