/*
* 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 org.apache.geode.StatisticDescriptor;
import org.apache.geode.distributed.internal.InternalDistributedSystem;
import org.apache.geode.internal.statistics.StatisticId;
import org.apache.geode.internal.statistics.StatisticNotFoundException;
import org.apache.geode.internal.statistics.StatisticsNotification;
/**
*
*
*/
public class GCStatsMonitor extends MBeanStatsMonitor {
private volatile long collections = 0;
private volatile long collectionTime = 0;
public GCStatsMonitor(String name) {
super(name);
}
@Override
public Number getStatistic(String statName) {
if (statName.equals(StatsKey.VM_GC_STATS_COLLECTIONS)) {
return getCollections();
}
if (statName.equals(StatsKey.VM_GC_STATS_COLLECTION_TIME)) {
return getCollectionTime();
}
return 0;
}
@Override
public void handleNotification(StatisticsNotification notification) {
decreasePrevValues(statsMap);
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);
increaseStats(name, value);
statsMap.put(name, value);
}
}
private void decreasePrevValues(DefaultHashMap statsMap) {
collections -= statsMap.get(StatsKey.VM_GC_STATS_COLLECTIONS).intValue();
collectionTime -= statsMap.get(StatsKey.VM_GC_STATS_COLLECTION_TIME).intValue();
}
private void increaseStats(String name, Number value) {
if (name.equals(StatsKey.VM_GC_STATS_COLLECTIONS)) {
collections += value.longValue();
return;
}
if (name.equals(StatsKey.VM_GC_STATS_COLLECTION_TIME)) {
collectionTime += value.longValue();
return;
}
}
public long getCollections() {
return collections;
}
public long getCollectionTime() {
return collectionTime;
}
}