Mineplex2018-withcommit/Plugins/Mineplex.ServerData/src/mineplex/serverdata/Utility.java

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package mineplex.serverdata;
import mineplex.serverdata.servers.ConnectionData;
import mineplex.serverdata.servers.ServerManager;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
/**
* Utility offers various necessary utility-based methods for use in Mineplex.ServerData.
* @author Ty
*
*/
public class Utility
{
// The Gson instance used to serialize/deserialize objects in JSON form.
private static Gson _gson = new GsonBuilder().create();
public static Gson getGson() { return _gson; }
// Public static jedis pool for interacting with central default jedis repo.
private static JedisPool _masterPool;
private static JedisPool _slavePool;
/**
* @param object - the (non-null) object to serialize
* @return the serialized form of {@code object}.
*/
public static String serialize(Object object)
{
return _gson.toJson(object);
}
/**
* @param serializedData - the serialized data to be deserialized
* @param type - the resulting class type of the object to be deserialized
* @return the deserialized form of {@code serializedData} for class {@code type}.
*/
public static <T> T deserialize(String serializedData, Class<T> type)
{
return _gson.fromJson(serializedData, type);
}
/**
* @param delimiter - the delimiter character used to separate the concatenated elements
* @param elements - the set of string elements to be concatenated and returned.
* @return the concatenated string of all {@code elements} separated by the {@code delimiter}.
*/
public static String concatenate(char delimiter, String... elements)
{
int length = elements.length;
String result = length > 0 ? elements[0] : new String();
for (int i = 1; i < length; i++)
{
result += delimiter + elements[i];
}
return result;
}
/**
* @return the current timestamp (in seconds) fetched from the central jedis repository
* for synced timestamps.
*/
public static long currentTimeSeconds()
{
long currentTime = 0;
JedisPool pool = getPool(false);
Jedis jedis = pool.getResource();
try
{
currentTime = Long.parseLong(jedis.time().get(0));
}
finally
{
pool.returnResource(jedis);
}
return currentTime;
}
/**
* @return the current timestamp (in milliseconds) fetched from the central jedis repository
* for synced timestamps.
*/
public static long currentTimeMillis()
{
long currentTime = 0;
JedisPool pool = getPool(false);
Jedis jedis = pool.getResource();
try
{
currentTime = Long.parseLong(jedis.time().get(0));
}
finally
{
pool.returnResource(jedis);
}
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return currentTime * 1000;
}
/**
* @param connData - the connection data specifying the database to be connected to.
* @return a newly instantiated {@link JedisPool} connected to the provided {@link ConnectionData} repository.
*/
public static JedisPool generatePool(ConnectionData connData)
{
return new JedisPool(new JedisPoolConfig(), connData.getHost(), connData.getPort());
}
/**
* @param writeable - whether or not the Jedis connections returned should be writeable to.
* @return a globally available {@link JedisPool}
*/
public static JedisPool getPool(boolean writeable)
{
if (writeable)
{
if (_masterPool == null)
{
_masterPool = generatePool(ServerManager.getMasterConnection());
}
return _masterPool;
}
else
{
if (_slavePool == null)
{
_slavePool = generatePool(ServerManager.getSlaveConnection());
}
return _slavePool;
}
}
}