| /* |
| * 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.distributed.ConfigurationProperties; |
| 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; |
| |
| /** |
| * This class acts as a monitor and listen for Gateway Sender Overflow statistics updates on |
| * behalf of MemberMBean. |
| * <p> |
| * There's only one dedicated thread that wakes up at the |
| * {@link ConfigurationProperties#STATISTIC_SAMPLE_RATE} configured, samples all the statistics, |
| * writes them to the {@link ConfigurationProperties#STATISTIC_ARCHIVE_FILE} configured (if any) and |
| * notifies listeners of changes. The mutable fields are declared as {@code volatile} to make sure |
| * readers of the statistics get the latest recorded value. |
| * <p> |
| * This class is conditionally thread-safe, there can be multiple concurrent readers accessing a |
| * instance, but concurrent writers need to be synchronized externally. |
| * |
| * @see org.apache.geode.internal.statistics.HostStatSampler |
| * @see org.apache.geode.distributed.ConfigurationProperties |
| * @see org.apache.geode.management.internal.beans.stats.MBeanStatsMonitor |
| */ |
| public class GatewaySenderOverflowMonitor extends MBeanStatsMonitor { |
| private volatile long lruEvictions = 0; |
| private volatile long bytesOverflowedToDisk = 0; |
| private volatile long entriesOverflowedToDisk = 0; |
| private final Map<Statistics, ValueMonitor> monitors; |
| private final Map<Statistics, StatisticsListener> listeners; |
| |
| long getLruEvictions() { |
| return lruEvictions; |
| } |
| |
| public long getBytesOverflowedToDisk() { |
| return bytesOverflowedToDisk; |
| } |
| |
| public long getEntriesOverflowedToDisk() { |
| return entriesOverflowedToDisk; |
| } |
| |
| Map<Statistics, ValueMonitor> getMonitors() { |
| return monitors; |
| } |
| |
| Map<Statistics, StatisticsListener> getListeners() { |
| return listeners; |
| } |
| |
| public GatewaySenderOverflowMonitor(String name) { |
| super(name); |
| monitors = new HashMap<>(); |
| listeners = new HashMap<>(); |
| } |
| |
| Number computeDelta(Map<String, Number> statsMap, String name, Number currentValue) { |
| if (name.equals(StatsKey.GATEWAYSENDER_LRU_EVICTIONS)) { |
| Number prevValue = statsMap.getOrDefault(StatsKey.GATEWAYSENDER_LRU_EVICTIONS, 0); |
| return currentValue.longValue() - prevValue.longValue(); |
| } |
| |
| if (name.equals(StatsKey.GATEWAYSENDER_ENTRIES_OVERFLOWED_TO_DISK)) { |
| Number prevValue = |
| statsMap.getOrDefault(StatsKey.GATEWAYSENDER_ENTRIES_OVERFLOWED_TO_DISK, 0); |
| return currentValue.longValue() - prevValue.longValue(); |
| } |
| |
| if (name.equals(StatsKey.GATEWAYSENDER_BYTES_OVERFLOWED_TO_DISK)) { |
| Number prevValue = statsMap.getOrDefault(StatsKey.GATEWAYSENDER_BYTES_OVERFLOWED_TO_DISK, 0); |
| return currentValue.longValue() - prevValue.longValue(); |
| } |
| |
| return 0; |
| } |
| |
| void increaseStats(String name, Number value) { |
| if (name.equals(StatsKey.GATEWAYSENDER_LRU_EVICTIONS)) { |
| lruEvictions += value.longValue(); |
| return; |
| } |
| |
| if (name.equals(StatsKey.GATEWAYSENDER_ENTRIES_OVERFLOWED_TO_DISK)) { |
| entriesOverflowedToDisk += value.longValue(); |
| return; |
| } |
| |
| if (name.equals(StatsKey.GATEWAYSENDER_BYTES_OVERFLOWED_TO_DISK)) { |
| bytesOverflowedToDisk += value.longValue(); |
| return; |
| } |
| } |
| |
| @Override |
| public Number getStatistic(String name) { |
| if (name.equals(StatsKey.GATEWAYSENDER_LRU_EVICTIONS)) { |
| return getLruEvictions(); |
| } |
| |
| if (name.equals(StatsKey.GATEWAYSENDER_ENTRIES_OVERFLOWED_TO_DISK)) { |
| return getEntriesOverflowedToDisk(); |
| } |
| |
| if (name.equals(StatsKey.GATEWAYSENDER_BYTES_OVERFLOWED_TO_DISK)) { |
| return getBytesOverflowedToDisk(); |
| } |
| |
| return 0; |
| } |
| |
| @Override |
| public void addStatisticsToMonitor(Statistics stats) { |
| ValueMonitor overflowMonitor = new ValueMonitor(); |
| StatisticsListener listener = new GatewaySenderOverflowStatisticsListener(); |
| overflowMonitor.addListener(listener); |
| overflowMonitor.addStatistics(stats); |
| |
| monitors.put(stats, overflowMonitor); |
| listeners.put(stats, listener); |
| } |
| |
| @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(); |
| } |
| |
| @Override |
| public void removeStatisticsFromMonitor(Statistics stats) {} |
| |
| class GatewaySenderOverflowStatisticsListener implements StatisticsListener { |
| Map<String, Number> statsMap = new HashMap<>(); |
| |
| @Override |
| public void handleNotification(StatisticsNotification notification) { |
| synchronized (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); |
| Number deltaValue = computeDelta(statsMap, name, value); |
| statsMap.put(name, value); |
| increaseStats(name, deltaValue); |
| } |
| } |
| } |
| } |
| } |