Cannot start repeated background task

[godardt]

Hello, I'm trying to use this lib to pull some data from an API endpoint every 5 sec and insert this data in my db. So far I'm using a toy function with a logger just to see if it works, but I tried a lot of things and my background task never triggers...

I'm using Django 3.0.2, DjangoRestFramework 3.11.0 and version 1.2.5 of this lib. So far I have: api.tasks.py:

from background_task import background
from logging import getLogger

logger = getLogger(__name__)


@background
def demo_task(message):
    print("Print without logger")
    logger.debug('demo_task. message={0}'.format(message))

api.apps.ApiConfig

from django.apps import AppConfig


class ApiConfig(AppConfig):
    name = 'api'

    def ready(self):
        from api import tasks

        tasks.demo_task("hello", repeat=5)

But the content of my demo_task is never reached although my debugger stops on the tasks.demo_task("hello", repeat=5) line. I did import properly django_tasks, I added it properly to the settings and I tried a lot of different things, even trying to trigger the task from an API calls, but in fact, the background task is never triggered. Thanks for your help!

[FlamingBiFi]

Hi had a similar issue, do you have started "python manage.py process_tasks" as a process in your terminal?

I thought it would work without this statement always running, but i guess this i wrong. It have to run as process.

[michaelwiles]

Yes, I noticed the requirement to run process_tasks from the terminal... makes no sense to me why there is a different process for running tasks - and of course, why it runs in a different process.

Is that just because of pythons lack of multi threading?

It does mean that I am unable to change any meaningful state on the django server (apart from state stored in the db of course).