Example illustrating how to send messages from one broker to another using federation.
Because federation is somehting that took me a bit of time to get right so I'm sharing my knowledge for others.
The demo itself is impractical and in the real world this is only useful when the brokers are separated by a WAN.
To run it, first make sure you have RabbitMQ 2.7.1 or above installed. The run the following two commands
$ ./start-node1.sh &
$ ./start-node2.sh &This will start two brokers, one running on port 25672 and another running on port 35672. They also have management consoles running on port 55555 and 55556 respectively.
Node1 has been configured with the federation plugin and defined node2 as an upstream node. This means any messages published to my-exchange on the upstream will be "federated" to the downstream.