Source Code Cross Referenced for ExpiringSessionRecycler.java in  » Net » mina-2.0.0-M1 » org » apache » mina » common » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Net » mina 2.0.0 M1 » org.apache.mina.common 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *  Licensed to the Apache Software Foundation (ASF) under one
003:         *  or more contributor license agreements.  See the NOTICE file
004:         *  distributed with this work for additional information
005:         *  regarding copyright ownership.  The ASF licenses this file
006:         *  to you under the Apache License, Version 2.0 (the
007:         *  "License"); you may not use this file except in compliance
008:         *  with the License.  You may obtain a copy of the License at
009:         *
010:         *    http://www.apache.org/licenses/LICENSE-2.0
011:         *
012:         *  Unless required by applicable law or agreed to in writing,
013:         *  software distributed under the License is distributed on an
014:         *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015:         *  KIND, either express or implied.  See the License for the
016:         *  specific language governing permissions and limitations
017:         *  under the License.
018:         *
019:         */
020:        package org.apache.mina.common;
021:
022:        import java.net.SocketAddress;
023:        import java.util.ArrayList;
024:        import java.util.List;
025:
026:        import org.apache.mina.util.ExpirationListener;
027:        import org.apache.mina.util.ExpiringMap;
028:
029:        /**
030:         * An {@link IoSessionRecycler} with sessions that time out on inactivity.
031:         *
032:         * TODO Document me.
033:         *
034:         * @author The Apache MINA Project (dev@mina.apache.org)
035:         * @version $Rev: 579942 $, $Date: 2007-09-27 02:32:13 -0600 (Thu, 27 Sep 2007) $
036:         */
037:        public class ExpiringSessionRecycler implements  IoSessionRecycler {
038:            private ExpiringMap<Object, IoSession> sessionMap;
039:
040:            private ExpiringMap<Object, IoSession>.Expirer mapExpirer;
041:
042:            public ExpiringSessionRecycler() {
043:                this (ExpiringMap.DEFAULT_TIME_TO_LIVE);
044:            }
045:
046:            public ExpiringSessionRecycler(int timeToLive) {
047:                this (timeToLive, ExpiringMap.DEFAULT_EXPIRATION_INTERVAL);
048:            }
049:
050:            public ExpiringSessionRecycler(int timeToLive,
051:                    int expirationInterval) {
052:                sessionMap = new ExpiringMap<Object, IoSession>(timeToLive,
053:                        expirationInterval);
054:                mapExpirer = sessionMap.getExpirer();
055:                sessionMap
056:                        .addExpirationListener(new DefaultExpirationListener());
057:            }
058:
059:            public void put(IoSession session) {
060:                mapExpirer.startExpiringIfNotStarted();
061:
062:                Object key = generateKey(session);
063:
064:                if (!sessionMap.containsKey(key)) {
065:                    sessionMap.put(key, session);
066:                }
067:            }
068:
069:            public IoSession recycle(SocketAddress localAddress,
070:                    SocketAddress remoteAddress) {
071:                return sessionMap.get(generateKey(localAddress, remoteAddress));
072:            }
073:
074:            public void remove(IoSession session) {
075:                sessionMap.remove(generateKey(session));
076:            }
077:
078:            public void stopExpiring() {
079:                mapExpirer.stopExpiring();
080:            }
081:
082:            public int getExpirationInterval() {
083:                return sessionMap.getExpirationInterval();
084:            }
085:
086:            public int getTimeToLive() {
087:                return sessionMap.getTimeToLive();
088:            }
089:
090:            public void setExpirationInterval(int expirationInterval) {
091:                sessionMap.setExpirationInterval(expirationInterval);
092:            }
093:
094:            public void setTimeToLive(int timeToLive) {
095:                sessionMap.setTimeToLive(timeToLive);
096:            }
097:
098:            private Object generateKey(IoSession session) {
099:                return generateKey(session.getLocalAddress(), session
100:                        .getRemoteAddress());
101:            }
102:
103:            private Object generateKey(SocketAddress localAddress,
104:                    SocketAddress remoteAddress) {
105:                List<SocketAddress> key = new ArrayList<SocketAddress>(2);
106:                key.add(remoteAddress);
107:                key.add(localAddress);
108:                return key;
109:            }
110:
111:            private class DefaultExpirationListener implements 
112:                    ExpirationListener<IoSession> {
113:                public void expired(IoSession expiredSession) {
114:                    expiredSession.close();
115:                }
116:            }
117:        }
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