Cluster SPI-zh - Dubbo

集群扩展

(+) (#)

(1) 扩展说明：

当有多个服务提供方时，将多个服务提供方组织成一个集群，并伪装成一个提供方。

(2) 扩展接口：

com.alibaba.dubbo.rpc.cluster.Cluster

(3) 扩展配置：

<dubbo:protocol cluster="xxx" />

<dubbo:provider cluster="xxx" /> 

(4) 已知扩展：

com.alibaba.dubbo.rpc.cluster.support.FailoverCluster
com.alibaba.dubbo.rpc.cluster.support.FailfastCluster
com.alibaba.dubbo.rpc.cluster.support.FailsafeCluster
com.alibaba.dubbo.rpc.cluster.support.FailbackCluster
com.alibaba.dubbo.rpc.cluster.support.ForkingCluster
com.alibaba.dubbo.rpc.cluster.support.AvailableCluster

(5) 扩展示例：

Maven项目结构

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

XxxCluster.java

package com.xxx;
 
import com.alibaba.dubbo.rpc.cluster.Cluster;
import com.alibaba.dubbo.rpc.cluster.support.AbstractClusterInvoker;
import com.alibaba.dubbo.rpc.cluster.Directory;
import com.alibaba.dubbo.rpc.cluster.LoadBalance;
import com.alibaba.dubbo.rpc.Invoker;
import com.alibaba.dubbo.rpc.Invocation;
import com.alibaba.dubbo.rpc.Result;
import com.alibaba.dubbo.rpc.RpcException;
 
 
public class XxxCluster implements Cluster {
    public <T> Invoker<T> merge(Directory<T> directory) throws RpcException {
        return new AbstractClusterInvoker<T>(directory) {
            public Result doInvoke(Invocation invocation, List<Invoker<T>> invokers, LoadBalance loadbalance) throws RpcException {
                // ...
            }
        };
    }
}

META-INF/dubbo/com.alibaba.dubbo.rpc.cluster.Cluster

xxx=com.xxx.XxxCluster

集群扩展

(1) 扩展说明：

(2) 扩展接口：

(3) 扩展配置：

(4) 已知扩展：

(5) 扩展示例：

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集群扩展

(1) 扩展说明：

(2) 扩展接口：

(3) 扩展配置：

(4) 已知扩展：

(5) 扩展示例：

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Anonymous replies:

Help Tips

Examples

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