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.camel.impl; 018 019 import java.util.concurrent.atomic.AtomicInteger; 020 021 import org.apache.camel.spi.CamelContextNameStrategy; 022 023 /** 024 * A default name strategy which auto assigns a name using a prefix-counter pattern. 025 * 026 * @version 027 */ 028 public class DefaultCamelContextNameStrategy implements CamelContextNameStrategy { 029 030 private static final AtomicInteger CONTEXT_COUNTER = new AtomicInteger(0); 031 private final String prefix; 032 private String name; 033 034 public DefaultCamelContextNameStrategy() { 035 this("camel"); 036 } 037 038 public DefaultCamelContextNameStrategy(String prefix) { 039 this.prefix = prefix; 040 this.name = getNextName(); 041 } 042 043 @Override 044 public String getName() { 045 if (name == null) { 046 name = getNextName(); 047 } 048 return name; 049 } 050 051 @Override 052 public String getNextName() { 053 return prefix + "-" + getNextCounter(); 054 } 055 056 @Override 057 public boolean isFixedName() { 058 return false; 059 } 060 061 public static int getNextCounter() { 062 // we want to start counting from 1, so increment first 063 return CONTEXT_COUNTER.incrementAndGet(); 064 } 065 066 /** 067 * To reset the counter, should only be used for testing purposes. 068 * 069 * @param value the counter value 070 */ 071 public static void setCounter(int value) { 072 CONTEXT_COUNTER.set(value); 073 } 074 075 }