我想用code available here检查official demo Celery project for django中的基本芹菜功能。
我的修改是demoapp/views.py (当然还有指向这个视图的urls.py ):
from __future__ import absolute_import, unicode_literals
from django.http import HttpResponse
from demoapp.tasks import add, mul, xsum
def home(request):
return HttpResponse("Your output is: %s" % mul.delay(22,4).get(timeout=1) )
尽管运行芹菜工人的终端显示任务已收到,并显示正确的返回值,但总是会给出超时错误。
但是,如果我启动python shell python ./manage.py shell
,然后运行
from demoapp.tasks import add, mul, xsum
mul.delay(22,4).get(timeout=1)
我立即得到了预期的结果。可能的问题是什么?
Rabbitmq服务器正在运行,我使用的是Celery 4.2.1,django 2.0.6。
demoapp/tasks.py:
from __future__ import absolute_import, unicode_literals
from celery import shared_task
@shared_task
def add(x, y):
return x + y
@shared_task
def mul(x, y):
return x * y
@shared_task
def xsum(numbers):
return sum(numbers)
proj/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', 'proj.settings')
app = Celery('proj')
# Using a string here means the worker doesn'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))
proj/settings.py
...
CELERY_BROKER_URL = 'amqp://guest:guest@localhost//'
CELERY_ACCEPT_CONTENT = ['json']
CELERY_RESULT_BACKEND = 'db+sqlite:///results.sqlite'
CELERY_TASK_SERIALIZER = 'json'
...
发布于 2018-07-30 06:24:45
如the bottom of this page所述,安装result后端解决了问题。
https://stackoverflow.com/questions/51584556
复制相似问题