org.apache.activemq.management.TimeStatisticImpl Maven / Gradle / Ivy
/**
* 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);
}
}