Dear All,
I'm suddenly feel a bit loss on the usage and behaviour of camel and
will like to seek clarification.
<camel:camelContext>
<route id="processRequest">
<from uri="activemq:topic:request"/>
<bean ref="eventProcessor" method="processEvent"/>
</route>
<route id="sendResponse">
<from uri="direct:myProxy"/>
<setProperty propertyName="result">
<method ref="convertor"/>
</setProperty>
<bean ref="strategyManager"
method="isStrategyCompleted(${property.result})"/>
<choice>
<when>
<simple>${body}</simple>
<bean ref="camelJMS"
method="sendComplete(${property.result})"/>
</when>
</choice>
</route>
</camel:camelContext>
Given the scenario:
T=0; Request 1 published to activemq:topic:request
T=1; Request 2 published to activemq:topic:request
T=3; Request 3 published to activemq:topic:request
T=60; (External system place the result file for Request 2 into a folder),
picked up by
<from uri="direct:myProxy"/> in route sendResponse
My question.
1. Does camel start a new instance for all new message at
activemq:topic:request
2. If it does, will all 3 instances perform route sendResponse, even though
its not for them?
3. Camel is single instance, but will help to keep track of the exchanges
for you? (Very vague, and I not sure whether I imagining the correct
scenario.
4. Any other behaviour? I doubt it will hang at route 2, while waiting for
it to be trigger even if there are news messages on the
activemq:topic:request
Thanks and Best Regards,
Zuff
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