| /* |
| * 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.dubbo.remoting.transport; |
| |
| import com.alibaba.dubbo.common.logger.Logger; |
| import com.alibaba.dubbo.common.logger.LoggerFactory; |
| import com.alibaba.dubbo.remoting.Channel; |
| import com.alibaba.dubbo.remoting.ChannelHandler; |
| import com.alibaba.dubbo.remoting.Decodeable; |
| import com.alibaba.dubbo.remoting.RemotingException; |
| import com.alibaba.dubbo.remoting.exchange.Request; |
| import com.alibaba.dubbo.remoting.exchange.Response; |
| |
| public class DecodeHandler extends AbstractChannelHandlerDelegate { |
| |
| private static final Logger log = LoggerFactory.getLogger(DecodeHandler.class); |
| |
| public DecodeHandler(ChannelHandler handler) { |
| super(handler); |
| } |
| |
| @Override |
| public void received(Channel channel, Object message) throws RemotingException { |
| if (message instanceof Decodeable) { |
| decode(message); |
| } |
| |
| if (message instanceof Request) { |
| decode(((Request) message).getData()); |
| } |
| |
| if (message instanceof Response) { |
| decode(((Response) message).getResult()); |
| } |
| |
| handler.received(channel, message); |
| } |
| |
| private void decode(Object message) { |
| if (message != null && message instanceof Decodeable) { |
| try { |
| ((Decodeable) message).decode(); |
| if (log.isDebugEnabled()) { |
| log.debug("Decode decodeable message " + message.getClass().getName()); |
| } |
| } catch (Throwable e) { |
| if (log.isWarnEnabled()) { |
| log.warn("Call Decodeable.decode failed: " + e.getMessage(), e); |
| } |
| } // ~ end of catch |
| } // ~ end of if |
| } // ~ end of method decode |
| |
| } |