001    /**
002     * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.kernel.nio.intraband.cache;
016    
017    import com.liferay.portal.kernel.cache.CacheListener;
018    import com.liferay.portal.kernel.cache.CacheListenerScope;
019    import com.liferay.portal.kernel.cache.PortalCache;
020    import com.liferay.portal.kernel.io.Deserializer;
021    import com.liferay.portal.kernel.io.Serializer;
022    import com.liferay.portal.kernel.log.Log;
023    import com.liferay.portal.kernel.log.LogFactoryUtil;
024    import com.liferay.portal.kernel.nio.intraband.Datagram;
025    import com.liferay.portal.kernel.nio.intraband.Intraband;
026    import com.liferay.portal.kernel.nio.intraband.RegistrationReference;
027    import com.liferay.portal.kernel.nio.intraband.SystemDataType;
028    
029    import java.io.Serializable;
030    
031    import java.nio.ByteBuffer;
032    
033    import java.util.ArrayList;
034    import java.util.Collection;
035    import java.util.List;
036    
037    /**
038     * @author Shuyang Zhou
039     */
040    public class IntrabandPortalCache
041                    <K extends Serializable, V extends Serializable>
042            implements PortalCache<K, V>, Serializable {
043    
044            public IntrabandPortalCache(
045                    String name, RegistrationReference registrationReference) {
046    
047                    _name = name;
048                    _registrationReference = registrationReference;
049    
050                    _intraband = registrationReference.getIntraband();
051    
052                    SystemDataType systemDataType = SystemDataType.PORTAL_CACHE;
053    
054                    _portalCacheType = systemDataType.getValue();
055            }
056    
057            @Override
058            public void destroy() {
059                    Serializer serializer = _createSerializer(
060                            PortalCacheActionType.DESTROY);
061    
062                    _intraband.sendDatagram(
063                            _registrationReference,
064                            Datagram.createRequestDatagram(
065                                    _portalCacheType, serializer.toByteBuffer()));
066            }
067    
068            @Override
069            public Collection<V> get(Collection<K> keys) {
070                    Serializer serializer = _createSerializer(
071                            PortalCacheActionType.GET_BULK);
072    
073                    serializer.writeObject((Serializable)keys);
074    
075                    try {
076                            return (Collection<V>)_syncSend(serializer.toByteBuffer());
077                    }
078                    catch (Exception e) {
079                            if (_log.isWarnEnabled()) {
080                                    _log.warn("Unable to bulk get, coverting to cache miss", e);
081                            }
082    
083                            List<V> values = new ArrayList<V>(keys.size());
084    
085                            for (int i = 0; i < keys.size(); i++) {
086                                    values.add(null);
087                            }
088    
089                            return values;
090                    }
091            }
092    
093            @Override
094            public V get(K key) {
095                    Serializer serializer = _createSerializer(PortalCacheActionType.GET);
096    
097                    serializer.writeObject(key);
098    
099                    try {
100                            return _syncSend(serializer.toByteBuffer());
101                    }
102                    catch (Exception e) {
103                            if (_log.isWarnEnabled()) {
104                                    _log.warn("Unable to get, coverting to cache miss", e);
105                            }
106    
107                            return null;
108                    }
109            }
110    
111            @Override
112            public String getName() {
113                    return _name;
114            }
115    
116            @Override
117            public void put(K key, V value) {
118                    Serializer serializer = _createSerializer(PortalCacheActionType.PUT);
119    
120                    serializer.writeObject(key);
121                    serializer.writeObject(value);
122    
123                    _intraband.sendDatagram(
124                            _registrationReference,
125                            Datagram.createRequestDatagram(
126                                    _portalCacheType, serializer.toByteBuffer()));
127            }
128    
129            @Override
130            public void put(K key, V value, int timeToLive) {
131                    Serializer serializer = _createSerializer(
132                            PortalCacheActionType.PUT_TTL);
133    
134                    serializer.writeObject(key);
135                    serializer.writeObject(value);
136                    serializer.writeInt(timeToLive);
137    
138                    _intraband.sendDatagram(
139                            _registrationReference,
140                            Datagram.createRequestDatagram(
141                                    _portalCacheType, serializer.toByteBuffer()));
142            }
143    
144            @Override
145            public void registerCacheListener(CacheListener<K, V> cacheListener) {
146            }
147    
148            @Override
149            public void registerCacheListener(
150                    CacheListener<K, V> cacheListener,
151                    CacheListenerScope cacheListenerScope) {
152            }
153    
154            @Override
155            public void remove(K key) {
156                    Serializer serializer = _createSerializer(PortalCacheActionType.REMOVE);
157    
158                    serializer.writeObject(key);
159    
160                    _intraband.sendDatagram(
161                            _registrationReference,
162                            Datagram.createRequestDatagram(
163                                    _portalCacheType, serializer.toByteBuffer()));
164            }
165    
166            @Override
167            public void removeAll() {
168                    Serializer serializer = _createSerializer(
169                            PortalCacheActionType.REMOVE_ALL);
170    
171                    _intraband.sendDatagram(
172                            _registrationReference,
173                            Datagram.createRequestDatagram(
174                                    _portalCacheType, serializer.toByteBuffer()));
175            }
176    
177            @Override
178            public void unregisterCacheListener(CacheListener<K, V> cacheListener) {
179            }
180    
181            @Override
182            public void unregisterCacheListeners() {
183            }
184    
185            private Serializer _createSerializer(
186                    PortalCacheActionType portalCacheActionType) {
187    
188                    Serializer serializer = new Serializer();
189    
190                    serializer.writeInt(portalCacheActionType.ordinal());
191                    serializer.writeString(_name);
192    
193                    return serializer;
194            }
195    
196            private <T extends Serializable> T _syncSend(ByteBuffer byteBuffer)
197                    throws Exception {
198    
199                    Datagram responseDatagram = _intraband.sendSyncDatagram(
200                            _registrationReference,
201                            Datagram.createRequestDatagram(_portalCacheType, byteBuffer));
202    
203                    Deserializer deserializer = new Deserializer(
204                            responseDatagram.getDataByteBuffer());
205    
206                    return deserializer.readObject();
207            }
208    
209            private static Log _log = LogFactoryUtil.getLog(IntrabandPortalCache.class);
210    
211            private final Intraband _intraband;
212            private final String _name;
213            private final byte _portalCacheType;
214            private final RegistrationReference _registrationReference;
215    
216    }