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 org.apache.camel.Exchange; 020 import org.apache.camel.processor.DelegateProcessor; 021 import org.apache.commons.logging.Log; 022 import org.apache.commons.logging.LogFactory; 023 024 /** 025 * JMX enabled processor that uses the {@link Counter} for instrumenting 026 * processing of exchanges. 027 * 028 * @version $Revision: 772172 $ 029 */ 030 public class InstrumentationProcessor extends DelegateProcessor { 031 032 private static final transient Log LOG = LogFactory.getLog(InstrumentationProcessor.class); 033 private PerformanceCounter counter; 034 private String type; 035 036 public InstrumentationProcessor() { 037 } 038 039 public InstrumentationProcessor(PerformanceCounter counter) { 040 this.counter = counter; 041 } 042 043 @Override 044 public String toString() { 045 return "Instrumention" + (type != null ? ":" + type : "") + "[" + processor + "]"; 046 } 047 048 public void setCounter(PerformanceCounter counter) { 049 this.counter = counter; 050 } 051 052 public void process(Exchange exchange) throws Exception { 053 if (processor != null) { 054 055 long startTime = 0; 056 if (counter != null) { 057 startTime = System.nanoTime(); 058 } 059 060 try { 061 processor.process(exchange); 062 } catch (Exception e) { 063 exchange.setException(e); 064 } 065 066 if (counter != null) { 067 // convert nanoseconds to milliseconds 068 recordTime(exchange, (System.nanoTime() - startTime) / 1000000.0); 069 } 070 } 071 } 072 073 protected void recordTime(Exchange exchange, double duration) { 074 if (LOG.isTraceEnabled()) { 075 LOG.trace("Recording duration: " + duration + " millis for exchange: " + exchange); 076 } 077 078 if (!exchange.isFailed() && exchange.getException() == null) { 079 counter.completedExchange(duration); 080 } else { 081 counter.failedExchange(); 082 } 083 } 084 085 public String getType() { 086 return type; 087 } 088 089 public void setType(String type) { 090 this.type = type; 091 } 092 }