| /* |
| * 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.iotdb.db.engine.cache; |
| |
| import org.apache.iotdb.db.conf.IoTDBConstant; |
| import org.apache.iotdb.db.exception.StartupException; |
| import org.apache.iotdb.db.service.IService; |
| import org.apache.iotdb.db.service.JMXService; |
| import org.apache.iotdb.db.service.ServiceType; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class CacheHitRatioMonitor implements CacheHitRatioMonitorMXBean, IService { |
| |
| private static Logger logger = LoggerFactory.getLogger(CacheHitRatioMonitor.class); |
| static final CacheHitRatioMonitor instance = AsyncCacheHitRatioHolder.DISPLAYER; |
| |
| @Override |
| public void start() throws StartupException { |
| try { |
| JMXService.registerMBean(instance, ServiceType.CACHE_HIT_RATIO_DISPLAY_SERVICE.getJmxName()); |
| } catch (Exception e) { |
| throw new StartupException(this.getID().getName(), e.getMessage()); |
| } |
| } |
| |
| @Override |
| public void stop() { |
| JMXService.deregisterMBean(ServiceType.CACHE_HIT_RATIO_DISPLAY_SERVICE.getJmxName()); |
| logger.info("{}: stop {}...", IoTDBConstant.GLOBAL_DB_NAME, this.getID().getName()); |
| } |
| |
| @Override |
| public ServiceType getID() { |
| return ServiceType.CACHE_HIT_RATIO_DISPLAY_SERVICE; |
| } |
| |
| @Override |
| public double getChunkHitRatio() { |
| return ChunkCache.getInstance().calculateChunkHitRatio(); |
| } |
| |
| @Override |
| public long getChunkCacheUsedMemory() { |
| return ChunkCache.getInstance().getUsedMemory(); |
| } |
| |
| @Override |
| public long getChunkCacheMaxMemory() { |
| return ChunkCache.getInstance().getMaxMemory(); |
| } |
| |
| @Override |
| public double getChunkCacheUsedMemoryProportion() { |
| return ChunkCache.getInstance().getUsedMemoryProportion(); |
| } |
| |
| @Override |
| public long getChunkCacheAverageSize() { |
| return ChunkCache.getInstance().getAverageSize(); |
| } |
| |
| @Override |
| public double getTimeSeriesMetadataHitRatio() { |
| return TimeSeriesMetadataCache.getInstance().calculateTimeSeriesMetadataHitRatio(); |
| } |
| |
| @Override |
| public long getTimeSeriesMetadataCacheUsedMemory() { |
| return TimeSeriesMetadataCache.getInstance().getUsedMemory(); |
| } |
| |
| @Override |
| public long getTimeSeriesMetadataCacheMaxMemory() { |
| return TimeSeriesMetadataCache.getInstance().getMaxMemory(); |
| } |
| |
| @Override |
| public double getTimeSeriesCacheUsedMemoryProportion() { |
| return TimeSeriesMetadataCache.getInstance().getUsedMemoryProportion(); |
| } |
| |
| @Override |
| public long getTimeSeriesMetaDataCacheAverageSize() { |
| return TimeSeriesMetadataCache.getInstance().getAverageSize(); |
| } |
| |
| public static CacheHitRatioMonitor getInstance() { |
| return instance; |
| } |
| |
| private static class AsyncCacheHitRatioHolder { |
| |
| private static final CacheHitRatioMonitor DISPLAYER = new CacheHitRatioMonitor(); |
| |
| private AsyncCacheHitRatioHolder() {} |
| } |
| } |