tests/dags/test_miscellaneous.py

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

from __future__ import annotations

import datetime

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

args = {
    "owner": "airflow",
}

dag = DAG(
    dag_id="miscellaneous_test_dag",
    default_args=args,
    schedule="0 0 * * *",
    start_date=datetime.datetime(2022, 1, 1),
    dagrun_timeout=datetime.timedelta(minutes=60),
    tags=["example", "example2"],
    params={"example_key": "example_value"},
)

run_this_last = EmptyOperator(
    task_id="run_this_last",
    dag=dag,
)

# [START howto_operator_bash]
run_this = BashOperator(
    task_id="run_after_loop",
    bash_command="echo 1",
    dag=dag,
)
# [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',
        dag=dag,
    )
    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 }}"',
    dag=dag,
)
# [END howto_operator_bash_template]
also_run_this >> run_this_last

if __name__ == "__main__":
    dag.cli()