001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of Granite Data Services.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or modify
008 * it under the terms of the GNU Library General Public License as published by
009 * the Free Software Foundation; either version 2 of the License, or (at your
010 * option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful, but
013 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015 * for more details.
016 *
017 * You should have received a copy of the GNU Library General Public License
018 * along with this library; if not, see <http://www.gnu.org/licenses/>.
019 */
020 package org.granite.client.messaging.transport;
021
022 import java.util.ArrayList;
023 import java.util.List;
024
025 import org.granite.client.configuration.Configuration;
026 import org.granite.client.messaging.transport.TransportStatusHandler.LogEngineStatusHandler;
027 import org.granite.client.messaging.transport.TransportStatusHandler.NoopEngineStatusHandler;
028
029 /**
030 * @author Franck WOLFF
031 */
032 public abstract class AbstractTransport<C> implements Transport {
033
034 private volatile C context;
035 private volatile Configuration config;
036 private volatile TransportStatusHandler statusHandler = new LogEngineStatusHandler();
037
038 protected final List<TransportStopListener> stopListeners = new ArrayList<TransportStopListener>();
039
040 @SuppressWarnings("unchecked")
041 @Override
042 public void setContext(Object context) {
043 this.context = (C)context;
044 }
045
046 @Override
047 public C getContext() {
048 return context;
049 }
050
051 @Override
052 public void setConfiguration(Configuration config) {
053 this.config = config;
054 }
055
056 @Override
057 public Configuration getConfiguration() {
058 return config;
059 }
060
061 @Override
062 public void setStatusHandler(TransportStatusHandler statusHandler) {
063 if (statusHandler == null)
064 statusHandler = new NoopEngineStatusHandler();
065 this.statusHandler = statusHandler;
066 }
067
068 @Override
069 public TransportStatusHandler getStatusHandler() {
070 return statusHandler;
071 }
072
073 @Override
074 public void addStopListener(TransportStopListener listener) {
075 synchronized (stopListeners) {
076 if (!stopListeners.contains(listener))
077 stopListeners.add(listener);
078 }
079 }
080
081 @Override
082 public boolean removeStopListener(TransportStopListener listener) {
083 synchronized (stopListeners) {
084 return stopListeners.remove(listener);
085 }
086 }
087
088 @Override
089 public void stop() {
090 synchronized (stopListeners) {
091 for (TransportStopListener listener : stopListeners) {
092 try {
093 listener.onStop(this);
094 }
095 catch (Exception e) {
096 }
097 }
098 stopListeners.clear();
099 }
100 }
101 }