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Continuing problem with XTS WS-T tests in AS trunk/CXF 2.2.9
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reply from <a href="http://community.jboss.org/people/adinn">Andrew Dinn</a> in <i>JBoss Web Services CXF</i> - <a href="http://community.jboss.org/message/553969#553969">View the full discussion</a>
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<div class="jive-rendered-content"><p>Hi Jim,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I am not sure what is different in my code that makes request.getScheme() fail with an NPE while your code works ok but I think it is just luck.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I traced execution through a test case and it appears that the incoming message relates to a valid request. Because this is a one way message there is a handover of control in ContextUtils at line 416</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><blockquote class="jive-quote"><span style="font-family: courier new,courier;">416                     inMessage.getInterceptorChain().pause();
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                        // ... and resume on executor thread<br/>                        getExecutor(inMessage).execute(new Runnable() {<br/>                            public void run() {<br/>421                             inMessage.getInterceptorChain().resume();<br/>                            }
</span><p style="min-height: 8pt; height: 8pt; padding: 0px;"><span style="font-family: courier new,courier;"> </span> </p></blockquote><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I checked the request by stopping at 416 and looking up the stack to find the request. The HttpServletRequest object is actually a facade object which indirects to an underlying catalina connector request. It had a name like "Current Servlet stack for thread http-127.0.0.1-8080-1 [S] ActivationService [org.jboss.wsf.stack.cxf.CXFServletExt]". request.getScheme() worked on this object without a NPE.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>I picked control up again in the debugger at 421 but, of course, there was no servlet method up the stack where I coudl locate the request. So, I proceeded to step through the code until the ServiceInvokerInterceptor was called. In AbstractInvoker.invoke() the web service context is set up</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><blockquote class="jive-quote"><p><span style="font-family: courier new,courier;">public Object invoke(Exchange exchange, Object o)<br/>   {<br/>      // set up the webservice request context <br/>      WrappedMessageContext ctx = new WrappedMessageContext(exchange.getInMessage(), Scope.APPLICATION);<br/><br/>      Map<String, Object> handlerScopedStuff = removeHandlerProperties(ctx);<br/><br/>      WebServiceContextImpl.setMessageContext(ctx);<br/><br/>101   Object retObj = null;</span></p></blockquote><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>At line 101 I evaluated ctx.get("HTTP.REQUEST") and got another facade hiding a catalina connector request with name "Current Servlet stack for thread default-workqueue-2". However all the fields of this catalina connector request appear to be uninitialised and getScheme() returns null. So, this looks to me like the request is coming out of a thread local and it is pot luck whether the object behind the facade has been initialised or not. IN your tests it may be that a previous call has set values in this object.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>regards,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Andrew Dinn</p></div>
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