如何在单个 Airflow DAG 中安排多个时间

Question

I understand that Airflow DAG runs has presets like @hourly, @daily, etc. However, I have interesting use case that I would like to perform multiple tasks in a single DAG with different schedules .

For example,

• Task 1 - Every first of the month
• Task 2 - Every second of the month at 12pm

.. And so on. Is this possible? These are very simple tasks (such as an API call) with no need to process results so I would like to avoid creating multiple DAGs for each of these tasks.

Answer 1

You could solve this by using a PythonOperator and the croniter package.

The DAG could run ie @daily and then the PythonOperator calls a functions that checks first if a certain task-specific cron expression matches the execution_date and then executes the code.