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.io.IOException;
038import java.net.InetSocketAddress;
039import java.nio.channels.DatagramChannel;
040
041import org.granite.gravity.AbstractChannel;
042import org.granite.gravity.udp.UdpReceiverFactory;
043import org.granite.logging.Logger;
044
045/**
046 * @author Franck WOLFF
047 */
048public class UdpSharedNIOChannelFactory extends AbstractUdpChannelFactory {
049
050        private static final Logger log = Logger.getLogger(UdpSharedNIOChannelFactory.class);
051
052        private DatagramChannel channel = null;
053        
054        public UdpSharedNIOChannelFactory(UdpReceiverFactory factory) {
055                super(factory); 
056        }
057        
058        @Override
059        public void start() {
060                super.start();
061                
062                int port = factory.getPort();
063                
064                if (port == 0)
065                        log.info("Creating shared UDP channel on port * (any available port)...");
066                else
067                        log.info("Creating shared UDP channel on port %d...", port);
068                        
069                try {
070                        channel = DatagramChannel.open();
071                        channel.socket().setSendBufferSize(factory.getSendBufferSize());
072                        channel.socket().bind(new InetSocketAddress(port));
073                }
074                catch (Exception e) {
075                        throw new RuntimeException("Could not create data channel on port: " + port, e);
076                }
077                
078                log.info("UDP shared channel bound to port: %d", channel.socket().getLocalPort());
079        }
080
081        @Override
082        public void stop() {
083                super.stop();
084                
085                log.info("Closing UDP channel...");
086                
087                if (channel != null) {
088                        try {
089                                channel.close();
090                        }
091                        catch (IOException e) {
092                                log.error(e, "Could not close UDP channel");
093                        }
094                        finally {
095                                channel = null;
096                        }
097                }
098
099                log.info("UDP channel closed.");
100        }
101
102        @Override
103        public UdpChannel newUdpChannel(AbstractChannel gravityChannel, InetSocketAddress address) {
104                return new UdpNIOChannel(this, gravityChannel, channel, address);
105        }
106}