netty-tomcat-sample/rpc-server-v3/src/main/java/cn/hhj/regiest/RegistryCenterWithZk.java

package cn.hhj.regiest;

import cn.hhj.config.ZkConfig;
import org.apache.curator.framework.CuratorFramework;
import org.apache.curator.framework.CuratorFrameworkFactory;
import org.apache.curator.retry.ExponentialBackoffRetry;
import org.apache.zookeeper.CreateMode;

public class RegistryCenterWithZk implements  IRegistryCenter {
    private CuratorFramework curatorFramework = null;

    {
        //初始化zookeeper的连接， 会话超时时间是5s，衰减重试
        curatorFramework = CuratorFrameworkFactory.builder().
                connectString(ZkConfig.CONNECTION_STR).sessionTimeoutMs(5000).
                retryPolicy(new ExponentialBackoffRetry(1000, 3)).
                namespace("registry")
                .build();
        curatorFramework.start();
    }

    @Override
    public void registry(String serviceName, String serviceAddress) {
        String servicePath = "/" + serviceName;
        try{
            // 判断节点是否存在
            if (curatorFramework.checkExists().forPath(servicePath)==null){
                curatorFramework.create().creatingParentsIfNeeded().withMode(CreateMode.PERSISTENT).forPath(servicePath);
            }
            String addressPath=servicePath+"/"+serviceAddress;
            String result=curatorFramework.create().withMode(CreateMode.EPHEMERAL).forPath(addressPath);
            System.out.println("服务注册成功:"+result);
        }catch (Exception e){e.printStackTrace();}
    }
}