Source code for airflow.example_dags.example_bash_operator

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"""Example DAG demonstrating the usage of the BashOperator."""

import datetime

import pendulum

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

with DAG(
    dag_id='example_bash_operator',
    schedule_interval='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='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]
[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.cli()

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