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/*
 * 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 java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.Set;
import java.util.SortedSet;
import java.util.TreeSet;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.net.Address;
import org.apache.yetus.audience.InterfaceAudience;

/**
 * Stores the group information of region server groups.
 */
@InterfaceAudience.Public
public class RSGroupInfo {
  public static final String DEFAULT_GROUP = "default";
  public static final String NAMESPACE_DESC_PROP_GROUP = "hbase.rsgroup.name";
  public static final String TABLE_DESC_PROP_GROUP = "hbase.rsgroup.name";

  private final String name;
  // Keep servers in a sorted set so has an expected ordering when displayed.
  private final SortedSet
servers; // Keep tables sorted too. private final SortedSet tables; private final Map configuration; public RSGroupInfo(String name) { this(name, new TreeSet
(), new TreeSet()); } RSGroupInfo(String name, Set
servers) { this.name = name; this.servers = servers == null ? new TreeSet<>() : new TreeSet<>(servers); this.tables = new TreeSet<>(); configuration = new HashMap<>(); } /** * Constructor * @deprecated Since 3.0.0, will be removed in 4.0.0. The rsgroup information for a table will be * stored in the configuration of a table so this will be removed. */ @Deprecated RSGroupInfo(String name, Set
servers, Set tables) { this.name = name; this.servers = (servers == null) ? new TreeSet<>() : new TreeSet<>(servers); this.tables = (tables == null) ? new TreeSet<>() : new TreeSet<>(tables); configuration = new HashMap<>(); } public RSGroupInfo(RSGroupInfo src) { this(src.name, src.servers, src.tables); src.configuration.forEach(this::setConfiguration); } /** Get group name. */ public String getName() { return name; } /** Adds the given server to the group. */ public void addServer(Address hostPort) { servers.add(hostPort); } /** Adds the given servers to the group. */ public void addAllServers(Collection
hostPort) { servers.addAll(hostPort); } /** Returns true if a server with hostPort is found */ public boolean containsServer(Address hostPort) { return servers.contains(hostPort); } /** Get list of servers. */ public Set
getServers() { return servers; } /** Remove given server from the group. */ public boolean removeServer(Address hostPort) { return servers.remove(hostPort); } /** Get set of tables that are members of the group. */ public SortedSet getTables() { return tables; } public void addTable(TableName table) { tables.add(table); } public void addAllTables(Collection arg) { tables.addAll(arg); } public boolean containsTable(TableName table) { return tables.contains(table); } public boolean removeTable(TableName table) { return tables.remove(table); } /** Getter for fetching an unmodifiable {@link #configuration} map. */ public Map getConfiguration() { // shallow pointer copy return Collections.unmodifiableMap(configuration); } /** * Setter for storing a configuration setting in {@link #configuration} map. * @param key Config key. * @param value String value. */ public void setConfiguration(String key, String value) { configuration.put(key, Objects.requireNonNull(value)); } /** Remove a config setting represented by the key from the {@link #configuration} map */ public void removeConfiguration(final String key) { configuration.remove(key); } @Override public String toString() { StringBuilder sb = new StringBuilder(); 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); sb.append(", "); sb.append(" Configurations:"); sb.append(this.configuration); return sb.toString(); } @Override public boolean equals(Object o) { if (this == o) { return true; } if (!(o instanceof RSGroupInfo)) { 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; } if (!configuration.equals(rsGroupInfo.configuration)) { return false; } return true; } @Override public int hashCode() { int result = servers.hashCode(); result = 31 * result + tables.hashCode(); result = 31 * result + name.hashCode(); result = 31 * result + configuration.hashCode(); return result; } }




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