| /* |
| * 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.rpc.protocol.dubbo; |
| |
| import com.alibaba.dubbo.common.Constants; |
| import com.alibaba.dubbo.remoting.Channel; |
| import com.alibaba.dubbo.remoting.Codec2; |
| import com.alibaba.dubbo.remoting.buffer.ChannelBuffer; |
| import com.alibaba.dubbo.remoting.exchange.Request; |
| import com.alibaba.dubbo.remoting.exchange.Response; |
| import com.alibaba.dubbo.remoting.exchange.support.MultiMessage; |
| import com.alibaba.dubbo.rpc.RpcInvocation; |
| import com.alibaba.dubbo.rpc.RpcResult; |
| |
| import java.io.IOException; |
| |
| public final class DubboCountCodec implements Codec2 { |
| |
| private DubboCodec codec = new DubboCodec(); |
| |
| @Override |
| public void encode(Channel channel, ChannelBuffer buffer, Object msg) throws IOException { |
| codec.encode(channel, buffer, msg); |
| } |
| |
| @Override |
| public Object decode(Channel channel, ChannelBuffer buffer) throws IOException { |
| int save = buffer.readerIndex(); |
| MultiMessage result = MultiMessage.create(); |
| do { |
| Object obj = codec.decode(channel, buffer); |
| if (Codec2.DecodeResult.NEED_MORE_INPUT == obj) { |
| buffer.readerIndex(save); |
| break; |
| } else { |
| result.addMessage(obj); |
| logMessageLength(obj, buffer.readerIndex() - save); |
| save = buffer.readerIndex(); |
| } |
| } while (true); |
| if (result.isEmpty()) { |
| return Codec2.DecodeResult.NEED_MORE_INPUT; |
| } |
| if (result.size() == 1) { |
| return result.get(0); |
| } |
| return result; |
| } |
| |
| private void logMessageLength(Object result, int bytes) { |
| if (bytes <= 0) { |
| return; |
| } |
| if (result instanceof Request) { |
| try { |
| ((RpcInvocation) ((Request) result).getData()).setAttachment( |
| Constants.INPUT_KEY, String.valueOf(bytes)); |
| } catch (Throwable e) { |
| /* ignore */ |
| } |
| } else if (result instanceof Response) { |
| try { |
| ((RpcResult) ((Response) result).getResult()).setAttachment( |
| Constants.OUTPUT_KEY, String.valueOf(bytes)); |
| } catch (Throwable e) { |
| /* ignore */ |
| } |
| } |
| } |
| |
| } |