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 writeRequestsCount;
035  private final int memStoreSizeMB;
036  private final int storefileSizeMB;
037
038  BalancerRegionLoad(RegionMetrics regionMetrics) {
039    readRequestsCount = regionMetrics.getReadRequestCount();
040    writeRequestsCount = regionMetrics.getWriteRequestCount();
041    memStoreSizeMB = (int) regionMetrics.getMemStoreSize().get(Size.Unit.MEGABYTE);
042    storefileSizeMB = (int) regionMetrics.getStoreFileSize().get(Size.Unit.MEGABYTE);
043  }
044
045  public long getReadRequestsCount() {
046    return readRequestsCount;
047  }
048
049  public long getWriteRequestsCount() {
050    return writeRequestsCount;
051  }
052
053  public int getMemStoreSizeMB() {
054    return memStoreSizeMB;
055  }
056
057  public int getStorefileSizeMB() {
058    return storefileSizeMB;
059  }
060}