001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *                               ***
008 *
009 *   Community License: GPL 3.0
010 *
011 *   This file is free software: you can redistribute it and/or modify
012 *   it under the terms of the GNU General Public License as published
013 *   by the Free Software Foundation, either version 3 of the License,
014 *   or (at your option) any later version.
015 *
016 *   This file is distributed in the hope that it will be useful, but
017 *   WITHOUT ANY WARRANTY; without even the implied warranty of
018 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
019 *   GNU General Public License for more details.
020 *
021 *   You should have received a copy of the GNU General Public License
022 *   along with this program. If not, see <http://www.gnu.org/licenses/>.
023 *
024 *                               ***
025 *
026 *   Available Commercial License: GraniteDS SLA 1.0
027 *
028 *   This is the appropriate option if you are creating proprietary
029 *   applications and you are not prepared to distribute and share the
030 *   source code of your application under the GPL v3 license.
031 *
032 *   Please visit http://www.granitedataservices.com/license for more
033 *   details.
034 */
035package org.granite.gravity.udp;
036
037import java.net.DatagramSocket;
038import java.net.InetSocketAddress;
039
040import org.granite.gravity.AbstractChannel;
041import org.granite.gravity.udp.UdpReceiverFactory;
042import org.granite.logging.Logger;
043
044/**
045 * @author Franck WOLFF
046 */
047public class UdpSharedIOChannelFactory extends AbstractUdpChannelFactory {
048
049        private static final Logger log = Logger.getLogger(UdpSharedIOChannelFactory.class);
050
051        private DatagramSocket socket = null;
052        
053        public UdpSharedIOChannelFactory(UdpReceiverFactory factory) {
054                super(factory); 
055        }
056        
057        @Override
058        public void start() {
059                super.start();
060                
061                int port = factory.getPort();
062                
063                if (port == 0)
064                        log.info("Creating shared UDP socket on port * (any available port)...");
065                else
066                        log.info("Creating shared UDP socket on port %d...", port);
067                        
068                try {
069                        socket = new DatagramSocket(port);
070                        socket.setSendBufferSize(factory.getSendBufferSize());
071                }
072                catch (Exception e) {
073                        throw new RuntimeException("Could not create data socket on port: " + port, e);
074                }
075                
076                log.info("UDP shared socket bound to port: %d", socket.getLocalPort());
077        }
078
079        @Override
080        public void stop() {
081                super.stop();
082                
083                log.info("Closing UDP socket...");
084                
085                if (socket != null) {
086                        try {
087                                socket.close();
088                        }
089                        finally {
090                                socket = null;
091                        }
092                }
093
094                log.info("UDP socket closed.");
095        }
096
097        @Override
098        public UdpChannel newUdpChannel(AbstractChannel gravityChannel, InetSocketAddress address) {
099                return new UdpIOChannel(this, gravityChannel, socket, address);
100        }
101}