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package org.mule.processor; |
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import org.mule.DefaultMuleEvent; |
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import org.mule.api.MessagingException; |
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import org.mule.api.MuleEvent; |
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import org.mule.api.MuleException; |
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import org.mule.api.MuleRuntimeException; |
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import org.mule.api.config.ThreadingProfile; |
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import org.mule.api.context.WorkManager; |
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import org.mule.api.context.WorkManagerSource; |
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import org.mule.api.endpoint.OutboundEndpoint; |
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import org.mule.api.lifecycle.Startable; |
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import org.mule.api.lifecycle.Stoppable; |
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import org.mule.api.processor.MessageProcessor; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.interceptor.ProcessingTimeInterceptor; |
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import org.mule.work.AbstractMuleEventWork; |
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import org.mule.work.MuleWorkManager; |
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import javax.resource.spi.work.WorkEvent; |
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import javax.resource.spi.work.WorkListener; |
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public class AsyncInterceptingMessageProcessor extends AbstractInterceptingMessageProcessor |
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implements WorkListener, Startable, Stoppable |
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{ |
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protected WorkManagerSource workManagerSource; |
44 | 0 | protected boolean doThreading = true; |
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protected WorkManager workManager; |
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|
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public AsyncInterceptingMessageProcessor(WorkManagerSource workManagerSource) |
48 | 0 | { |
49 | 0 | this.workManagerSource = workManagerSource; |
50 | 0 | } |
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|
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@Deprecated |
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public AsyncInterceptingMessageProcessor(WorkManagerSource workManagerSource, boolean doThreading) |
54 | 0 | { |
55 | 0 | this.workManagerSource = workManagerSource; |
56 | 0 | this.doThreading = doThreading; |
57 | 0 | } |
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|
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public AsyncInterceptingMessageProcessor(ThreadingProfile threadingProfile, |
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String name, |
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int shutdownTimeout) |
62 | 0 | { |
63 | 0 | this.doThreading = threadingProfile.isDoThreading(); |
64 | 0 | workManager = threadingProfile.createWorkManager(name, shutdownTimeout); |
65 | 0 | workManagerSource = new WorkManagerSource() |
66 | 0 | { |
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public WorkManager getWorkManager() throws MuleException |
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{ |
69 | 0 | return workManager; |
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} |
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}; |
72 | 0 | } |
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|
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public void start() throws MuleException |
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{ |
76 | 0 | if (workManager != null) |
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{ |
78 | 0 | workManager.start(); |
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} |
80 | 0 | } |
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|
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public void stop() throws MuleException |
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{ |
84 | 0 | if (workManager != null) |
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{ |
86 | 0 | workManager.dispose(); |
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} |
88 | 0 | } |
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|
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public MuleEvent process(MuleEvent event) throws MuleException |
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{ |
92 | 0 | if (next == null) |
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{ |
94 | 0 | return event; |
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} |
96 | 0 | else if (isProcessAsync(event)) |
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{ |
98 | 0 | processNextAsync(event); |
99 | 0 | return null; |
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} |
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else |
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{ |
103 | 0 | MuleEvent response = processNext(event); |
104 | 0 | return response; |
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} |
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} |
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|
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protected MuleEvent processNextTimed(MuleEvent event) throws MuleException |
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{ |
110 | 0 | if (next == null) |
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{ |
112 | 0 | return event; |
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} |
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else |
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{ |
116 | 0 | if (logger.isTraceEnabled()) |
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{ |
118 | 0 | logger.trace("Invoking next MessageProcessor: '" + next.getClass().getName() + "' "); |
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} |
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|
121 | 0 | if (next instanceof OutboundEndpoint) |
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{ |
123 | 0 | event = new DefaultMuleEvent(event.getMessage(), (OutboundEndpoint) next, event.getSession()); |
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} |
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|
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MuleEvent response; |
127 | 0 | if (event.getFlowConstruct() != null) |
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{ |
129 | 0 | response = new ProcessingTimeInterceptor(next, event.getFlowConstruct()).process(event); |
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} |
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else |
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{ |
133 | 0 | response = next.process(event); |
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} |
135 | 0 | return response; |
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} |
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} |
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protected boolean isProcessAsync(MuleEvent event) throws MessagingException |
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{ |
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|
142 | 0 | if (event.getEndpoint().getTransactionConfig().isTransacted()) |
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{ |
144 | 0 | throw new MessagingException(CoreMessages.asyncDoesNotSupportTransactions(), event); |
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} |
146 | 0 | return doThreading; |
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} |
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protected void processNextAsync(MuleEvent event) throws MuleException |
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{ |
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try |
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{ |
153 | 0 | workManagerSource.getWorkManager().scheduleWork(new AsyncMessageProcessorWorker(event), |
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WorkManager.INDEFINITE, null, this); |
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} |
156 | 0 | catch (Exception e) |
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{ |
158 | 0 | new MessagingException(CoreMessages.errorSchedulingMessageProcessorForAsyncInvocation(next), |
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event, e); |
160 | 0 | } |
161 | 0 | } |
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|
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public void workAccepted(WorkEvent event) |
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{ |
165 | 0 | this.handleWorkException(event, "workAccepted"); |
166 | 0 | } |
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|
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public void workRejected(WorkEvent event) |
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{ |
170 | 0 | this.handleWorkException(event, "workRejected"); |
171 | 0 | } |
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|
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public void workStarted(WorkEvent event) |
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{ |
175 | 0 | this.handleWorkException(event, "workStarted"); |
176 | 0 | } |
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public void workCompleted(WorkEvent event) |
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{ |
180 | 0 | this.handleWorkException(event, "workCompleted"); |
181 | 0 | } |
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|
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protected void handleWorkException(WorkEvent event, String type) |
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{ |
185 | 0 | if (event == null) |
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{ |
187 | 0 | return; |
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} |
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|
190 | 0 | Throwable e = event.getException(); |
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|
192 | 0 | if (e == null) |
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{ |
194 | 0 | return; |
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} |
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|
197 | 0 | if (e.getCause() != null) |
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{ |
199 | 0 | e = e.getCause(); |
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} |
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|
202 | 0 | logger.error("Work caused exception on '" + type + "'. Work being executed was: " |
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+ event.getWork().toString()); |
204 | 0 | throw new MuleRuntimeException(CoreMessages.errorInvokingMessageProcessorAsynchronously(next), e); |
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} |
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class AsyncMessageProcessorWorker extends AbstractMuleEventWork |
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{ |
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public AsyncMessageProcessorWorker(MuleEvent event) |
210 | 0 | { |
211 | 0 | super(event); |
212 | 0 | } |
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|
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@Override |
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protected void doRun() |
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{ |
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try |
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{ |
219 | 0 | processNextTimed(event); |
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} |
221 | 0 | catch (MuleException e) |
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{ |
223 | 0 | event.getFlowConstruct().getExceptionListener().handleException(e, event); |
224 | 0 | } |
225 | 0 | } |
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} |
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} |