[rabbitmq-discuss] Publisher and Consumer design doubts

Thu Jul 26 17:51:55 BST 2012

Dear ___,

Your example code appears to register the consumer callback repeatedly
in a loop, draining events after doing this. This cannot be good use of
the interface (but I could be wrong).

You may like to look at http://pypi.python.org/pypi/librabbitmq/ for
information about how to use the library correctly. There is an example
on the first page that demonstrates the consumer idiom.

The five minutes pause is likely enough time either for the repeated
stuff to clog up the client somehow, or for some network mechanism to
close the connection since nothing is happening on it. RabbitMQ will not
do this, but I am told there are network firewalls and stuff that will
unceremoniously chop a connection if it is silent for a while. It is not
clear that the client would ever notice this.

If these steps do not help I recommend looking in the RabbitMQ logs to
see why the connection is lost. Come to think of it, I would recommend
looking there anyway. You do not say if your tests are run locally or if
the server is on a different machine from the publisher/consumers?

Good luck, 
____ ____ (a happy bunny)
----------yet more definitions from the SPD----------
corrugate (n.) T.V. soap scandal.
olympic (n.) A camp road-digger.
jamboree (n.) A conserve made from French cheese.

On 26 Jul 2012, at 10:34, APA wrote:

> High, I wonder if someone can help me
> 
> I'm using python and librabbitmq
> 
> I've a publisher and consumer (files are attached)
> 
> First Test 
> The consumer declares and binds a queue to the exchange with AutoDelete=True
> Start the consumer then the publisher.
> Everything works great until I kill the publisher. Then wait five minutes and run the publisher again.
> When it starts, RabbitMQ deletes the queue. The consumer does not get notice that he "loss connection"
> 
> Second Test
> Change the consumer queue to be AutoDelete=False.
> Everything works great until I kill the publisher. Then wait five minutes and run the publisher again.
> The queue is not deleted but the consumer does not get notice that he "loss connection" and no message are received.
> 
> This behavior is normal or I'm making a great mistake, because I'm supposing the consumer should be listening to incoming messages from publisher.
> 
> Thanks in advanced
> 
> Best regards
> 
> 
> 
> 
> <consumer.py><publisher.py>_______________________________________________
> rabbitmq-discuss mailing list
> rabbitmq-discuss at lists.rabbitmq.com
> https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss

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