Airflow for instance have

Question

Airflow for instance have <https airflow apache org docs apache airflow stable concepts sensors html|Sensors> Sensors wait for something external to happen

Kevin Kho · Answer

We don t have sensors but you could put the polling logic inside a task or a flow Or you can make the event trigger the flow like i mentioned above

Gustavo Frederico · Answer

I suppose that is not as good as exposing blocking tasks as REST endpoints I ll need to find another product I see that Google Workflows have callbacks <https cloud google com workflows docs creating callback endpoints> It s unfortunate that Prefect doesn t have this

Anna Geller · Answer

< Gustavo Frederico> we have a detailed walkthrough about how you can approach it

Anna Geller · Answer

Prefect provides several methods of approaching that problem even if we don t call it sensors Happy to answer your questions about this orchestration pattern what s the use case you tried to solve with sensors Are you waiting for some files to arrive