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<document>
    <properties>
        <title>Apache Synapse - Sample 302</title>
    </properties>
    <body>
        <section name="Sample 302: Message Injector Task to invoke a Proxy service">
            <div class="xmlConf"><![CDATA[<definitions xmlns="http://ws.apache.org/ns/synapse">
                <task class="org.apache.synapse.startup.tasks.MessageInjector" name="InjectToProxyTask">
                    <property name="soapAction" value="urn:getQuote"/>
                    <property name="format" value="soap11"/>
                    <property name="injectTo" value="proxy"/>
                    <property name="proxyName" value="SampleProxy"/>
                    <property name="message">
                        <m0:getQuote xmlns:m0="http://services.samples">
                            <m0:request>
                                <m0:symbol>IBM</m0:symbol>
                            </m0:request>
                        </m0:getQuote>
                    </property>
                    <trigger interval="5"/>
                </task>
                <proxy name="SampleProxy" transports="http">
                    <target>
                        <inSequence>
                            <log level="custom">
                                <property name="MSG" value="SampleProxy invoked"/>
                            </log>
                            <send>
                                <endpoint>
                                    <address uri="http://localhost:9000/services/SimpleStockQuoteService"/>
                                </endpoint>
                            </send>
                        </inSequence>
                        <outSequence>
                            <log level="custom">
                                <property xmlns:ns="http://services.samples" name="Stock_Quote_on"
                                          expression="//ns:return/ns:lastTradeTimestamp/child::text()"/>
                                <property xmlns:ns="http://services.samples" name="For_the_organization"
                                          expression="//ns:return/ns:name/child::text()"/>
                                <property xmlns:ns="http://services.samples" name="Last_Value"
                                          expression="//ns:return/ns:last/child::text()"/>
                            </log>
                            <drop/>
                        </outSequence>
                    </target>
                </proxy>
            </definitions>]]></div>
            <subsection name="Objective">
                <p>
                    Demonstrate how to schedule tasks to invoke a Proxy service periodically using
                    the MessageInjector task implementation
                </p>
            </subsection>
            <subsection name="Pre-requisites">
                <p>
                    <ul>
                        <li>
                            Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2
                        </li>
                        <li>
                            Start Synapse using the configuration numbered 302 (repository/conf/sample/synapse_sample_302.xml)
                            <div class="command">
                                Unix/Linux: sh synapse.sh -sample 302<br/>
                                Windows: synapse.bat -sample 302
                            </div>
                        </li>
                    </ul>
                </p>
            </subsection>
            <subsection name="Executing the Client">
                <p>
                    The above configuration adds a scheduled task, and a proxy service to the Synapse
                    runtime. The task is configured to run every 5 seconds (note the 'interval'
                    attribute on the 'trigger' element).
                </p>
                <p>
                    In this sample, the proxy service "SampleProxy" will be invoked by the task and
                    then from the proxy service, the injected messages will be sent to the sample
                    Axis2 server, which will send back a response to Synapse. So every 5 seconds you
                    will notice that Axis2 is generating a quote and Synapse is receiving the stock
                    quote response. You will also see the "SampleProxy invoked" message getting
                    logged on the console.
                </p>
            </subsection>
        </section>
        <p><a href="../samples.html">Back to Catalog</a></p>        
    </body>
</document>