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.hdfs.server.blockmanagement;
019
020/**
021 * A immutable object that stores the number of live replicas and
022 * the number of decommissined Replicas.
023 */
024public class NumberReplicas {
025  private int liveReplicas;
026  private int decommissionedReplicas;
027  private int corruptReplicas;
028  private int excessReplicas;
029
030  NumberReplicas() {
031    initialize(0, 0, 0, 0);
032  }
033
034  NumberReplicas(int live, int decommissioned, int corrupt, int excess) {
035    initialize(live, decommissioned, corrupt, excess);
036  }
037
038  void initialize(int live, int decommissioned, int corrupt, int excess) {
039    liveReplicas = live;
040    decommissionedReplicas = decommissioned;
041    corruptReplicas = corrupt;
042    excessReplicas = excess;
043  }
044
045  public int liveReplicas() {
046    return liveReplicas;
047  }
048  public int decommissionedReplicas() {
049    return decommissionedReplicas;
050  }
051  public int corruptReplicas() {
052    return corruptReplicas;
053  }
054  public int excessReplicas() {
055    return excessReplicas;
056  }
057}