Subversion Repositories SmartDukaan

package net.sourceforge.stat4j.calculators;

import net.sourceforge.stat4j.Metric;

import java.util.Properties;

/**

 * Error/etc rate in the last N minutes (or whatever period you choose).

 * @author Jakub Holy

 */

public class RunningRate extends CalculatorAdapter {

	protected long starttimestamp;

	protected long 		period;

	protected long		occurances;

	public RunningRate() {

		reset();

	}

	public void applyMetric(Metric metric) {

		++occurances;

		if (metric.isSingle()) {

            long metricCaptureTime = metric.getTimestamp();

            long metricCalculationTimeMs = metricCaptureTime - starttimestamp;

            if (metricCalculationTimeMs > period) {

                reset();

                ++occurances;

            }

			setTimestamp(metricCaptureTime);

		}

	}

	public double getResult() {

		return occurances;

	}

	public void reset() {

		occurances = 0;

		starttimestamp = System.currentTimeMillis();

	}

	public void init(String name,Properties properties) {

		// read per

		String periodStr = properties.getProperty("period","60000");

		this.period = Long.parseLong(periodStr);

		super.init(name);

		System.out.println(name);

	}

}