I'm using Django 1.10 and Celery 4.
I found leaks in Celery's Documentation :(
The worker configuration is well done and It run fine (I can see the worker connected in RabbitMQ webmin). But my tasks can't connect to RabbitMQ to publish their messages.
settings.py
CELERY_BROKER_URL = 'amqp://dev:dev#localhost/dev_virtualhost'
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
celery.py
from __future__ import absolute_import
import os
from celery import Celery
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'settings')
app = Celery('dev_app')
app.config_from_object('django.conf:settings', namespace='CELERY')
app.autodiscover_tasks()
#app.task(bind=True)
def debug_task(self):
print('Request: {0!r}'.format(self.request))
tasks.py
from celery import shared_task
#shared_task(queue='data_to_write')
def test_task(data):
open('/tmp/test', 'w').write(data)
From Django's Shell I run this code and fail :(
test_task.delay('hello world')
AccessRefused: (0, 0): (403) ACCESS_REFUSED - Login was refused using authentication mechanism AMQPLAIN. For details see the broker logfile.
In the RabbitMQ logs I see that credentials are guest:guest, no dev:dev like I wrote in the settings.py.
Where is my error? Thanks
The solution consists in rename celery.py to celery_app.py to avoid auto import.
Then you must execute celery in this way:
celery --app=PACKAGE.celery_app:app worker
PACKAGE is the module (folder) where you put the celery_app.py
Related
I am trying to setup a task to run every ten seconds.Using Celery Beat.
I am using:
Django==1.11.3
celery==4.1.0
django-celery-beat==1.1.1
django-celery-results==1.0.1
It is giving me the following error:
Received unregistered task of type 'operations.tasks.message'
I am new to Celery, I have tried numerous solutions and cannot seem to find a solution,would appreciate the help
settings.py
CELERY_BROKER_URL = 'pyamqp://guest#localhost//'
CELERY_RESULT_BACKEND = 'django-db'
CELERY_ACCEPT_CONTENT = ['application/json']
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TASK_SERIALIZER = 'json'
CELERY_TIMEZONE = 'Africa/Johannesburg'
CELERY_BEAT_SCHEDULE = {
'message': {
'task': 'operations.tasks.message',
'schedule': 10.0
}
}
celery.py
from __future__ import absolute_import, unicode_literals
import os
from celery import Celery
# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'nodiso.settings')
app = Celery('nodiso')
# Using a string here means the worker don't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
# should have a `CELERY_` prefix.
app.config_from_object('django.conf:settings', namespace='CELERY')
# Load task modules from all registered Django app configs.
app.autodiscover_tasks()
#app.task(bind=True)
def debug_task(self):
print('Request: {0!r}'.format(self.request))
__init__.py
from __future__ import absolute_import, unicode_literals
# This will make sure the app is always imported when
# Django starts so that shared_task will use this app.
from .celery import app as celery_app
__all__ = ['celery_app']
task.py
from __future__ import absolute_import, unicode_literals
from celery import shared_task
from operations import models
from .celery import periodic_task
#task
def message():
t = models.Celerytest.objects.create(Message='Hello World')
t.save()
files structure
proj-
proj-
__init__.py
settings.py-
celery.py-
app-
tasks.py-
Within my celery.py file I define app like this:
app = Celery(
'your_celery_app_name',
include=[
'your_celery_app_name.module.task1',
'your_celery_app_name.module.task2',
]
)
app.config_from_object('your_celery_app_name.celeryconfig')
My celeryconfig.py is where I define my beats and other settings (I think this would be same as your settings.py).
Below is probably not relevant - I'm not an expert with Python and how package should be put together - but from my limited understanding your tasks should be a submodule of your celery app module. Take this with pinch of salt though.
My project structure looks more like this:
your_celery_app_name (dir)
setup.py (file)
your_celery_app_name (dir)
__init__.py (file)
celery.py (file)
celeryconfig.py (file)
module (dir)
__init__.py (importing task1 and task2 from tasks)
tasks.py (implementing task1 and task2)
I am trying to setup a dummy task in Celery that runs every 3 seconds but have had little success so far. This is the output I am getting:
I've set up celery as follows:
In settings.py:
from datetime import timedelta
BROKER_URL = 'redis://localhost:6379/0'
CELERY_RESULT_BACKEND = 'redis://localhost:6379'
CELERY_ACCEPT_CONTENT = ['application/json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TIMEZONE = 'UTC'
CELERY_IMPORTS = ("api.tasks")
CELERYBEAT_SCHEDULE = {
'add_job': {
'task': 'add_job',
'schedule': timedelta(seconds=3),
'args': (16, 16)
},
}
CELERY_TIMEZONE = 'UTC'
In celery.py:
from __future__ import absolute_import
import os
from celery import Celery
from django.conf import settings
# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'blogpodapi.settings')
app = Celery(
'blogpodapi',
)
# Using a string here means the worker will not have to
# pickle the object when using Windows.
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
#app.task(bind=True)
def debug_task(self):
print('Request: {0!r}'.format(self.request))
In tasks.py
from celery.task import task
#task(name='add_job')
def add_job(x, y):
r = x + y
print "task arguments: {x}, {y}".format(x=x, y=y)
print "task result: {r}".format(r=r)
return r
Have I done anything wrong in the way that I have set it up?
Only answering because this was the first result when I searched on CELERYBEAT_SCHEDULE.
Reason it didn't work for me, was because it should be CELERY_BEAT_SCHEDULE
Okay the very basic mistake I see is that most of the settings you've mentioned in your settings.py need to go in celery.py
Specially the CELERYBEAT_SCHEDULE
You are doing everything right, its just that your Celery is waiting for a task, which it is never receiving as it reads from celery.py and not from the settings.py. Hence nothing is happening.
See my celery.py and also the settings.py for a reference.
celery.py -> https://github.com/amyth/hammer/blob/master/config/celery.py
settings.py -> https://github.com/amyth/hammer/blob/master/config/settings.py
I have used crontab, coz I wanted to execute the task at a particular time of the day. So you don't need to worry about it. Yours is perfect for what you want to do.
Also from wherever whatever blog or tutorial you are following celery, check again what exactly are those settings required for and whether you need all all of them or not.
As to why your task does not run: it is not registered. If it was, the output of the Celery worker when it starts would be different - it would contain the following two lines (at least):
[tasks]
. add_job
My celery task runs well
But I found my djcelery_taskstate table has nothing :
How can it save data into it??
Here is my setting :
settings.py
BROKER_URL = 'redis://localhost:6379'
CELERYBEAT_SCHEDULER = 'djcelery.schedulers.DatabaseScheduler'
CELERY_RESULT_BACKEND = 'djcelery.backends.database:DatabaseBackend'
CELERY_TIMEZONE = 'Asia/Taipei'
celery.py
from __future__ import absolute_import
import os
from celery import Celery
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myproject.settings')
from django.conf import settings # noqa
app = Celery('myproject')
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
app.conf.update(
CELERY_RESULT_BACKEND='djcelery.backends.database:DatabaseBackend',
CELERY_TIMEZONE = 'Asia/Taipei'
)
tasks.py
from __future__ import absolute_import
from celery.task.schedules import crontab
from celery.decorators import periodic_task
from celery import task
from datetime import timedelta
from myapp.deal import check_data
#periodic_task(run_every=timedelta(seconds=30),name="collect-rawdata",ignore_result=True)
def rawdata():
return check_data()
Here is my command to run celery :
one terminal run:
celery -A wiarea worker -l info
another run:
celery -A wiarea beat -l info
You have set ignore_result to True. This makes Celery drop the result and not save it anywhere.
I am trying to create some asynchronous tasks with celery in my django application
settings.py
BROKER_URL = 'django://localhost:6379/0'
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
celery.py:
from __future__ import absolute_import
import os
from celery import Celery
from django.conf import settings
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'provcon.settings')
app = Celery('provcon')
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
project __init__py:
from __future__ import absolute_import
from .celery import app as celery_app
tasks.py:
from __future__ import absolute_import
from celery import shared_task
from celery import task
from .models import Proc_Carga
#task()
def carga_ftp():
tabla = Proc_Carga()
sp = tabla.carga()
return None
I call the asysnchronous tasks from my view like this:
from .tasks import carga_ftp
#login_required(login_url='/login/')
def archivoview(request):
usuario= request.user
if request.method == 'POST':
form = ProcFTPForm(usuario,request.POST)
if form.is_valid():
form.save()
proc = Lista_Final()
lista = proc.archivos()
# call asynchronous task
carga_ftp.delay()
return HttpResponseRedirect('/resumen/')
else:
form = ProcFTPForm(usuario)
return render_to_response('archivo.html',{'form':form},context_instance=RequestContext(request))
When I run the task from the python manage.py shell. The worker is executed and create the database objects without any problem
but when I try to execute the task from the view, doesn't work is not executed
Any idea why the task run from the manage.py shell but not from the views
Thanks in advance
Same problem with me.
Task is working in python shell but it is not working in Django views.
I followed this
http://docs.celeryproject.org/en/latest/django/first-steps-with-django.html
I was missing namespace in app.config_from_object, after adding namespace='CELERY', It is working fine.
app.config_from_object('django.conf:settings', namespace='CELERY')
Check if redis is running
$redis-cli ping
Check if the celery worker is running in the django admin interface
If not running execute this command
celery -A provcon worker -l info
Test your task from your django application
If works run the celery worker in background like a daemon
I'm referring to Django Celery documents.
I created celery.py in my proj/proj just as the document said. and then included __init__.py
celery.py
from __future__ import absolute_import
import os
from celery import Celery
from django.conf import settings
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'proj.settings')
app = Celery('proj')
app.conf.update(
CELERY_RESULT_BACKEND='djcelery.backends.database:DatabaseBackend',
)
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
__init__.py
from __future__ import absolute_import
from .celery import app as celery_app
I installed pip install django-celery , then migrated python manage.py migrate djcelery
It made some of the tables in my DB.
tasks.py
from __future__ import absolute_import
from celery import shared_task
import requests
import json
#shared_task
def post_notification(data,url):
headers = {'content-type': 'application/json'}
requests.post(url, data=json.dumps(data), headers=headers)
After that I called my task in my views as
task = post_notification.delay(data,url)
print task.id #it prints an id
print task.status # prints PENDING
But nothing gets logged into any of my tables.
I've read my threads on SO,Thread1 , Thread2 and many more given on these threads, but nothing happens.
It provides me the ID & status of the task but how do I save the task in the DB? Usually it should get logged into celery_taskmeta, but there's nothing in there.
Though the task gets execute but I want to save the task in DB as well. How can I do it? Is there something I'm missing?
try this in celery.py
from __future__ import absolute_import
import os
from celery import Celery
from django.conf import settings
from celery.schedules import crontab
# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'app_name.dev_settings')
app = Celery('app_name')
# Using a string here means the worker will not have to
# pickle the object when using Windows.
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
app.conf.CELERY_TIMEZONE = 'UTC'
app.conf.update(
CELERY_RESULT_BACKEND='djcelery.backends.database:DatabaseBackend',
)
Add following in settings.py file
BROKER_URL = 'amqp://guest:guest#localhost//'
CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
And start the worker.