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 */
018
019package org.apache.hadoop.hbase.master.balancer;
020
021import org.apache.hadoop.hbase.RegionMetrics;
022import org.apache.hadoop.hbase.Size;
023import org.apache.yetus.audience.InterfaceAudience;
024import org.apache.yetus.audience.InterfaceStability;
025
026/**
027 * Wrapper class for the few fields required by the {@link StochasticLoadBalancer}
028 * from the full {@link RegionMetrics}.
029 */
030@InterfaceAudience.Private
031@InterfaceStability.Evolving
032class BalancerRegionLoad {
033  private final long readRequestsCount;
034  private final long cpRequestsCount;
035  private final long writeRequestsCount;
036  private final int memStoreSizeMB;
037  private final int storefileSizeMB;
038
039  BalancerRegionLoad(RegionMetrics regionMetrics) {
040    readRequestsCount = regionMetrics.getReadRequestCount();
041    cpRequestsCount = regionMetrics.getCpRequestCount();
042    writeRequestsCount = regionMetrics.getWriteRequestCount();
043    memStoreSizeMB = (int) regionMetrics.getMemStoreSize().get(Size.Unit.MEGABYTE);
044    storefileSizeMB = (int) regionMetrics.getStoreFileSize().get(Size.Unit.MEGABYTE);
045  }
046
047  public long getReadRequestsCount() {
048    return readRequestsCount;
049  }
050
051  public long getCpRequestsCount() {
052    return cpRequestsCount;
053  }
054
055  public long getWriteRequestsCount() {
056    return writeRequestsCount;
057  }
058
059  public int getMemStoreSizeMB() {
060    return memStoreSizeMB;
061  }
062
063  public int getStorefileSizeMB() {
064    return storefileSizeMB;
065  }
066}