Description Christian Radspieler 2020-11-12 06:02:10 EST

Exception below spardically appears in our log files.

LifeCycleServiceHandler.synchronizedService catches a RuntimeException, which 
should be rethrown. But in the catch block an NPE is thrown in 
shutdownUISession and the original exception is hidden.

shutdownUISession method should check if uiSession is null, which could be returned by getUISession() method.

Complete stacktrace:
--------------------
java.lang.NullPointerException: null
	at org.eclipse.rap.rwt.internal.service.LifeCycleServiceHandler.shutdownUISession(LifeCycleServiceHandler.java:148)
	at org.eclipse.rap.rwt.internal.service.LifeCycleServiceHandler.synchronizedService(LifeCycleServiceHandler.java:80)
	at org.eclipse.rap.rwt.internal.service.LifeCycleServiceHandler.service(LifeCycleServiceHandler.java:66)
	at org.eclipse.rap.rwt.engine.RWTServlet.handleValidRequest(RWTServlet.java:135)
	at org.eclipse.rap.rwt.engine.RWTServlet.handleRequest(RWTServlet.java:117)
	at org.eclipse.rap.rwt.engine.RWTServlet.doPost(RWTServlet.java:107)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at org.eclipse.rap.rwt.osgi.internal.CutOffContextPathWrapper.service(CutOffContextPathWrapper.java:106)
	at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl$LegacyServlet.service(HttpServiceRuntimeImpl.java:1459)
	at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:159)
	at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:54)
	at com.atoss.atc.httpservice.filter.HSTSFilter.doFilter(HSTSFilter.java:24)
	at org.eclipse.equinox.http.registry.internal.FilterManager$FilterWrapper.doFilter(FilterManager.java:176)
	at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl$LegacyFilterFactory$LegacyFilter.doFilter(HttpServiceRuntimeImpl.java:1418)
	at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:126)
	at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:48)
	at com.atoss.atc.httpservice.filter.CookieFilter.doFilter(CookieFilter.java:22)
	at org.eclipse.equinox.http.registry.internal.FilterManager$FilterWrapper.doFilter(FilterManager.java:176)
	at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl$LegacyFilterFactory$LegacyFilter.doFilter(HttpServiceRuntimeImpl.java:1418)
	at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:126)
	at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:48)
	at com.atoss.atc.httpservice.filter.CacheControlFilter.doFilter(CacheControlFilter.java:25)
	at org.eclipse.equinox.http.registry.internal.FilterManager$FilterWrapper.doFilter(FilterManager.java:176)
	at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl$LegacyFilterFactory$LegacyFilter.doFilter(HttpServiceRuntimeImpl.java:1418)
	at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:126)
	at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:48)
	at com.atoss.atc.httpservice.filter.TraceFilter.doFilter(TraceFilter.java:25)
	at org.eclipse.equinox.http.registry.internal.FilterManager$FilterWrapper.doFilter(FilterManager.java:176)
	at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl$LegacyFilterFactory$LegacyFilter.doFilter(HttpServiceRuntimeImpl.java:1418)
	at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:126)
	at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:48)
	at com.atoss.atc.httpservice.filter.XFrameFilter.doFilter(XFrameFilter.java:24)
	at org.eclipse.equinox.http.registry.internal.FilterManager$FilterWrapper.doFilter(FilterManager.java:176)
	at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl$LegacyFilterFactory$LegacyFilter.doFilter(HttpServiceRuntimeImpl.java:1418)
	at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:126)
	at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:48)
	at com.atoss.atc.core.rap.filter.ClientAuthenticationFilter.doFilter(ClientAuthenticationFilter.java:34)
	at org.eclipse.equinox.http.registry.internal.FilterManager$FilterWrapper.doFilter(FilterManager.java:176)
	at org.eclipse.equinox.http.servlet.internal.HttpServiceRuntimeImpl$LegacyFilterFactory$LegacyFilter.doFilter(HttpServiceRuntimeImpl.java:1418)
	at org.eclipse.equinox.http.servlet.internal.registration.FilterRegistration.doFilter(FilterRegistration.java:126)
	at org.eclipse.equinox.http.servlet.internal.servlet.FilterChainImpl.doFilter(FilterChainImpl.java:48)
	at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:75)
	at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:117)
	at org.eclipse.equinox.http.servlet.internal.servlet.ProxyServlet.dispatch(ProxyServlet.java:147)
	at org.eclipse.equinox.http.servlet.internal.servlet.ProxyServlet.preprocess(ProxyServlet.java:115)
	at org.eclipse.equinox.http.servlet.internal.servlet.ProxyServlet.service(ProxyServlet.java:104)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at org.eclipse.equinox.http.jetty.internal.HttpServerManager$InternalHttpServiceServlet.service(HttpServerManager.java:305)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:763)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:569)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
	at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:767)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1610)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1377)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:507)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1580)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1292)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
	at org.eclipse.jetty.server.Server.handle(Server.java:501)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:383)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:556)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:375)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
	at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:806)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:938)
	at java.base/java.lang.Thread.run(Unknown Source)