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    
018    package org.apache.activemq.transport;
019    
020    import java.io.IOException;
021    
022    /**
023     * The thread name filter, modifies the name of the thread during the invocation to a transport.
024     * It appends the remote address, so that a call stuck in a transport method such as socketWrite0
025     * will have the destination information in the thread name.
026     * This is extremely useful for thread dumps when debugging.
027     * To enable this transport, in the transport URI, simpley add<br/>
028     * <code>transport.threadName</code>.<br/>
029     * For example:</br>
030     * <pre><code>
031     * &lt;transportConnector 
032     *     name=&quot;tcp1&quot; 
033     *     uri=&quot;tcp://127.0.0.1:61616?transport.soTimeout=10000&amp;transport.threadName"
034     * /&gt;
035     * </code></pre>
036     * @author Filip Hanik
037     *
038     */
039    public class ThreadNameFilter extends TransportFilter {
040    
041        public ThreadNameFilter(Transport next) {
042            super(next);
043        }
044    
045        @Override
046        public void oneway(Object command) throws IOException {
047            String address =(next!=null?next.getRemoteAddress():null); 
048            if (address!=null) {
049                String name = Thread.currentThread().getName();
050                try {
051                    String sendname = name + " - SendTo:"+address;
052                    Thread.currentThread().setName(sendname);
053                    super.oneway(command);
054                }finally {
055                    Thread.currentThread().setName(name);
056                }
057            } else {
058                super.oneway(command);
059            }
060        }
061        
062        
063    
064    }