Python消息队列：django+celery+kombu

部署安装

• 环境：
  django1.10
  python3.5

• 安装文件：
  kombu-3.0.37.tar.gz
  celery-3.1.25
  billiard-3.3.0.23
  django-celery
  django-kombu
  按照python库的安装方式安装即可

配置

• 配置一个django项目如prj，app为app
  不熟悉的话请参照
• celery配置
  1 在 prj/prj中添加celery.py文件：

from celery import Celery
import os

# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myqueue.settings')

from django.conf import settings  # noqa

app = Celery('myqueue')

# 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))

2 在prj/prj/settings.py文件中添加代码：

import djcelery
djcelery.setup_loader()
TIME_ZONE = 'Asia/Shanghai'
BROKER_URL = "django://"
CELERYBEAT_SCHEDULER = 'djcelery.schedulers.DatabaseScheduler'
CELERY_TIMEZONE = TIME_ZONE

3 修改在prj/prj/settings.py文件中INSTALLED_APPS配置：

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'zzh',
    'djcelery',
    'kombu.transport.django'
]

4 在prj/app中添加tasks文件：

import os
from celery import Celery
from django.conf import settings

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myqueue.settings')
app = Celery('tasks', backend='amqp', broker='django://')
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)


@app.task
def yunceh():
    print (1111111)

5 修改prj/app中的admin.py文件

from django.contrib import admin
from kombu.transport.django import models as kombu_models
admin.site.register(kombu_models.Message)

# Register your models here.

6 在prj/中添加2个bat文件taskBeat.bat和taskWorker.bat，用来分发和运行消息队列
taskBeat.bat：

%~d0
cd %~dp0
celery -A myqueue beat -l info
pause

taskWorker.bat:

%~d0
cd %~dp0
celery -A myqueue worker -l info

运行

进入django的admin站点，里面就有celery的消息任务配置

运行配置的2个bat文件，taskBeat.bat和taskWorker.bat。出现下面的配置就代表运行成功了。

issue

如果出现AttributeError: 'PeriodicTask' object has no attribute '_default_manager'，则修改C:\Python35\Lib\site-packages\djcelery\schedulers.py文件：
98行：change

obj = self.model._default_manager.get(pk=self.model.pk)

to

Model = type(self.model)
obj = Model._default_manager.get(pk=self.model.pk)