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https://issues.apache.org/jira/browse/CXF-2792?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Kulp reassigned CXF-2792:
--------------------------------
Assignee: Daniel Kulp
> Custom Executor for Service object is ignored by the CXF JAX-WS run-time when
> Disaptch.invokeAsync is used
> ----------------------------------------------------------------------------------------------------------
>
> Key: CXF-2792
> URL: https://issues.apache.org/jira/browse/CXF-2792
> Project: CXF
> Issue Type: Bug
> Components: JAX-WS Runtime
> Affects Versions: 2.2.7
> Environment: Standalone CXF-client used on Windows Vista
> Reporter: Leo Romanoff
> Assignee: Daniel Kulp
>
> Hi,
> I'm trying to invoke 10000 external services using invokeAsync from my
> standalone JAX-WS client.
> I set my custom Executor on the Service objects. This executor is a
> ThreadPool with 3 threads. But it looks like it is ignored completely by the
> CXF
> run-time. Instead of an Executor, an instance of AutomaticWorkQueueImpl is
> used.
> BTW, by default, AutomaticWorkQueueImpl is an unbounded queue, so that a few
> thousands threads are created for processing asynchronous responses. This is
> of cause problematic and has a big performance impact. By providing the
> configuration for AutomaticWorkQueueImpl in cxf.xml, the
> AutomaticWorkQueueImpl can be configured to have a required number of
> threads and required maximum capacity.
> So, I did some debugging to see, why and where AutomaticWorkQueueImpl is
> called at all during asynchronous WS invocations using
> Dispatch.invokeAsync().
> This is the stack trace I got:
> Thread [main] (Suspended (entry into method execute in
> AutomaticWorkQueueImpl))
> AutomaticWorkQueueImpl.execute(Runnable) line: 247
> HTTPConduit$WrappedOutputStream.handleResponse() line: 2153
> HTTPConduit$WrappedOutputStream.close() line: 1988
> HTTPConduit(AbstractConduit).close(Message) line: 66
> HTTPConduit.close(Message) line: 639
>
> MessageSenderInterceptor$MessageSenderEndingInterceptor.handleMessage(Message)
> line: 62
> PhaseInterceptorChain.doIntercept(Message) line: 243
> ClientImpl.invoke(ClientCallback, BindingOperationInfo, Object...)
> line: 422
> ClientImpl.invokeWrapped(ClientCallback, QName, Object...) line: 371
> DispatchImpl<T>.invokeAsync(T, AsyncHandler<T>) line: 288
> TestAsyncProviderClient.invokeMyDispatch(Dispatch<Source>, Object,
> AsyncHandler<Source>) line: 298
> TestAsyncProviderClient.testManyAsyncResponses() line: 218
> TestAsyncProviderClient.main(String[]) line: 159
> According to this trace, WS-response processing at the HTTP level is put for
> the execution on a dedicated working queue in the HTTPConduit.handleResponse
> method:
> protected void handleResponse() throws IOException {
>
> handleRetransmits();
>
> if (outMessage == null || outMessage.getExchange() == null ||
> outMessage.getExchange().isSynchronous()) {
> handleResponseInternal();
> } else {
> Runnable runnable = new Runnable() {
> public void run() {
> try {
> handleResponseInternal();
> } catch (Exception e) {
> Message inMessage = new MessageImpl();
> inMessage.setExchange(outMessage.getExchange());
> inMessage.setContent(Exception.class, e);
> incomingObserver.onMessage(inMessage);
> }
> }
> };
> WorkQueueManager mgr =
> outMessage.getExchange().get(Bus.class)
> .getExtension(WorkQueueManager.class);
> AutomaticWorkQueue queue =
> mgr.getNamedWorkQueue("http-conduit");
> if (queue == null) {
> queue = mgr.getAutomaticWorkQueue();
> }
> queue.execute(runnable);
> }
> }
> It is easy to see that Executor set for the JAX-WS Service is not propagated
> down to the HTTP transoport level, which required dedicated configuration for
> AutomaticWorkQueue, be it http-conduit queue or automatic work queue.
> For WS-responses at the user-level, i.e. by means of the JAX-WS AsyncHandler
> handlers, the proper Executor is taken from the Service object.
> See also the discussion on the mailing list:
> http://old.nabble.com/RejectedExecutionException-when-doing-many-invokeAsync-invocations-ts28266640.html
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