[rabbitmq-discuss] Advice on where to reset connection and channel
mklishin at gopivotal.com
Sun Feb 16 06:44:43 GMT 2014
On 16 Feb 2014, at 09:09, cw storm <cwstorm at gmail.com> wrote:
> I don't think I would want to include the function to re-establish the connection/channel in both of the handlers. So, where would I perform the re-connect logic. Maybe I should just pick one.
JVM language clients that support reconnection, including RabbitMQ Java client itself on branch bug14587, have a wrapper connection that
delegates everything to the underlying connection (so, implements com.rabbitmq.client.Connection) and adds a shutdown listener
that performs recovery:
* Reconnects (creates a new delegate connection)
* Reopens all channels (there is a wrapper Channel as well), including various listeners
* Recovers queues, exchange, bindings, and consumers (in this order)
> Also, another consumer callback name "handleCancel". This will only be invoke when an unexpected cancellation by the broker. That would also mean I would have to reconsume from the other node by creating another connection/channel. I assume this does not get invoke during a restart of the broker or a force close connection. That would only apply to the two that I mentioned, right?
Not “unexpected cancellation” but when the queue is deleted.
Software Engineer, Pivotal/RabbitMQ
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