Redis中sentinel集群的搭建和Jedis测试 图文教程[二]

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　　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
　　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;
}
}
}

　　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"));
}
}

　　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：



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