Sorry Claus...
I see that we cannot do:
from("jms:delivery-queue).recipientList().header(Constants.ROUTE_HEADER).to(myProcoessor));
I cannot use to on recipientList() or header(name)
Also I cannot do
errorHandler(deadLetterChannel(myProcessor).maximumRedeliveries(0);
deadLetterChannel accepts String definition of Endpoint or Endpoint object.
It does not accept a Processor. But I think that is fine - I can route it to
a dead letter queue and have a queue listener process the updates. Or even
write another route like:
from("jms:temp-dead-letter-queue").process(myProcessor).to("jms:dead-letter-queue");
Any other idea? What do you think?
Hari Gangadharan
Claus Ibsen wrote:
>
> Hi
>
> Camel will by default use DeadLetterChannel to handle failed exchanges
> where it will retry 6 times. So after 6 attempts and still a failure it
> will log it as ERROR.
> http://activemq.apache.org/camel/dead-letter-channel.html
> http://activemq.apache.org/camel/error-handler.html
>
>
> This behavior needs to be changed since you want to WRITE to a database
> about this ERROR. Also you want to write to the database if it's an OK.
>
> So we need to instruct Camel to use send failure exchanges to your
> processor where you can write ERROR in the database.
>
> // so we setup the error handler to use DLC but with your processor as
> destination and with 0 redeliveries.
> MyProcessor myProcessor = new MyProcessor();
> errorHandler(deadLetterChannel(myProcessor).maximumRedeliveries(0);
> from("jms:delivery-queue).recipientList().header(Constants.ROUTE_HEADER);
>
>
> But we still need to set the OK situation. So we can just do it as adding
> a .to with your processor.
>
> from("jms:delivery-queue).recipientList().header(Constants.ROUTE_HEADER).to(myProcoessor);
>
> Then in myProcessor you can detect if the Exchange is failed or not
>
> public class MyProcessor
>
> public void process(Exchange exchange) {
> Boolean failed = exchange.isFailed();
> If (isFailed) {
> // write ERROR in DB
> } else {
> // write OK in DB
> }
> }
>
>
>
>
>
>
> Med venlig hilsen
>
> Claus Ibsen
> ......................................
> Silverbullet
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> Tlf. +45 2962 7576
> Web: www.silverbullet.dk
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>
>
>
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