CreateConsumerAsync without creating queue

[pgarbo]

Hi,

Is there a way to call CreateConsumerAsync without creating an address/queue if it does not exist? The problem we have is that server creates a very specific type of queue dynamically and we don't want clients to create it with default parameters before server does it.

[Havret]

Hello @pgarbo,

Yes, you need to use factory method that accepts address and queue name:

var endpoint = Endpoint.Create("localhost", 5672, "guest", "guest");
var connectionFactory = new ConnectionFactory();
var connection = await connectionFactory.CreateAsync(endpoint);
var consumer = await connection.CreateConsumerAsync(address: "my-address", queue: "my-queue");

If the queue doesn't exist, CreateConsumerAsync will throw an exception.

I hope that helps,
Havret

[pgarbo]

Hi,

The code example does not throw exception, it is just creating a multicast queue for me:

I am using version 2.11.0.

Pawel

[Havret]

I see, you probably have auto-create-queues setting set to true on the broker. It mainly working with this setting set to false.

The only other thing I can think of is using topology manager to check if queue with the given name already exists. Or you could restrict permissions to createDurableQueue only to your server application.