Springboot Redis分布式集群（4）- JedisCluster连接测试集群

@(Markdown博客)

1. 在resources/application.properties中添加集群连接参数

spring.redis.cluster.nodes=120.77.172.111:7000,120.77.172.111:7001,120.77.172.111:7002,120.77.172.111:7003,120.77.172.111:7004,120.77.172.111:7005

2. 创建RedisClusterConfig类用来读取集群配置信息

package me.cnlm.springboot.redis.config;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Configuration;import redis.clients.jedis.HostAndPort;import java.util.*;/** * Created by [e-mail] on 2017/7/21. */@Configurationpublic class RedisClusterConfig {    public static Set<HostAndPort> NODES;    @Value("${spring.redis.cluster.nodes}")    public void setNODES(String nodes) {        try {            Set<HostAndPort> hostAndPortSet = new LinkedHashSet();            String[] hostAndPorts = nodes.split(",");            for (String hap : hostAndPorts) {                String ip = hap.split(":")[0];                int port = Integer.parseInt(hap.split(":")[1]);                HostAndPort hostAndPort = new HostAndPort(ip, port);                hostAndPortSet.add(hostAndPort);            }            NODES = hostAndPortSet;        } catch (Exception e) {            System.out.println("集群节点配置有误");            throw e;        }    }}

3. 创建JedisClusterFactory类用来获取远程redis集群连接实例

package me.cnlm.springboot.redis.redis;import me.cnlm.springboot.redis.config.RedisClusterConfig;import me.cnlm.springboot.redis.config.RedisConfig;import redis.clients.jedis.JedisCluster;import redis.clients.jedis.JedisPoolConfig;/** * Created by [e-mail] on 2017/7/22. */public class JedisClusterFactory {    private static class RedisUtilHolder {        private static final JedisClusterFactory instance = new JedisClusterFactory();    }    public static JedisClusterFactory getInstance() {        return RedisUtilHolder.instance;    }    public JedisCluster getJedisCluster() {        JedisPoolConfig config = new JedisPoolConfig();        config.setMaxTotal(RedisConfig.POOL_MAX_ACTIVE);        config.setMaxIdle(RedisConfig.POOL_MAX_IDLE);        config.setMaxWaitMillis(RedisConfig.POOL_MAX_WAIT);        config.setMinIdle(RedisConfig.POOL_MIN_IDLE);        config.setTestOnBorrow(true);        config.setTestOnReturn(true);        JedisCluster cluster = new JedisCluster(RedisClusterConfig.NODES, config);//        JedisCluster cluster = new JedisCluster(new HostAndPort("120.77.172.111",7000), config);        return cluster;    }}

4.编写单元测试JedisClusterTest类测试集群功能

import me.cnlm.springboot.redis.Application;import me.cnlm.springboot.redis.config.RedisClusterConfig;import me.cnlm.springboot.redis.config.RedisConfig;import me.cnlm.springboot.redis.redis.JedisClusterFactory;import me.cnlm.springboot.redis.redis.JedisFactory;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import org.springframework.test.context.web.WebAppConfiguration;import redis.clients.jedis.Jedis;import redis.clients.jedis.JedisCluster;import java.util.HashMap;import java.util.Map;/** * Created by [e-mail] on 2017/7/21. */@RunWith(SpringJUnit4ClassRunner.class) // SpringJUnit支持，由此引入Spring-Test框架支持！@SpringBootTest(classes = Application.class) // 指定我们SpringBoot工程的Application启动类,1.5.4摒弃了SpringApplicationConfiguration注解@WebAppConfiguration // 由于是Web项目，Junit需要模拟ServletContext，因此我们需要给我们的测试类加上@WebAppConfiguration。public class RedisClusterTest {    @Test    public void testRedis(){        JedisCluster cluster= JedisClusterFactory.getInstance().getJedisCluster();        cluster.set("name","cnlm.me");        cluster.set("email","[e-mail]");        cluster.set("phone","13880**8929");        Map<String,String> map=new HashMap();        map.put("year","2017");        map.put("month","07");        map.put("day","22");        cluster.hmset("map",map);        cluster.set("company","pax");        cluster.set("sex","male");        cluster.set("love","2010");/*        System.out.println(cluster.get("name"));        System.out.println(cluster.get("email"));        System.out.println(cluster.get("phone"));        System.out.println(cluster.hgetAll("map"));        System.out.println(cluster.get("company"));        System.out.println(cluster.get("sex"));        System.out.println(cluster.get("love"));*/    }}

这里在执行单元测试之前，在远程服务器使用monitor命令观察7000，7001，7002三个master节点的数据存储监控
初始化的监控状态：

• 7000节点

[root@cnlm redis]# redis-cli -c -h 127.0.0.1 -p 7000127.0.0.1:7000> clear127.0.0.1:7000> monitorOK

• 7001节点

[root@cnlm redis]# clear[root@cnlm redis]# redis-cli -c -h 127.0.0.1 -p 7001127.0.0.1:7001> monitorOK

• 7002节点

[root@cnlm redis]# clear[root@cnlm redis]# redis-cli -c -h 127.0.0.1 -p 7002127.0.0.1:7002> monitorOK

第一次执行单元测试存储数据，结果：

• 7001节点监控

127.0.0.1:7001> monitorOK1500700354.296269 [0 125.82.190.120:20605] "PING"1500700354.327038 [0 125.82.190.120:20605] "SET" "email" "[e-mail]"1500700354.357832 [0 125.82.190.120:20605] "PING"

• 7002节点监控

127.0.0.1:7002> monitorOK1500700159.006154 [0 125.82.190.120:20447] "PING"1500700354.192247 [0 125.82.190.120:20604] "SET" "name" "cnlm.me"1500700354.228369 [0 125.82.190.120:20604] "PING

这里只存入了两个键值对，name和email，其他的在存储的时候客户端报了连接超时，此问题猜测可能是由于刚刚测试的时候请求次数过多却缺少关闭cluster连接造成超过最大连接数，后面的连接就一直等待超时报异常，添加如下代码暂时未出现超时连接的问题了。

    try{       cluster.close();    } catch (IOException e) {      e.printStackTrace();    }

5.疑问？

• 单元测试时Jedis实例不能操作远端redis集群，只能使用JedisCluster实例才能操作？
• JedisCluster实例操作redis集群时出现连接被拒绝或超时现象，最开始创建集群为：

    ./redis-trib.rb  create --replicas 1 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005

• 然后连接时报错，连接被拒或超时

./redis-trib.rb  create --replicas 1 172.18.153.216:7000 172.18.153.216:7001 172.18.153.216:7002 172.18.153.216:7003 172.18.153.216:7004 172.18.153.216:7005

• 然而还是被拒或超时，最后IP换成服务器的外网ip才可以在本地开发连接远程redis集群，
• 疑问：这里的集群节点ip是否需要客户端能访问的ip？

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