Routing Messages to a Dynamic List of Recipients

This example demonstrates message routing to a set of dynamic endpoints.

Synapse configuration

Following are the integration artifacts you can use to implement this scenario.

Error Handling SequenceFault SequenceProxy Service

<sequence name="errorHandler">
<makefault response="true">
   <code xmlns:tns="http://www.w3.org/2003/05/soap-envelope" value="tns:Receiver" />
   <reason value="COULDN'T SEND THE MESSAGE TO THE SERVER." />
</makefault>
<send />
</sequence>

<sequence name="fault">
<log level="full">
   <property name="MESSAGE" value="Executing default &quot;fault&quot; sequence" />
   <property name="ERROR_CODE" expression="get-property('ERROR_CODE')" />
   <property name="ERROR_MESSAGE" expression="get-property('ERROR_MESSAGE')" />
</log>
<drop />
</sequence>

<proxy name="RecipientListProxy" startOnLoad="true" transports="http https" xmlns="http://ws.apache.org/ns/synapse">
   <target>
      <inSequence>
            <header name="Action" value="urn:placeOrder"/>
            <property name="EP_LIST" value="http://localhost:9001/services/SimpleStockQuoteService,http://localhost:9002/services/SimpleStockQuoteService,http://localhost:9003/services/SimpleStockQuoteService"/>  
            <property name="OUT_ONLY" value="true" />
            <property name="FORCE_SC_ACCEPTED" value="true" scope="axis2" />
            <call>
               <endpoint>
                  <recipientlist>
                     <endpoints value="{get-property('EP_LIST')}" max-cache="20" />
                  </recipientlist>
               </endpoint>
            </call>
            <drop/>
      <outSequence>
            <send/>
      </outSequence>
      <faultSequence>
            <sequence key="errorHandler"/>
      </faultSequence
      </target>
</proxy>