Django-celery-redis 最小化例子

Django-celery-redis 最小化例子

1. 安装Django

   pip install Django

2. 安装redis

   pip install redis

3. 安装celery

   pip install celery django-celery

4. 创建Django项目

   django-admin.py startproject myproject

5. 新建APP

   python manage.py startapp celerytest

6. 编辑 settings.py

   import djcelery
       djcelery.setup_loader()
       BROKER_URL = "redis://127.0.0.1:6379/0"
       BACKEND_URL = "redis://127.0.0.1:6379/0"
       CELERY_RESULT_BACKEND = "redis"
   ​
       INSTALLED_APPS = [
       ......      
       'djcelery',   
           'celerytest',
       ]

7. 编辑 myproject/settings.py

   import djcelery djcelery.setup_loader() BROKER_URL = "redis://127.0.0.1:6379/0" BACKEND_URL = "redis://127.0.0.1:6379/0" CELERY_RESULT_BACKEND = "redis"

   INSTALLED_APPS = [
   ......      
   'djcelery',   
       'celerytest',
   ]

8. 编辑 celerytest/urls.py

   from django.conf.urls import url from celerytest import views

   urlpatterns=[
       url(r'^(?P<param>\d+)/$', views.index, name='index'),
       ]

9. 编辑 views.py

   from django.http import HttpResponse from celerytest.tasks import add

   def index(request,param):
       r = add.delay(int(param),int(param))
       return HttpResponse('param plus param is :'+ " " + str(r.get()))

10. 编辑celerytest/tasks.py

    from djcelery import celery from celery import Celery

    ​
    @celery.task(trail=True)
    def add(x, y): 
        return x + y
    ​
    @celery.task
    def sleeptask(i):
        from time import sleep
        sleep(i)
        return i
    ​
    @celery.task
    def raisetask():
        raise KeyError("foo")

11. 新建 myproject/celery.py

    from future import absolute_import, unicode_literals import os from celery import Celery, platforms

    # set the default Django settings module for the 'celery' program.
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myproject.settings')
    ​
    app = Celery('myproject')
    ​
    # 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()
    ​
    platforms.C_FORCE_ROOT = True
        
    @app.task(bind=True)
    def debug_task(self):
        print('Request: {0!r}'.format(self.request))

12. 编辑 myproject/init.py

    from future import absolute_import

    # 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']

13. 启动 celery的worker

    celery -A myproject worker -l info

14. 测试

    http://127.0.0.1:8000/celerytest/123/