com.alachisoft.ncache.common.caching.statistics.customcounters.AverageCounter Maven / Gradle / Ivy

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package com.alachisoft.ncache.common.caching.statistics.customcounters;

/**
 * @author Muneeb Shahid
 * 
 * AverageCounter is an instantaneous counter used for calculating average operations performed in one second. For e.g Average data sent
 */
public class AverageCounter extends InstantaneousCounter {
    private double _sum = 0;
    private double _totalCount = 0;

    public AverageCounter(String name, String instance) {
        super(name, instance);
    }

    public AverageCounter(String category, String name, String instance) {
        super(category, name, instance);
    }

    @Override
    protected void calculate(double value) {
        _sum += value;
    }

    public void incrementBy(double value, double count) {
        synchronized (this) {
            super.incrementBy(value);
            _totalCount += count;
            if (_totalCount != 0)
                _value = _sum / _totalCount;
            else
                _value = 0;
        }
    }

    public void incrementBase(long count) {
        synchronized (this) {
            _totalCount += count;
        }
    }

    @Override
    public void incrementBy(double value) {
        this.incrementBy(value, 1);
    }

    @Override
    protected void flipChanged() {
        _sum = 0;
        _totalCount = 0;
    }

    @Override
    public void decrement() {
    }

    @Override
    public void decrementBy(double value) {
    }

    @Override
    public void setValue(double _value) {
        _lastValue = this._value;
        this._value = _value;
    }

    public double getValue(){
        return _value;
    }

    public double getTotalCount() {
        return _totalCount;
    }

    public double getSum() {
        return _sum;
    }
}