[rabbitmq-discuss] RabbitMQ C# client

Tue Mar 18 17:44:20 GMT 2014

{"The AMQP operation was interrupted: AMQP close-reason, initiated by Peer,
code=404, text=\"NOT_FOUND - no queue 'DupeQ' in vhost '/'\", classId=50,
methodId=10, cause="}

The above exception is encountered by both the QueueDeclarePassive method -
then the following  QueueDeclare.

Here's test code:

  try
                {
                    channel.QueueDeclarePassive("DupeQ");
                }
                catch (Exception ex)
                {
                    var errmsg = ex.Message;
                    dupeQExists = false;
                }

                if (dupeQExists)
                {
                    channel.QueueDelete("DupeQ");
                }

                try
                {
                    channel.QueueDeclare("DupeQ", false, false, false,
null);
                }
                catch (Exception ex)
                {
                    var errmsg = ex.Message;
                }

Since the QueueDeclare seems to issue the same message - I'm thinking that
possibly the passive bit is still set from the prior passive call.

S. Douglas Hunt | Software Engineer

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-----Original Message-----
From: Simon MacMullen [mailto:simon at rabbitmq.com] 
Sent: Tuesday, March 18, 2014 11:41 AM
To: Discussions about RabbitMQ; S. Doug Hunt
Subject: Re: [rabbitmq-discuss] RabbitMQ C# client

On 18/03/14 15:12, S. Doug Hunt wrote:
> We create a queue when a review operator first opens a unit of work.
> Other operators can open the same unit of work, but obviously we do 
> not want to add items to the queue from the database for subsequent
> operators.    So – the first thing we do is use the
> QueueDeclarePassive(queuename) method in a try-catch.
>
> So – for the first operator fails with the error that the queue was not
> found.   We then attempt to use the QueueDeclare method to create the
> queue, however it then fails with the same error.

Exactly the same error? What error message are you getting, precisely?

> I suspect that the QueueDeclarePassive method may have set the passive 
> bit – and the client is not resetting it after failing so that the 
> subsequent call also is acting like a passive call.

The passive bit is not stored in the model object; it's a parameter of the
individual calls to QueueDeclare.

Cheers, Simon

--
Simon MacMullen
RabbitMQ, Pivotal