使用 djcelery 抓取网站并填充 django 模型

Question

我在让 celery 与 django 一起使用时遇到问题。我想使用 celery 抓取一个网站并每 20 分钟更新一些 django 模型。

我在我的应用程序目录中创建了一个具有更新类的任务文件：

class Update(PeriodicTask):
    run_every=datetime.timedelta(minutes=20)

    def run(self, **kwargs):
        #update models

如果我从命令行运行它，该类会正确更新我的模型：

if __name__ == '__main__':
    Update().run()

setting.py 中的我的 celery 配置如下所示：

CELERY_RESULT_BACKEND = "database"
BROKER_HOST = 'localhost'
BROKER_PORT = 5672
BROKER_USER = 'Broker'
BROKER_PASSWORD = '*password*'
BROKER_VHOST = 'broker_vhost'

但是当我运行 manage. py celeryd -v 2 我收到连接错误：

[2010-12-29 09:28:15,150: ERROR/MainProcess] CarrotListener: Connection Error: [Errno 111] Connection refused. Trying again in 10 seconds...

我缺少什么？

更新：

我发现django-kombu 看起来相当不错，因为它使用我现有的数据库。我已经安装了 django-kombu 和 kombu，但现在运行 manage.py celeryd -v 2 时出现以下错误。

Traceback (most recent call last):
  File "manage.py", line 11, in <module>
    execute_manager(settings)
  File "<webapp_path>/lib/python2.6/django/core/management/__init__.py", line 438, in execute_manager
    utility.execute()
  File "<webapp_path>/lib/python2.6/django/core/management/__init__.py", line 379, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "<webapp_path>/lib/python2.6/django/core/management/base.py", line 191, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "<webapp_path>/lib/python2.6/django/core/management/base.py", line 220, in execute
    output = self.handle(*args, **options)
  File "<webapp_path>/lib/python2.6/django_celery-2.1.4-py2.6.egg/djcelery/management/commands/celeryd.py", line 20, in handle
    worker.run(*args, **options)
  File "<webapp_path>/lib/python2.6/celery-2.1.4-py2.6.egg/celery/bin/celeryd.py", line 83, in run
    from celery.apps.worker import Worker
  File "<webapp_path>/lib/python2.6/celery-2.1.4-py2.6.egg/celery/apps/worker.py", line 15, in <module>
    from celery.task import discard_all
  File "<webapp_path>/lib/python2.6/celery-2.1.4-py2.6.egg/celery/task/__init__.py", line 7, in <module>
    from celery.execute import apply_async
  File "<webapp_path>/lib/python2.6/celery-2.1.4-py2.6.egg/celery/execute/__init__.py", line 7, in <module>
    from celery.result import AsyncResult, EagerResult
  File "<webapp_path>/lib/python2.6/celery-2.1.4-py2.6.egg/celery/result.py", line 9, in <module>
    from celery.backends import default_backend
  File "<webapp_path>/lib/python2.6/celery-2.1.4-py2.6.egg/celery/backends/__init__.py", line 51, in <module>
    default_backend = DefaultBackend()
TypeError: __init__() takes exactly 2 arguments (1 given)

Answer 1

看起来您没有安装/运行代理（RabbitMQ？）

Answer 2

我也遇到了同样的问题，问题是我的导入路径错误。

也许，您将任务导入为

from celery import task。

虽然你应该

from celery.task import task