[CXF-5414] XMLStreamException when using Continuations in versions > 2.7.0 - ASF JIRA

Details

Type: Bug
Status: Closed
Priority: Major
Resolution: Fixed
Affects Version/s: 2.7.1, 2.7.2, 2.7.3, 2.7.4, 2.7.5, 2.7.6, 2.7.7
Fix Version/s: 2.7.9
Component/s: JAX-WS Runtime
Labels:
Environment:

Ubuntu 12.04, Ubuntu 13.04, Java 7, Apache Tomcat 7.0.42

Estimated Complexity:
Unknown

Description

When using Continuation in a Jax web service a stacktrace is printed after every call, the web service does work as expected. If a new web service call is executed while waiting for the stacktrace (in Apache Tomcat the stacktrace appears after about 10 seconds) the web service is very slow. Some calls take up to 8 seconds to complete.

This only occurs with CXF versions above 2.7.0. Tested versions: 2.7.1, 2.7.2, 2.7.3 and 2.7.7.

Example project attached.

Continuation web service code

    public String test() {
        final Continuation continuation = getContinuation();

        if (continuation == null) {
            throw new RuntimeException("Failed to get continuation");
        }

        synchronized (continuation) {
            if(continuation.isNew()) {
                FutureTask futureResponse = new FutureTask<>(new Callable<String>() {
                    @Override
                    public String call() throws Exception {
                        Thread.sleep(1000);
                        String response = "Test response";
                        // the blocking call has finished, we resume the transport thread
                        continuation.resume();

                        return response;
                    }
                });
                taskExecutor.execute(futureResponse);
                continuation.setObject(futureResponse);

                // suspend the transport thread so it can handle other requests
                continuation.suspend(CONTINUATION_TIMEOUT);
                return null;
            } else {
                FutureTask futureTask = (FutureTask) continuation.getObject();
                if(futureTask.isDone()) {
                    try {
                        return (String) futureTask.get();
                    } catch (InterruptedException | ExecutionException e) {
                        e.printStackTrace();
                    }
                } else {
                    continuation.suspend(CONTINUATION_TIMEOUT);
                }
            }
        }
        // unreachable
        return null;
    }

    private Continuation getContinuation() {
        ContinuationProvider provider = (ContinuationProvider) context.getMessageContext().get(ContinuationProvider.class.getName());
        return provider.getContinuation();
    }

Stacktraces

Nov 21, 2013 10:15:53 PM org.apache.cxf.phase.PhaseInterceptorChain doDefaultLogging
WARNING: Interceptor for {http://continuation.example.com/}ContinuationWebServiceService#{http://continuation.example.com/}test has thrown exception, unwinding now
java.lang.RuntimeException: Can't find input stream in message
	at org.apache.cxf.binding.soap.interceptor.ReadHeadersInterceptor.handleMessage(ReadHeadersInterceptor.java:145)
	at org.apache.cxf.binding.soap.interceptor.ReadHeadersInterceptor.handleMessage(ReadHeadersInterceptor.java:62)
	at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
	at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
	at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239)
	at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248)
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
	at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:206)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
	at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:660)
	at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:626)
	at org.apache.catalina.core.AsyncContextImpl$1.run(AsyncContextImpl.java:225)
	at org.apache.catalina.core.AsyncContextImpl.doInternalDispatch(AsyncContextImpl.java:367)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.asyncDispatch(CoyoteAdapter.java:299)
	at org.apache.coyote.http11.AbstractHttp11Processor.asyncDispatch(AbstractHttp11Processor.java:1587)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)

Nov 21, 2013 10:15:53 PM org.apache.cxf.phase.PhaseInterceptorChain doDefaultLogging
WARNING: Interceptor for {http://continuation.example.com/}ContinuationWebServiceService#{http://continuation.example.com/}test has thrown exception, unwinding now
org.apache.cxf.binding.soap.SoapFault: Error writing to XMLStreamWriter.
	at org.apache.cxf.binding.soap.interceptor.SoapOutInterceptor$SoapOutEndingInterceptor.handleMessage(SoapOutInterceptor.java:300)
	at org.apache.cxf.binding.soap.interceptor.SoapOutInterceptor$SoapOutEndingInterceptor.handleMessage(SoapOutInterceptor.java:282)
	at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:272)
	at org.apache.cxf.interceptor.AbstractFaultChainInitiatorObserver.onMessage(AbstractFaultChainInitiatorObserver.java:113)
	at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:333)
	at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
	at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:239)
	at org.apache.cxf.transport.servlet.ServletController.invokeDestination(ServletController.java:248)
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:222)
	at org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:153)
	at org.apache.cxf.transport.servlet.CXFNonSpringServlet.invoke(CXFNonSpringServlet.java:167)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:286)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:206)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
	at org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:262)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
	at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:660)
	at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:626)
	at org.apache.catalina.core.AsyncContextImpl$1.run(AsyncContextImpl.java:225)
	at org.apache.catalina.core.AsyncContextImpl.doInternalDispatch(AsyncContextImpl.java:367)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.asyncDispatch(CoyoteAdapter.java:299)
	at org.apache.coyote.http11.AbstractHttp11Processor.asyncDispatch(AbstractHttp11Processor.java:1587)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:583)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:722)
Caused by: javax.xml.stream.XMLStreamException: No open start element, when trying to write end element
	at com.ctc.wstx.sw.BaseStreamWriter.throwOutputError(BaseStreamWriter.java:1522)
	at com.ctc.wstx.sw.BaseStreamWriter.reportNwfStructure(BaseStreamWriter.java:1551)
	at com.ctc.wstx.sw.BaseNsStreamWriter.doWriteEndTag(BaseNsStreamWriter.java:648)
	at com.ctc.wstx.sw.BaseNsStreamWriter.writeEndElement(BaseNsStreamWriter.java:280)
	at org.apache.cxf.binding.soap.interceptor.SoapOutInterceptor$SoapOutEndingInterceptor.handleMessage(SoapOutInterceptor.java:291)
	... 35 more

XMLStreamException when using Continuations in versions > 2.7.0

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