[rabbitmq-discuss] custom exchange checking auth user

Dmitry Andrianov dmitry.andrianov at alertme.com
Tue Jul 1 14:53:49 BST 2014


One more question: some time ago I was told that either custom exchange 
or decorator will both serve for my purpose.
However while with exchange if I return empty list from route callback, 
no routing happens, the same does not seem to work in decorator.
Reading Erlang in rabbit_exchange.erl is very hard for me so I can be 
wrong but it looks like whatever decorator returns from route is only 
appended to the list of destinations and decorator cannot override the 
ones selected by exchange.

Is it correct? What is the correct way to deny processing message in the 

And is there a recommended best practice for what should be used for 
validation purposes - custom exchange or exchange decorator?

Many thanks.

On 26/06/14 18:13, Matthias Radestock wrote:
> On 26/06/14 18:10, Dmitry Andrianov wrote:
>> While we are there given that we have our custom exchange - how can we
>> "enrich" a message with some data like client's IP?
> you can't. That *would* require changes to APIs. And breaking some 
> significant assumptions on the way.
> Matthias.

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