路由扩展

扩展说明

从多个服务提者方中选择一个进行调用。

扩展接口

  • com.alibaba.dubbo.rpc.cluster.RouterFactory

  • com.alibaba.dubbo.rpc.cluster.Router

    已知扩展

  • com.alibaba.dubbo.rpc.cluster.router.ScriptRouterFactory

  • com.alibaba.dubbo.rpc.cluster.router.FileRouterFactory

    扩展示例

Maven 项目结构：

  1. src
  2.  |-main
  3.     |-java
  4.         |-com
  5.             |-xxx
  6.                 |-XxxRouterFactory.java (实现LoadBalance接口)
  7.     |-resources
  8.         |-META-INF
  9.             |-dubbo
  10.                 |-com.alibaba.dubbo.rpc.cluster.RouterFactory (纯文本文件，内容为：xxx=com.xxx.XxxRouterFactory)

XxxRouterFactory.java：

  1. package com.xxx;
  3. import com.alibaba.dubbo.rpc.cluster.RouterFactory;
  4. import com.alibaba.dubbo.rpc.Invoker;
  5. import com.alibaba.dubbo.rpc.Invocation;
  6. import com.alibaba.dubbo.rpc.RpcException;
  8. public class XxxRouterFactory implements RouterFactory {
  9.     public <T> List<Invoker<T>> select(List<Invoker<T>> invokers, Invocation invocation) throws RpcException {
  10.         // ...
  11.     }
  12. }

META-INF/dubbo/com.alibaba.dubbo.rpc.cluster.RouterFactory：

  1. xxx=com.xxx.XxxRouterFactory

原文: http://dubbo.apache.org/#!/docs/dev/impls/router.md?lang=zh-cn