Customizing the service URI of a Proxy Service in Enterprise Integrator

In WSO2 Enterprise integrator we have proxy services. In a proxy service by default if you create a proxy service the context of the service URL will be auto generated with the name of the proxy service name, For example if you create a proxy service name "myproxy". The service URL will be like the below.

http://localhost:8290/services/myproxy

But what if you want to have a custom URI? For ecample.

http://localhost:8290/services/myproxy/idservice/1.0

Following is how you can do this.

Step 01 - Open your axis2.xml, this can be found <EI_HOME>/conf/axis2/axis2.xml

Step 02 : In the axis2xml find the phaseOrder type="InFlow" and add the following section.

Add following dispatcher to the Phaseorder,

<handler name="RequestURIBasedDispatcher"
class="org.apache.axis2.dispatchers.RequestURIBasedDispatcher">

The dispatcher should be inserted in to the In-Flow at the Dispatch phase. It should be the first handler in the Dispatch phase.

Note : In axis2.xml we have different message phases. Namely (Inflow, Outflow and FaultFlow) So make sure you have added the dispatcher to the correct phase. You need to add the dispatcher to InFlow.

<phaseOrder type="InFlow">
<!-- System pre defined phases -->
<!--
The MsgInObservation phase is used to observe messages as soon as they are
received. In this phase, we could do some things such as SOAP message tracing & keeping
track of the time at which a particular message was received


NOTE: This should be the very first phase in this flow
-->
<phase name="MsgInObservation">
<handler name="TraceMessageBuilderDispatchHandler"
class="org.apache.synapse.transport.passthru.util.TraceMessageBuilderDispatchHandler"/>
</phase>
<phase name="Validation"/>
<phase name="Transport">
<handler name="RequestURIBasedDispatcher"
class="org.apache.axis2.dispatchers.RequestURIBasedDispatcher">
<order phase="Transport"/>
</handler>
<handler name="CarbonContextConfigurator"
class="org.wso2.carbon.mediation.initializer.handler.CarbonContextConfigurator"/>
<handler name="RelaySecuirtyMessageBuilderDispatchandler"
class="org.apache.synapse.transport.passthru.util.RelaySecuirtyMessageBuilderDispatchandler"/>
<handler name="SOAPActionBasedDispatcher"
class="org.apache.axis2.dispatchers.SOAPActionBasedDispatcher">
<order phase="Transport"/>
</handler>
<!--handler name="SMTPFaultHandler"
class="org.wso2.carbon.core.transports.smtp.SMTPFaultHandler">
<order phase="Transport"/>
</handler-->
</phase>
<phase name="Addressing">
<handler name="AddressingBasedDispatcher"
class="org.apache.axis2.dispatchers.AddressingBasedDispatcher">
<order phase="Addressing"/>
</handler>
</phase>
<phase name="Security"/>
<phase name="PreDispatch">
<!--Uncomment following handler to enable logging in ESB log UI-->
<!--<handler name="TenantDomainSetter"-->
<!--class="org.wso2.carbon.utils.logging.handler.TenantDomainSetter"/>-->
</phase>
<phase name="Dispatch" class="org.apache.axis2.engine.DispatchPhase">
<handler name="CustomURIBasedDispatcher"
class="org.apache.synapse.core.axis2.CustomURIBasedDispatcher"/>
<handler name="RequestURIBasedDispatcher"
class="org.apache.axis2.dispatchers.RequestURIBasedDispatcher"/>
<handler name="SOAPActionBasedDispatcher"
class="org.apache.axis2.dispatchers.SOAPActionBasedDispatcher"/>
<handler name="RequestURIOperationDispatcher"
class="org.apache.axis2.dispatchers.RequestURIOperationDispatcher"/>
<handler name="SOAPMessageBodyBasedDispatcher"
class="org.apache.axis2.dispatchers.SOAPMessageBodyBasedDispatcher"/>


<handler name="HTTPLocationBasedDispatcher"
class="org.apache.axis2.dispatchers.HTTPLocationBasedDispatcher"/>
<handler name="MultitenantDispatcher"
class="org.wso2.carbon.tenant.dispatcher.MultitenantDispatcher"/>
<handler name="SynapseDispatcher"
class="org.apache.synapse.core.axis2.SynapseDispatcher"/>
<handler name="SynapseMustUnderstandHandler"
class="org.apache.synapse.core.axis2.SynapseMustUnderstandHandler"/>
</phase>
<!-- System pre defined phases -->
<phase name="RMPhase"/>
<phase name="OpPhase"/>
<phase name="AuthPhase"/>
<phase name="MUPhase"/>
<!-- After Postdispatch phase module author or or service author can add any phase he want -->
<phase name="OperationInPhase"/>
</phaseOrder>

Step 03 : Now restart your server and you can create the following proxy service. Note the ServiceURI parameter.

<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
       name="SparkJobServerProxy"
       transports="https,http"
       statistics="disable"
       trace="disable"
       startOnLoad="true">
   <target>
      <inSequence>
         <log>
            <property name="=============TReached" value="=============="/>
         </log>
      </inSequence>
   </target>
   <parameter name="ServiceURI">/services/myproxy/idservice/1.0</parameter>
   <description/>
</proxy>

                                

So that is it, please drop a comment if you have any queries or need assistance.

Read More