[rabbitmq-discuss] Pika 0.9.5 - How to handle Rabbit Stop ?

Fri Aug 31 17:15:56 BST 2012

Hi David,

What *kind* of adapter is this connection please? I know very little about Pika, but I can attempt to figure out what you *should* be doing to get the behaviour you want. But there's a big difference between the behaviours of say, the blocking versus the polling/select based adapters.

Cheers,
Tim 

On 29 Aug 2012, at 10:42, David Myllykangas wrote:

>  
> Hi
>  
> We are using Rabbit 2.8.5 and Pika 0.9.5 to process rabbit-queue from python.
>  
> If I am doing a 'rabbitctrl stop' to stop Rabbit Server, my python script hangs, and get uninteruptable.
>  
> This is the console output I get when I stop the Rabbit Server
>  
> Traceback (most recent call last):
>   File ".../pycims/queue.py", line 87, in start_consuming
>     connection.ioloop.start()
>   File ".../pika/adapters/select_connection.py", line 124, in start
>     self.poller.start()
>   File ".../pika/adapters/select_connection.py", line 374, in start
>     self.poll()
>   File ".../pika/adapters/select_connection.py", line 388, in poll
>     self._handler(events[0][0], events[0][1])
>   File ".../pika/adapters/base_connection.py", line 137, in _handle_events
>     self._handle_error(error)
>   File ".../pika/adapters/base_connection.py", line 106, in _handle_error
>     error_code = error[0]  # Python <= 2.5
> TypeError: 'NoneType' object is not subscriptable
>  
> This is the code; (I am expecting an Exception to be thrown on line 93, so I can handle the situation.) What am I doing wrong?
>  
> 86        try:
> 87            connection.ioloop.start()
> 88        except KeyboardInterrupt:
> 89            self.stop_consuming()
> 90            connection.ioloop.stop()
> 91            connection.close()
> 92            raise
> 93        except Exception, e:
> 94            print 'Exception %s' % str(e)
> 95            raise
>  
> Thanks,
> David
>  
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