Redis中sentinel集群的搭建和Jedis测试 图文教程[二]

在Redis中sentinel集群的搭建和Jedis测试 图文教程[一] 中已经写了Redis中sentinel集群的搭建和测试，这一章主要写redis中sentinel的Jedis测试。

一般sentinel架构图为至少4台机子测试 



我这里测试的时候只用两台机子，一台跑Redis-Sentinel和所有的Redis master-slave，一台跑Java测试程序。



xserver.ini为项目工程的配置文件

[Redis]
REDIS_NUMBERS=3
REDIS_SERVER_1=tcp://192.168.0.86:26379
REDIS_SERVER_2=tcp://192.168.0.86:26479
REDIS_SERVER_3=tcp://192.168.0.86:26579
REDIS_MASTER=mymaster
REDIS_PASSWORD=vhreal
REDIS_TIME_OUT=5000
REDIS_DATABASE=0

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RedisConnector.java为Redis操作封装类

import java.util.HashSet;
import java.util.Set;

import org.apache.commons.pool2.impl.GenericObjectPoolConfig;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisSentinelPool;
import Albert.CfgFileReader.CfgFileReader;

public class RedisConnector {

static public HashSet<String> REDIS_SERVER = new HashSet<String>();
static public int REDIS_NUMBERS = 1;
static public String REDIS_MASTER = "master";
static public String REDIS_PASSWORD = "";
static public int REDIS_TIME_OUT = 1000;
static public int REDIS_DATABASE = 0;
static public JedisSentinelPool jedisSentinelPool = null;
static public Object syncObj = new Object();

static public void Start() {
synchronized (syncObj) {
CfgFileReader cfg = null;

try {
cfg = new CfgFileReader("XServer.ini");

// [Redis]
REDIS_NUMBERS = cfg.getInteger("REDIS_NUMBERS", 1);
REDIS_MASTER = cfg.getString("REDIS_MASTER", "master");
REDIS_PASSWORD = cfg.getString("REDIS_PASSWORD", "master");
REDIS_TIME_OUT = cfg.getInteger("REDIS_TIME_OUT", 5000);
REDIS_DATABASE = cfg.getInteger("REDIS_DATABASE", 0);

if (REDIS_PASSWORD.length() == 0)
REDIS_PASSWORD = null;

for (int i = 0; i < REDIS_NUMBERS; ++i) {
String key = String.format("REDIS_SERVER_%d", i + 1);
String value = cfg.getString(key, "");
value = value.replace("tcp://", "");
value = value.replace("/", "");
value = value.toString().trim();

if (value.length() > 0) {
REDIS_SERVER.add(value);
}
}

if (jedisSentinelPool != null) {
jedisSentinelPool.destroy();
jedisSentinelPool = null;
}

System.out.println("Creating JedisSentinelPool...");

jedisSentinelPool = new JedisSentinelPool(REDIS_MASTER,
REDIS_SERVER, new GenericObjectPoolConfig(),
REDIS_TIME_OUT, REDIS_PASSWORD, REDIS_DATABASE);

System.out.println("Create JedisSentinelPool Success");
} catch (Exception ex) {
ex.printStackTrace();
} finally {
if (cfg != null) {
cfg.close();
cfg = null;
}
}
}
}

static public boolean Set(String key, String value) {
if (jedisSentinelPool == null)
return false;

synchronized (syncObj) {
Jedis jedis = null;

try {
jedis = jedisSentinelPool.getResource();

if (jedis != null) {
if (value == null)
value = "";

jedis.set(key, value);
return true;
}
} catch (Exception ex) {
ex.printStackTrace();
jedisSentinelPool.returnBrokenResource(jedis);
} finally {
jedisSentinelPool.returnResource(jedis);
}

return false;
}
}

static public String Get(String key, String defaultval) {
if (jedisSentinelPool == null)
return defaultval;

synchronized (syncObj) {
Jedis jedis = null;

try {
jedis = jedisSentinelPool.getResource();

if (jedis != null) {
String value = jedis.get(key);

if (value == null)
value = defaultval;

return value;
}
} catch (Exception ex) {
ex.printStackTrace();
jedisSentinelPool.returnBrokenResource(jedis);
} finally {
jedisSentinelPool.returnResource(jedis);
}

return defaultval;
}
}

static public boolean Del(String key) {
if (jedisSentinelPool == null)
return false;

synchronized (syncObj) {
Jedis jedis = null;

try {
jedis = jedisSentinelPool.getResource();

if (jedis != null) {
jedis.del(key);
return true;
}
} catch (Exception ex) {
ex.printStackTrace();
jedisSentinelPool.returnBrokenResource(jedis);
} finally {
jedisSentinelPool.returnResource(jedis);
}

return false;
}
}

static public boolean Auth(String key) {
if (jedisSentinelPool == null)
return false;

synchronized (syncObj) {
Jedis jedis = null;

try {
jedis = jedisSentinelPool.getResource();

if (jedis != null) {
jedis.auth(key);
return true;
}
} catch (Exception ex) {
ex.printStackTrace();
jedisSentinelPool.returnBrokenResource(jedis);
} finally {
jedisSentinelPool.returnResource(jedis);
}

return false;
}
}

static public Set<String> Select(String pattern) {
if (jedisSentinelPool == null)
return null;

synchronized (syncObj) {
Jedis jedis = null;

try {
jedis = jedisSentinelPool.getResource();

if (jedis != null) {
Set<String> keys = jedis.keys(pattern);
return keys;
}
} catch (Exception ex) {
ex.printStackTrace();
jedisSentinelPool.returnBrokenResource(jedis);
} finally {
jedisSentinelPool.returnResource(jedis);
}

return null;
}
}
}

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RedisTest.java为测试main函数

public class RedisTest {

public static void main(String[] args) {

RedisConnector.Start();

RedisConnector.Set("str1", "world");
System.out.println(RedisConnector.Get("str", "default"));
System.out.println(RedisConnector.Get("str1", "default"));
}
}

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初始运行RedisTest.java文件，会发现如下问题 



因为我是用两台机子测试的，一台跑redis服务器，服务器的ip为192.168.0.86。一台跑测试java程序，测试程序所在机子的ip为192.168.0.83。两台机子在一个局域网段。

但是我之前sentinel配置master-slave的时候有的ip设为127.0.0.1，当然192.168.0.83上的测试程序无法连接127.0.0.1的服务器从而无法获取资源。

把sentinel配置中的ip全部改为192.168.0.86

运行程序结果如下：