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.management; 018 019 import java.util.Map; 020 021 import org.apache.camel.Processor; 022 import org.apache.camel.model.ProcessorType; 023 import org.apache.camel.spi.InterceptStrategy; 024 025 /** 026 * This strategy class wraps targeted processors with a 027 * {@link InstrumentationProcessor}. Each InstrumentationProcessor has an 028 * embedded {@link PerformanceCounter} for monitoring performance metrics. 029 * <p/> 030 * This class looks up a map to determine which PerformanceCounter should go into the 031 * InstrumentationProcessor for any particular target processor. 032 * 033 * @version $Revision: 759 $ 034 */ 035 public class InstrumentationInterceptStrategy implements InterceptStrategy { 036 037 private Map<ProcessorType, PerformanceCounter> counterMap; 038 039 public InstrumentationInterceptStrategy(Map<ProcessorType, PerformanceCounter> counterMap) { 040 this.counterMap = counterMap; 041 } 042 043 public Processor wrapProcessorInInterceptors(ProcessorType processorType, 044 Processor target) throws Exception { 045 046 Processor retval = target; 047 PerformanceCounter counter = counterMap.get(processorType); 048 049 if (counter != null) { 050 InstrumentationProcessor wrapper = new InstrumentationProcessor(counter); 051 wrapper.setProcessor(target); 052 retval = wrapper; 053 } 054 055 return retval; 056 } 057 058 }