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| |
| <document> |
| <properties> |
| <title>Apache Synapse - Sample 381</title> |
| </properties> |
| <body> |
| <section name="Sample 381: Class Mediator for CBR of Binary Messages"> |
| <div class="xmlConf"><definitions xmlns="http://ws.apache.org/ns/synapse"> |
| |
| <proxy name="JMSBinaryProxy" transports="jms"> |
| <target inSequence="BINARY_CBR_SEQ"/> |
| </proxy> |
| |
| <sequence name="BINARY_CBR_SEQ"> |
| <in> |
| <log level="full"/> |
| <property action="set" name="OUT_ONLY" value="true"/> |
| <class name="samples.mediators.BinaryExtractMediator"> |
| <property name="offset" value="11"/> |
| <property name="length" value="4"/> |
| <property name="variableName" value="symbol"/> |
| <property name="binaryEncoding" value="utf-8"/> |
| </class> |
| <log level="custom"> |
| <property name="symbol" expression="get-property('symbol')"/> |
| </log> |
| <switch source="get-property('symbol')"> |
| <case regex="GOOG"> |
| <send> |
| <endpoint> |
| <address |
| uri="jms:/dynamicTopics/mdd.GOOG?transport.jms.ConnectionFactoryJNDIName=TopicConnectionFactory&java.naming.factory.initial=org.apache.activemq.jndi.ActiveMQInitialContextFactory&java.naming.provider.url=tcp://localhost:61616&transport.jms.DestinationType=topic"/> |
| </endpoint> |
| </send> |
| </case> |
| <case regex="MSFT"> |
| <send> |
| <endpoint> |
| <address |
| uri="jms:/dynamicTopics/mdd.MSFT?transport.jms.ConnectionFactoryJNDIName=TopicConnectionFactory&java.naming.factory.initial=org.apache.activemq.jndi.ActiveMQInitialContextFactory&java.naming.provider.url=tcp://localhost:61616&transport.jms.DestinationType=topic"/> |
| </endpoint> |
| </send> |
| </case> |
| <default/> |
| </switch> |
| </in> |
| </sequence> |
| |
| </definitions></div> |
| <subsection name="Objective"> |
| <p> |
| Demonstrate an advanced content based routing (CBR) scenario using a custom mediator |
| </p> |
| </subsection> |
| <subsection name="Pre-requisites"> |
| <p> |
| <ul> |
| <li> |
| Setup and start a JMS broker (Apache ActiveMQ can be used as the |
| JMS broker for this scenario.Refer <a href="setup/jms.html#intro">JMS setup guide</a> for information on |
| how to run ActiveMQ.) |
| </li> |
| <li> |
| Enable the JMS transport receiver and sender of Synapse (Refer JMS setup |
| guide for more details) |
| </li> |
| <li> |
| Start Synapse using the configuration numbered 381 (repository/conf/sample/synapse_sample_381.xml) |
| <div class="command"> |
| Unix/Linux: sh synapse.sh -sample 381<br/> |
| Windows: synapse.bat -sample 381 |
| </div> |
| </li> |
| </ul> |
| </p> |
| </subsection> |
| <subsection name="Executing the Client"> |
| <p> |
| In this configuration, a proxy service has been defined to accept incoming JMS |
| messages. JMS messages contain binary payloads. User configures the offset, length, |
| and binary encoding of the text literal that Synapse should use for CBR. Configuration |
| simply routes the messages based on this text to different endpoints. |
| </p> |
| <p> |
| A JMS producer and two instances of a consumer used to demonstrate the CBR functionality. |
| </p> |
| <p> |
| Now run the first consumer using the following command. |
| </p> |
| <div class="command">ant mddconsumer -Djms_topic=mdd.MSFT</div> |
| <p> |
| Now run the second consumer using the following command. |
| </p> |
| <div class="command">ant mddconsumer -Djms_topic=mdd.GOOG</div> |
| <p> |
| Now run the market data producer to genenrate market data for symbol 'MSFT' using |
| the following command. |
| </p> |
| <div class="command">ant mddproducer -Dsymbol=MSFT</div> |
| <p> |
| Now run the market data producer to genenrate market data for symbol 'GOOG' using |
| the following command. |
| </p> |
| <div class="command">ant mddproducer -Dsymbol=GOOG</div> |
| <p> |
| You will see the below output in the client console(s) based on the symbol. |
| </p> |
| <div class="consoleOutput">mddconsumer: |
| [java] Market data recived for symbol : topic://mdd.MSFT |
| [java] Market data recived for symbol : topic://mdd.MSFT</div> |
| </subsection> |
| </section> |
| <p><a href="../samples.html">Back to Catalog</a></p> |
| </body> |
| </document> |
