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package org.mule.context.notification; |
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import org.mule.api.MuleContext; |
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import org.mule.api.context.MuleContextAware; |
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import org.mule.api.context.WorkManager; |
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import org.mule.api.context.notification.BlockingServerEvent; |
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import org.mule.api.context.notification.ServerNotification; |
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import org.mule.api.context.notification.ServerNotificationHandler; |
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import org.mule.api.context.notification.ServerNotificationListener; |
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import org.mule.api.lifecycle.Disposable; |
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import org.mule.api.lifecycle.LifecycleException; |
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import org.mule.util.ClassUtils; |
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import java.util.Collection; |
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import java.util.Collections; |
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import java.util.Map; |
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import java.util.Set; |
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import javax.resource.spi.work.Work; |
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import javax.resource.spi.work.WorkException; |
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import javax.resource.spi.work.WorkListener; |
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import edu.emory.mathcs.backport.java.util.Queue; |
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import edu.emory.mathcs.backport.java.util.concurrent.BlockingDeque; |
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import edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingDeque; |
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import edu.emory.mathcs.backport.java.util.concurrent.TimeUnit; |
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import edu.emory.mathcs.backport.java.util.concurrent.atomic.AtomicBoolean; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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68 | 0 | public class ServerNotificationManager implements Work, Disposable, ServerNotificationHandler, MuleContextAware |
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{ |
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public static final String NULL_SUBSCRIPTION = "NULL"; |
72 | 0 | protected Log logger = LogFactory.getLog(getClass()); |
73 | 0 | private boolean dynamic = false; |
74 | 0 | private Configuration configuration = new Configuration(); |
75 | 0 | private AtomicBoolean disposed = new AtomicBoolean(false); |
76 | 0 | private BlockingDeque eventQueue = new LinkedBlockingDeque(); |
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private MuleContext muleContext; |
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public boolean isNotificationDynamic() |
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{ |
81 | 0 | return dynamic; |
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} |
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public void setMuleContext(MuleContext context) |
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{ |
86 | 0 | muleContext = context; |
87 | 0 | } |
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public void setNotificationDynamic(boolean dynamic) |
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{ |
91 | 0 | this.dynamic = dynamic; |
92 | 0 | } |
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public void start(WorkManager workManager, WorkListener workListener) throws LifecycleException |
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{ |
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try |
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{ |
98 | 0 | workManager.scheduleWork(this, WorkManager.INDEFINITE, null, workListener); |
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} |
100 | 0 | catch (WorkException e) |
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{ |
102 | 0 | throw new LifecycleException(e, this); |
103 | 0 | } |
104 | 0 | } |
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public void addInterfaceToType(Class<? extends ServerNotificationListener> iface, Class<? extends ServerNotification> event) |
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{ |
108 | 0 | configuration.addInterfaceToType(iface, event); |
109 | 0 | } |
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public void setInterfaceToTypes(Map<Class<? extends ServerNotificationListener>, Set<Class<? extends ServerNotification>>> interfaceToEvents) throws ClassNotFoundException |
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{ |
113 | 0 | configuration.addAllInterfaceToTypes(interfaceToEvents); |
114 | 0 | } |
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public void addListenerSubscriptionPair(ListenerSubscriptionPair pair) |
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{ |
118 | 0 | configuration.addListenerSubscriptionPair(pair); |
119 | 0 | } |
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public void addListener(ServerNotificationListener<?> listener) |
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{ |
123 | 0 | configuration.addListenerSubscriptionPair(new ListenerSubscriptionPair(listener)); |
124 | 0 | } |
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public void addListenerSubscription(ServerNotificationListener<?> listener, String subscription) |
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{ |
128 | 0 | configuration.addListenerSubscriptionPair(new ListenerSubscriptionPair(listener, subscription)); |
129 | 0 | } |
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public void addAllListenerSubscriptionPairs(Collection<?> pairs) |
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{ |
133 | 0 | configuration.addAllListenerSubscriptionPairs(pairs); |
134 | 0 | } |
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@Deprecated |
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public void setAllListenerSubscriptionPairs(Collection<?> pairs) |
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{ |
143 | 0 | configuration.addAllListenerSubscriptionPairs(pairs); |
144 | 0 | } |
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public void removeListener(ServerNotificationListener<?> listener) |
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{ |
151 | 0 | configuration.removeListener(listener); |
152 | 0 | } |
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public void removeAllListeners(Collection<ServerNotificationListener> listeners) |
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{ |
156 | 0 | configuration.removeAllListeners(listeners); |
157 | 0 | } |
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public void disableInterface(Class<? extends ServerNotificationListener> iface) throws ClassNotFoundException |
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{ |
161 | 0 | configuration.disableInterface(iface); |
162 | 0 | } |
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public void setDisabledInterfaces(Collection<Class<? extends ServerNotificationListener>> interfaces) throws ClassNotFoundException |
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{ |
166 | 0 | configuration.disabledAllInterfaces(interfaces); |
167 | 0 | } |
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public void disableType(Class<? extends ServerNotification> type) throws ClassNotFoundException |
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{ |
171 | 0 | configuration.disableType(type); |
172 | 0 | } |
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public void setDisabledTypes(Collection<Class<? extends ServerNotificationListener>> types) throws ClassNotFoundException |
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{ |
176 | 0 | configuration.disableAllTypes(types); |
177 | 0 | } |
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public boolean isListenerRegistered(ServerNotificationListener listener) |
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{ |
181 | 0 | for (ListenerSubscriptionPair pair : configuration.getListeners()) |
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{ |
183 | 0 | if (pair.getListener().equals(listener)) |
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{ |
185 | 0 | return true; |
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} |
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} |
188 | 0 | return false; |
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} |
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public void fireNotification(ServerNotification notification) |
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{ |
193 | 0 | if (!disposed.get()) |
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{ |
195 | 0 | notification.setMuleContext(muleContext); |
196 | 0 | if (notification instanceof BlockingServerEvent) |
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{ |
198 | 0 | notifyListeners(notification); |
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} |
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else |
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{ |
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try |
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{ |
204 | 0 | eventQueue.put(notification); |
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} |
206 | 0 | catch (InterruptedException e) |
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{ |
208 | 0 | if (!disposed.get()) |
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{ |
210 | 0 | logger.error("Failed to queue notification: " + notification, e); |
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} |
212 | 0 | } |
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} |
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} |
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else |
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{ |
217 | 0 | logger.warn("Notification not enqueued after ServerNotificationManager disposal: " + notification); |
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} |
219 | 0 | } |
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public boolean isNotificationEnabled(Class<? extends ServerNotification> type) |
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{ |
223 | 0 | boolean enabled = false; |
224 | 0 | if (configuration != null) |
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{ |
226 | 0 | Policy policy = configuration.getPolicy(); |
227 | 0 | if (policy != null) |
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{ |
229 | 0 | enabled = policy.isNotificationEnabled(type); |
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} |
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} |
232 | 0 | return enabled; |
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} |
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public void dispose() |
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{ |
237 | 0 | disposed.set(true); |
238 | 0 | configuration = null; |
239 | 0 | } |
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protected void notifyListeners(ServerNotification notification) |
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{ |
243 | 0 | if (!disposed.get()) |
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{ |
245 | 0 | configuration.getPolicy().dispatch(notification); |
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} |
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else |
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{ |
249 | 0 | logger.warn("Notification not delivered after ServerNotificationManager disposal: " + notification); |
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} |
251 | 0 | } |
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public void release() |
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{ |
255 | 0 | dispose(); |
256 | 0 | } |
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public void run() |
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{ |
260 | 0 | while (!disposed.get()) |
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{ |
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try |
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{ |
264 | 0 | ServerNotification notification = (ServerNotification) eventQueue.poll( |
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muleContext.getConfiguration().getDefaultQueueTimeout(), |
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TimeUnit.MILLISECONDS); |
267 | 0 | if (notification != null) |
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{ |
269 | 0 | notifyListeners(notification); |
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} |
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} |
272 | 0 | catch (InterruptedException e) |
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{ |
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275 | 0 | } |
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} |
277 | 0 | } |
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public Queue getEventQueue() { |
283 | 0 | return eventQueue; |
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} |
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static Class toClass(Object value) throws ClassNotFoundException |
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{ |
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Class clazz; |
292 | 0 | if (value instanceof String) |
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{ |
294 | 0 | clazz = ClassUtils.loadClass(value.toString(), value.getClass()); |
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} |
296 | 0 | else if(value instanceof Class) |
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{ |
298 | 0 | clazz = (Class)value; |
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} |
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else |
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{ |
302 | 0 | throw new IllegalArgumentException("Notification types and listeners must be a Class with fully qualified class name. Value is: " + value); |
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} |
304 | 0 | return clazz; |
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} |
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Policy getPolicy() |
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{ |
311 | 0 | return configuration.getPolicy(); |
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} |
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public Map<Class<? extends ServerNotificationListener>, Set<Class<? extends ServerNotification>>> getInterfaceToTypes() |
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{ |
316 | 0 | return Collections.unmodifiableMap(configuration.getInterfaceToTypes()); |
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} |
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public Set<ListenerSubscriptionPair> getListeners() |
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{ |
321 | 0 | return Collections.unmodifiableSet(configuration.getListeners()); |
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} |
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} |