Source code for airflow.example_dags.subdags.subdag

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"""Helper function to generate a DAG and operators given some arguments."""
from __future__ import annotations

# [START subdag]
import pendulum

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

[docs]def subdag(parent_dag_name, child_dag_name, args): """ Generate a DAG to be used as a subdag. :param str parent_dag_name: Id of the parent DAG :param str child_dag_name: Id of the child DAG :param dict args: Default arguments to provide to the subdag :return: DAG to use as a subdag :rtype: airflow.models.DAG """ dag_subdag = DAG( dag_id=f'{parent_dag_name}.{child_dag_name}', default_args=args, start_date=pendulum.datetime(2021, 1, 1, tz="UTC"), catchup=False, schedule="@daily", ) for i in range(5): EmptyOperator( task_id=f'{child_dag_name}-task-{i + 1}', default_args=args, dag=dag_subdag, ) return dag_subdag
# [END subdag]

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