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.Date;
020    import java.util.concurrent.atomic.AtomicLong;
021    
022    import org.springframework.jmx.export.annotation.ManagedAttribute;
023    import org.springframework.jmx.export.annotation.ManagedOperation;
024    import org.springframework.jmx.export.annotation.ManagedResource;
025    
026    @ManagedResource(description = "PerformanceCounter", currencyTimeLimit = 15)
027    public class PerformanceCounter extends Counter {
028    
029        private AtomicLong numCompleted = new AtomicLong(0L);
030        private double minProcessingTime = -1.0;
031        private double maxProcessingTime;
032        private double totalProcessingTime;
033        private Date lastExchangeCompletionTime;
034        private Date firstExchangeCompletionTime;
035    
036        @Override
037        @ManagedOperation(description = "Reset counters")
038        public synchronized void reset() {
039            super.reset();
040            numCompleted.set(0L);
041            minProcessingTime = -1.0;
042            maxProcessingTime = 0.0;
043            totalProcessingTime = 0.0;
044            lastExchangeCompletionTime = null;
045            firstExchangeCompletionTime = null;
046    
047        }
048    
049        @ManagedAttribute(description = "Number of successful exchanges")
050        public long getNumCompleted() throws Exception {
051            return numCompleted.get();
052        }
053    
054        @ManagedAttribute(description = "Number of failed exchanges")
055        public long getNumFailed() throws Exception {
056            return numExchanges.get() - numCompleted.get();
057        }
058    
059        @ManagedAttribute(description = "Min Processing Time [milliseconds]")
060        public synchronized double getMinProcessingTimeMillis() throws Exception {
061            return minProcessingTime;
062        }
063    
064        @ManagedAttribute(description = "Mean Processing Time [milliseconds]")
065        public synchronized double getMeanProcessingTimeMillis() throws Exception {
066            long count = numCompleted.get();
067            return count > 0 ? totalProcessingTime / count : 0.0;
068        }
069    
070        @ManagedAttribute(description = "Max Processing Time [milliseconds]")
071        public synchronized double getMaxProcessingTimeMillis() throws Exception {
072            return maxProcessingTime;
073        }
074    
075        @ManagedAttribute(description = "Total Processing Time [milliseconds]")
076        public synchronized double getTotalProcessingTimeMillis() throws Exception {
077            return totalProcessingTime;
078        }
079    
080        @ManagedAttribute(description = "Last Exchange Completed Timestamp")
081        public synchronized Date getLastExchangeCompletionTime() {
082            return lastExchangeCompletionTime;
083        }
084    
085        @ManagedAttribute(description = "First Exchange Completed Timestamp")
086        public synchronized Date getFirstExchangeCompletionTime() {
087            return firstExchangeCompletionTime;
088        }
089    
090        /**
091         * This method is called when an exchange has been processed successfully.
092         * 
093         * @param time in milliseconds it spent on processing the exchange
094         */
095        public synchronized void completedExchange(double time) {
096            increment();
097            numCompleted.incrementAndGet();
098            totalProcessingTime += time;
099            if (minProcessingTime < 0 || time < minProcessingTime) {
100                minProcessingTime = time;
101            }
102            if (time > maxProcessingTime) {
103                maxProcessingTime = time;
104            }
105            Date timestamp = new Date();
106            if (firstExchangeCompletionTime == null) {
107                firstExchangeCompletionTime = timestamp;
108            }
109            lastExchangeCompletionTime = timestamp;
110        }
111    
112        public void completedExchange() {
113            numExchanges.incrementAndGet();
114        }
115    }