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.rpc;
  
  import java.util.concurrent.ConcurrentHashMap;
  
  import com.alipay.remoting.Connection;
  import com.alipay.remoting.InvokeContext;
  import com.alipay.remoting.Protocol;
  import com.alipay.remoting.ProtocolCode;
  import com.alipay.remoting.ProtocolManager;
  import com.alipay.remoting.RemotingContext;
  import com.alipay.remoting.rpc.protocol.UserProcessor;
  
  import io.netty.channel.ChannelHandler;
  import io.netty.channel.ChannelHandlerContext;
  import io.netty.channel.ChannelInboundHandlerAdapter;
  
  /**
   * Dispatch messages to corresponding protocol.
   * 
   * @author jiangping
   * @version $Id: RpcHandler.java, v 0.1 2015-12-14 PM4:01:37 tao Exp $
   */
  @ChannelHandler.Sharable
  public class RpcHandler extends ChannelInboundHandlerAdapter {
      private boolean                                     serverSide;
  
      private ConcurrentHashMap<String, UserProcessor<?>> userProcessors;
  
      public RpcHandler(ConcurrentHashMap<String, UserProcessor<?>> userProcessors) {
          serverSide = false;
          this.userProcessors = userProcessors;
      }
  
      public RpcHandler(boolean serverSide, ConcurrentHashMap<String, UserProcessor<?>> userProcessors) {
          this.serverSide = serverSide;
          this.userProcessors = userProcessors;
      }
  
      @Override
      public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
          ProtocolCode protocolCode = ctx.channel().attr(Connection.PROTOCOL).get();
          Protocol protocol = ProtocolManager.getProtocol(protocolCode);
          protocol.getCommandHandler().handleCommand(
              new RemotingContext(ctx, new InvokeContext(), serverSide, userProcessors), msg);
          ctx.fireChannelRead(msg);
      }
  }
  