消息派发扩展

扩展说明

通道信息派发器，用于指定线程池模型。

扩展接口

org.apache.dubbo.remoting.Dispatcher

扩展配置

<dubbo:protocol dispatcher="xxx" />
<!-- 缺省值设置，当<dubbo:protocol>没有配置dispatcher属性时，使用此配置 -->
<dubbo:provider dispatcher="xxx" />

已知扩展

• org.apache.dubbo.remoting.transport.dispatcher.all.AllDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.direct.DirectDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.message.MessageOnlyDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.execution.ExecutionDispatcher
• org.apache.dubbo.remoting.transport.dispatcher.connection.ConnectionOrderedDispatcher

扩展示例

Maven 项目结构：

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxDispatcher.java (实现Dispatcher接口)
    |-resources
        |-META-INF
            |-dubbo
                |-org.apache.dubbo.remoting.Dispatcher (纯文本文件，内容为：xxx=com.xxx.XxxDispatcher)

XxxDispatcher.java：

package com.xxx;
import org.apache.dubbo.remoting.Dispatcher;
public class XxxDispatcher implements Dispatcher {
    public Group lookup(URL url) {
        // ...
    }
}

META-INF/dubbo/org.apache.dubbo.remoting.Dispatcher：

xxx=com.xxx.XxxDispatcher