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package org.mule.transport; |
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|
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import org.mule.api.MuleException; |
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import org.mule.api.MuleMessage; |
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import org.mule.api.MuleRuntimeException; |
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import org.mule.api.config.MuleConfiguration; |
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import org.mule.api.context.WorkManager; |
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import org.mule.api.endpoint.ImmutableEndpoint; |
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import org.mule.api.lifecycle.CreateException; |
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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.LifecycleException; |
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import org.mule.api.lifecycle.LifecycleState; |
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import org.mule.api.lifecycle.LifecycleStateEnabled; |
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import org.mule.api.lifecycle.StartException; |
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import org.mule.api.retry.RetryCallback; |
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import org.mule.api.retry.RetryContext; |
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import org.mule.api.retry.RetryPolicyTemplate; |
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import org.mule.api.transport.Connectable; |
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import org.mule.api.transport.Connector; |
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import org.mule.api.transport.MuleMessageFactory; |
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import org.mule.config.i18n.CoreMessages; |
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import org.mule.config.i18n.Message; |
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import org.mule.config.i18n.MessageFactory; |
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import org.mule.context.notification.ConnectionNotification; |
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import org.mule.util.ClassUtils; |
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import org.mule.util.concurrent.WaitableBoolean; |
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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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|
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public abstract class AbstractTransportMessageHandler<O> implements Connectable, LifecycleStateEnabled |
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{ |
47 | 0 | protected transient Log logger = LogFactory.getLog(getClass()); |
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|
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protected ImmutableEndpoint endpoint; |
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protected final AbstractConnector connector; |
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protected RetryPolicyTemplate retryTemplate; |
52 | 0 | protected MuleMessageFactory muleMessageFactory = null; |
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|
54 | 0 | protected final WaitableBoolean connected = new WaitableBoolean(false); |
55 | 0 | protected final WaitableBoolean connecting = new WaitableBoolean(false); |
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|
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|
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|
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|
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|
62 | 0 | protected volatile boolean startOnConnect = false; |
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|
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protected ConnectableLifecycleManager<O> lifecycleManager; |
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|
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public AbstractTransportMessageHandler(ImmutableEndpoint endpoint) |
67 | 0 | { |
68 | 0 | this.endpoint = endpoint; |
69 | 0 | this.connector = (AbstractConnector) endpoint.getConnector(); |
70 | 0 | this.lifecycleManager = createLifecycleManager(); |
71 | 0 | } |
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|
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protected abstract ConnectableLifecycleManager<O> createLifecycleManager(); |
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|
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public LifecycleState getLifecycleState() |
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{ |
77 | 0 | return lifecycleManager.getState(); |
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} |
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|
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protected void disposeAndLogException() |
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{ |
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try |
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{ |
84 | 0 | dispose(); |
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} |
86 | 0 | catch (Throwable t) |
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{ |
88 | 0 | logger.error("Could not dispose of the message dispatcher!", t); |
89 | 0 | } |
90 | 0 | } |
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|
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public boolean validate() |
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{ |
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|
95 | 0 | return !getLifecycleState().isDisposed(); |
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} |
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|
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public void activate() |
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{ |
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|
101 | 0 | } |
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|
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public void passivate() |
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{ |
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|
106 | 0 | } |
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|
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public void initialise() throws InitialisationException |
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{ |
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try |
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{ |
112 | 0 | lifecycleManager.fireInitialisePhase(new LifecycleCallback<O>() |
113 | 0 | { |
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public void onTransition(String phaseName, O object) throws MuleException |
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{ |
116 | 0 | initializeRetryPolicy(); |
117 | 0 | initializeMessageFactory(); |
118 | 0 | doInitialise(); |
119 | 0 | } |
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}); |
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} |
122 | 0 | catch (InitialisationException e) |
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{ |
124 | 0 | throw e; |
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} |
126 | 0 | catch (MuleException e) |
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{ |
128 | 0 | throw new InitialisationException(e, this); |
129 | 0 | } |
130 | |
|
131 | 0 | } |
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|
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protected void initializeRetryPolicy() |
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{ |
135 | 0 | if (endpoint.getRetryPolicyTemplate() != null) |
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{ |
137 | 0 | retryTemplate = endpoint.getRetryPolicyTemplate(); |
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} |
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else |
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{ |
141 | 0 | retryTemplate = connector.getRetryPolicyTemplate(); |
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} |
143 | 0 | } |
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|
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|
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|
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|
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protected void initializeMessageFactory() throws InitialisationException |
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{ |
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try |
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{ |
153 | 0 | muleMessageFactory = connector.getMuleMessageFactory(); |
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} |
155 | 0 | catch (CreateException ce) |
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{ |
157 | 0 | Message message = MessageFactory.createStaticMessage(ce.getMessage()); |
158 | 0 | throw new InitialisationException(message, ce, this); |
159 | 0 | } |
160 | 0 | } |
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|
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|
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public synchronized void dispose() |
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{ |
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try |
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{ |
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try |
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{ |
171 | 0 | disconnect(); |
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} |
173 | 0 | catch (Exception e) |
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{ |
175 | 0 | logger.warn(e.getMessage(), e); |
176 | 0 | } |
177 | 0 | if (isStarted()) |
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{ |
179 | 0 | stop(); |
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} |
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|
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|
183 | 0 | lifecycleManager.fireDisposePhase(new LifecycleCallback<O>() { |
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public void onTransition(String phaseName, O object) throws MuleException |
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{ |
186 | 0 | doDispose(); |
187 | 0 | } |
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}); |
189 | |
} |
190 | 0 | catch (Exception e) |
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{ |
192 | 0 | logger.warn(e.getMessage(), e); |
193 | 0 | } |
194 | 0 | } |
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|
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public Connector getConnector() |
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{ |
198 | 0 | return connector; |
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} |
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|
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public ImmutableEndpoint getEndpoint() |
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{ |
203 | 0 | return endpoint; |
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} |
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|
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public final synchronized void connect() throws Exception |
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{ |
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|
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|
210 | 0 | if (connected.get() || connecting.get()) |
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{ |
212 | 0 | return; |
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} |
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|
215 | 0 | if (getLifecycleState().isDisposed()) |
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{ |
217 | 0 | throw new IllegalStateException( |
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"Requester/dispatcher has been disposed; cannot connect to resource:" + this); |
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} |
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|
221 | 0 | if (!connecting.compareAndSet(false, true)) |
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{ |
223 | 0 | return; |
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} |
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|
226 | 0 | if (logger.isDebugEnabled()) |
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{ |
228 | 0 | logger.debug("Connecting: " + this); |
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} |
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|
231 | 0 | retryTemplate.execute( |
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new RetryCallback() |
233 | 0 | { |
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public void doWork(RetryContext context) throws Exception |
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{ |
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try |
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{ |
238 | 0 | doConnect(); |
239 | 0 | connected.set(true); |
240 | 0 | connecting.set(false); |
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|
242 | 0 | if (logger.isDebugEnabled()) |
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{ |
244 | 0 | logger.debug("Connected: " + getWorkDescription()); |
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} |
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|
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|
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|
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|
250 | 0 | if (startOnConnect) |
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{ |
252 | 0 | start(); |
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} |
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} |
255 | 0 | catch (Exception e) |
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{ |
257 | 0 | if (logger.isDebugEnabled()) |
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{ |
259 | 0 | logger.debug("exception in doWork", e); |
260 | |
} |
261 | 0 | throw e; |
262 | 0 | } |
263 | 0 | } |
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|
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public String getWorkDescription() |
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{ |
267 | 0 | return getConnectionDescription(); |
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} |
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}, |
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getWorkManager() |
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); |
272 | 0 | } |
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|
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public RetryContext validateConnection(RetryContext retryContext) |
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{ |
276 | 0 | retryContext.setOk(); |
277 | 0 | return retryContext; |
278 | |
} |
279 | |
|
280 | |
public final synchronized void disconnect() throws Exception |
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{ |
282 | 0 | if (!connected.get()) |
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{ |
284 | 0 | return; |
285 | |
} |
286 | |
|
287 | 0 | if (logger.isDebugEnabled()) |
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{ |
289 | 0 | logger.debug("Disconnecting: " + this); |
290 | |
} |
291 | |
|
292 | 0 | this.doDisconnect(); |
293 | 0 | connected.set(false); |
294 | |
|
295 | 0 | if (logger.isDebugEnabled()) |
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{ |
297 | 0 | logger.debug("Disconnected: " + this); |
298 | |
} |
299 | 0 | connector.fireNotification(new ConnectionNotification(this, getConnectEventId(endpoint), |
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ConnectionNotification.CONNECTION_DISCONNECTED)); |
301 | 0 | } |
302 | |
|
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protected String getConnectEventId(ImmutableEndpoint endpoint) |
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{ |
305 | 0 | return connector.getName() + ".dispatcher(" + endpoint.getEndpointURI().getUri() + ")"; |
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} |
307 | |
|
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public final boolean isConnected() |
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{ |
310 | 0 | return connected.get(); |
311 | |
} |
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|
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public final boolean isConnecting() |
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{ |
315 | 0 | return connecting.get(); |
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} |
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|
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protected boolean isDoThreading() |
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{ |
320 | 0 | return connector.getDispatcherThreadingProfile().isDoThreading(); |
321 | |
} |
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|
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|
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|
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|
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public String getConnectionDescription() |
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{ |
328 | 0 | return "endpoint.outbound." + endpoint.getEndpointURI().toString(); |
329 | |
} |
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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|
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public final void start() throws MuleException |
342 | |
{ |
343 | |
|
344 | 0 | if (!connected.get() && !connecting.get()) |
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{ |
346 | 0 | connectAndThenStart(); |
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} |
348 | 0 | else if (connecting.get() && isDoStartMustFollowDoConnect()) |
349 | |
{ |
350 | |
try |
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{ |
352 | 0 | callDoStartWhenItIsConnected(); |
353 | |
} |
354 | 0 | catch (InterruptedException e) |
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{ |
356 | 0 | throw new StartException(CoreMessages.failedToStart("Connectable: " + this), e, this); |
357 | 0 | } |
358 | |
} |
359 | |
else |
360 | |
{ |
361 | |
try |
362 | |
{ |
363 | 0 | lifecycleManager.fireStartPhase(new LifecycleCallback<O>() |
364 | 0 | { |
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public void onTransition(String phaseName, O object) throws MuleException |
366 | |
{ |
367 | 0 | doStart(); |
368 | 0 | } |
369 | |
}); |
370 | |
} |
371 | 0 | catch (MuleException e) |
372 | |
{ |
373 | 0 | throw e; |
374 | |
} |
375 | 0 | catch (Exception e) |
376 | |
{ |
377 | 0 | throw new StartException(CoreMessages.failedToStart("Connectable: " + this), e, this); |
378 | 0 | } |
379 | |
} |
380 | 0 | } |
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|
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|
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|
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|
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|
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|
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|
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|
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protected void connectAndThenStart() throws LifecycleException |
390 | |
{ |
391 | 0 | startOnConnect = true; |
392 | |
|
393 | |
|
394 | |
try |
395 | |
{ |
396 | 0 | connect(); |
397 | |
} |
398 | 0 | catch (Exception e) |
399 | |
{ |
400 | 0 | throw new LifecycleException(e, this); |
401 | 0 | } |
402 | 0 | } |
403 | |
|
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|
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|
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|
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|
408 | |
|
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|
410 | |
|
411 | |
|
412 | |
|
413 | |
protected void callDoStartWhenItIsConnected() throws InterruptedException, MuleException |
414 | |
{ |
415 | |
try |
416 | |
{ |
417 | 0 | connected.whenTrue(new Runnable() |
418 | 0 | { |
419 | |
public void run() |
420 | |
{ |
421 | |
try |
422 | |
{ |
423 | 0 | lifecycleManager.fireStartPhase(new LifecycleCallback<O>() |
424 | 0 | { |
425 | |
public void onTransition(String phaseName, O object) throws MuleException |
426 | |
{ |
427 | 0 | doStart(); |
428 | 0 | } |
429 | |
}); |
430 | |
} |
431 | 0 | catch (MuleException e) |
432 | |
{ |
433 | 0 | throw new MuleRuntimeException( |
434 | |
CoreMessages.createStaticMessage("wrapper exception for a MuleException"), e); |
435 | 0 | } |
436 | 0 | } |
437 | |
}); |
438 | |
} |
439 | 0 | catch (MuleRuntimeException e) |
440 | |
{ |
441 | 0 | if (e.getCause() instanceof MuleException) |
442 | |
{ |
443 | 0 | throw (MuleException) e.getCause(); |
444 | |
} |
445 | |
else |
446 | |
{ |
447 | 0 | throw e; |
448 | |
} |
449 | 0 | } |
450 | 0 | } |
451 | |
|
452 | |
public final void stop() throws MuleException |
453 | |
{ |
454 | |
try |
455 | |
{ |
456 | 0 | if (connected.get()) |
457 | |
{ |
458 | 0 | disconnect(); |
459 | |
} |
460 | |
} |
461 | 0 | catch (Exception e) |
462 | |
{ |
463 | 0 | logger.error(e.getMessage(), e); |
464 | 0 | } |
465 | |
|
466 | 0 | lifecycleManager.fireStopPhase(new LifecycleCallback<O>() |
467 | 0 | { |
468 | |
public void onTransition(String phaseName, O object) throws MuleException |
469 | |
{ |
470 | |
try |
471 | |
{ |
472 | 0 | doStop(); |
473 | |
} |
474 | 0 | catch (MuleException e) |
475 | |
{ |
476 | 0 | logger.error(e.getMessage(), e); |
477 | 0 | } |
478 | 0 | } |
479 | |
}); |
480 | |
|
481 | 0 | } |
482 | |
|
483 | |
protected void doInitialise() throws InitialisationException |
484 | |
{ |
485 | |
|
486 | 0 | } |
487 | |
|
488 | |
protected void doDispose() |
489 | |
{ |
490 | |
|
491 | 0 | } |
492 | |
|
493 | |
protected void doConnect() throws Exception |
494 | |
{ |
495 | |
|
496 | 0 | } |
497 | |
|
498 | |
protected void doDisconnect() throws Exception |
499 | |
{ |
500 | |
|
501 | 0 | } |
502 | |
|
503 | |
protected void doStart() throws MuleException |
504 | |
{ |
505 | |
|
506 | 0 | } |
507 | |
|
508 | |
protected void doStop() throws MuleException |
509 | |
{ |
510 | |
|
511 | 0 | } |
512 | |
|
513 | |
@Override |
514 | |
public String toString() |
515 | |
{ |
516 | 0 | final StringBuffer sb = new StringBuffer(80); |
517 | 0 | sb.append(ClassUtils.getSimpleName(this.getClass())); |
518 | 0 | sb.append("{this=").append(Integer.toHexString(System.identityHashCode(this))); |
519 | 0 | sb.append(", endpoint=").append(endpoint.getEndpointURI()); |
520 | 0 | sb.append(", disposed=").append(getLifecycleState().isDisposed()); |
521 | 0 | sb.append('}'); |
522 | 0 | return sb.toString(); |
523 | |
} |
524 | |
|
525 | |
|
526 | |
|
527 | |
public void setEndpoint(ImmutableEndpoint endpoint) |
528 | |
{ |
529 | 0 | if (endpoint == null) |
530 | |
{ |
531 | 0 | throw new IllegalArgumentException("Endpoint cannot be null"); |
532 | |
} |
533 | 0 | this.endpoint = endpoint; |
534 | 0 | } |
535 | |
|
536 | |
abstract protected WorkManager getWorkManager() throws MuleException; |
537 | |
|
538 | |
public boolean isStarted() |
539 | |
{ |
540 | 0 | return getLifecycleState().isStarted(); |
541 | |
} |
542 | |
|
543 | |
|
544 | |
|
545 | |
|
546 | |
|
547 | |
|
548 | |
protected MuleMessageFactory createMuleMessageFactory() throws CreateException |
549 | |
{ |
550 | 0 | return connector.createMuleMessageFactory(); |
551 | |
} |
552 | |
|
553 | |
|
554 | |
|
555 | |
|
556 | |
|
557 | |
|
558 | |
public MuleMessage createMuleMessage(Object transportMessage, MuleMessage previousMessage, |
559 | |
String encoding) throws MuleException |
560 | |
{ |
561 | |
try |
562 | |
{ |
563 | 0 | return muleMessageFactory.create(transportMessage, previousMessage, encoding); |
564 | |
} |
565 | 0 | catch (Exception e) |
566 | |
{ |
567 | 0 | throw new CreateException(CoreMessages.failedToCreate("MuleMessage"), e); |
568 | |
} |
569 | |
} |
570 | |
|
571 | |
|
572 | |
|
573 | |
|
574 | |
|
575 | |
public MuleMessage createMuleMessage(Object transportMessage, String encoding) throws MuleException |
576 | |
{ |
577 | |
try |
578 | |
{ |
579 | 0 | return muleMessageFactory.create(transportMessage, encoding); |
580 | |
} |
581 | 0 | catch (Exception e) |
582 | |
{ |
583 | 0 | throw new CreateException(CoreMessages.failedToCreate("MuleMessage"), e, this); |
584 | |
} |
585 | |
} |
586 | |
|
587 | |
|
588 | |
|
589 | |
|
590 | |
|
591 | |
|
592 | |
|
593 | |
public MuleMessage createMuleMessage(Object transportMessage) throws MuleException |
594 | |
{ |
595 | 0 | String encoding = endpoint.getMuleContext().getConfiguration().getDefaultEncoding(); |
596 | 0 | return createMuleMessage(transportMessage, encoding); |
597 | |
} |
598 | |
|
599 | |
|
600 | |
|
601 | |
|
602 | |
|
603 | |
|
604 | |
protected MuleMessage createNullMuleMessage() throws MuleException |
605 | |
{ |
606 | 0 | return createMuleMessage(null); |
607 | |
} |
608 | |
|
609 | |
|
610 | |
|
611 | |
|
612 | |
protected boolean isDoStartMustFollowDoConnect() |
613 | |
{ |
614 | 0 | return false; |
615 | |
} |
616 | |
} |