OSB Dynamic Routing and Transaction Rollback

Question

Hi,
I have implemented dynamic routing to different jms business services.
That's the flow:
1. I have a proxy service which is invoked via a message delivered to a jms queue(XA connection factory), this queue is configured with
Error Destination, expiration policy redirect, redelivery limit 5 and redelivery delay override 100
2. I use a dynamic routing action
<ctx:route isProxy="false">
<ctx:service>
$businessServiceXXX
</ctx:service>
</ctx:route>
where $businessServiceXXX is a variable to hold my target jms business service, its value depends on some incoming inbound headers.
3. if the endpoint is not correct(business service endpoint is dynamic) I catch the error in a Error handler, I raise an Error but :
THE MESSAGE IS NOT REDIRECTED TO THE ERROR QUEUE.
I know I could solve the issue with another approach like an external table to capture(fix) the endpoints, but it won't be so flexible in terms of deployment capability.
Any Ideas ?
Thanks,
T.

Answer 1

Hi Tony,
Tested this in ALSB 2.5 . Transaction rollbacks fine when error in dynamic routing. I am attaching the test JMS proxy we have used for this.
We had XA enabled CF for JMS proxy service and target JMS BS. The dynamic route was configured in route node with no route error handler or service error handler. The test case was to pause the target JMS queue for production. We could see messages rolling back to the source queue and getting redelivered.
Attaching the Sbconfig for this proxy. Proxy Name: Dynamic Routing
<?xml version="1.0" encoding="UTF-8"?>
<xml-fragment name="DynamicRouting">
<ser:coreEntry isEnabled="true" isProxy="true" name="DynamicRouting" isAutoPublish="false" xmlns:ser="http://www.bea.com/wli/sb/services">
<ser:description/>
<ser:binding type="abstract XML"/>
</ser:coreEntry>
<ser:endpointConfig xmlns:ser="http://www.bea.com/wli/sb/services">
<tran:provider-id xmlns:tran="http://www.bea.com/wli/sb/transports">jms</tran:provider-id>
<tran:inbound xmlns:tran="http://www.bea.com/wli/sb/transports">true</tran:inbound>
<tran:URI xmlns:tran="http://www.bea.com/wli/sb/transports">
<env:value xmlns:env="http://www.bea.com/wli/config/env">jms://localhost:7001/XACF/InputQueue</env:value>
</tran:URI>
<tran:inbound-properties xmlns:tran="http://www.bea.com/wli/sb/transports"/>
<tran:all-headers xmlns:tran="http://www.bea.com/wli/sb/transports">false</tran:all-headers>
<tran:provider-specific xsi:type="jms:JmsEndPointConfiguration" xmlns:jms="http://www.bea.com/wli/sb/transports/jms" xmlns:tran="http://www.bea.com/wli/sb/transports" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<jms:is-queue>true</jms:is-queue>
<jms:is-secure>false</jms:is-secure>
<jms:inbound-properties>
<jms:response-required>false</jms:response-required>
</jms:inbound-properties>
<jms:request-encoding>UTF-8</jms:request-encoding>
</tran:provider-specific>
</ser:endpointConfig>
<ser:router xmlns:ser="http://www.bea.com/wli/sb/services">
<con:pipeline name="PipelinePairNode1_request" type="request" xmlns:con="http://www.bea.com/wli/sb/pipeline/config">
<con:stage name="Configuration">
<con:comment/>
<con:context/>
<con:actions>
<con1:assign varName="input" xmlns:con1="http://www.bea.com/wli/sb/stages/transform/config">
<con1:expr>
<con:xqueryText xmlns:con="http://www.bea.com/wli/sb/stages/config"><![CDATA[<root>
<type value="jms">
          <service>DynamicRouting/BusinessService/JMS</service>
     </type>
     <type value="http">
     <service>DynamicRouting/BusinessService/HTTP</service>
     <operation>Test</operation>
     </type>
</root>]]></con:xqueryText>
</con1:expr>
</con1:assign>
</con:actions>
</con:stage>
</con:pipeline>
<con:pipeline name="PipelinePairNode1_response" type="response" xmlns:con="http://www.bea.com/wli/sb/pipeline/config"/>
<con:flow xmlns:con="http://www.bea.com/wli/sb/pipeline/config">
<con:pipeline-node name="PipelinePairNode1">
<con:request>PipelinePairNode1_request</con:request>
<con:response>PipelinePairNode1_response</con:response>
</con:pipeline-node>
<con:route-node name="DynamicRoute">
<con:comment/>
<con:context/>
<con:actions>
<con1:dynamic-route xmlns:con1="http://www.bea.com/wli/sb/stages/routing/config">
<con1:service>
<con:xqueryText xmlns:con="http://www.bea.com/wli/sb/stages/config">&lt;ctx:route>
     &lt;ctx:service isProxy="false">{data($input/*:type[@value=$body/*:body/*:type/text()]/*:service)}&lt;/ctx:service>
          if($input/*:type[@value=$body/*:body/*:type/text()]/*:operation) then
               &lt;ctx:operation>{data($input/*:type[@value=$body/*:body/*:type/text()]/*:operation)}&lt;/ctx:operation>
else()
&lt;/ctx:route></con:xqueryText>
</con1:service>
<con1:outboundTransform>
<con2:routing-options xmlns:con2="http://www.bea.com/wli/sb/stages/transform/config">
<con2:uriExpr>
<con:xqueryText xmlns:con="http://www.bea.com/wli/sb/stages/config">$body/*:body/*:url/text()</con:xqueryText>
</con2:uriExpr>
</con2:routing-options>
</con1:outboundTransform>
<con1:responseTransform/>
</con1:dynamic-route>
</con:actions>
</con:route-node>
</con:flow>
</ser:router>
</xml-fragment>
Regards,
Atheek
Edited by: atheek1 on 27-Apr-2010 19:48