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ActiveMQ example source code file (TimeStatisticImpl.java)

This example ActiveMQ source code file (TimeStatisticImpl.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

statisticimpl, statisticimpl, string, string, timestatisticimpl, timestatisticimpl

The ActiveMQ TimeStatisticImpl.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.activemq.management;


/**
 * A time statistic implementation
 *
 * 
 */
public class TimeStatisticImpl extends StatisticImpl {
    private long count;
    private long maxTime;
    private long minTime;
    private long totalTime;
    private TimeStatisticImpl parent;

    public TimeStatisticImpl(String name, String description) {
        this(name, "millis", description);
    }

    public TimeStatisticImpl(TimeStatisticImpl parent, String name, String description) {
        this(name, description);
        this.parent = parent;
    }

    public TimeStatisticImpl(String name, String unit, String description) {
        super(name, unit, description);
    }

    public synchronized void reset() {
        if(isDoReset()) {
            super.reset();
            count = 0;
            maxTime = 0;
            minTime = 0;
            totalTime = 0;
        }
    }

    public synchronized long getCount() {
        return count;
    }

    public synchronized void addTime(long time) {
        count++;
        totalTime += time;
        if (time > maxTime) {
            maxTime = time;
        }
        if (time < minTime || minTime == 0) {
            minTime = time;
        }
        updateSampleTime();
        if (parent != null) {
            parent.addTime(time);
        }
    }

    /**
     * @return the maximum time of any step
     */
    public long getMaxTime() {
        return maxTime;
    }

    /**
     * @return the minimum time of any step
     */
    public synchronized long getMinTime() {
        return minTime;
    }

    /**
     * @return the total time of all the steps added together
     */
    public synchronized long getTotalTime() {
        return totalTime;
    }

    /**
     * @return the average time calculated by dividing the
     *         total time by the number of counts
     */
    public synchronized double getAverageTime() {
        if (count == 0) {
            return 0;
        }
        double d = totalTime;
        return d / count;
    }


    /**
     * @return the average time calculated by dividing the
     *         total time by the number of counts but excluding the
     *         minimum and maximum times.
     */
    public synchronized double getAverageTimeExcludingMinMax() {
        if (count <= 2) {
            return 0;
        }
        double d = totalTime - minTime - maxTime;
        return d / (count - 2);
    }


    /**
     * @return the average number of steps per second
     */
    public double getAveragePerSecond() {
        double d = 1000;
        double averageTime = getAverageTime();
        if (averageTime == 0) {
            return 0;
        }
        return d / averageTime;
    }

    /**
     * @return the average number of steps per second excluding the min & max values
     */
    public double getAveragePerSecondExcludingMinMax() {
        double d = 1000;
        double average = getAverageTimeExcludingMinMax();
        if (average == 0) {
            return 0;
        }
        return d / average;
    }

    public TimeStatisticImpl getParent() {
        return parent;
    }

    public void setParent(TimeStatisticImpl parent) {
        this.parent = parent;
    }

    protected synchronized void appendFieldDescription(StringBuffer buffer) {
        buffer.append(" count: ");
        buffer.append(Long.toString(count));
        buffer.append(" maxTime: ");
        buffer.append(Long.toString(maxTime));
        buffer.append(" minTime: ");
        buffer.append(Long.toString(minTime));
        buffer.append(" totalTime: ");
        buffer.append(Long.toString(totalTime));
        buffer.append(" averageTime: ");
        buffer.append(Double.toString(getAverageTime()));
        buffer.append(" averageTimeExMinMax: ");
        buffer.append(Double.toString(getAverageTimeExcludingMinMax()));
        buffer.append(" averagePerSecond: ");
        buffer.append(Double.toString(getAveragePerSecond()));
        buffer.append(" averagePerSecondExMinMax: ");
        buffer.append(Double.toString(getAveragePerSecondExcludingMinMax()));
        super.appendFieldDescription(buffer);
    }

}

Other ActiveMQ examples (source code examples)

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