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| |
| <document> |
| <properties> |
| <title>Apache Synapse - Sample 264</title> |
| </properties> |
| <body> |
| <section name="Sample 264: Request-Response Invocations with the JMS Transport"> |
| <div class="xmlConf"><definitions xmlns="http://ws.apache.org/ns/synapse"> |
| |
| <proxy name="StockQuoteProxy" transports="http"> |
| <target> |
| <endpoint> |
| <address |
| uri="jms:/SimpleStockQuoteService?transport.jms.ConnectionFactoryJNDIName=QueueConnectionFactory&java.naming.factory.initial=org.apache.activemq.jndi.ActiveMQInitialContextFactory&java.naming.provider.url=tcp://localhost:61616&transport.jms.DestinationType=queue"/> |
| </endpoint> |
| <inSequence> |
| <property action="set" name="transport.jms.ContentTypeProperty" value="Content-Type" |
| scope="axis2"/> |
| </inSequence> |
| <outSequence> |
| <property action="remove" name="TRANSPORT_HEADERS" scope="axis2"/> |
| <send/> |
| </outSequence> |
| </target> |
| <publishWSDL uri="file:repository/conf/sample/resources/proxy/sample_proxy_1.wsdl"/> |
| </proxy> |
| |
| </definitions></div> |
| <subsection name="Objective"> |
| <p> |
| In <a href="sample251.html">sample 251</a> we saw how to perform transport switching |
| between HTTP and JMS using a one-way invocation. Here we will do HTTP to JMS switching |
| with a two-way, request-response invocation. |
| </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#pre">JMS setup guide</a> |
| for information on how to run ActiveMQ.) |
| </li> |
| <li> |
| Enable the JMS transport receiver of the sample Axis2 server (Refer |
| <a href="setup/jms.html#server">JMS setup guide</a> for details) |
| </li> |
| <li> |
| Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2 (Since |
| the JMS receiver is enabled, Axis2 will start polling on a JMS queue) |
| </li> |
| <li> |
| Start Synapse using the configuration numbered 264 (repository/conf/sample/synapse_sample_264.xml) |
| <div class="command"> |
| Unix/Linux: sh synapse.sh -sample 264<br/> |
| Windows: synapse.bat -sample 264 |
| </div> |
| </li> |
| </ul> |
| </p> |
| </subsection> |
| <subsection name="Executing the Client"> |
| <p> |
| Send a stock quote request to Synapse over HTTP using the following command. |
| </p> |
| <div class="command">ant stockquote -Daddurl=http://localhost:8280/services/StockQuoteProxy -Dsymbol=MSFT</div> |
| <p> |
| The proxy service will send the message to the JMS queue named SimpleStockQuoteService |
| and wait for a response to arrive. In fact the JMS sender in Synapse will create a temporary |
| queue to start polling on that queue for the response. The address of this queue will |
| be sent on the request as a JMS header. Axis2 server will consumer the request from the |
| queue and place a response on the temporary queue created by Synapse. At this point |
| Synapse will pick up the response and forward it back to the Axis2 client over HTTP. |
| </p> |
| </subsection> |
| </section> |
| <p><a href="../samples.html">Back to Catalog</a></p> |
| </body> |
| </document> |
