1 /* 2 * Copyright 2009 Red Hat, Inc. 3 * 4 * Red Hat licenses this file to you under the Apache License, version 2.0 5 * (the "License"); you may not use this file except in compliance with the 6 * License. You may obtain a copy of the License at: 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations 14 * under the License. 15 */ 16 package org.jboss.netty.util; 17 18 /** 19 * Overrides the thread name proposed by {@link ThreadRenamingRunnable}. 20 * 21 * @author <a href="http://www.jboss.org/netty/">The Netty Project</a> 22 * @author <a href="http://gleamynode.net/">Trustin Lee</a> 23 * @version $Rev: 2080 $, $Date: 2010-01-26 18:04:19 +0900 (Tue, 26 Jan 2010) $ 24 */ 25 public interface ThreadNameDeterminer { 26 27 /** 28 * {@link ThreadNameDeterminer} that accepts the proposed thread name 29 * as is. 30 */ 31 ThreadNameDeterminer PROPOSED = new ThreadNameDeterminer() { 32 public String determineThreadName(String currentThreadName, 33 String proposedThreadName) throws Exception { 34 return proposedThreadName; 35 } 36 }; 37 38 /** 39 * {@link ThreadNameDeterminer} that rejects the proposed thread name and 40 * retains the current one. 41 */ 42 ThreadNameDeterminer CURRENT = new ThreadNameDeterminer() { 43 public String determineThreadName(String currentThreadName, 44 String proposedThreadName) throws Exception { 45 return null; 46 } 47 }; 48 49 /** 50 * Overrides the thread name proposed by {@link ThreadRenamingRunnable}. 51 * 52 * @param currentThreadName the current thread name 53 * @param proposedThreadName the proposed new thread name 54 * @return the actual new thread name. 55 * If {@code null} is returned, the proposed thread name is 56 * discarded (i.e. no rename). 57 */ 58 String determineThreadName(String currentThreadName, String proposedThreadName) throws Exception; 59 }