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.alipay.remoting;
  
  import java.util.concurrent.ConcurrentHashMap;
  
  /**
   * Manage the custom serializer according to the class name.
   * 
   * @author jiangping
   * @version $Id: CustomSerializerManager.java, v 0.1 2015-10-20 AM10:46:39 tao Exp $
   */
  public class CustomSerializerManager {
  
      /** For rpc */
      private static ConcurrentHashMap<String/* class name */, CustomSerializer>        classCustomSerializer   = new ConcurrentHashMap<String, CustomSerializer>();
  
      /** For user defined command */
      private static ConcurrentHashMap<CommandCode/* command code */, CustomSerializer> commandCustomSerializer = new ConcurrentHashMap<CommandCode, CustomSerializer>();
  
      /**
       * Register custom serializer for class name.
       * 
       * @param className
       * @param serializer
       * @return
       */
      public static void registerCustomSerializer(String className, CustomSerializer serializer) {
          CustomSerializer prevSerializer = classCustomSerializer.putIfAbsent(className, serializer);
          if (prevSerializer != null) {
              throw new RuntimeException("CustomSerializer has been registered for class: "
                                         + className + ", the custom serializer is: "
                                         + prevSerializer.getClass().getName());
          }
      }
  
      /**
       * Get the custom serializer for class name.
       * 
       * @param className
       * @return
       */
      public static CustomSerializer getCustomSerializer(String className) {
          if (!classCustomSerializer.isEmpty()) {
              return classCustomSerializer.get(className);
          }
          return null;
      }
  
      /**
       * Register custom serializer for command code.
       * 
       * @param code
       * @param serializer
       * @return
       */
      public static void registerCustomSerializer(CommandCode code, CustomSerializer serializer) {
          CustomSerializer prevSerializer = commandCustomSerializer.putIfAbsent(code, serializer);
          if (prevSerializer != null) {
              throw new RuntimeException("CustomSerializer has been registered for command code: "
                                         + code + ", the custom serializer is: "
                                         + prevSerializer.getClass().getName());
          }
      }
  
      /**
       * Get the custom serializer for command code.
       * 
       * @param code
       * @return
       */
      public static CustomSerializer getCustomSerializer(CommandCode code) {
          if (!commandCustomSerializer.isEmpty()) {
              return commandCustomSerializer.get(code);
          }
          return null;
      }
  
      /**
       * clear the custom serializers.
       */
      public static void clear() {
          classCustomSerializer.clear();
          commandCustomSerializer.clear();
      }
  }
  