Using SMQueue with message queues that failover
Previously I wrote about using SMQueue to create some simple consumers and producers for message queues. I also wrote about setting up a high availability message store. In the case of a failure the message queue will turn the slave node into the master. Unfortunately the producer and consumer I created will forever try to reconnect to the now-dead ex-master node.
Using smqueue 0.1.0 (which was produced when I created the simple producer and consumer) it's trivial to add failover capabilities to the clients. Where the SMQueue instance is created simply add another key, secondary_host, to the configuration and point it to the second broker.
queue = SMQueue(
:name => "/queue/numbers.ascending",
:host => "mq1.domain.com",
:secondary_host => "mq2.domain.com",
:adapter => :StompAdapter
)I think that the plan is to support more than two broker nodes and support for failover strategies into future versions of SMQueue.