Soap Message Logging in Xfire

Anyone  who has even a little application support experience would know the importance of appropriate logging in the code.If something is not working, it would be a hell at 2 AM to figure out  what happened to request in side the application.That is one of the reasons why people from production support make faces when they hear about dev team is using a new framework. Most of the frameworks, in order to make the performance good, use very little logging. Some frameworks give the option to the developer.If the developer wants to have extensive logging he has to configure. Xifre was one among them. In my current application ,it was important to see the entire Soap request came in and the Soap response went out to the system.

Since Xfire is stax based it never caches the whole message in memory , but luckily  there were options to  configure to log the whole  in/out messages.

First  we need to add a DOMInHandler  to the  request flow.  It reads the incoming stream to a DOM document and sets the stream to  a W3CDOMStreamReader.Then use LoggingHandler to log the message.

Same approach can be used for the out going messages using , DOMOutHandler and LoggingHandler.

//Tell XFire to cache a DOM document for the various in/out flows

service.addInHandler(new org.codehaus.xfire

                        .util.dom.DOMInHandler());
service.addOutHandler(new org.codehaus.xfire

                         .util.dom.DOMOutHandler());

// Add a logging handler to each flow 

service.addInHandler(new org.codehaus.xfire

                            .util.LoggingHandler());
service.addOutHandler(new org.codehaus.xfire

                           .util.LoggingHandler());

In the  XML config  looks like :
&lt;bean id="sampleWS"<br />
          class="org.codehaus.xfire.spring.remoting.XFireExporter"<br />
          abstract="true"><br />
        &lt;property name="style" value="document" /><br />
        &lt;property name="serviceFactory" ref="bindingServiceFactory" /><br />
        &lt;property name="namespace" value="http://sample.com" /><br />
        &lt;property name="xfire" ref="xfire" /><br />
        &lt;property name="inHandlers"><br />
            &lt;list><br />
                &lt;ref bean="inHandler" /><br />
                &lt;ref bean="loggingHandler" /><br />
            &lt;/list><br />
        &lt;/property><br />
        &lt;property name="outHandlers"><br />
            &lt;list><br />
                &lt;ref bean="outHandler" /><br />
                &lt;ref bean="loggingHandler" /><br />
            &lt;/list><br />
        &lt;/property><br />
       <br />
    &lt;/bean><br />
<br />
<br />
 &lt;bean id="inHandler"<br />
          class="org.codehaus.xfire.util.dom.DOMInHandler"<br />
          scope="prototype" /><br />
<br />
    &lt;bean id="outHandler"<br />
          class="org.codehaus.xfire.util.dom.DOMOutHandler"<br />
          scope="prototype" /><br />
<br />
    &lt;bean id="loggingHandler"<br />
          class="org.codehaus.xfire.util.LoggingHandler"<br />
          scope="prototype" />