content: /*
   * Copyright 2022 The FeatHub Authors
   *
   * Licensed 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
   *
   *     https://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 com.alibaba.feathub.flink.connectors.redis;
  
  import org.apache.flink.util.StringUtils;
  
  import redis.clients.jedis.CommandObject;
  import redis.clients.jedis.CommandObjects;
  import redis.clients.jedis.Jedis;
  import redis.clients.jedis.Pipeline;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * A subclass of {@link JedisClient} that connects to a Redis master instance. Used for Redis
   * Standalone and Master-Slave mode.
   */
  public class JedisMasterClient implements JedisClient {
      private final Jedis jedis;
  
      private final CommandObjects commandObjects;
  
      private final List<CommandObject<?>> commands;
  
      public JedisMasterClient(String host, int port, String username, String password, int dbNum) {
          jedis = new Jedis(host, port);
          if (!StringUtils.isNullOrWhitespaceOnly(username)) {
              jedis.auth(username, password);
          } else if (!StringUtils.isNullOrWhitespaceOnly(password)) {
              jedis.auth(password);
          }
          jedis.select(dbNum);
          commandObjects = new CommandObjects();
          commands = new ArrayList<>();
      }
  
      @Override
      public void del(String key) {
          commands.add(commandObjects.del(key));
      }
  
      @Override
      public Map<String, String> hgetAll(String key) {
          return jedis.hgetAll(key);
      }
  
      @Override
      public void hmset(String key, Map<String, String> hash) {
          commands.add(commandObjects.hmset(key, hash));
      }
  
      @Override
      public List<String> hmget(String key, String... fields) {
          return jedis.hmget(key, fields);
      }
  
      @Override
      public void rpush(String key, String... string) {
          commands.add(commandObjects.rpush(key, string));
      }
  
      @Override
      public String get(String key) {
          return jedis.get(key);
      }
  
      @Override
      public void set(String key, String value) {
          commands.add(commandObjects.set(key, value));
      }
  
      @Override
      public void lpush(String key, String... string) {
          commands.add(commandObjects.lpush(key, string));
      }
  
      @Override
      public void lpop(String key, int count) {
          commands.add(commandObjects.lpop(key, count));
      }
  
      @Override
      public void rpop(String key, int count) {
          commands.add(commandObjects.rpop(key, count));
      }
  
      @Override
      public List<String> lrange(String key, int start, int stop) {
          return jedis.lrange(key, start, stop);
      }
  
      @Override
      public Set<String> hkeys(String key) {
          return jedis.hkeys(key);
      }
  
      @Override
      public void hdel(String key, String... field) {
          commands.add(commandObjects.hdel(key, field));
      }
  
      @Override
      public void flush() {
          Pipeline pipeline = jedis.pipelined();
          for (CommandObject<?> command : commands) {
              pipeline.appendCommand(command);
          }
          pipeline.sync();
          pipeline.close();
          commands.clear();
      }
  
      @Override
      public void close() {
          jedis.close();
      }
  }
  