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:

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxRouterFactory.java (实现LoadBalance接口)
    |-resources
        |-META-INF
            |-dubbo
                |-com.alibaba.dubbo.rpc.cluster.RouterFactory (纯文本文件,内容为:xxx=com.xxx.XxxRouterFactory)

XxxRouterFactory.java:

package com.xxx;

import com.alibaba.dubbo.rpc.cluster.RouterFactory;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.Invocation;
import com.alibaba.dubbo.rpc.RpcException;

public class XxxRouterFactory implements RouterFactory {
    public <T> List<Invoker<T>> select(List<Invoker<T>> invokers, Invocation invocation) throws RpcException {
        // ...
    }
}

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

xxx=com.xxx.XxxRouterFactory

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