django-celery-beat | Celery Periodic Tasks backed by the Django ORM | Reactive Programming library
kandi X-RAY | django-celery-beat Summary
kandi X-RAY | django-celery-beat Summary
Celery Periodic Tasks backed by the Django ORM
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Top functions reviewed by kandi - BETA
- Schedules of the database
- Check if the database has changed
- Synchronize the database
- Return a dictionary with all registered models
- Return the last update
- Check if due is due to a given time
- Return current time
- Override save method
- Raises ValidationError if this task is not set
- Validate that the expiry is set
- Determine if we are due to a given time
- Create a schedule for this event
- Convert datetimes to timezone aware
- Schedules the event loop
- Toggle tasks activity
- Send a message to the user
- Modify the queryset activity
- Returns a list of choices
- List of tasks as a tuple
- Enable scheduled tasks
django-celery-beat Key Features
django-celery-beat Examples and Code Snippets
Lines of Code : 0License : Non-SPDX (NOASSERTION)
Copyimport ssl
broker_use_ssl = {
'keyfile': '/var/ssl/private/worker-key.pem',
'certfile': '/var/ssl/amqp-server-cert.pem',
'ca_certs': '/var/ssl/myca.pem',
'cert_reqs': ssl.CERT_REQUIRED
}
Starting from Celery 5.1, py-amqp will always validate *'schedule': crontab(minute=1),*
'schedule': crontab(minute='*/1'),
celery -A project worker --pool=solo -l INFO
celery -A project beat -S django
LOOP = None
def run_loop():
global LOOP
LOOP = asyncio.new_event_loop()
LOOP.run_until_complete(long_running_task())
threading.Thread(target=run_loop).start()
#
LOOP.call_soon_threadsafe(LOOP.stop)
error: Can not find Rust compiler
FROM python:3.7-alpine
ENV PYTHONUNBUFFERED 1
RUN apk add --update \
build-base \
cairo \
cairo-dev \
cargo \
freetype-dev \
gcc \
gdk-pixbuf-dev \
gettext \
jpENV CRYPTOGRAPHY_DONT_BUILD_RUST=1
celery -A baseapp worker --beat --scheduler django --loglevel=info
celery -A capital worker -l info
RUN pip install virtualenv && virtualenv -p python /app/venv
RUN /app/venv/bin/pip install -r req.txt
RUN /app/venv/bin/python /app/code/manage.py makemigrations
PermissionError: [Errno 13] Permission denied: '/usr/local/lib/python3.7/site-packages/django/contrib/admin/migrations/0004_auto_20190515_1649.py'
docker-compose run web_app sh -c "python manage.py makemigrations cCommunity Discussions
Trending Discussions on django-celery-beat
QUESTION
celery --version 5.1.2 (sun-harmonics)
django --version 3.2.8
I have a celery schedule that has four tasks that run in different timezones. I am using nowfun for setting the timezones and have set CELERY_ENABLE_UTC = False in settings.py. I followed the top response on this SO post: Celery beat - different time zone per task
Note that I made this change this morning - I was running a previous version of the code without these settings.
Currently, I am saving the celery results to CELERY_RESULT_BACKEND = 'django-db'.
Since implementing the change that allows for different tasks to be run according to different timezones I am getting an error when I run celery -A backend beat -l info.
It's super long though here is the head and tail: Head:
[2021-10-29 07:29:36,059: INFO/MainProcess] beat: Starting... [2021-10-29 07:29:36,067: ERROR/MainProcess] Cannot add entry 'celery.backend_cleanup' to database schedule: ValidationError(["Invalid timezone ''"]). Contents: {'task': 'celery.backend_cleanup', 'schedule':
- (m/h/d/dM/MY)>, 'options': {'expire_seconds': 43200}}
Tail:
django.core.exceptions.ValidationError: ["Invalid timezone ''"]
Celery beat hangs on this last error message and I have to kill it with ctrl + c.
I went onto celery and read their instructions about manually resetting the database when timezone-related settings change - the website says:
$ python manage.py shell
from django_celery_beat.models import
PeriodicTask PeriodicTask.objects.update(last_run_at=None)
I then found some documentation that said:
Warning: If you change the Django TIME_ZONE setting your periodic task schedule will still be based on the old timezone. To fix that you would have to reset the “last run time” for each periodic task:
from django_celery_beat.models import PeriodicTask, PeriodicTasks
PeriodicTask.objects.all().update(last_run_at=None)
PeriodicTasks.changed()
Note that this will reset the state as if the periodic tasks have never run before.
So I think what's causing the problem is exactly what it says above - I changed timezones and the schedule is still running on the old UTC timezone so I need to update it, though my schedules have run before and so when I type:
...ANSWER
Answered 2021-Oct-29 at 12:59Sometimes when trying to solve a problem we are actually solving a problem created by an incorrect way of solving the initial problem.
If the answer was, "This is how you update PeriodicTask, PeriodicTasks of previously run tasks when changing timezone" then what was the original question?
The original question here was the changing of the timezone for different tasks so that those tasks incorporated DST for the various timezones. Following the solution on Celery beat - different time zone per task was not the most efficient approach to solving this problem.
To avoid needing to update the PeriodicTask and PeriodicTasks don't change CELERY_ENABLE_UTC = False and rather run everything in UTC as per the answer to this post: Celery scheduled tasks problems with Timezone
This solves the original problem.
Here is my updated celery.py and a working solution:
QUESTION
I am a beginner in django.
I want to keep running long processes in django in the background.
And I want to keep it running unless I explicitly end that process.
I can't figure out where and how to add the following code to django.
...ANSWER
Answered 2021-Jun-02 at 20:16AsyncIO event loops are not thread safe; you can't run the loop from a different thread than it was originally created on. Your run_loop function should instead take no arguments, and create/start a new event loop to run your coroutine:
QUESTION
We have been working with celery and django-celery till now but recently we planned to migrate our codebase to Django==2.2 and looks like django-celery doesn't have support for Django==2.2 yet.
With django-celery we could configure periodic tasks from django admin. Is it safe to assume that if I want the similar functionality then apart from Celery package and running celerybeat instance I would have to install django-celery-beat package instead of django-celery - without doing massive code changes?
ANSWER
Answered 2020-Dec-24 at 11:02django-celery can be removed. I used it but celery can work fine without it.
Just see https://docs.celeryproject.org/en/stable/django/first-steps-with-django.html
Your tasks remains the same.
I used periodic tasks with the following packages installed:
QUESTION
Is it possible for django-celery-beat not to save tasks that are performed in a short time interval? By default, all results are saved to the Task Results table.
I cannot find this information on celeryproject webpage.
Alternatively, what should be the settings for postgres auto vacuum so that indexes don't take up that much disk space?
I want a simple solution. Overwriting django celery logic is not an option.
...ANSWER
Answered 2020-Nov-13 at 17:00Is rpc backend and task_ignore_result answer your needs :
QUESTION
Tried to schedule a function print_hello() in Django. But code seems not working.
Here is the Django project layout. Only celery related files are given.
...ANSWER
Answered 2020-Sep-26 at 20:25Are you running RabbitMQ? - Celery broker (You can also choose to use Redis, a commonly used celery broker). The default port of RabbitMQ is 5672.
For reference have a look at this
You can also find usage of @shared_task in the above repository mentioned.
QUESTION
I am running Django, Celery, and RabbitMQ in a Docker container.
It's all configured well and running, however when I am trying to install django-celery-beat I have a problem initialising the service.
Specifically, this command:
...ANSWER
Answered 2020-Apr-18 at 14:37celerybeat (celery.bin.beat) creates a pid file where it stores process id
QUESTION
I use Django and Celery to schedule a task but I have an issue with the logger because it doesn't propagate properly. As you can see in the code below I have configured the Python logging module and the get_task_logger Celery module.
ANSWER
Answered 2020-Apr-02 at 23:06Did you start a worker node as well? beat is just the scheduler, You have to run a worker as well
QUESTION
Suppose I have a model Event. I want to send a notification (email, push, whatever) to all invited users once the event has elapsed. Something along the lines of:
ANSWER
Answered 2020-Apr-01 at 11:03We're doing something like this in the company i work for, and the solution is quite simple.
Have a cron / celery beat that runs every hour to check if any notification needs to be sent. Then send those notifications and mark them as done. This way, even if your notification time is years ahead, it will still be sent. Using ETA is NOT the way to go for a very long wait time, your cache / amqp might loose the data.
You can reduce your interval depending on your needs, but do make sure they dont overlap.
If one hour is too huge of a time difference, then what you can do is, run a scheduler every hour. Logic would be something like
- run a task (lets call this scheduler task) hourly that gets all notifications that needs to be sent in the next hour (via celery beat) -
- Schedule those notifications via apply_async(eta) - this will be the actual sending
Using that methodology would get you both of best worlds (eta and beat)
QUESTION
I am working with the pypi django_celery_beats package in a project (https://pypi.org/project/django-celery-beat/) and I am in a situation where it would be beneficial to add fields to the PeriodicTask model, but I am struggling to think of how to extend the model where it will still work as expected since the package will not know to use my newly created CustomPeriodicTask(PeriodicTask) model.
So my question is, do I need to store the package locally and edit the source or can I override the fields in the model without having to go through all of that trouble?
...ANSWER
Answered 2020-Mar-23 at 14:51If the behavior of the core functionality will change based on your field changes, then you'll have to fork the repo and make your own updates.
QUESTION
I have a single django application hosted on AWS - Web client <=> nginx <=> uwsgi <=> django. I decided to transform It into a multi tenant with django-tenant. Also, I'm using django-celery-beat for scheduling tasks. My single application works normally on AWS and my multi tenant works locally too, in my machine. I had a problem recognizing the schemas with celery, but I solved It here: Is It possible to user django-celery-beat with django-tenant?. However, the error I'm getting now is within my VPN: django.db.utils.ProgrammingError: relation" app_modelcustomuser "does not exist
It appears when I try to run ./manage migrate_schemas (I do makemigration in my local machine and commit It, so I just need to migrate to the DB in my VPN) or any other migrate. I tried to migrate by application and I get It when I do ./manage migrate admin. My settings.py file looks like this:
ANSWER
Answered 2020-Feb-26 at 18:09My error was a beginner error. When I had deployed my single application, the database had not changed, I left db.sqlite3. When I switched to multi tenant, I had to switch to PostgreSQL. My problem was because I needed to run:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install django-celery-beat
You can use django-celery-beat like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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