| /*
|
| * Copyright 1999-2011 Alibaba Group.
|
| *
|
| * 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.dubbo.remoting; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| import com.alibaba.dubbo.common.Adaptive; |
| import com.alibaba.dubbo.common.Constants; |
| import com.alibaba.dubbo.common.Extension;
|
| |
| /** |
| * Codec. (SPI, Singleton, ThreadSafe) |
| * |
| * @author qianlei |
| * @author ding.lid |
| * @author william.liangf |
| */
|
| @Extension |
| public interface Codec { |
| |
| /** |
| * Need more input poison. |
| * |
| * @see #decode(Channel, InputStream) |
| */ |
| Object NEED_MORE_INPUT = new Object(); |
| |
| /** |
| * Encode message. |
| * |
| * @param channel channel. |
| * @param output output stream. |
| * @param message message. |
| */ |
| @Adaptive({Constants.CODEC_KEY}) |
| void encode(Channel channel, OutputStream output, Object message) throws IOException; |
| |
| /** |
| * Decode message. |
| * |
| * @see #NEED_MORE_INPUT |
| * @param channel channel. |
| * @param input input stream. |
| * @return message or <code>NEED_MORE_INPUT</code> poison. |
| */ |
| @Adaptive({Constants.CODEC_KEY}) |
| Object decode(Channel channel, InputStream input) throws IOException; |
| |
| } |