WSO2 ESB Script Mediator Using JavaScript with a Json payload

Synapse supports Mediators implemented in a variety of scripting languages such as JavaScript, Groovy, or Ruby. For More information on script mediator please refer this link.

This blog post will explain a scenario of using script mediator with a Json payload.


Configure back-end
==============

1. Deploy this webapp in an appserver.
https://svn.wso2.org/repos/wso2/trunk/commons/qa/qa-artifacts/esb/esb481/JSONscenarios/withScriptMediator/pizzashop-rs_1.0.zip

Configure ESB
=============

2. Provide the following api synapse configuration.

<api name="pizzashop" context="/pizzashop">
 <resource methods="GET" uri-template="/api/menu/pizza*">
  <inSequence>
   <send>
    <endpoint>
     <http method="get"
uri-template="http://localhost:9765/pizzashop-rs_1.0/services/menu/pizza/all"/>
    </endpoint>
   </send>
  </inSequence>
  <outSequence>
   <log level="full"/>
    <script language="js">var payload = mc.getPayloadJSON();mc.setPayloadJSON(payload);    </script>
     <send/>
  </outSequence>
 </resource>
</api>

Invoking the service
==============

3. Invoke the service

curl -v "http://localhost:8280/pizzashop/api/menu/pizza/all"


You will get all the available pizza list.