[rabbitmq-discuss] Redeliever message with path in exchange to exchange binding

Sun Oct 7 09:02:33 BST 2012

I understand the signature of exchange:route/2, but what would rabbitmq do
after acquiring all the destinations? Would it deliver the message to those
destinations?

Sincerely,

Son Tran-Nguyen

On Sun, Oct 7, 2012 at 12:22 AM, Matthias Radestock
<matthias at rabbitmq.com>wrote:

> Son,
>
>
> On 05/10/12 21:42, Son Tran-Nguyen wrote:
>
>> I am trying to write a custom exchange type in which when bound to
>> another exchange, it will change the message so that the final queue
>> will also know which path the message were routes to.
>>
>
> Message routing determines the destinations of messages. It does not
> deliver the messages to these destinations, nor can it alter the messages.
>
> Take a look at the signature of exchange:route/2:
>
> route(rabbit_types:exchange(), rabbit_types:delivery()) ->
>         rabbit_router:match_result()
>
> where
>
> rabbit_router:match_result() :: [rabbit_types:binding_**destination()]
>
> rabbit_types:binding_**destination() ::
>         rabbit_amqqueue:name() | rabbit_exchange:name()
>
> i.e. route/2 returns a list of exchanges and queues.
>
>
> So what you are trying to do simply cannot be done.
>
>
> Regards,
>
> Matthias.
>
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