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.concurrent.atomic.AtomicLong;
020    
021    import org.springframework.jmx.export.annotation.ManagedAttribute;
022    import org.springframework.jmx.export.annotation.ManagedOperation;
023    import org.springframework.jmx.export.annotation.ManagedResource;
024    
025    @ManagedResource(description = "PerformanceCounter", currencyTimeLimit = 15)
026    public class PerformanceCounter extends Counter {
027    
028        private AtomicLong numCompleted = new AtomicLong(0L);
029        private long minProcessingTime = -1L;
030        private long maxProcessingTime = -1L;
031        private double totalProcessingTime;
032    
033        @Override
034        @ManagedOperation(description = "Reset counters")
035        public synchronized void reset() {
036            super.reset();
037            numCompleted.set(0L);
038            minProcessingTime = 0L;
039            maxProcessingTime = 0L;
040            totalProcessingTime = 0;
041        }
042    
043        @ManagedAttribute(description = "Number of successful exchanges")
044        public long getNumCompleted() throws Exception {
045            return numCompleted.get();
046        }
047    
048        @ManagedAttribute(description = "Number of failed exchanges")
049        public long getNumFailed() throws Exception {
050            return numExchanges.get() - numCompleted.get();
051        }
052    
053        @ManagedAttribute(description = "Min Processing Time [usec]")
054        public synchronized long getMinProcessingTime() throws Exception {
055            return minProcessingTime;
056        }
057    
058        @ManagedAttribute(description = "Mean Processing Time [usec]")
059        public synchronized long getMeanProcessingTime() throws Exception {
060            long count = numCompleted.get();
061            return count > 0 ? (long)totalProcessingTime / count : 0L;
062        }
063    
064        @ManagedAttribute(description = "Max Processing Time [usec]")
065        public synchronized long getMaxProcessingTime() throws Exception {
066            return maxProcessingTime;
067        }
068    
069        public synchronized void completedExchange(long time) {
070            increment();
071            numCompleted.incrementAndGet();
072            totalProcessingTime += time;
073            if (minProcessingTime < 0 || time < minProcessingTime) {
074                minProcessingTime = time;
075            }
076            if (time > maxProcessingTime) {
077                maxProcessingTime = time;
078            }
079        }
080    
081        public void completedExchange() {
082            numExchanges.incrementAndGet();
083        }
084    }