/**
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.hadoop.hbase.master.balancer;
  
  import java.io.Serializable;
  
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.ServerName;
  
  /**
   * Data structure that holds servername and 'load'.
   */
  @InterfaceAudience.Private
  class ServerAndLoad implements Comparable<ServerAndLoad>, Serializable {
    private static final long serialVersionUID = 2735470854607296965L;
    private final ServerName sn;
    private final int load;
  
    ServerAndLoad(final ServerName sn, final int load) {
      this.sn = sn;
      this.load = load;
    }
  
    ServerName getServerName() {
      return this.sn;
    }
  
    int getLoad() {
      return this.load;
    }
  
    @Override
    public int compareTo(ServerAndLoad other) {
      int diff = this.load - other.load;
      return diff != 0 ? diff : this.sn.compareTo(other.getServerName());
    }
  
    @Override
    public int hashCode() {
      int result = load;
      result = 31 * result + ((sn == null) ? 0 : sn.hashCode());
      return result;
    }
  
    @Override
    public boolean equals(Object o) {
      if (o instanceof ServerAndLoad) {
        ServerAndLoad sl = (ServerAndLoad) o;
        return this.compareTo(sl) == 0;
      }
      return false;
    }
  }