Execute a callback upon task end?

Question

Celery. An app sends a task to be executed.

r = task.delay()

Is it possible to execute code in the app address space upon task end other than by polling r?

This may be possible in Celery 5 as they are going to work on improvements in async handling... — DejanLekic, Sep 23 '19 at 12:15
Look for Celery 5 tags on GitHub as well as celery-5 tagged issues. — DejanLekic, Sep 23 '19 at 16:59

score 1 · Accepted Answer · answered Sep 22 '19 at 20:00

There is no built-in way in celery. Generally speaking, you will have to come up with your own way for the task to send a notification back to your app if you want to perform the callback processing in the calling application's address space.

Here are some patterns you can use:

Execute a callback upon task end?

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