import java.util.List;
import java.util.Set;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.exceptions.JedisConnectionException;
import redis.clients.jedis.exceptions.JedisException;
import com.github.jedis.lock.JedisLock;
public class RedisClient {
private static AgLogger logger = AgLogger.getLogger(RedisClient.class);
/**
* Added Date : 2014.05.20
*/
private Node node = null;
private JedisPool pool;
/**
* Added Date : 2014.05.20
*/
public RedisClient() {
this.node = new Node();
node.setIpAddr("localhost");
node.setPort(6379);
pool = new JedisPool(new JedisPoolConfig(), node.getIpAddr(), node.getPort());
}
/**
* Added Date : 2014.05.20
* ---------------------------
*
* @param node : Redis Master Node
*/
public RedisClient(Node node) {
this.node = node;
pool = new JedisPool(new JedisPoolConfig(), node.getIpAddr(), node.getPort());
}
/**
* Added Date : 2014.05.23
* ---------------------------
*
* @param host : Redis Master Node IP
* @param port : Redis Master Node Port
*/
public RedisClient(String host, int port) {
this.node = new Node();
node.setIpAddr(host);
node.setPort(port);
pool = new JedisPool(new JedisPoolConfig(), host, port);
}
/**
* Added Date : 2014.06.17
* ---------------------------
* Redis Ping command for health check.
*
* @return
*/
public String ping() throws JedisConnectionException, JedisException {
logger.info("Redis Ping Start.");
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.ping();
}
revert(jedis);
logger.info("Redis Ping End.");
return result;
}
/**
* Added Date : 2014.06.16
* ---------------------------
* Write changed configurations to local file.
* This is executed Lua script at redis server side.
*
* @return : Lua Script SHA1 value
*/
public String configRewrite() throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.scriptLoad("return redis.call('config', 'rewrite')");
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.06.16
* ---------------------------
* Check the configuration rewrite lua script execution result.
*
* @param sha1 : Script SHA1 value
* @return : result message. if success, "OK" returned.
*/
public Object configRewriteResult(String sha1) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
Object result = null;
if (jedis != null) {
result = jedis.evalsha(sha1, 0);
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.06.16
* ---------------------------
* Change the replication setting.
* Set current slave to master.
*
* @return
*/
public String slaveOfNoOne() throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.slaveofNoOne();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.06.16
* ---------------------------
* Change the replication setting.
* This is the same as SLAVEOF command.
*
* @param host : Master Node IP Address
* @param port : Master Node Port
* @return
*/
public String slaveOf(String host, int port) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.slaveof(host, port);
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.06.12
* ---------------------------
*
* @return : all key count
*/
public long dbSize() throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
long result = 0;
if (jedis != null) {
result = jedis.dbSize();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.06.09
* ---------------------------
* Redis Configuration Setter
*
* @param parameter : config parameter
* @param value : config value
* @return
*/
public String configSet(String parameter, String value) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.configSet(parameter, value);
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.06.09
* ---------------------------
* Get all configuration
*
* @param pattern
* @return
*/
public List<String> configGet(String pattern) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
List<String> result = null;
if (StringUtils.isNullString(pattern)) {
if (jedis != null) {
result = jedis.configGet("*");
}
}
else {
if (jedis != null) {
result = jedis.configGet(pattern);
}
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.27
* ---------------------------
* Get all keys by pattern
*
* @param pattern
* @return
*/
public Set<String> keys(String pattern) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
Set<String> result = null;
if (jedis != null) {
result = jedis.keys(pattern);
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* auto increment by key
*
* @param key
* @return
*/
public long incr(String key) throws JedisConnectionException, JedisException, InterruptedException {
Jedis jedis = borrow();
long result = 0L;
JedisLock lock = new JedisLock(jedis, "incr_lock:" + key, 100, 100);
lock.acquire();
if (jedis != null) {
result = jedis.incr(key);
}
if (lock != null) {
lock.release();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* auto decrement by key
*
* @param key
* @return
*/
public long decr(String key) throws JedisConnectionException, JedisException, InterruptedException {
Jedis jedis = borrow();
long result = 0L;
JedisLock lock = new JedisLock(jedis, "decr_lock:" + key, 100, 100);
lock.acquire();
if (jedis != null) {
result = jedis.decr(key);
}
if (lock != null) {
lock.release();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* delete info by key
*
* @param key
* @return
*/
public long del(String key) throws JedisConnectionException, JedisException, InterruptedException {
Jedis jedis = borrow();
long result = 0L;
JedisLock lock = new JedisLock(jedis, "del_lock:" + key, 100, 100);
lock.acquire();
if (jedis != null) {
result = jedis.del(key);
}
if (lock != null) {
lock.release();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* get info by key
*
* @param key
* @return
*/
public String get(String key) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.get(key);
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* set info by key (insert, update)
*
* @param key
* @param value
* @return
*/
public String set(String key, String value) throws JedisConnectionException, JedisException, InterruptedException {
Jedis jedis = borrow();
String result = "";
JedisLock lock = new JedisLock(jedis, "set_lock:" + key, 100, 100);
lock.acquire();
if (jedis != null) {
result = jedis.set(key, value);
}
if (lock != null) {
lock.release();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* remove all data in db.
* If use this method, critical.
* Be careful.
*
* @return
*/
public String clear() throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.flushDB();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* Check the key exists or not.
*
* @param key
* @return
*/
public boolean exists(String key) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
boolean result = false;
if (jedis != null) {
result = jedis.exists(key);
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* get all redis server info for monitoring
*
* @return
*/
public String info() throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.info();
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.05.20
* ---------------------------
* get redis server info for monitoring of given section
*
* @param section
* @return
*/
public String info(String section) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.info(section);
}
revert(jedis);
return result;
}
/**
* Added Date : 2014.06.09
* ---------------------------
* migration all keys in given slot to target redis server.
*
* @param host
* @param port
* @param slot
* @return
*/
public String migrateKeysInSlot(String host, int port, int slot) throws JedisConnectionException, JedisException {
String result = "";
Set<String> keysInSlot = keys("*");
int curSlot = 0;
HashSlot hashSlot = new HashSlot();
for (String s : keysInSlot) {
//Calculate slot of key
curSlot = hashSlot.slotCalculate(s);
if (curSlot == slot) {
result = migrate(host, port, s);
}
}
return result;
}
/**
* Added Date : 2014.06.09
* ---------------------------
* migrate given key to target redis server
*
* @param host
* @param port
* @param key
* @return
*/
public String migrate(String host, int port, String key) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.migrate(host, port, key, 0, 100000);
}
revert(jedis);
return result;
}
/**
* Modified Date : 2014.06.12
* ---------------------------
* Added Date : 2014.06.09
* ---------------------------
* migration all keys in given slot to target redis server.
* redis cluster is working, dev mode.
*
* @param host
* @param port
* @param slot
* @return
*/
@Deprecated
public String migrate(String host, int port, int slot) throws JedisConnectionException, JedisException {
String result = "";
Jedis jedis = borrow();
List<String> keys = jedis.clusterGetKeysInSlot(slot, 1000);
for (String key : keys) {
result = migrate(host, port, key);
}
revert(jedis);
return result;
}
@Deprecated
public byte[] bGetJ(String key) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
byte[] value = null;
if (jedis != null) {
value = jedis.get(key.getBytes());
}
revert(jedis);
if (value != null) {
return value;
} else {
return null;
}
}
@Deprecated
public String bSetJ(String key, byte[] value) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
String result = "";
if (jedis != null) {
result = jedis.set(key.getBytes(), value);
}
revert(jedis);
return result;
}
@Deprecated
public List<String> mget(String[] keys) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
List<String> result = null;
if (jedis != null) {
result = jedis.mget(keys);
}
revert(jedis);
return result;
}
@Deprecated
public Set<String> sCopy(String key, String new_key) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
Set<String> oldSets = null;
if (jedis != null) {
oldSets = jedis.smembers(key);
for (String str : oldSets) {
jedis.sadd(new_key, str);
}
}
revert(jedis);
return oldSets;
}
@Deprecated
public void sClear(String key, String oldKey) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
if (jedis != null) {
Set<String> oldSets = jedis.smembers(key);
for (String str : oldSets) {
jedis.del(oldKey + ":" + str);
}
jedis.del(key);
}
revert(jedis);
}
@Deprecated
public Set<String> sMove(String key, String new_key) throws JedisConnectionException, JedisException {
Jedis jedis = borrow();
Set<String> oldSets = null;
if (jedis != null) {
oldSets = jedis.smembers(key);
for (String str : oldSets) {
jedis.smove(key, new_key, str);
}
}
revert(jedis);
return oldSets;
}
/**
*
*/
@SuppressWarnings("unused")
private void destory() throws JedisException {
pool.destroy();
}
/**
*
* @return
*/
private Jedis borrow() throws JedisConnectionException {
return pool.getResource();
}
/**
*
* @param jedis
*/
private void revert(Jedis jedis) throws JedisException {
pool.returnResource(jedis);
}
}
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