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    
022    /**
023     * JMX enabled processor that uses the {@link Counter} for instrumenting
024     * processing of exchanges.
025     */
026    public class InstrumentationProcessor extends DelegateProcessor {
027    
028        private PerformanceCounter counter;
029    
030        public InstrumentationProcessor(PerformanceCounter counter) {
031            this.counter = counter;
032        }
033    
034        public InstrumentationProcessor() {
035        }
036    
037        public void setCounter(PerformanceCounter counter) {
038            this.counter = counter;
039        }
040    
041        public void process(Exchange exchange) throws Exception {
042            long startTime = System.nanoTime();
043            super.process(exchange);
044            if (counter != null) {
045                if (!exchange.isFailed()) {
046                    // convert nanoseconds to milliseconds
047                    counter.completedExchange((System.nanoTime() - startTime) / 1000000.0);
048                } else {
049                    counter.completedExchange();
050                }
051            }
052        }
053    }