org.apache.activemq.management.SizeStatisticImpl 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;
public class SizeStatisticImpl extends StatisticImpl {
private long count;
private volatile long maxSize;
private volatile long minSize;
private long totalSize;
private SizeStatisticImpl parent;
public SizeStatisticImpl(String name, String description) {
this(name, "bytes", description);
}
public SizeStatisticImpl(SizeStatisticImpl parent, String name, String description) {
this(name, description);
this.parent = parent;
}
public SizeStatisticImpl(String name, String unit, String description) {
super(name, unit, description);
}
@Override
public synchronized void reset() {
if (isDoReset()) {
super.reset();
count = 0;
maxSize = 0;
minSize = 0;
totalSize = 0;
}
}
public synchronized long getCount() {
return count;
}
public synchronized void addSize(long size) {
count++;
totalSize += size;
if (size > maxSize) {
maxSize = size;
}
if (size < minSize || minSize == 0) {
minSize = size;
}
updateSampleTime();
if (parent != null) {
parent.addSize(size);
}
}
/**
* Reset the total size to the new value
*
* @param size
*/
public synchronized void setTotalSize(long size) {
count++;
totalSize = size;
if (size > maxSize) {
maxSize = size;
}
if (size < minSize || minSize == 0) {
minSize = size;
}
updateSampleTime();
}
/**
* @return the maximum size of any step
*/
public long getMaxSize() {
return maxSize;
}
/**
* @return the minimum size of any step
*/
public long getMinSize() {
return minSize;
}
/**
* @return the total size of all the steps added together
*/
public synchronized long getTotalSize() {
return totalSize;
}
/**
* @return the average size calculated by dividing the total size by the
* number of counts
*/
public synchronized double getAverageSize() {
if (count == 0) {
return 0;
}
double d = totalSize;
return d / count;
}
/**
* @return the average size calculated by dividing the total size by the
* number of counts but excluding the minimum and maximum sizes.
*/
public synchronized double getAverageSizeExcludingMinMax() {
if (count <= 2) {
return 0;
}
double d = totalSize - minSize - maxSize;
return d / (count - 2);
}
/**
* @return the average number of steps per second
*/
public double getAveragePerSecond() {
double d = 1000;
double averageSize = getAverageSize();
if (averageSize == 0) {
return 0;
}
return d / averageSize;
}
/**
* @return the average number of steps per second excluding the min & max
* values
*/
public double getAveragePerSecondExcludingMinMax() {
double d = 1000;
double average = getAverageSizeExcludingMinMax();
if (average == 0) {
return 0;
}
return d / average;
}
public SizeStatisticImpl getParent() {
return parent;
}
public void setParent(SizeStatisticImpl parent) {
this.parent = parent;
}
@Override
protected synchronized void appendFieldDescription(StringBuffer buffer) {
buffer.append(" count: ");
buffer.append(Long.toString(count));
buffer.append(" maxSize: ");
buffer.append(Long.toString(maxSize));
buffer.append(" minSize: ");
buffer.append(Long.toString(minSize));
buffer.append(" totalSize: ");
buffer.append(Long.toString(totalSize));
buffer.append(" averageSize: ");
buffer.append(Double.toString(getAverageSize()));
buffer.append(" averageTimeExMinMax: ");
buffer.append(Double.toString(getAveragePerSecondExcludingMinMax()));
buffer.append(" averagePerSecond: ");
buffer.append(Double.toString(getAveragePerSecond()));
buffer.append(" averagePerSecondExMinMax: ");
buffer.append(Double.toString(getAveragePerSecondExcludingMinMax()));
super.appendFieldDescription(buffer);
}
}