001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  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    package org.apache.activemq.transport.multicast;
018    
019    import java.net.SocketAddress;
020    import java.nio.ByteBuffer;
021    
022    import org.apache.activemq.command.Command;
023    import org.apache.activemq.command.Endpoint;
024    import org.apache.activemq.transport.udp.DatagramEndpoint;
025    import org.apache.activemq.transport.udp.DatagramHeaderMarshaller;
026    
027    /**
028     * 
029     * 
030     */
031    public class MulticastDatagramHeaderMarshaller extends DatagramHeaderMarshaller {
032    
033        private final byte[] localUriAsBytes;
034    
035        public MulticastDatagramHeaderMarshaller(String localUri) {
036            this.localUriAsBytes = localUri.getBytes();
037        }
038    
039        public Endpoint createEndpoint(ByteBuffer readBuffer, SocketAddress address) {
040            int size = readBuffer.getInt();
041            byte[] data = new byte[size];
042            readBuffer.get(data);
043            return new DatagramEndpoint(new String(data), address);
044        }
045    
046        public void writeHeader(Command command, ByteBuffer writeBuffer) {
047            writeBuffer.putInt(localUriAsBytes.length);
048            writeBuffer.put(localUriAsBytes);
049            super.writeHeader(command, writeBuffer);
050        }
051    
052    }