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 */
035 package org.granite.gravity.udp;
036
037 import java.io.IOException;
038 import java.net.InetSocketAddress;
039 import java.nio.channels.DatagramChannel;
040
041 import org.granite.gravity.AbstractChannel;
042 import org.granite.gravity.udp.UdpReceiverFactory;
043 import org.granite.logging.Logger;
044
045 /**
046 * @author Franck WOLFF
047 */
048 public 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 }