This document showcases how to use different scripting languages like Groovy, JavaScript, Python, and Ruby in MuleSoft ESB flows. It defines HTTP listener endpoints for each script type and uses the scripting component to execute scripts that concatenate a greeting message with the payload. Logging is added before and after each script to output the payload value. Executing the given URLs with a script name parameter will trigger the relevant flow and script.

1. MuleSoft ESB
Scripting Support
By
AKASH PRAJAPATI

2. Scripting Support
Topics :
• Different type of Scripting Supports in Mule with example
Purpose :
To showcase different scripting supports in MuleSoft ESB.
Pre-requisites :
• Basic under standing of Mule ESB
• JDK 1.8 or above
• Anypoint Studio v 6.0.0 or above
• Mule Server v 3.8.0 EE or above

3. Flow Details : Groovy and JavaScript
<http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0" port="9091" doc:name="HTTP Listener Configuration"/>
<flow name="GroovyScriptFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/groovy" doc:name="HTTP"/>
<logger message="#['START : Groovy Flow']" level="INFO" doc:name="Logger"/>
<set-payload value="#[message.inboundProperties.'http.query.params'.scriptname]" doc:name="Set Payload"/>
<scripting:component doc:name="Groovy-Script">
<scripting:script engine="Groovy"><![CDATA[return "Hello " + payload + " Script";]]></scripting:script>
</scripting:component>
<logger message="#['Payload=' + payload]" level="INFO" doc:name="Logger"/>
<logger message="#['END : Groovy Flow']" level="INFO" doc:name="Logger"/>
</flow>
<flow name="JavaScriptFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/java" doc:name="HTTP"/>
<logger message="#['START : Java Flow']" level="INFO" doc:name="Logger"/>
<set-payload value="#[message.inboundProperties.'http.query.params'.scriptname]" doc:name="Set Payload"/>
<scripting:component doc:name="Java-Script">
<scripting:script engine="JavaScript"><![CDATA[message.payload = "Hello " + payload + " Script";
result = message;]]></scripting:script>
</scripting:component>
<logger message="#['Payload=' + payload]" level="INFO" doc:name="Logger"/>
<logger message="#['END : Java Flow']" level="INFO" doc:name="Logger"/>
</flow>

4. <flow name="PythonScriptFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/python" doc:name="HTTP"/>
<logger message="#['START : Python Flow']" level="INFO" doc:name="Logger"/>
<set-payload value="#[message.inboundProperties.'http.query.params'.scriptname]" doc:name="Set Payload"/>
<scripting:component doc:name="Python-Script">
<scripting:script engine="jython"><![CDATA[result = "Hello " + payload + " Script";]]></scripting:script>
</scripting:component>
<logger message="#['Payload=' + payload]" level="INFO" doc:name="Logger"/>
<logger message="#['END : Python Flow']" level="INFO" doc:name="Logger"/>
</flow>
<flow name="RubyScriptFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/ruby" doc:name="HTTP"/>
<logger message="#['START : Ruby Flow']" level="INFO" doc:name="Logger"/>
<set-payload value="#[message.inboundProperties.'http.query.params'.scriptname]" doc:name="Set Payload"/>
<scripting:component doc:name="Ruby-Script">
<scripting:script engine="jruby"><![CDATA[return "Hello " + $payload + " Script";]]></scripting:script>
</scripting:component>
<logger message="#['Payload=' + payload]" level="INFO" doc:name="Logger"/>
<logger message="#['END : Ruby Flow']" level="INFO" doc:name="Logger"/>
</flow>
Flow Details : Python & Ruby

5. Logger Information:
------------------------ Thank You -------------------------
(*) Steps :
Execute below URLs.
http://localhost:9091/groovy?scriptname=Groovy
http://localhost:9091/java?scriptname=Java
http://localhost:9091/python?scriptname=Python
http://localhost:9091/ruby?scriptname=Ruby
(*) Validate Log and Payload values