Hi Its best to use the JMS Broker redelivery feature if possible. It has a persistent store for the messages, so they wont be lost in case of a crash.
Also the JMS consumer doesn't support the async routing engine in InOnly mode http://camel.apache.org/asynchronous-routing-engine.html Which you need in your example. There is a ticket to improve this. https://issues.apache.org/jira/browse/CAMEL-3632 On Mon, Feb 14, 2011 at 12:36 AM, Steve Smith <tarkast...@gmail.com> wrote: > Hi, > > All the documentation I've read (on the site and the book) implies > that if I enable asyncDelayedRedelivery on a queue's error handler the > queue should continue to deliver messages while there are retries > pending. However I cannot get Camel to produce this behaviour. > > To test this I've produced a small proof-of-concept app: > > https://github.com/tarka/Camel-Async-Test > > What it does: > > * Starts an embedded ActiveMQ broker, backed by a memory-only DB > * Creates two Camel JMS endpoints: 'inputq' and 'expiredMessages' > * There is a quartz job that injects 15 messages into the inputq, 1 > second apart > * Expired messages routes to a simple logging bean > * 'inputq' is routed to a logging bean that throw errors a certain points: > ** After 5 messages it throws a PermanentFailureException > ** After 10 messages it throws a TemporaryFailureException > * The error handler is configured as follows: > ** PermanentFailureExceptions are immediately sent to the expired queue > ** TemporaryFailureExceptions are retried with the following parameters: > *** 3 retries > *** 10 second delay between retries > *** Asynchronous retries > > What I expect to see: > > * After the 10th message the remaining 5 messages are delivered and > logged immediately > > What I actually see: > > * The 5 messages are queued up, and only flush out after the 3 retries > of the 10th message > > The only explanation of this that I can see is that the JMS queues are > transacted, but I see no warning or errors regarding this so it's not > clear. Is this behavior expected? Am I missing something? > > Thanks, > Steve > -- Claus Ibsen ----------------- FuseSource Email: cib...@fusesource.com Web: http://fusesource.com Twitter: davsclaus Blog: http://davsclaus.blogspot.com/ Author of Camel in Action: http://www.manning.com/ibsen/
