Hello, How do you receive the messages from the "external system" is this via messaging (JMS or other means) or some other protocol such as HTTP ?
Since you are already comfortable with JMS (or at least you will have to become) why not use a JMS queue to keep the messages on the first JBoss until they can be delivered to the second. First a camel route that receives message from external system and send it to a local JMS queue. Then a second camel route that acts as a simple message bridge between first and second JBoss passing the messages to the remote JMS queue. If you use HornetQ (default in JBoss 6+) you could use the HornetQ JMS bridge [1] instead of the second camel route. If you use HornetQ one important thing to remember is to NOT set the redelivery-delay on the local destination since this will break the order, instead if the connection to the remote fails close the connection to the local queue until the connection is resumed. [1] http://docs.jboss.org/hornetq/2.2.14.Final/user-manual/en/html/jms-bridge.html#quality-of-service // Pontus On Thu, Jul 26, 2012 at 9:58 AM, Jozsi_LXIII <[email protected]> wrote: > Hi, > > We have to communicate between two JBoss servers via JMS. > In one JBoss we plan to use Camel to send messages to the other JBoss > instance. > One of the main requirements is to send messages in the same order as we > received them from the external system even the receiving JBoss was down or > communication was brocken for a while. > Example: Consumer JBoss is down and we receive 1000 messages which shall be > persisted to be able to send them later. If it's possible to send again > messages it shall be possible to first send out those 1000 messages by > keeping their chronological order before sending other messages received > during sending them. > For sure we could persist every messages in our RDBMS and then send them > from that pool but I'm asking my self if Camel would have this kind of > built-in functionality. I've already checked the Aggregation, HawtDb, > MongoDb etc, but I don't really know how to apply one of them to realize the > described functionality. > I also searched in the forum if analogue or same subject already discussed, > as you see, w/o success. > Thank you in advance > Greetings > Josef > > > > -- > View this message in context: > http://camel.465427.n5.nabble.com/How-to-keep-sending-in-chronological-order-even-when-peer-was-down-for-a-while-tp5716501.html > Sent from the Camel - Users mailing list archive at Nabble.com.
