Source code for airflow.example_dags.example_dynamic_task_mapping
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"""Example DAG demonstrating the usage of dynamic task mapping."""
from __future__ import annotations
from datetime import datetime
from airflow.sdk import DAG, task
with DAG(dag_id="example_dynamic_task_mapping", schedule=None, start_date=datetime(2022, 3, 4)) as dag:
@task
[docs]
def add_one(x: int):
return x + 1
@task
def sum_it(values):
total = sum(values)
print(f"Total was {total}")
added_values = add_one.expand(x=[1, 2, 3])
sum_it(added_values)
with DAG(
dag_id="example_task_mapping_second_order", schedule=None, catchup=False, start_date=datetime(2022, 3, 4)
) as dag2:
@task
[docs]
def get_nums():
return [1, 2, 3]
@task
def times_2(num):
return num * 2
@task
def add_10(num):
return num + 10
_get_nums = get_nums()
_times_2 = times_2.expand(num=_get_nums)
add_10.expand(num=_times_2)