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package org.mule.service; |
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import org.mule.DefaultMuleEvent; |
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import org.mule.RequestContext; |
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import org.mule.api.MuleContext; |
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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.MuleSession; |
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import org.mule.api.component.Component; |
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import org.mule.api.construct.FlowConstruct; |
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import org.mule.api.construct.FlowConstructAware; |
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import org.mule.api.context.MuleContextAware; |
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import org.mule.api.exception.MessagingExceptionHandler; |
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import org.mule.api.lifecycle.Disposable; |
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import org.mule.api.lifecycle.Initialisable; |
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import org.mule.api.lifecycle.InitialisationException; |
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import org.mule.api.lifecycle.LifecycleCallback; |
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import org.mule.api.lifecycle.LifecycleManager; |
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import org.mule.api.lifecycle.LifecycleState; |
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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.model.Model; |
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import org.mule.api.processor.MessageProcessor; |
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import org.mule.api.processor.MessageProcessorChain; |
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import org.mule.api.processor.MessageProcessorChainBuilder; |
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import org.mule.api.routing.MessageInfoMapping; |
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import org.mule.api.routing.OutboundRouterCollection; |
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import org.mule.api.routing.RouterStatisticsRecorder; |
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import org.mule.api.service.Service; |
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import org.mule.api.source.MessageSource; |
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import org.mule.component.simple.PassThroughComponent; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.lifecycle.EmptyLifecycleCallback; |
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import org.mule.lifecycle.processor.ProcessIfStartedWaitIfPausedMessageProcessor; |
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import org.mule.management.stats.RouterStatistics; |
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import org.mule.management.stats.ServiceStatistics; |
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import org.mule.processor.AbstractInterceptingMessageProcessor; |
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import org.mule.processor.chain.DefaultMessageProcessorChainBuilder; |
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import org.mule.routing.MuleMessageInfoMapping; |
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import org.mule.routing.outbound.DefaultOutboundRouterCollection; |
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import org.mule.service.processor.ServiceAsyncRequestReplyRequestor; |
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import org.mule.session.DefaultMuleSession; |
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import org.mule.util.ClassUtils; |
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|
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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|
58 | 0 | public abstract class AbstractService implements Service, MessageProcessor |
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{ |
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|
64 | 0 | protected transient Log logger = LogFactory.getLog(getClass()); |
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protected ServiceStatistics stats; |
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protected Model model; |
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protected MuleContext muleContext; |
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protected ServiceLifecycleManager lifecycleManager; |
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public static final String INITIAL_STATE_STOPPED = "stopped"; |
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public static final String INITIAL_STATE_STARTED = "started"; |
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public static final String INITIAL_STATE_PAUSED = "paused"; |
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protected MessagingExceptionHandler exceptionListener; |
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protected String name; |
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|
93 | 0 | protected MessageProcessor outboundRouter = new DefaultOutboundRouterCollection(); |
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|
95 | 0 | protected MessageSource messageSource = new ServiceCompositeMessageSource(); |
96 | 0 | protected ServiceAsyncReplyCompositeMessageSource asyncReplyMessageSource = new ServiceAsyncReplyCompositeMessageSource(); |
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protected MessageProcessorChain messageProcessorChain; |
99 | 0 | protected MessageInfoMapping messageInfoMapping = new MuleMessageInfoMapping(); |
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105 | 0 | protected String initialState = INITIAL_STATE_STARTED; |
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115 | 0 | protected Component component = new PassThroughComponent(); |
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public AbstractService(MuleContext muleContext) |
118 | 0 | { |
119 | 0 | this.muleContext = muleContext; |
120 | 0 | ((MuleContextAware) component).setMuleContext(muleContext); |
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try |
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{ |
123 | 0 | lifecycleManager = new ServiceLifecycleManager(this, muleContext); |
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} |
125 | 0 | catch (MuleException e) |
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{ |
127 | 0 | throw new MuleRuntimeException(CoreMessages.failedToCreate("Service Lifecycle Manager"), e); |
128 | 0 | } |
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130 | 0 | } |
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public final synchronized void initialise() throws InitialisationException |
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{ |
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try |
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{ |
150 | 0 | lifecycleManager.fireInitialisePhase(new LifecycleCallback<FlowConstruct>() |
151 | 0 | { |
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public void onTransition(String phaseName, FlowConstruct object) throws MuleException |
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{ |
154 | 0 | if (outboundRouter instanceof MuleContextAware) |
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{ |
156 | 0 | ((MuleContextAware) outboundRouter).setMuleContext(muleContext); |
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} |
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|
159 | 0 | if (exceptionListener == null) |
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{ |
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|
163 | 0 | exceptionListener = getModel().getExceptionListener(); |
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} |
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|
166 | 0 | injectFlowConstructMuleContext(messageSource); |
167 | 0 | injectFlowConstructMuleContext(asyncReplyMessageSource); |
168 | 0 | injectFlowConstructMuleContext(messageProcessorChain); |
169 | 0 | injectFlowConstructMuleContext(component); |
170 | 0 | injectFlowConstructMuleContext(exceptionListener); |
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|
172 | 0 | doInitialise(); |
173 | 0 | } |
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}); |
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} |
176 | 0 | catch (InitialisationException e) |
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{ |
178 | 0 | throw e; |
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} |
180 | 0 | catch (MuleException e) |
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{ |
182 | 0 | throw new InitialisationException(e, this); |
183 | 0 | } |
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|
185 | 0 | } |
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|
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public void start() throws MuleException |
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{ |
189 | 0 | if (!isStopped() && initialState.equals(AbstractService.INITIAL_STATE_STOPPED)) |
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{ |
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|
192 | 0 | lifecycleManager.fireStartPhase(new EmptyLifecycleCallback<FlowConstruct>()); |
193 | 0 | lifecycleManager.fireStopPhase(new EmptyLifecycleCallback<FlowConstruct>()); |
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|
195 | 0 | logger.info("Service " + name + " has not been started (initial state = 'stopped')"); |
196 | 0 | return; |
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} |
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|
199 | 0 | lifecycleManager.fireStartPhase(new LifecycleCallback<FlowConstruct>() |
200 | 0 | { |
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public void onTransition(String phaseName, FlowConstruct object) throws MuleException |
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{ |
203 | 0 | doStart(); |
204 | 0 | } |
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}); |
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|
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|
208 | 0 | if ( initialState.equals(AbstractService.INITIAL_STATE_PAUSED)) |
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{ |
210 | 0 | pause(); |
211 | 0 | logger.info("Service " + name + " has been started and paused (initial state = 'paused')"); |
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} |
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|
214 | 0 | } |
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public final void pause() throws MuleException |
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{ |
223 | 0 | lifecycleManager.firePausePhase(new LifecycleCallback<FlowConstruct>() |
224 | 0 | { |
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public void onTransition(String phaseName, FlowConstruct object) throws MuleException |
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{ |
227 | 0 | doPause(); |
228 | 0 | } |
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}); |
230 | 0 | } |
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public final void resume() throws MuleException |
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{ |
238 | 0 | lifecycleManager.fireResumePhase(new LifecycleCallback<FlowConstruct>() |
239 | 0 | { |
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public void onTransition(String phaseName, FlowConstruct object) throws MuleException |
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{ |
242 | 0 | doResume(); |
243 | 0 | } |
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}); |
245 | 0 | } |
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|
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|
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public void stop() throws MuleException |
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{ |
250 | 0 | lifecycleManager.fireStopPhase(new LifecycleCallback<FlowConstruct>() |
251 | 0 | { |
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public void onTransition(String phaseName, FlowConstruct object) throws MuleException |
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{ |
254 | 0 | doStop(); |
255 | 0 | } |
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}); |
257 | 0 | } |
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|
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public final void dispose() |
260 | |
{ |
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|
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try |
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{ |
264 | 0 | if (isStarted() || isPaused()) |
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{ |
266 | 0 | stop(); |
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} |
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|
269 | 0 | lifecycleManager.fireDisposePhase(new LifecycleCallback<FlowConstruct>() |
270 | 0 | { |
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public void onTransition(String phaseName, FlowConstruct object) throws MuleException |
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{ |
273 | 0 | doDispose(); |
274 | 0 | } |
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}); |
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} |
277 | 0 | catch (MuleException e) |
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{ |
279 | 0 | logger.error("Failed to stop service: " + name, e); |
280 | 0 | } |
281 | 0 | } |
282 | |
|
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public LifecycleState getLifecycleState() |
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{ |
285 | 0 | return lifecycleManager.getState(); |
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} |
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public boolean isStarted() |
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{ |
290 | 0 | return lifecycleManager.getState().isStarted(); |
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} |
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public boolean isPaused() |
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{ |
300 | 0 | return lifecycleManager.getCurrentPhase().equals(Pausable.PHASE_NAME); |
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} |
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public boolean isStopped() |
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{ |
305 | 0 | return lifecycleManager.getState().isStopped(); |
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} |
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|
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public boolean isStopping() |
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{ |
310 | 0 | return lifecycleManager.getState().isStopping(); |
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} |
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protected void doPause() throws MuleException |
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{ |
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|
323 | 0 | } |
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protected void doResume() throws MuleException |
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{ |
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|
335 | 0 | } |
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protected void doForceStop() throws MuleException |
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{ |
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|
340 | 0 | } |
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|
342 | |
protected void doStop() throws MuleException |
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{ |
344 | 0 | stopIfStoppable(messageSource); |
345 | 0 | asyncReplyMessageSource.stop(); |
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|
347 | 0 | stopIfStoppable(messageProcessorChain); |
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|
349 | 0 | stopIfStoppable(component); |
350 | 0 | stopIfStoppable(exceptionListener); |
351 | 0 | } |
352 | |
|
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protected void doStart() throws MuleException |
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{ |
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|
356 | 0 | startIfStartable(exceptionListener); |
357 | 0 | startIfStartable(component); |
358 | 0 | startIfStartable(messageProcessorChain); |
359 | |
|
360 | 0 | startIfStartable(messageSource); |
361 | 0 | if (asyncReplyMessageSource.getEndpoints().size() > 0) |
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{ |
363 | 0 | asyncReplyMessageSource.start(); |
364 | |
} |
365 | 0 | } |
366 | |
|
367 | |
protected void doDispose() |
368 | |
{ |
369 | |
|
370 | 0 | disposeIfDisposable(component); |
371 | 0 | disposeIfDisposable(messageProcessorChain); |
372 | 0 | disposeIfDisposable(messageSource); |
373 | 0 | disposeIfDisposable(exceptionListener); |
374 | 0 | muleContext.getStatistics().remove(stats); |
375 | 0 | } |
376 | |
|
377 | |
protected void doInitialise() throws InitialisationException |
378 | |
{ |
379 | |
|
380 | 0 | stats = createStatistics(); |
381 | 0 | stats.setEnabled(muleContext.getStatistics().isEnabled()); |
382 | 0 | muleContext.getStatistics().add(stats); |
383 | 0 | RouterStatistics routerStatistics = null; |
384 | |
|
385 | |
|
386 | 0 | if (outboundRouter instanceof OutboundRouterCollection) |
387 | |
{ |
388 | 0 | routerStatistics = ((OutboundRouterCollection)outboundRouter).getRouterStatistics(); |
389 | |
} |
390 | 0 | if (routerStatistics == null) |
391 | |
{ |
392 | 0 | routerStatistics = new RouterStatistics(RouterStatistics.TYPE_OUTBOUND); |
393 | |
} |
394 | 0 | stats.setOutboundRouterStat(routerStatistics); |
395 | 0 | if (outboundRouter != null && outboundRouter instanceof RouterStatisticsRecorder) |
396 | |
{ |
397 | 0 | ((RouterStatisticsRecorder)outboundRouter).setRouterStatistics(routerStatistics); |
398 | |
} |
399 | 0 | RouterStatistics inboundRouterStatistics = new RouterStatistics(RouterStatistics.TYPE_INBOUND); |
400 | 0 | stats.setInboundRouterStat(inboundRouterStatistics); |
401 | 0 | if (messageSource instanceof RouterStatisticsRecorder) |
402 | |
{ |
403 | 0 | ((RouterStatisticsRecorder) messageSource).setRouterStatistics(inboundRouterStatistics); |
404 | |
} |
405 | 0 | stats.setComponentStat(component.getStatistics()); |
406 | |
|
407 | |
try |
408 | |
{ |
409 | 0 | buildServiceMessageProcessorChain(); |
410 | |
} |
411 | 0 | catch (MuleException e) |
412 | |
{ |
413 | 0 | throw new InitialisationException(e, this); |
414 | 0 | } |
415 | |
|
416 | |
|
417 | 0 | messageSource.setListener(new AbstractInterceptingMessageProcessor() |
418 | 0 | { |
419 | |
public MuleEvent process(MuleEvent event) throws MuleException |
420 | |
{ |
421 | 0 | return messageProcessorChain.process(event); |
422 | |
} |
423 | |
}); |
424 | |
|
425 | 0 | initialiseIfInitialisable(exceptionListener); |
426 | 0 | initialiseIfInitialisable(component); |
427 | 0 | initialiseIfInitialisable(messageProcessorChain); |
428 | 0 | initialiseIfInitialisable(messageSource); |
429 | |
|
430 | 0 | if (asyncReplyMessageSource.getEndpoints().size() > 0) |
431 | |
{ |
432 | 0 | asyncReplyMessageSource.initialise(); |
433 | |
} |
434 | 0 | } |
435 | |
|
436 | |
public void forceStop() throws MuleException |
437 | |
{ |
438 | |
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439 | |
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440 | |
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441 | |
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442 | |
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443 | |
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448 | |
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450 | |
|
451 | 0 | doForceStop(); |
452 | 0 | stop(); |
453 | 0 | } |
454 | |
|
455 | |
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456 | |
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457 | |
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458 | |
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459 | |
|
460 | |
protected void buildServiceMessageProcessorChain() throws MuleException |
461 | |
{ |
462 | 0 | DefaultMessageProcessorChainBuilder builder = new DefaultMessageProcessorChainBuilder(this); |
463 | 0 | builder.setName("Service '" + name + "' Processor Chain"); |
464 | 0 | builder.chain(getServiceStartedAssertingMessageProcessor()); |
465 | 0 | addMessageProcessors(builder); |
466 | 0 | messageProcessorChain = builder.build(); |
467 | 0 | } |
468 | |
|
469 | |
protected MessageProcessor getServiceStartedAssertingMessageProcessor() |
470 | |
{ |
471 | 0 | return new ProcessIfStartedWaitIfPausedMessageProcessor(this, lifecycleManager.getState()); |
472 | |
} |
473 | |
|
474 | |
protected abstract void addMessageProcessors(MessageProcessorChainBuilder builder); |
475 | |
|
476 | |
protected ServiceStatistics createStatistics() |
477 | |
{ |
478 | 0 | return new ServiceStatistics(name); |
479 | |
} |
480 | |
|
481 | |
public ServiceStatistics getStatistics() |
482 | |
{ |
483 | 0 | return stats; |
484 | |
} |
485 | |
|
486 | |
@Deprecated |
487 | |
public void dispatchEvent(MuleEvent event) throws MuleException |
488 | |
{ |
489 | 0 | messageProcessorChain.process(event); |
490 | 0 | } |
491 | |
|
492 | |
@Deprecated |
493 | |
public MuleEvent sendEvent(MuleEvent event) throws MuleException |
494 | |
{ |
495 | 0 | return messageProcessorChain.process(event); |
496 | |
} |
497 | |
|
498 | |
|
499 | |
|
500 | |
|
501 | |
public String getName() |
502 | |
{ |
503 | 0 | return name; |
504 | |
} |
505 | |
|
506 | |
@Override |
507 | |
public String toString() |
508 | |
{ |
509 | 0 | return String.format("%s{%s}", ClassUtils.getSimpleName(this.getClass()), getName()); |
510 | |
} |
511 | |
|
512 | |
|
513 | |
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514 | |
|
515 | |
|
516 | |
|
517 | |
public Model getModel() |
518 | |
{ |
519 | 0 | return model; |
520 | |
} |
521 | |
|
522 | |
public void setModel(Model model) |
523 | |
{ |
524 | 0 | this.model = model; |
525 | 0 | } |
526 | |
|
527 | |
public MessagingExceptionHandler getExceptionListener() |
528 | |
{ |
529 | 0 | return exceptionListener; |
530 | |
} |
531 | |
|
532 | |
public void setExceptionListener(MessagingExceptionHandler exceptionListener) |
533 | |
{ |
534 | 0 | this.exceptionListener = exceptionListener; |
535 | 0 | } |
536 | |
|
537 | |
public MessageSource getMessageSource() |
538 | |
{ |
539 | 0 | return messageSource; |
540 | |
} |
541 | |
|
542 | |
public void setMessageSource(MessageSource inboundMessageSource) |
543 | |
{ |
544 | 0 | this.messageSource = inboundMessageSource; |
545 | 0 | } |
546 | |
|
547 | |
public MessageProcessor getOutboundMessageProcessor() |
548 | |
{ |
549 | 0 | return outboundRouter; |
550 | |
} |
551 | |
|
552 | |
|
553 | |
@Deprecated |
554 | |
public void setMessageProcessor(MessageProcessor processor) |
555 | |
{ |
556 | 0 | setOutboundMessageProcessor(processor); |
557 | 0 | } |
558 | |
|
559 | |
public void setOutboundMessageProcessor(MessageProcessor processor) |
560 | |
{ |
561 | 0 | this.outboundRouter = processor; |
562 | 0 | } |
563 | |
|
564 | |
public ServiceAsyncReplyCompositeMessageSource getAsyncReplyMessageSource() |
565 | |
{ |
566 | 0 | return asyncReplyMessageSource; |
567 | |
} |
568 | |
|
569 | |
public void setAsyncReplyMessageSource(ServiceAsyncReplyCompositeMessageSource asyncReplyMessageSource) |
570 | |
{ |
571 | 0 | this.asyncReplyMessageSource = asyncReplyMessageSource; |
572 | 0 | } |
573 | |
|
574 | |
public String getInitialState() |
575 | |
{ |
576 | 0 | return initialState; |
577 | |
} |
578 | |
|
579 | |
public void setInitialState(String initialState) |
580 | |
{ |
581 | 0 | this.initialState = initialState; |
582 | 0 | } |
583 | |
|
584 | |
public void setName(String name) |
585 | |
{ |
586 | 0 | this.name = name; |
587 | 0 | } |
588 | |
|
589 | |
public Component getComponent() |
590 | |
{ |
591 | 0 | return component; |
592 | |
} |
593 | |
|
594 | |
public void setComponent(Component component) |
595 | |
{ |
596 | 0 | this.component = component; |
597 | 0 | this.component.setFlowConstruct(this); |
598 | 0 | if (component instanceof MuleContextAware) |
599 | |
{ |
600 | 0 | ((MuleContextAware) component).setMuleContext(muleContext); |
601 | |
|
602 | |
} |
603 | 0 | } |
604 | |
|
605 | |
public MuleContext getMuleContext() |
606 | |
{ |
607 | 0 | return muleContext; |
608 | |
} |
609 | |
|
610 | |
public LifecycleManager getLifecycleManager() |
611 | |
{ |
612 | 0 | return lifecycleManager; |
613 | |
} |
614 | |
|
615 | |
public MessageInfoMapping getMessageInfoMapping() |
616 | |
{ |
617 | 0 | return messageInfoMapping; |
618 | |
} |
619 | |
|
620 | |
public void setMessageInfoMapping(MessageInfoMapping messageInfoMapping) |
621 | |
{ |
622 | 0 | this.messageInfoMapping = messageInfoMapping; |
623 | 0 | } |
624 | |
|
625 | |
protected long getAsyncReplyTimeout() |
626 | |
{ |
627 | 0 | if (asyncReplyMessageSource.getTimeout() != null) |
628 | |
{ |
629 | 0 | return asyncReplyMessageSource.getTimeout().longValue(); |
630 | |
} |
631 | |
else |
632 | |
{ |
633 | 0 | return muleContext.getConfiguration().getDefaultResponseTimeout(); |
634 | |
} |
635 | |
} |
636 | |
|
637 | |
protected ServiceAsyncRequestReplyRequestor createAsyncReplyProcessor() |
638 | |
{ |
639 | 0 | ServiceAsyncRequestReplyRequestor asyncReplyMessageProcessor = new ServiceAsyncRequestReplyRequestor(); |
640 | 0 | asyncReplyMessageProcessor.setTimeout(getAsyncReplyTimeout()); |
641 | 0 | asyncReplyMessageProcessor.setFailOnTimeout(asyncReplyMessageSource.isFailOnTimeout()); |
642 | 0 | asyncReplyMessageProcessor.setReplySource(asyncReplyMessageSource); |
643 | 0 | return asyncReplyMessageProcessor; |
644 | |
} |
645 | |
|
646 | |
public MuleEvent process(MuleEvent event) throws MuleException |
647 | |
{ |
648 | 0 | MuleSession calledSession = new DefaultMuleSession(event.getSession(), this); |
649 | 0 | MuleEvent newEvent = new DefaultMuleEvent(event.getMessage(), event.getEndpoint(), event, |
650 | |
calledSession); |
651 | 0 | RequestContext.setEvent(newEvent); |
652 | |
try |
653 | |
{ |
654 | 0 | MuleEvent result = messageProcessorChain.process(newEvent); |
655 | 0 | if (result != null) |
656 | |
{ |
657 | 0 | result.getMessage().release(); |
658 | |
} |
659 | 0 | return result; |
660 | |
} |
661 | 0 | catch (Exception e) |
662 | |
{ |
663 | 0 | return getExceptionListener().handleException(e, newEvent); |
664 | |
} |
665 | |
finally |
666 | |
{ |
667 | 0 | RequestContext.setEvent(event); |
668 | 0 | event.getMessage().release(); |
669 | |
} |
670 | |
} |
671 | |
|
672 | |
public MessageProcessorChain getMessageProcessorChain() |
673 | |
{ |
674 | 0 | return messageProcessorChain; |
675 | |
} |
676 | |
|
677 | |
protected void injectFlowConstructMuleContext(Object candidate) |
678 | |
{ |
679 | 0 | if (candidate instanceof FlowConstructAware) |
680 | |
{ |
681 | 0 | ((FlowConstructAware) candidate).setFlowConstruct(this); |
682 | |
} |
683 | 0 | if (candidate instanceof MuleContextAware) |
684 | |
{ |
685 | 0 | ((MuleContextAware) candidate).setMuleContext(muleContext); |
686 | |
} |
687 | 0 | } |
688 | |
|
689 | |
protected void initialiseIfInitialisable(Object candidate) throws InitialisationException |
690 | |
{ |
691 | 0 | if (candidate instanceof Initialisable) |
692 | |
{ |
693 | 0 | ((Initialisable) candidate).initialise(); |
694 | |
} |
695 | 0 | } |
696 | |
|
697 | |
protected void startIfStartable(Object candidate) throws MuleException |
698 | |
{ |
699 | 0 | if (candidate instanceof Startable) |
700 | |
{ |
701 | 0 | ((Startable) candidate).start(); |
702 | |
} |
703 | 0 | } |
704 | |
|
705 | |
protected void stopIfStoppable(Object candidate) throws MuleException |
706 | |
{ |
707 | 0 | if (candidate instanceof Stoppable) |
708 | |
{ |
709 | 0 | ((Stoppable) candidate).stop(); |
710 | |
} |
711 | 0 | } |
712 | |
|
713 | |
protected void disposeIfDisposable(Object candidate) |
714 | |
{ |
715 | 0 | if (candidate instanceof Disposable) |
716 | |
{ |
717 | 0 | ((Disposable) candidate).dispose(); |
718 | |
} |
719 | 0 | } |
720 | |
|
721 | |
protected void pauseIfPausable(Object candidate) throws MuleException |
722 | |
{ |
723 | 0 | if (candidate instanceof Pausable) |
724 | |
{ |
725 | 0 | ((Pausable) candidate).pause(); |
726 | |
} |
727 | 0 | } |
728 | |
|
729 | |
protected void resumeIfResumable(Object candidate) throws MuleException |
730 | |
{ |
731 | 0 | if (candidate instanceof Resumable) |
732 | |
{ |
733 | 0 | ((Resumable) candidate).resume(); |
734 | |
} |
735 | 0 | } |
736 | |
} |