Source code for airflow.example_dags.example_setup_teardown

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"""Example DAG demonstrating the usage of setup and teardown tasks."""

from __future__ import annotations

import pendulum

from airflow.models.dag import DAG
from airflow.providers.standard.operators.bash import BashOperator
from airflow.utils.task_group import TaskGroup

with DAG(
    dag_id="example_setup_teardown",
    schedule=None,
    start_date=pendulum.datetime(2021, 1, 1, tz="UTC"),
    catchup=False,
    tags=["example"],
) as dag:
[docs] root_setup = BashOperator(task_id="root_setup", bash_command="echo 'Hello from root_setup'").as_setup()
root_normal = BashOperator(task_id="normal", bash_command="echo 'I am just a normal task'") root_teardown = BashOperator( task_id="root_teardown", bash_command="echo 'Goodbye from root_teardown'" ).as_teardown(setups=root_setup) root_setup >> root_normal >> root_teardown with TaskGroup("section_1") as section_1: inner_setup = BashOperator( task_id="taskgroup_setup", bash_command="echo 'Hello from taskgroup_setup'" ).as_setup() inner_normal = BashOperator(task_id="normal", bash_command="echo 'I am just a normal task'") inner_teardown = BashOperator( task_id="taskgroup_teardown", bash_command="echo 'Hello from taskgroup_teardown'" ).as_teardown(setups=inner_setup) inner_setup >> inner_normal >> inner_teardown root_normal >> section_1

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