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.jstorm.utils;
  
  import java.util.Map;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.alibaba.jstorm.client.ConfigExtension;
  
  import backtype.storm.state.Serializer;
  import backtype.storm.utils.Utils;
  
  public class SerializerFactory {
      private static final Logger LOG = LoggerFactory.getLogger(SerializerFactory.class);
  
      public static <T> Serializer<T> createSerailzer(Map conf) {
          String serializerType = Utils.getString(conf.get(ConfigExtension.TOPOLOGY_SERIALIZER_TYPE), "kryo");
          if (serializerType.equals("java")) {
              return new JavaSerializer<T>();
          } else if (serializerType.equals("kryo")) {
              return new KryoSerializer<T>();
          } else {
              LOG.error("Unknown serializer type: {}", serializerType);
              return null;
          }
      }
  
      private SerializerFactory() {}
  }