[rabbitmq-discuss] a request for a new feature in rabbitmq - prefix to randomly named queues.

[Alvaro Videla]

Hi,

As Matthias said, it should be pretty simple to generate your own random queue names. Still, if you want the server to do it for you and be able to provide a custom prefix, you can try patch I attached.

An erlang client that use this "extension" could be something like this:

-module(test_declare_prefix).

-export([test_prefix/1]).

-include("amqp_client.hrl").

test_prefix(Prefix) ->
    {ok, Connection} = amqp_connection:start(network, #amqp_params{}),
    {ok, Channel} = amqp_connection:open_channel(Connection),
    #'queue.declare_ok'{queue = Name} 
        = amqp_channel:call(Channel, #'queue.declare'{exclusive = true, auto_delete = true, 
                                      arguments = [{<<"x-name-prefix">>, longstr, Prefix}]}),
    amqp_channel:close(Channel),
    amqp_connection:close(Connection),
    Name.

See the <<"x-name-prefix">> there.

Cheers,

Alvaro

On Apr 20, 2011, at 11:34 AM, Matthias Radestock wrote:

> On 20/04/11 10:21, mysurf mail wrote:
>> Thanks for the reply . I am aware of it but when the system starts
>> running and all the clients are loaded in their computers I look at
>> the queues and get something like that (And usualy a lot more )
>> 
>> amq.gen-e6P2EpkGILdyipBFgyL8Og==        5
>> amq.gen-ei6+QWU2xEZ5rksix82WOg==        0
>> amq.gen-1k/o9ZMzPOUD/OTrPu+tLQ==        0
>> amq.gen-e126P2kGILdyipBFgyL8Og==        5
>> amq.gen-ei612+U2xEZ5rksix82WOg==        0
>> amq.gen-1k9ZMzP12OUD/OTrPu+tLQ==        0
>> amq.gen-e6pkGI3Ld12yipBFgyL8Og==        5
>> amq.gen-ei6+QWxEZ5rks12ix82WOg==        0
>> amq.gen-1k/o9ZzPOUD3/OTrPu+tLQ==        0
>> 
>> Now for maintenance reason I would love to add prefix for each group
>> or subject in my system.
> 
> Why don't you simply get your clients to generate the queue names? It's
> not exactly hard to generate a unique random string. Then you can use
> any naming scheme you want.
> 
> 
> Matthias.
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