/**
    * Copyright The Apache Software Foundation
    *
    * 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.rsgroup;
  
  import com.google.common.collect.Sets;
  
  import java.util.Collection;
  import java.util.NavigableSet;
  import java.util.Set;
  
  import org.apache.hadoop.hbase.TableName;
  import org.apache.hadoop.hbase.classification.InterfaceAudience;
  import org.apache.hadoop.hbase.classification.InterfaceStability;
  import org.apache.hadoop.hbase.net.Address;
  
  /**
   * Stores the group information of region server groups.
   */
  @InterfaceAudience.Public
  @InterfaceStability.Evolving
  public class RSGroupInfo {
  
    public static final String DEFAULT_GROUP = "default";
    public static final String NAMESPACE_DESC_PROP_GROUP = "hbase.rsgroup.name";
  
    private String name;
    private Set<Address> servers;
    private NavigableSet<TableName> tables;
  
    public RSGroupInfo(String name) {
      this(name, Sets.<Address>newHashSet(), Sets.<TableName>newTreeSet());
    }
  
    RSGroupInfo(String name,
                Set<Address> servers,
                NavigableSet<TableName> tables) {
      this.name = name;
      this.servers = servers;
      this.tables = tables;
    }
  
    public RSGroupInfo(RSGroupInfo src) {
      name = src.getName();
      servers = Sets.newHashSet(src.getServers());
      tables = Sets.newTreeSet(src.getTables());
    }
  
    /**
     * Get group name.
     *
     * @return group name
     */
    public String getName() {
      return name;
    }
  
    /**
     * Adds the server to the group.
     *
     * @param server the server
     */
    public void addServer(Address server){
      servers.add(server);
    }
  
    /**
     * Adds a group of servers.
     *
     * @param servers the servers
     */
    public void addAllServers(Collection<Address> addresses){
      this.servers.addAll(addresses);
    }
  
    /**
     * @param address Address of the server
     * @return true, if a server with address is found
     */
    public boolean containsServer(Address address) {
      return servers.contains(address);
    }
 
   /**
    * Get list of servers.
    *
    * @return set of servers
    */
   public Set<Address> getServers() {
     return servers;
   }
 
   /**
    * Remove a server from this group.
    *
    * @param address Address of the server to remove
    */
   public boolean removeServer(Address address) {
     return servers.remove(address);
   }
 
   /**
    * Set of tables that are members of this group
    * @return set of tables
    */
   public NavigableSet<TableName> getTables() {
     return tables;
   }
 
   public void addTable(TableName table) {
     tables.add(table);
   }
 
   public void addAllTables(Collection<TableName> arg) {
     tables.addAll(arg);
   }
 
   public boolean containsTable(TableName table) {
     return tables.contains(table);
   }
 
   public boolean removeTable(TableName table) {
     return tables.remove(table);
   }
 
   @Override
   public String toString() {
     StringBuffer sb = new StringBuffer();
     sb.append("Name:");
     sb.append(this.name);
     sb.append(", ");
     sb.append(" Servers:");
     sb.append(this.servers);
     sb.append(", ");
     sb.append(" Tables:");
     sb.append(this.tables);
     return sb.toString();
 
   }
 
   @Override
   public boolean equals(Object o) {
     if (this == o) {
       return true;
     }
     if (o == null || getClass() != o.getClass()) {
       return false;
     }
 
     RSGroupInfo RSGroupInfo = (RSGroupInfo) o;
 
     if (!name.equals(RSGroupInfo.name)) {
       return false;
     }
     if (!servers.equals(RSGroupInfo.servers)) {
       return false;
     }
     if (!tables.equals(RSGroupInfo.tables)) {
       return false;
     }
 
     return true;
   }
 
   @Override
   public int hashCode() {
     int result = servers.hashCode();
     result = 31 * result + tables.hashCode();
     result = 31 * result + name.hashCode();
     return result;
   }
 
 }