content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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
   *
   *      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.csp.sentinel.cluster.server.codec.registry;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import com.alibaba.csp.sentinel.cluster.codec.EntityDecoder;
  
  import io.netty.buffer.ByteBuf;
  
  /**
   * @author Eric Zhao
   * @since 1.4.0
   */
  public final class RequestDataDecodeRegistry {
  
      private static final Map<Integer, EntityDecoder<ByteBuf, ?>> DECODER_MAP = new HashMap<>();
  
      public static boolean addDecoder(int type, EntityDecoder<ByteBuf, ?> decoder) {
          if (DECODER_MAP.containsKey(type)) {
              return false;
          }
          DECODER_MAP.put(type, decoder);
          return true;
      }
  
      public static EntityDecoder<ByteBuf, Object> getDecoder(int type) {
          return (EntityDecoder<ByteBuf, Object>)DECODER_MAP.get(type);
      }
  
      public static boolean removeDecoder(int type) {
          return DECODER_MAP.remove(type) != null;
      }
  }
  