使用 Celery 2.6.0rc5 时发生 TypeError

Question

我正在使用Celery 2.6.0rc5，并收到以下错误：

[2012-06-22 23:01:42,016: ERROR/MainProcess] Unrecoverable error: TypeError('handle_event() takes exactly 3 arguments (1 given)',)
Traceback (most recent call last):
  File "/home/bmh/celery/celery/worker/__init__.py", line 350, in start
    component.start()
  File "/home/bmh/celery/celery/worker/consumer.py", line 369, in start
    self.consume_messages()
  File "/home/bmh/celery/celery/worker/consumer.py", line 435, in consume_messages
    readers[fileno](fileno, event)
  File "/home/bmh/kombu/kombu/transport/redis.py", line 636, in handle_event
    self._callbacks[queue](message)
  File "/home/bmh/kombu/kombu/transport/virtual/__init__.py", line 461, in _callback
    return callback(message)
  File "/home/bmh/kombu/kombu/messaging.py", line 482, in _receive_callback
    self.receive(decoded, message)
  File "/home/bmh/kombu/kombu/messaging.py", line 454, in receive
    [callback(body, message) for callback in callbacks]
  File "/home/bmh/celery/celery/worker/consumer.py", line 397, in on_task_received
    [callback() for callback in on_task_callbacks]
TypeError: handle_event() takes exactly 3 arguments (1 given)

我pulled both kombu and celery from git just moments ago，并在安装了redis-server (2:2.2.12-1build1) 作为代理的Ubuntu 12.04 LTS 上尝试这个。

我的配置 (celeryconfig.py) 是：

BROKER_URL = "redis://localhost:6379/0"
BACKEND_URL = BROKER_URL
CELERY_RESULT_BACKEND = "redis"
CELERY_REDIS_HOST = "localhost"
CELERY_REDIS_PORT = 6379
CELERY_REDIS_DB = 0

我的工人 (worker.py) 是：

#!/usr/bin/python2.7
from celery import Celery

celery = Celery()

celery.config_from_object('celeryconfig')

@celery.task(ignore_result=True)
def atest(data):
    print "Got data: %s" % data

if __name__ == "__main__":
    celery.start()

当我使用$ ./worker.py worker 运行worker 时，我从python shell 调用worker 如下：

import worker
worker.atest("abc")

工人报告上述错误，报告一个更长的错误，最终以工人退出以下情况结束：

[2012-06-22 23:01:43,025: WARNING/MainProcess] File "/home/bmh/kombu/kombu/utils/eventio.py", line 95, in unregister
[2012-06-22 23:01:43,025: WARNING/MainProcess] self._epoll.unregister(fd)
[2012-06-22 23:01:43,025: WARNING/MainProcess] ValueError
[2012-06-22 23:01:43,025: WARNING/MainProcess] :
[2012-06-22 23:01:43,026: WARNING/MainProcess] I/O operation on closed epoll fd

顺便说一句，当我运行$ ./worker.py shell 并运行“import kombu;kombu.version”时，它会报告 2.2.2，据我所知是最新版本。可能还值得注意的是someone else encountered this，但似乎通过更新kombu解决了它。

由于这确实是我能想象到的最简单的 celery 项目，我对 celery 完全陌生，而且这是一个开发版本，我有点不知道从哪里开始，如果有任何帮助，我将不胜感激。

感谢您的阅读。

Answer 1

我似乎已经通过更新到最新版本的Billiard 解决了这个问题：

$ git clone https://github.com/celery/billiard
$ cd billiard 
$ python setup.py develop