How to use message properties component

How to use Message Properties
component

Abstract
• The main motto of this PPT is how to use
Message Properties in our applications.

• .mflow
• <?xml version="1.0" encoding="UTF-8"?>
• <mule xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:vm="http://www.mulesoft.org/schema/mule/vm"
xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans" version="EE-3.4.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
• http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
• http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/current/mule-vm.xsd
• http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd">
• <flow name="MessagePropertiesFlow1" doc:name="MessagePropertiesFlow1">
• <http:inbound-endpoint exchange-pattern="request-response" host="localhost" port="8089" path="messageproperties" doc:name="HTTP"/>
• <message-properties-transformer scope="session" doc:name="Message Properties">
• <add-message-property key="property1" value="studio"/>
• </message-properties-transformer>
• <message-properties-transformer scope="outbound" doc:name="Message Properties">
• <add-message-property key="property2" value="mule"/>
• </message-properties-transformer>
• <logger message="--flow1--#[message.outboundProperties['property2']]--#[sessionVars['property1']]" level="INFO" doc:name="Logger"/>
• <vm:outbound-endpoint exchange-pattern="request-response" path="messageproperties" doc:name="VM"/>
• </flow>
• <flow name="MessagePropertiesFlow2" doc:name="MessagePropertiesFlow2">
• <vm:inbound-endpoint exchange-pattern="request-response" path="messageproperties" doc:name="VM"/>
• <logger message="---flow2--#[message.inboundProperties['property2']]--#[sessionVars['property1']]" level="INFO" doc:name="Logger"/>
• </flow>
• </mule>

• Output:
• INFO 2015-10-03 16:00:23,705 [[messageproperties].config.change.14.thread.1] org.mule.DefaultMuleContext:
• **********************************************************************
• * Application: messageproperties *
• * OS encoding: Cp1252, Mule encoding: UTF-8 *
• * *
• * Agents Running: *
• * Clustering Agent *
• * JMX Agent *
• **********************************************************************
• INFO 2015-10-03 16:00:23,706 [[messageproperties].config.change.14.thread.1]
org.mule.module.launcher.MuleDeploymentService:
• ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
• + Started app 'messageproperties' +
• ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
• INFO 2015-10-03 16:00:26,480 [[messageproperties].connector.http.mule.default.receiver.02]
org.mule.api.processor.LoggerMessageProcessor: --flow1--mule--studio
org.mule.lifecycle.AbstractLifecycleManager: Initialising: 'connector.VM.mule.default.dispatcher.771015974'.
Object is: VMMessageDispatcher
org.mule.lifecycle.AbstractLifecycleManager: Starting: 'connector.VM.mule.default.dispatcher.771015974'. Object
is: VMMessageDispatcher
org.mule.api.processor.LoggerMessageProcessor: ---flow2--mule--studio

• Flow of execution:
1. URL to trigger the service from browser
http://localhost:8089/messageproperties
2. In flow1 both outbound and session property
is created using message property component
3. Service displays both outbound and session
properties in flow1
4. In flow2 the outbound property is changes to
inbound proeprty
5. Flow2 displays both inbound and session
property

References
• http://www.mulesoft.org/documentation-
3.2/display/32X/Message+Property+Scopes

How to use message properties component

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