Source code for airflow.example_dags.example_bash_operator

#
# 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 __future__ import annotations

import datetime

import pendulum

from airflow.models.dag import DAG
from airflow.operators.bash import BashOperator
from airflow.operators.empty import EmptyOperator

with DAG(
    dag_id="example_bash_operator",
    schedule="0 0 * * *",
    start_date=pendulum.datetime(2021, 1, 1, tz="UTC"),
    catchup=False,
    dagrun_timeout=datetime.timedelta(minutes=60),
    tags=["example", "example2"],
    params={"example_key": "example_value"},
) as dag:
[docs] run_this_last = EmptyOperator( 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=f"runme_{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 "ti_key={{ task_instance_key_str }}"', ) # [END howto_operator_bash_template] also_run_this >> run_this_last # [START howto_operator_bash_skip]
[docs]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.test()

Was this entry helpful?