[GitHub] [airflow] turbaszek commented on issue #12577: Use only single execution date in ExternalTaskSensor

[GitBox <gi...@apache.org>]

turbaszek commented on issue #12577:
URL: https://github.com/apache/airflow/issues/12577#issuecomment-739335720


   @ManiBharataraju I would say that you can do `python_operator >> external_sensor` and pass to the sensor whatever execution date you want. In my opinion this serves 100% of cases. And with TaskFlow API this is dead simple:
   
   ```py
   @task 
   def my_custom_exec_date() -> datetime:
       ctx = get_current_context()
       # here do what you want
       return exec_date
   
   with DAG(...) as dag:
       exec_date = my_custom_exec_date()
       sensor = ExternalTaskSensor(task_id="sensor", execution_date=exec_date)
   ```
   
   If you don't know TaskFlow API:
   - http://apache-airflow-docs.s3-website.eu-central-1.amazonaws.com/docs/apache-airflow/latest/tutorial_taskflow_api.html
   - https://www.polidea.com/blog/airflow-2-0-dag-authoring-redesigned/


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