2008/9/30 Lars Ivar Igesund <[EMAIL PROTECTED]>: > Hi! > > I need to do a synchronous request over JMS, and I was told this can be done > by using an InOut exchange.
It sure can - e.g. try doing some remoting over JMS... http://activemq.apache.org/camel/spring-remoting.html > So I am doing something like this: > > public Object sendSync(Object message, Address recipient, Map<String, Object> > hdrs) { > > CamelTemplate<Exchange> template = new CamelTemplate<Exchange>( > routeContext ); > Map<String, Object> headers = new HashMap<String, Object>(); > if (hdrs != null) > headers.putAll(hdrs); > headers.put( "to", recipient.getAsString() ); > headers.put( "from", address.getAsString() ); > > DefaultExchange exchange = new DefaultExchange(routeContext); > exchange.setPattern(ExchangePattern.InOut); > exchange.getIn().setBody(message); > exchange.getIn().setHeaders(headers); > > return template.send("seda:outbox", exchange); > } BTW you can use the template.request*() methods instead of sending with a custom pattern. > and in the other end: > > from("myqueu").process(new MyProcessor()); > > and MyProcessor does > > Message m = exchange.getOut(true); > m.setBody(retpm); > exchange.setOut(m); > > The exhange is processed, but the sendSync does not seem to return, and after > a short while I start getting > > org.apache.camel.ExchangeTimedOutException: The OUT message was not received > within: 20000 millis on the exchange: Exchange[JmsMessage: > PersonMessage[action=AUTHENTICATE,person=<null>]] > org.apache.camel.ExchangeTimedOutException: The OUT message was not received > within: 20000 millis on the exchange: Exchange[JmsMessage: > PersonMessage[action=AUTHENTICATE,person=<null>]] > at > org.apache.camel.component.jms.JmsProducer.process(JmsProducer.java:114) > at > org.apache.camel.impl.converter.AsyncProcessorTypeConverter$ProcessorToAsynProcessorBridge.process(AsyncProcessorTypeConverter.java:44) > at > org.apache.camel.processor.SendProcessor.process(SendProcessor.java:73) > at > org.apache.camel.processor.DeadLetterChannel.process(DeadLetterChannel.java:143) > at > org.apache.camel.processor.DeadLetterChannel.process(DeadLetterChannel.java:87) > at org.apache.camel.processor.Pipeline.process(Pipeline.java:101) > at org.apache.camel.processor.Pipeline.process(Pipeline.java:85) > at > org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:40) > at > org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:44) > at > org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:68) > at > org.apache.camel.component.jms.EndpointMessageListener.onMessage(EndpointMessageListener.java:66) > at > org.springframework.jms.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:531) > at > org.springframework.jms.listener.AbstractMessageListenerContainer.invokeListener(AbstractMessageListenerContainer.java:466) > at > org.springframework.jms.listener.AbstractMessageListenerContainer.doExecuteListener(AbstractMessageListenerContainer.java:435) > at > org.springframework.jms.listener.AbstractMessageListenerContainer.executeListener(AbstractMessageListenerContainer.java:407) > at > org.springframework.jms.listener.SimpleMessageListenerContainer$2.onMessage(SimpleMessageListenerContainer.java:204) > at > org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:967) > at > org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:122) > at > org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:192) > at > org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122) > at > org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907) > at java.lang.Thread.run(Thread.java:619) > > > I suppose I am missing something to finish off the exchange, but I can't seem > to find any references to what this is. To me it seems I'm doing what is > hinted to in some earlier mailing list discussions. > > We are currently using Camel 1.3.0 Could you try 1.4.0 - I can't remember when JMS InOut support was added? -- James ------- http://macstrac.blogspot.com/ Open Source Integration http://open.iona.com
