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 }