perf_dag_1.py

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"""
This dag tests performance of simple bash commands executed with Airflow.
"""

from __future__ import annotations

import datetime

from airflow.models.dag import DAG
from airflow.operators.bash_operator import BashOperator

args = {
    "owner": "airflow",
    "start_date": datetime.datetime(2022, 1, 1),
}

dag = DAG(
    dag_id="perf_dag_1",
    default_args=args,
    schedule="@daily",
    dagrun_timeout=datetime.timedelta(minutes=60),
)

task_1 = BashOperator(
    task_id="perf_task_1",
    bash_command='sleep 5; echo "run_id={{ run_id }} | dag_run={{ dag_run }}"',
    dag=dag,
)

for i in range(2, 5):
    task = BashOperator(
        task_id=f"perf_task_{i}",
        bash_command="""
            sleep 5; echo "run_id={{ run_id }} | dag_run={{ dag_run }}"
        """,
        dag=dag,
    )
    task.set_upstream(task_1)

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