NPE thrown by AxisEngine.send in service side of axis2 binding for async
callbacks
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Key: TUSCANY-1003
URL: http://issues.apache.org/jira/browse/TUSCANY-1003
Project: Tuscany
Issue Type: Bug
Components: Java SCA Axis Binding
Affects Versions: Java-Mx
Reporter: Ignacio Silva-Lepe
Fix For: Java-Mx
I'm seeing an NPE thrown by AxisEngine.send in the service side of the axis2
binding for async callbacks. The trace is below. My current guess is that this
may have something to do with the pass-by-value interceptor but I have not
delved to deeply into the possible cause. For now I am leaving this in the Java
SCA Axis binding component but that may change depending on the actual reason
for the exception.
org.apache.tuscany.binding.axis2.Axis2BindingRunTimeException: java.lang.NullPoi
nterException
at org.apache.tuscany.binding.axis2.Axis2ServiceCallbackTargetInvoker.in
vokeTarget(Axis2ServiceCallbackTargetInvoker.java:78)
at org.apache.tuscany.binding.axis2.Axis2ServiceCallbackTargetInvoker.in
voke(Axis2ServiceCallbackTargetInvoker.java:90)
at org.apache.tuscany.core.wire.InvokerInterceptor.invoke(InvokerInterce
ptor.java:44)
at org.apache.tuscany.core.databinding.impl.PassByValueInterceptor.invok
e(PassByValueInterceptor.java:65)
at org.apache.tuscany.core.wire.SynchronousBridgingInterceptor.invoke(Sy
nchronousBridgingInterceptor.java:41)
at org.apache.tuscany.core.databinding.impl.DataBindingInteceptor.invoke
(DataBindingInteceptor.java:70)
at org.apache.tuscany.spi.wire.AbstractOutboundInvocationHandler.invoke(
AbstractOutboundInvocationHandler.java:91)
at org.apache.tuscany.core.wire.jdk.JDKCallbackInvocationHandler.invoke(
JDKCallbackInvocationHandler.java:103)
at $Proxy21.getGreetingsCallback(Unknown Source)
at helloworld.HelloWorldImpl.getGreetings(HelloWorldImpl.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.tuscany.core.implementation.java.JavaTargetInvoker.invokeT
arget(JavaTargetInvoker.java:90)
at org.apache.tuscany.spi.extension.TargetInvokerExtension.invoke(Target
InvokerExtension.java:67)
at org.apache.tuscany.core.wire.InvokerInterceptor.invoke(InvokerInterce
ptor.java:44)
at org.apache.tuscany.core.databinding.impl.PassByValueInterceptor.invok
e(PassByValueInterceptor.java:65)
at org.apache.tuscany.core.wire.NonBlockingBridgingInterceptor$1.run(Non
BlockingBridgingInterceptor.java:79)
at org.apache.tuscany.core.services.work.jsr237.Jsr237WorkScheduler$Jsr2
37Work.run(Jsr237WorkScheduler.java:212)
at org.apache.tuscany.core.services.work.jsr237.workmanager.ThreadPoolWo
rkManager$DecoratingWork.run(ThreadPoolWorkManager.java:206)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExec
utor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:675)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.NullPointerException
at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(Internal
OutputBuffer.java:746)
at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:433)
at org.apache.coyote.http11.InternalOutputBuffer.flush(InternalOutputBuf
fer.java:304)
at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:
991)
at org.apache.coyote.Response.action(Response.java:182)
at org.apache.catalina.connector.OutputBuffer.doFlush(OutputBuffer.java:
322)
at org.apache.catalina.connector.OutputBuffer.flush(OutputBuffer.java:29
3)
at org.apache.catalina.connector.CoyoteOutputStream.flush(CoyoteOutputSt
ream.java:97)
at sun.nio.cs.StreamEncoder$CharsetSE.implFlush(StreamEncoder.java:410)
at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:152)
at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:213)
at java.io.BufferedWriter.flush(BufferedWriter.java:236)
at com.ctc.wstx.sw.BufferingXmlWriter.flush(BufferingXmlWriter.java:184)
at com.ctc.wstx.sw.BaseStreamWriter.flush(BaseStreamWriter.java:269)
at org.apache.axiom.om.impl.MTOMXMLStreamWriter.flush(MTOMXMLStreamWrite
r.java:119)
at org.apache.axiom.om.impl.llom.OMNodeImpl.serializeAndConsume(OMNodeIm
pl.java:412)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.sendUsingO
utputStream(CommonsHTTPTransportSender.java:275)
at org.apache.axis2.transport.http.CommonsHTTPTransportSender.invoke(Com
monsHTTPTransportSender.java:209)
at org.apache.axis2.engine.AxisEngine.send(AxisEngine.java:670)
at org.apache.tuscany.binding.axis2.Axis2ServiceCallbackTargetInvoker.in
vokeTarget(Axis2ServiceCallbackTargetInvoker.java:70)
... 23 more
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