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Diffstat (limited to 'sca-java-2.x/branches/2.0-Beta3/testing/itest/callback-separatethread/src/main/java/org/apache/tuscany/sca/itest/EventProcessorServiceImpl.java')
-rw-r--r-- | sca-java-2.x/branches/2.0-Beta3/testing/itest/callback-separatethread/src/main/java/org/apache/tuscany/sca/itest/EventProcessorServiceImpl.java | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/sca-java-2.x/branches/2.0-Beta3/testing/itest/callback-separatethread/src/main/java/org/apache/tuscany/sca/itest/EventProcessorServiceImpl.java b/sca-java-2.x/branches/2.0-Beta3/testing/itest/callback-separatethread/src/main/java/org/apache/tuscany/sca/itest/EventProcessorServiceImpl.java deleted file mode 100644 index 0805b96875..0000000000 --- a/sca-java-2.x/branches/2.0-Beta3/testing/itest/callback-separatethread/src/main/java/org/apache/tuscany/sca/itest/EventProcessorServiceImpl.java +++ /dev/null @@ -1,217 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one - * or more contributor license agreements. See the NOTICE file - * distributed with this work for additional information - * regarding copyright ownership. The ASF licenses this file - * to you under the Apache License, Version 2.0 (the - * "License"); you may not use this file except in compliance - * with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, - * software distributed under the License is distributed on an - * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY - * KIND, either express or implied. See the License for the - * specific language governing permissions and limitations - * under the License. - */ - -package org.apache.tuscany.sca.itest; - -import java.util.Map; -import java.util.Timer; -import java.util.TimerTask; -import java.util.UUID; -import java.util.concurrent.ConcurrentHashMap; - -import org.oasisopen.sca.ComponentContext; -import org.oasisopen.sca.RequestContext; -import org.oasisopen.sca.ServiceReference; -import org.oasisopen.sca.annotation.Callback; -import org.oasisopen.sca.annotation.Context; -import org.oasisopen.sca.annotation.Destroy; -import org.oasisopen.sca.annotation.Scope; -import org.oasisopen.sca.annotation.Service; - -/** - * Sample Event Processor Service Implementation - */ -@Service(EventProcessorService.class) -@Scope("COMPOSITE") -public class EventProcessorServiceImpl implements EventProcessorService { - - /** - * Reference to the callback - * - * **NB** This test makes the *DANGEROUS* assumption that there is only one client to - * this component and thus only one callback location. For a "real" COMPOSITE component, - * each client would need to be uniquely identified - this would need to be done using something - * like an ID on the service methods, which could be set by the client and used to identify - * a "session" - */ - private ServiceReference<EventProcessorCallBack> clientCallback = null; - - /** - * Component context (injected) - */ - @Context - protected ComponentContext componentContext; - - /** - * This map contains the call backs for each of the registered Event names - */ - private final Map<String, ServiceReference<EventProcessorCallBack>> eventListeners; - - /** - * The list of all Event Generators we create - */ - private final EventGenerator[] allEventGenerators; - - /** - * Constructor. Starts the Event Generators - */ - public EventProcessorServiceImpl() { - eventListeners = new ConcurrentHashMap<String, ServiceReference<EventProcessorCallBack>>(); - - // We will simulate an Event generator - allEventGenerators = new EventGenerator[2]; - allEventGenerators[0] = new EventGenerator("FAST", 10); // Generate the FAST event every 10ms - allEventGenerators[1] = new EventGenerator("SLOW", 50); // Generate the SLOW event every 50ms - } - - /** - * Registers the client to receive notifications for the specified event - * - * @param aEventName The name of the Event to register - */ - public void registerForEvent(String aEventName) { - // Register for the Event - eventListeners.put(aEventName, getClientCallback()); - - // Send the "register" started event to the client - receiveEvent(aEventName, "SameThread: Registered to receive notifications for " + aEventName); - } - - private ServiceReference<EventProcessorCallBack> getClientCallback() { - if(clientCallback == null) { - RequestContext requestContext = componentContext.getRequestContext(); - clientCallback = requestContext.getCallbackReference(); - } - return clientCallback; - } // end method getClientCallback - - /** - * Unregisters the client so it no longer receives notifications for the specified event - * - * @param aEventName The name of the Event to unregister - */ - public void unregisterForEvent(String aEventName) { - // Send the "register" started event to the client - receiveEvent(aEventName, "SameThread: Unregister from receiving notifications for " + aEventName); - - eventListeners.remove(aEventName); - } - - /** - * This method is called whenever the EventProcessorService receives an Event - * - * @param aEventName The name of the Event received - * @param aEventData The Event data - */ - private void receiveEvent(String aEventName, Object aEventData) { - // Get the listener for the Event - final ServiceReference<EventProcessorCallBack> callback = eventListeners.get(aEventName); - if (callback == null) { - //System.out.println("No registered listeners for " + aEventName); - return; - } - - // Trigger the call back - // System.out.println("Notifying " + callback + " of event " + aEventName); - callback.getService().eventNotification(aEventName, aEventData); - // System.out.println("Done notify " + callback + " of event " + aEventName); - } - - /** - * Shuts down the Event Processor - */ - @Destroy - public void shutdown() { - System.out.println("Shutting down the EventProcessor"); - - // Clear list of call back locations as we don't want to send any more notifications - eventListeners.clear(); - - // Stop the Event Generators - for (EventGenerator generator : allEventGenerators) { - generator.stop(); - } - } - - /** - * Utility class for generating Events - */ - private final class EventGenerator { - /** - * The Timer we are using to generate the events - */ - private final Timer timer = new Timer(); - - /** - * Lock object to ensure that we can cancel the timer cleanly. - */ - private final Object lock = new Object(); - - /** - * Constructor - * - * @param aEventName The name of the Event to generate - * @param frequencyInMilliseconds How frequently we should generate the Events - */ - private EventGenerator(String aEventName, int frequencyInMilliseconds) { - timer.schedule(new EventGeneratorTimerTask(aEventName), - frequencyInMilliseconds, - frequencyInMilliseconds); - } - - /** - * Stop this Event Generator - */ - private void stop() { - synchronized (lock) { - timer.cancel(); - } - } - - /** - * The TimerTask that is invoked by the Timer for the EventGenerator - */ - private final class EventGeneratorTimerTask extends TimerTask { - /** - * The name of the Event we should generate - */ - private final String eventName; - - /** - * Constructor - * - * @param aEventName The name of the Event we should generate - */ - private EventGeneratorTimerTask(String aEventName) { - eventName = aEventName; - } - - /** - * Timer calls this method and it will generate an Event - */ - - public void run() { - synchronized(lock) { - // System.out.println("Generating new event " + eventName); - receiveEvent(eventName, "Separate Thread Notification: " + UUID.randomUUID().toString()); - } - } - } - } -} |