001/**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.regionserver;
019
020import org.apache.hadoop.hbase.io.MetricsIOSource;
021import org.apache.hadoop.hbase.io.MetricsIOSourceImpl;
022import org.apache.hadoop.hbase.io.MetricsIOWrapper;
023import org.apache.yetus.audience.InterfaceAudience;
024
025/**
026 * Factory to create MetricsRegionServerSource when given a  MetricsRegionServerWrapper
027 */
028@InterfaceAudience.Private
029public class MetricsRegionServerSourceFactoryImpl implements MetricsRegionServerSourceFactory {
030  public static enum FactoryStorage {
031    INSTANCE;
032    private Object aggLock = new Object();
033    private MetricsRegionAggregateSourceImpl regionAggImpl;
034    private MetricsUserAggregateSourceImpl userAggImpl;
035    private MetricsTableAggregateSourceImpl tblAggImpl;
036    private MetricsHeapMemoryManagerSourceImpl heapMemMngImpl;
037  }
038
039  private synchronized MetricsRegionAggregateSourceImpl getRegionAggregate() {
040    synchronized (FactoryStorage.INSTANCE.aggLock) {
041      if (FactoryStorage.INSTANCE.regionAggImpl == null) {
042        FactoryStorage.INSTANCE.regionAggImpl = new MetricsRegionAggregateSourceImpl();
043      }
044      return FactoryStorage.INSTANCE.regionAggImpl;
045    }
046  }
047
048  public synchronized MetricsUserAggregateSourceImpl getUserAggregate() {
049    synchronized (FactoryStorage.INSTANCE.aggLock) {
050      if (FactoryStorage.INSTANCE.userAggImpl == null) {
051        FactoryStorage.INSTANCE.userAggImpl = new MetricsUserAggregateSourceImpl();
052      }
053      return FactoryStorage.INSTANCE.userAggImpl;
054    }
055  }
056
057  @Override
058  public synchronized MetricsTableAggregateSourceImpl getTableAggregate() {
059    synchronized (FactoryStorage.INSTANCE.aggLock) {
060      if (FactoryStorage.INSTANCE.tblAggImpl == null) {
061        FactoryStorage.INSTANCE.tblAggImpl = new MetricsTableAggregateSourceImpl();
062      }
063      return FactoryStorage.INSTANCE.tblAggImpl;
064    }
065  }
066
067  @Override
068  public synchronized MetricsHeapMemoryManagerSource getHeapMemoryManager() {
069    synchronized (FactoryStorage.INSTANCE.aggLock) {
070      if (FactoryStorage.INSTANCE.heapMemMngImpl == null) {
071        FactoryStorage.INSTANCE.heapMemMngImpl = new MetricsHeapMemoryManagerSourceImpl();
072      }
073      return FactoryStorage.INSTANCE.heapMemMngImpl;
074    }
075  }
076
077  @Override
078  public synchronized MetricsRegionServerSource createServer(
079      MetricsRegionServerWrapper regionServerWrapper) {
080    return new MetricsRegionServerSourceImpl(regionServerWrapper);
081  }
082
083  @Override
084  public MetricsRegionSource createRegion(MetricsRegionWrapper wrapper) {
085    return new MetricsRegionSourceImpl(wrapper, getRegionAggregate());
086  }
087
088  @Override
089  public MetricsTableSource createTable(String table, MetricsTableWrapperAggregate wrapper) {
090    return new MetricsTableSourceImpl(table, getTableAggregate(), wrapper);
091  }
092
093  public MetricsIOSource createIO(MetricsIOWrapper wrapper) {
094    return new MetricsIOSourceImpl(wrapper);
095  }
096
097  @Override
098  public org.apache.hadoop.hbase.regionserver.MetricsUserSource createUser(String shortUserName) {
099    return new org.apache.hadoop.hbase.regionserver.MetricsUserSourceImpl(shortUserName,
100        getUserAggregate());
101  }
102}