001    /** 
002     * 
003     * Copyright 2004 Protique Ltd
004     * 
005     * Licensed under the Apache License, Version 2.0 (the "License"); 
006     * you may not use this file except in compliance with the License. 
007     * You may obtain a copy of the License at 
008     * 
009     * http://www.apache.org/licenses/LICENSE-2.0
010     * 
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS, 
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
014     * See the License for the specific language governing permissions and 
015     * limitations under the License. 
016     * 
017     **/
018    package org.activemq.transport.udp;
019    
020    import EDU.oswego.cs.dl.util.concurrent.SynchronizedBoolean;
021    import org.apache.commons.logging.Log;
022    import org.apache.commons.logging.LogFactory;
023    import org.activemq.transport.TransportServerChannelSupport;
024    
025    import javax.jms.JMSException;
026    import java.net.URI;
027    
028    /**
029     * A UDP implementation of TransportServerChannel
030     *
031     * @version $Revision: 1.1.1.1 $
032     */
033    public class UdpTransportServerChannel extends TransportServerChannelSupport {
034    
035        private static final Log log = LogFactory.getLog(UdpTransportServerChannel.class);
036    
037        private SynchronizedBoolean started;
038    
039        public UdpTransportServerChannel(URI bindAddr) {
040            super(bindAddr);
041            started = new SynchronizedBoolean(false);
042        }
043    
044        /**
045         * start listeneing for events
046         *
047         * @throws JMSException if an error occurs
048         */
049        public void start() throws JMSException {
050            if (started.commit(false, true)) {
051                log.info("ServerChannel at: " + getUrl());
052            }
053        }
054    
055        /**
056         * @return pretty print of this
057         */
058        public String toString() {
059            return "UdpTransportServerChannel@" + getUrl();
060        }
061    
062    }