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Apache Geode provides a database-like consistency model, reliable transaction processing and a shared-nothing architecture to maintain very low latency performance with high concurrency processing
/*
* 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.geode.management.internal.beans.stats;
import java.util.HashMap;
import java.util.Map;
import org.apache.geode.StatisticDescriptor;
import org.apache.geode.Statistics;
import org.apache.geode.internal.statistics.StatisticId;
import org.apache.geode.internal.statistics.StatisticNotFoundException;
import org.apache.geode.internal.statistics.StatisticsListener;
import org.apache.geode.internal.statistics.StatisticsNotification;
import org.apache.geode.internal.statistics.ValueMonitor;
import org.apache.geode.management.internal.beans.stats.MBeanStatsMonitor.DefaultHashMap;
/**
*
*
*/
public class AggregateRegionStatsMonitor extends MBeanStatsMonitor {
private volatile int primaryBucketCount = 0;
private volatile int bucketCount = 0;
private volatile int totalBucketSize = 0;
private volatile long lruDestroys = 0;
private volatile long lruEvictions = 0;
private volatile long diskSpace = 0;
private Map monitors;
private Map listeners;
public AggregateRegionStatsMonitor(String name) {
super(name);
monitors = new HashMap();
listeners = new HashMap();
}
@Override
public void addStatisticsToMonitor(Statistics stats) {
ValueMonitor regionMonitor = new ValueMonitor();
MemberLevelRegionStatisticsListener listener = new MemberLevelRegionStatisticsListener();
regionMonitor.addListener(listener);
regionMonitor.addStatistics(stats);
monitors.put(stats, regionMonitor);
listeners.put(stats, listener);
}
public void removePartitionStatistics(Statistics stats) {
MemberLevelRegionStatisticsListener listener = removeListener(stats);
if (listener != null) {
listener.decreaseParStats(stats);
}
}
public void removeLRUStatistics(Statistics stats) {
removeListener(stats);
}
public void removeDirectoryStatistics(Statistics stats) {
removeListener(stats);
}
@Override
public void stopListener() {
for (Statistics stat : listeners.keySet()) {
ValueMonitor monitor = monitors.get(stat);
monitor.removeListener(listeners.get(stat));
monitor.removeStatistics(stat);
}
listeners.clear();
monitors.clear();
}
private MemberLevelRegionStatisticsListener removeListener(Statistics stats) {
ValueMonitor monitor = monitors.remove(stats);
if (monitor != null) {
monitor.removeStatistics(stats);
}
MemberLevelRegionStatisticsListener listener = listeners.remove(stats);
if (listener != null) {
monitor.removeListener(listener);
}
return listener;
}
@Override
public Number getStatistic(String name) {
if (name.equals(StatsKey.LRU_EVICTIONS)) {
return getLruEvictions();
}
if (name.equals(StatsKey.LRU_DESTROYS)) {
return getLruDestroys();
}
if (name.equals(StatsKey.PRIMARY_BUCKET_COUNT)) {
return getTotalPrimaryBucketCount();
}
if (name.equals(StatsKey.BUCKET_COUNT)) {
return getTotalBucketCount();
}
if (name.equals(StatsKey.TOTAL_BUCKET_SIZE)) {
return getTotalBucketSize();
}
if (name.equals(StatsKey.DISK_SPACE)) {
return getDiskSpace();
}
return 0;
}
private class MemberLevelRegionStatisticsListener implements StatisticsListener {
DefaultHashMap statsMap = new DefaultHashMap();
private boolean removed = false;
@Override
public void handleNotification(StatisticsNotification notification) {
synchronized (statsMap) {
if (removed) {
return;
}
for (StatisticId statId : notification) {
StatisticDescriptor descriptor = statId.getStatisticDescriptor();
String name = descriptor.getName();
Number value;
try {
value = notification.getValue(statId);
} catch (StatisticNotFoundException e) {
value = 0;
}
log(name, value);
Number deltaValue = computeDelta(statsMap, name, value);
statsMap.put(name, value);
increaseStats(name, deltaValue);
// fix for bug 46604
}
}
}
/**
* Only decrease those values which can both increase and decrease and not values which can only
* increase like read/writes
*
* Remove last sample value from the aggregate. Last Sampled value can be obtained from the
* DefaultHashMap for the disk
*
* @param stats
*/
public void decreaseParStats(Statistics stats) {
synchronized (statsMap) {
primaryBucketCount -= statsMap.get(StatsKey.PRIMARY_BUCKET_COUNT).intValue();
bucketCount -= statsMap.get(StatsKey.BUCKET_COUNT).intValue();
totalBucketSize -= statsMap.get(StatsKey.TOTAL_BUCKET_SIZE).intValue();
removed = true;
}
}
};
private Number computeDelta(DefaultHashMap statsMap, String name, Number currentValue) {
if (name.equals(StatsKey.PRIMARY_BUCKET_COUNT)) {
Number prevValue = statsMap.get(StatsKey.PRIMARY_BUCKET_COUNT).intValue();
Number deltaValue = currentValue.intValue() - prevValue.intValue();
return deltaValue;
}
if (name.equals(StatsKey.BUCKET_COUNT)) {
Number prevValue = statsMap.get(StatsKey.BUCKET_COUNT).intValue();
Number deltaValue = currentValue.intValue() - prevValue.intValue();
return deltaValue;
}
if (name.equals(StatsKey.TOTAL_BUCKET_SIZE)) {
Number prevValue = statsMap.get(StatsKey.TOTAL_BUCKET_SIZE).intValue();
Number deltaValue = currentValue.intValue() - prevValue.intValue();
return deltaValue;
}
if (name.equals(StatsKey.LRU_EVICTIONS)) {
Number prevValue = statsMap.get(StatsKey.LRU_EVICTIONS).longValue();
Number deltaValue = currentValue.longValue() - prevValue.longValue();
return deltaValue;
}
if (name.equals(StatsKey.LRU_DESTROYS)) {
Number prevValue = statsMap.get(StatsKey.LRU_DESTROYS).longValue();
Number deltaValue = currentValue.longValue() - prevValue.longValue();
return deltaValue;
}
if (name.equals(StatsKey.DISK_SPACE)) {
Number prevValue = statsMap.get(StatsKey.DISK_SPACE).longValue();
Number deltaValue = currentValue.longValue() - prevValue.longValue();
return deltaValue;
}
return 0;
}
private void increaseStats(String name, Number value) {
if (name.equals(StatsKey.PRIMARY_BUCKET_COUNT)) {
primaryBucketCount += value.intValue();
return;
}
if (name.equals(StatsKey.BUCKET_COUNT)) {
bucketCount += value.intValue();
return;
}
if (name.equals(StatsKey.TOTAL_BUCKET_SIZE)) {
totalBucketSize += value.intValue();
return;
}
if (name.equals(StatsKey.LRU_EVICTIONS)) {
lruEvictions += value.longValue();
return;
}
if (name.equals(StatsKey.LRU_DESTROYS)) {
lruDestroys += value.longValue();
return;
}
if (name.equals(StatsKey.DISK_SPACE)) {
diskSpace += value.longValue();
return;
}
}
public int getTotalPrimaryBucketCount() {
return primaryBucketCount;
}
public int getTotalBucketCount() {
return bucketCount;
}
public int getTotalBucketSize() {
return totalBucketSize;
}
public long getLruDestroys() {
return lruDestroys;
}
public long getLruEvictions() {
return lruEvictions;
}
public long getDiskSpace() {
return diskSpace;
}
@Override
public void removeStatisticsFromMonitor(Statistics stats) {
// TODO Auto-generated method stub
}
}