[rabbitmq-discuss] Tornado Consumer example problem

Thu Aug 15 14:25:21 BST 2013

On Aug 15, 2013, at 1:20 PM, Priyanki Vashi <vashi.priyanki at gmail.com> wrote:

> Hi There ,
> 
> This might be very basic error but since I am trying to use Tornado connection for the first time, help on this would be appreciated. 
> 
> I was trying to use Tornado consumer example given on following pika site.
> 
> https://pika.readthedocs.org/en/0.9.13/examples/tornado_consumer.html
> 
> I am running into following error. The example is with URL connection method. 
> But I also tried to use hostname and port method as well as tried changing to IP address instead of hostname but still it's the same error. 
> 
> I have pika 0.9.13 library installed. My consumer & Producer works fine with select.connection method so I believe library is correctly installed.
> 
> Do I need to do something additional to get tornado connection working for both producer and consumer with pika?
> 
> Please suggest.
> 
> mq1 at mqserver1:~/Producer_Receiver/Latest$ python tornedo_c_1.py
> Traceback (most recent call last):
>   File "tornedo_c_1.py", line 357, in <module>
>     main()
>   File "tornedo_c_1.py", line 351, in main
>     example.run()
>   File "tornedo_c_1.py", line 326, in run
>     self._connection = self.connect()
>   File "tornedo_c_1.py", line 59, in connect
>     adapters.TornadoConnection(self.parameters, self.on_connection_open, stop_ioloop_on_close=False)
> TypeError: 'NoneType' object is not callable

Maybe you passed None as a callback somewhere?  What is the value of on_connection_open for example?