content: /*
   *
   * 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 com.alibaba.cloudapp.starter.redis.connection;
  
  import com.alibaba.cloudapp.exeption.CloudAppException;
  import com.alibaba.cloudapp.starter.redis.RedisConnectionFactoryBuilder;
  import org.springframework.boot.autoconfigure.data.redis.RedisProperties;
  
  public class ConnectionFactoryUtil {
  
      public static RedisConnectionFactoryBuilder getRedisConnectionFactoryBuilder(
              RedisProperties properties) {
          boolean isJedisClient = hasClass(
                  "org.springframework.data.redis.connection.jedis.JedisConnection")
                  && hasClass("redis.clients.jedis.Jedis")
                  && hasClass("org.apache.commons.pool2.impl.GenericObjectPool");
  
          boolean isLettuceClient = hasClass("io.lettuce.core.RedisClient");
  
          if(!isJedisClient && !isLettuceClient) {
              throw new CloudAppException("Redis client class is not exist");
          }
  
          if(properties.getClientType() == null) {
              return isJedisClient ? new JedisConnectionFactoryBuilder(properties)
                      : new LettuceConnectionFactoryBuilder(properties);
          }
  
          switch (properties.getClientType()) {
              case JEDIS:
                  if(!isJedisClient) {
                      throw new CloudAppException("Jedis client class is not exist");
                  }
  
                  return new JedisConnectionFactoryBuilder(properties);
              case LETTUCE:
                  if(!isLettuceClient) {
                      throw new CloudAppException("Lettuce client class is not exist");
                  }
                  return new LettuceConnectionFactoryBuilder(properties);
              default:
                  throw new CloudAppException("Invalid redis client type");
          }
      }
  
      private static boolean hasClass(String className) {
          try {
              Class.forName(className);
              return true;
          } catch (ClassNotFoundException e) {
              return false;
          }
      }
  }
  