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    package org.apache.directory.server.protocol.shared.transport;
020    
021    import java.net.InetSocketAddress;
022    
023    import org.apache.mina.core.service.IoAcceptor;
024    import org.apache.mina.transport.socket.SocketAcceptor;
025    import org.apache.mina.transport.socket.nio.NioSocketAcceptor;
026    import org.slf4j.Logger;
027    import org.slf4j.LoggerFactory;
028    
029    /**
030     * @org.apache.xbean.XBean
031     * 
032     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
033     * @version $Rev$, $Date$
034     */
035    public class TcpTransport extends AbstractTransport
036    {
037        /** A logger for this class */
038        private static final Logger LOG = LoggerFactory.getLogger( TcpTransport.class );
039    
040        /**
041         * Creates an instance of the TcpTransport class 
042         */
043        public TcpTransport()
044        {
045            super();
046        }
047        
048        
049        /**
050         * Creates an instance of the TcpTransport class on localhost
051         * @param tcpPort The port
052         */
053        public TcpTransport( int tcpPort )
054        {
055            super( null, tcpPort, DEFAULT_NB_THREADS, DEFAULT_BACKLOG_NB );
056            
057            this.acceptor = createAcceptor( null, tcpPort, DEFAULT_NB_THREADS, DEFAULT_BACKLOG_NB );
058            
059            LOG.debug( "TCP Transport created : <*:{},>", tcpPort );
060        }
061        
062        
063        /**
064         * Creates an instance of the TcpTransport class on localhost
065         * @param tcpPort The port
066         * @param nbThreads The number of threads to create in the acceptor
067         */
068        public TcpTransport( int tcpPort, int nbThreads )
069        {
070            super( null, tcpPort, nbThreads, DEFAULT_BACKLOG_NB );
071            
072            this.acceptor = createAcceptor( null, tcpPort, nbThreads, DEFAULT_BACKLOG_NB );
073            
074            LOG.debug( "TCP Transport created : <*:{},>", tcpPort );
075        }
076        
077        
078        /**
079         * Creates an instance of the TcpTransport class 
080         * @param address The address
081         * @param port The port
082         */
083        public TcpTransport( String address, int tcpPort )
084        {
085            super( address, tcpPort, DEFAULT_NB_THREADS, DEFAULT_BACKLOG_NB );
086            this.acceptor = createAcceptor( address, tcpPort, DEFAULT_NB_THREADS, DEFAULT_BACKLOG_NB );
087    
088            LOG.debug( "TCP Transport created : <{}:{}>", address, tcpPort );
089        }
090        
091        
092        /**
093         * Creates an instance of the TcpTransport class on localhost
094         * @param tcpPort The port
095         * @param nbThreads The number of threads to create in the acceptor
096         * @param backlog The queue size for incoming messages, waiting for the
097         * acceptor to be ready
098         */
099        public TcpTransport( int tcpPort, int nbThreads, int backLog )
100        {
101            super( LOCAL_HOST, tcpPort, nbThreads, backLog );
102            this.acceptor = createAcceptor( null, tcpPort, nbThreads, backLog );
103    
104            LOG.debug( "TCP Transport created : <*:{},>", tcpPort );
105        }
106        
107        
108        /**
109         * Creates an instance of the TcpTransport class 
110         * @param address The address
111         * @param tcpPort The port
112         * @param nbThreads The number of threads to create in the acceptor
113         * @param backlog The queue size for incoming messages, waiting for the
114         * acceptor to be ready
115         */
116        public TcpTransport( String address, int tcpPort, int nbThreads, int backLog )
117        {
118            super( address, tcpPort, nbThreads, backLog );
119            this.acceptor = createAcceptor( address, tcpPort, nbThreads, backLog );
120    
121            LOG.debug( "TCP Transport created : <{}:{},>", address, tcpPort );
122        }
123        
124        
125        /**
126         * Initialize the Acceptor if needed
127         */
128        public void init()
129        {
130            acceptor = createAcceptor( getAddress(), getPort(), getNbThreads(), getBackLog() );
131        }
132        
133        
134        /**
135         * Helper method to create an IoAcceptor
136         */
137        private IoAcceptor createAcceptor( String address, int port, int nbThreads, int backLog )
138        {
139            NioSocketAcceptor acceptor = new NioSocketAcceptor( nbThreads );
140            acceptor.setReuseAddress( true );
141            acceptor.setBacklog( backLog );
142            
143            InetSocketAddress socketAddress = null;
144            
145            // The address can be null here, if one want to connect using the wildcard address
146            if ( address == null )
147            {
148                // Create a socket listening on the wildcard address
149                socketAddress = new InetSocketAddress( port );
150            }
151            else
152            {
153                 socketAddress = new InetSocketAddress( address, port );
154            }
155            
156            acceptor.setDefaultLocalAddress( socketAddress );
157            
158            return acceptor;
159        }
160        
161        
162        /**
163         * @return The associated SocketAcceptor
164         */
165        public SocketAcceptor getAcceptor()
166        {
167            if( ( acceptor != null ) && acceptor.isDisposed() )
168            {
169                acceptor = createAcceptor( getAddress(), getPort(), getNbThreads(), getBackLog() );
170            }
171    
172            return acceptor == null ? null : (SocketAcceptor)acceptor;
173        }
174        
175        
176        /**
177         * @see Object#toString()
178         */
179        public String toString()
180        {
181            return "TcpTransport" + super.toString();
182        }
183    }