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| |
| <document> |
| <properties> |
| <title>Apache Synapse - Sample 500</title> |
| </properties> |
| <body> |
| <section name="Sample 500: Introduction to Eventing"> |
| <div class="xmlConf"><definitions xmlns="http://ws.apache.org/ns/synapse"> |
| |
| <eventSource name="SampleEventSource"> |
| <subscriptionManager |
| class="org.apache.synapse.eventing.managers.DefaultInMemorySubscriptionManager"> |
| <!--property name="registryURL" value="http://localhost:8180/wso2registry"/> |
| <property name="username" value="admin"/> |
| <property name="password" value="admin"/--> |
| <property name="topicHeaderName" value="Topic"/> |
| <property name="topicHeaderNS" value="http://apache.org/aip"/> |
| </subscriptionManager> |
| </eventSource> |
| |
| <sequence name="PublicEventSource"> |
| <log level="full"/> |
| <eventPublisher eventSourceName="SampleEventSource"/> |
| </sequence> |
| |
| <proxy name="EventingProxy"> |
| <target inSequence="PublicEventSource"/> |
| </proxy> |
| |
| </definitions></div> |
| <subsection name="Objective"> |
| <p> |
| Demonstrate the use of the Eventing functionality built into Synapse |
| </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 500 (repository/conf/sample/synapse_sample_500.xml) |
| <div class="command"> |
| Unix/Linux: sh synapse.sh -sample 500<br/> |
| Windows: synapse.bat -sample 500 |
| </div> |
| </li> |
| </ul> |
| </p> |
| </subsection> |
| <subsection name="Executing the Client"> |
| <p> |
| In this sample an event source is creted based on the provided configuration. Event |
| subscriber subscribes for the events, Event sender publishes events and the |
| SimpleStockQuoteService acts as the Event Sink. |
| </p> |
| <p> |
| First, invoke the sample client (Subscriber) as follows. |
| </p> |
| <div class="command">ant eventsubscriber</div> |
| <p> |
| This will create a new subscription with the SimpleStockQuoteService deployed on |
| the sample Axis2 server acting as the sink. Whenever a new event is published, |
| SimpleStockQuoteService will receive a message with that event. You should see a |
| message like this on the client console confirming the subscription. |
| </p> |
| <div class="consoleOutput">[java] Subscription identifier: urn:uuid:6989F66706E73C69F5259116575749162017010321</div> |
| <p> |
| You will need this identifier to modify the subscription in the next steps. Now, |
| invoke the client (Sender) as follows. |
| </p> |
| <div class="command">ant eventsender</div> |
| <p> |
| This will send a placeOrder request to the EventingProxy. You should see a |
| message in the Synapse logs. Note the presence of the following SOAP header |
| in the request. |
| </p> |
| <div class="consoleOutput"><aip:Topic xmlns:aip="http://apache.org/aip">synapse/event/test</aip:Topic></div> |
| <p> |
| Since there is a single subscription with SimpleStockQuoteService as the sink, |
| Synapse will send the message to the sample Axis2 server and you should see the |
| following message in its logs: |
| </p> |
| <div class="consoleOutput">Accepted order for : 1000 stocks of GOOG at $ 10.1</div> |
| <p> |
| You can also send various other WS-Eventing messages from the sample client to |
| modify the subscription details. To get the current status of the subscription, |
| invoke the client as follows. |
| </p> |
| <div class="command">ant eventsubscriber -Dmode=getstatus -Didentifier=<i><identifier></i></div> |
| <p> |
| To renew the subscription, invoke the client as follows. |
| </p> |
| <div class="command">ant eventsubscriber -Dmode=renew -Didentifier=<i><identifier></i> -Dexpires=2012-12-31T21:07:00.000-08:00</div> |
| <p> |
| Finally, in order to unsubscribe, use the following command. |
| </p> |
| <div class="command">ant eventsubscriber -Dmode=unsubscribe -Didentifier=<i><identifier></i></div> |
| </subsection> |
| </section> |
| <p><a href="../samples.html">Back to Catalog</a></p> |
| </body> |
| </document> |
