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.master.balancer;
019
020import java.io.Serializable;
021
022import org.apache.yetus.audience.InterfaceAudience;
023import org.apache.hadoop.hbase.ServerName;
024
025/**
026 * Data structure that holds servername and 'load'.
027 */
028@InterfaceAudience.Private
029class ServerAndLoad implements Comparable<ServerAndLoad>, Serializable {
030  private static final long serialVersionUID = 2735470854607296965L;
031  private final ServerName sn;
032  private final int load;
033
034  ServerAndLoad(final ServerName sn, final int load) {
035    this.sn = sn;
036    this.load = load;
037  }
038
039  ServerName getServerName() {
040    return this.sn;
041  }
042
043  int getLoad() {
044    return this.load;
045  }
046
047  @Override
048  public int compareTo(ServerAndLoad other) {
049    int diff = this.load - other.load;
050    return diff != 0 ? diff : this.sn.compareTo(other.getServerName());
051  }
052
053  @Override
054  public int hashCode() {
055    int result = load;
056    result = 31 * result + ((sn == null) ? 0 : sn.hashCode());
057    return result;
058  }
059
060  @Override
061  public boolean equals(Object o) {
062    if (o instanceof ServerAndLoad) {
063      ServerAndLoad sl = (ServerAndLoad) o;
064      return this.compareTo(sl) == 0;
065    }
066    return false;
067  }
068}