package com.gmail.nossr50.database;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.bukkit.Bukkit;
import org.bukkit.entity.Player;
import com.gmail.nossr50.mcMMO;
import com.gmail.nossr50.config.Config;
import com.gmail.nossr50.database.runnables.SQLReconnect;
import com.gmail.nossr50.datatypes.McMMOPlayer;
import com.gmail.nossr50.skills.utilities.SkillType;
import com.gmail.nossr50.spout.SpoutTools;
import com.gmail.nossr50.spout.huds.SpoutHud;
import com.gmail.nossr50.util.Users;
public final class Database {
private static String connectionString;
private static String tablePrefix = Config.getInstance().getMySQLTablePrefix();
private static Connection connection = null;
// Scale waiting time by this much per failed attempt
private static final double SCALING_FACTOR = 40;
// Minimum wait in nanoseconds (default 500ms)
private static final long MIN_WAIT = 500L*1000000L;
// Maximum time to wait between reconnects (default 5 minutes)
private static final long MAX_WAIT = 5L * 60L * 1000L * 1000000L;
// How long to wait when checking if connection is valid (default 3 seconds)
private static final int VALID_TIMEOUT = 3;
// When next to try connecting to Database in nanoseconds
private static long nextReconnectTimestamp = 0L;
// How many connection attemtps have failed
private static int reconnectAttempt = 0;
private Database() {}
/**
* Attempt to connect to the mySQL database.
*/
public static void connect() {
Config configInstance = Config.getInstance();
connectionString = "jdbc:mysql://" + configInstance.getMySQLServerName() + ":" + configInstance.getMySQLServerPort() + "/" + configInstance.getMySQLDatabaseName();
try {
mcMMO.p.getLogger().info("Attempting connection to MySQL...");
// Force driver to load if not yet loaded
Class.forName("com.mysql.jdbc.Driver");
Properties connectionProperties = new Properties();
connectionProperties.put("user", configInstance.getMySQLUserName());
connectionProperties.put("password", configInstance.getMySQLUserPassword());
connectionProperties.put("autoReconnect", "false");
connectionProperties.put("maxReconnects", "0");
connection = DriverManager.getConnection(connectionString, connectionProperties);
mcMMO.p.getLogger().info("Connection to MySQL was a success!");
} catch (SQLException ex) {
connection = null;
if (reconnectAttempt == 0 || reconnectAttempt >= 11) {
mcMMO.p.getLogger().info("Connection to MySQL failed!");
}
} catch (ClassNotFoundException ex) {
connection = null;
if (reconnectAttempt == 0 || reconnectAttempt >= 11) {
mcMMO.p.getLogger().info("MySQL database driver not found!");
}
}
}
/**
* Attempt to create the database structure.
*/
public static void createStructure() {
write("CREATE TABLE IF NOT EXISTS `" + tablePrefix + "users` ("
+ "`id` int(10) unsigned NOT NULL AUTO_INCREMENT,"
+ "`user` varchar(40) NOT NULL,"
+ "`lastlogin` int(32) unsigned NOT NULL,"
+ "PRIMARY KEY (`id`),"
+ "UNIQUE KEY `user` (`user`)) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1;");
write("CREATE TABLE IF NOT EXISTS `" + tablePrefix + "huds` ("
+ "`user_id` int(10) unsigned NOT NULL,"
+ "`hudtype` varchar(50) NOT NULL DEFAULT 'STANDARD',"
+ "PRIMARY KEY (`user_id`),"
+ "FOREIGN KEY (`user_id`) REFERENCES `" + tablePrefix + "users` (`id`) "
+ "ON DELETE CASCADE) ENGINE=MyISAM DEFAULT CHARSET=latin1;");
write("CREATE TABLE IF NOT EXISTS `" + tablePrefix + "cooldowns` ("
+ "`user_id` int(10) unsigned NOT NULL,"
+ "`taming` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`mining` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`woodcutting` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`repair` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`unarmed` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`herbalism` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`excavation` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`archery` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`swords` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`axes` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`acrobatics` int(32) unsigned NOT NULL DEFAULT '0',"
+ "`blast_mining` int(32) unsigned NOT NULL DEFAULT '0',"
+ "PRIMARY KEY (`user_id`),"
+ "FOREIGN KEY (`user_id`) REFERENCES `" + tablePrefix + "users` (`id`) "
+ "ON DELETE CASCADE) ENGINE=MyISAM DEFAULT CHARSET=latin1;");
write("CREATE TABLE IF NOT EXISTS `" + tablePrefix + "skills` ("
+ "`user_id` int(10) unsigned NOT NULL,"
+ "`taming` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`mining` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`woodcutting` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`repair` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`unarmed` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`herbalism` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`excavation` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`archery` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`swords` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`axes` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`acrobatics` int(10) unsigned NOT NULL DEFAULT '0',"
+ "PRIMARY KEY (`user_id`),"
+ "FOREIGN KEY (`user_id`) REFERENCES `" + tablePrefix + "users` (`id`) "
+ "ON DELETE CASCADE) ENGINE=MyISAM DEFAULT CHARSET=latin1;");
write("CREATE TABLE IF NOT EXISTS `" + tablePrefix + "experience` ("
+ "`user_id` int(10) unsigned NOT NULL,"
+ "`taming` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`mining` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`woodcutting` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`repair` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`unarmed` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`herbalism` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`excavation` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`archery` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`swords` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`axes` int(10) unsigned NOT NULL DEFAULT '0',"
+ "`acrobatics` int(10) unsigned NOT NULL DEFAULT '0',"
+ "PRIMARY KEY (`user_id`),"
+ "FOREIGN KEY (`user_id`) REFERENCES `" + tablePrefix + "users` (`id`) "
+ "ON DELETE CASCADE) ENGINE=MyISAM DEFAULT CHARSET=latin1;");
checkDatabaseStructure(DatabaseUpdate.FISHING);
checkDatabaseStructure(DatabaseUpdate.BLAST_MINING);
checkDatabaseStructure(DatabaseUpdate.CASCADE_DELETE);
checkDatabaseStructure(DatabaseUpdate.INDEX);
}
/**
* Check database structure for missing values.
*
* @param update Type of data to check updates for
*/
private static void checkDatabaseStructure(DatabaseUpdate update) {
String sql = null;
ResultSet resultSet = null;
HashMap<Integer, ArrayList<String>> rows = new HashMap<Integer, ArrayList<String>>();
switch (update) {
case BLAST_MINING:
sql = "SELECT * FROM `" + tablePrefix + "cooldowns` ORDER BY `" + tablePrefix + "cooldowns`.`blast_mining` ASC LIMIT 0 , 30";
break;
case CASCADE_DELETE:
write("ALTER TABLE `" + tablePrefix + "huds` ADD FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE;");
write("ALTER TABLE `" + tablePrefix + "experience` ADD FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE;");
write("ALTER TABLE `" + tablePrefix + "cooldowns` ADD FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE;");
write("ALTER TABLE `" + tablePrefix + "skills` ADD FOREIGN KEY (`user_id`) REFERENCES `users`(`id`) ON DELETE CASCADE;");
case FISHING:
sql = "SELECT * FROM `" + tablePrefix + "experience` ORDER BY `" + tablePrefix + "experience`.`fishing` ASC LIMIT 0 , 30";
break;
case INDEX:
if (read("SHOW INDEX FROM " + tablePrefix + "skills").size() != 13) {
mcMMO.p.getLogger().info("Indexing tables, this may take a while on larger databases");
write("ALTER TABLE `" + tablePrefix + "skills` ADD INDEX `idx_taming` (`taming`) USING BTREE, "
+ "ADD INDEX `idx_mining` (`mining`) USING BTREE, "
+ "ADD INDEX `idx_woodcutting` (`woodcutting`) USING BTREE, "
+ "ADD INDEX `idx_repair` (`repair`) USING BTREE, "
+ "ADD INDEX `idx_unarmed` (`unarmed`) USING BTREE, "
+ "ADD INDEX `idx_herbalism` (`herbalism`) USING BTREE, "
+ "ADD INDEX `idx_excavation` (`excavation`) USING BTREE, "
+ "ADD INDEX `idx_archery` (`archery`) USING BTREE, "
+ "ADD INDEX `idx_swords` (`swords`) USING BTREE, "
+ "ADD INDEX `idx_axes` (`axes`) USING BTREE, "
+ "ADD INDEX `idx_acrobatics` (`acrobatics`) USING BTREE, "
+ "ADD INDEX `idx_fishing` (`fishing`) USING BTREE;");
}
break;
default:
break;
}
PreparedStatement statement = null;
try {
if (!checkConnected()) return;
statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();
while (resultSet.next()) {
ArrayList<String> column = new ArrayList<String>();
for (int i = 1; i <= resultSet.getMetaData().getColumnCount(); i++) {
column.add(resultSet.getString(i));
}
rows.put(resultSet.getRow(), column);
}
}
catch (SQLException ex) {
switch (update) {
case BLAST_MINING:
mcMMO.p.getLogger().info("Updating mcMMO MySQL tables for Blast Mining...");
write("ALTER TABLE `"+tablePrefix + "cooldowns` ADD `blast_mining` int(32) NOT NULL DEFAULT '0' ;");
break;
case FISHING:
mcMMO.p.getLogger().info("Updating mcMMO MySQL tables for Fishing...");
write("ALTER TABLE `"+tablePrefix + "skills` ADD `fishing` int(10) NOT NULL DEFAULT '0' ;");
write("ALTER TABLE `"+tablePrefix + "experience` ADD `fishing` int(10) NOT NULL DEFAULT '0' ;");
break;
default:
break;
}
} finally {
if (resultSet != null) {
try {
resultSet.close();
} catch (SQLException e) {
// Ignore the error, we're leaving
}
}
if (statement != null) {
try {
statement.close();
} catch (SQLException e) {
// Ignore the error, we're leaving
}
}
}
}
/**
* Attempt to write the SQL query.
*
* @param sql Query to write.
* @return true if the query was successfully written, false otherwise.
*/
public static boolean write(String sql) {
if (checkConnected()) {
PreparedStatement statement = null;
try {
statement = connection.prepareStatement(sql);
statement.executeUpdate();
return true;
}
catch (SQLException ex) {
printErrors(ex);
return false;
} finally {
if (statement != null) {
try {
statement.close();
} catch (SQLException e) {
printErrors(e);
return false;
}
}
}
}
return false;
}
/**
* Returns the number of rows affected by either a DELETE or UPDATE query
*
* @param sql SQL query to execute
* @return the number of rows affected
*/
public static int update(String sql) {
int ret = 0;
if (checkConnected()) {
PreparedStatement statement = null;
try {
statement = connection.prepareStatement(sql);
ret = statement.executeUpdate();
return ret;
} catch (SQLException ex) {
printErrors(ex);
return 0;
} finally {
if (statement != null) {
try {
statement.close();
} catch (SQLException e) {
printErrors(e);
return 0;
}
}
}
}
return ret;
}
/**
* Get the Integer. Only return first row / first field.
*
* @param sql SQL query to execute
* @return the value in the first row / first field
*/
public static int getInt(String sql) {
ResultSet resultSet;
int result = 0;
if (checkConnected()) {
try {
PreparedStatement statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();
if (resultSet.next()) {
result = resultSet.getInt(1);
}
else {
result = 0;
}
statement.close();
}
catch (SQLException ex) {
printErrors(ex);
}
}
return result;
}
/**
* Check connection status and re-establish if dead or stale.
*
* If the very first immediate attempt fails, further attempts
* will be made in progressively larger intervals up to MAX_WAIT
* intervals.
*
* This allows for MySQL to time out idle connections as needed by
* server operator, without affecting McMMO, while still providing
* protection against a database outage taking down Bukkit's tick
* processing loop due to attemping a database connection each
* time McMMO needs the database.
*
* @return the boolean value for whether or not we are connected
*/
public static boolean checkConnected() {
boolean isClosed = true;
boolean isValid = false;
boolean exists = (connection != null);
// If we're waiting for server to recover then leave early
if (nextReconnectTimestamp > 0 && nextReconnectTimestamp > System.nanoTime()) {
return false;
}
if (exists) {
try {
isClosed = connection.isClosed();
} catch (SQLException e) {
isClosed = true;
e.printStackTrace();
printErrors(e);
}
if (!isClosed) {
try {
isValid = connection.isValid(VALID_TIMEOUT);
} catch (SQLException e) {
// Don't print stack trace because it's valid to lose idle connections
// to the server and have to restart them.
isValid = false;
}
}
}
// Leave if all ok
if (exists && !isClosed && isValid) {
// Housekeeping
nextReconnectTimestamp = 0;
reconnectAttempt = 0;
return true;
}
// Cleanup after ourselves for GC and MySQL's sake
if (exists && !isClosed) {
try {
connection.close();
} catch (SQLException ex) {
// This is a housekeeping exercise, ignore errors
}
}
// Try to connect again
connect();
// Leave if connection is good
try {
if (connection != null && !connection.isClosed()) {
// Schedule a database save if we really had an outage
if (reconnectAttempt > 1) {
mcMMO.p.getServer().getScheduler().scheduleSyncDelayedTask(mcMMO.p, new SQLReconnect(), 5);
}
nextReconnectTimestamp = 0;
reconnectAttempt = 0;
return true;
}
} catch (SQLException e) {
// Failed to check isClosed, so presume connection is bad and attempt later
e.printStackTrace();
printErrors(e);
}
reconnectAttempt++;
nextReconnectTimestamp = (long)(System.nanoTime() + Math.min(MAX_WAIT, (reconnectAttempt*SCALING_FACTOR*MIN_WAIT)));
return false;
}
/**
* Read SQL query.
*
* @param sql SQL query to read
* @return the rows in this SQL query
*/
public static HashMap<Integer, ArrayList<String>> read(String sql) {
ResultSet resultSet;
HashMap<Integer, ArrayList<String>> rows = new HashMap<Integer, ArrayList<String>>();
if (checkConnected()) {
try {
PreparedStatement statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();
while (resultSet.next()) {
ArrayList<String> column = new ArrayList<String>();
for (int i = 1; i <= resultSet.getMetaData().getColumnCount(); i++) {
column.add(resultSet.getString(i));
}
rows.put(resultSet.getRow(), column);
}
statement.close();
}
catch (SQLException ex) {
printErrors(ex);
}
}
return rows;
}
public static Map<String, Integer> readSQLRank(String playerName) {
ResultSet resultSet;
Map<String, Integer> skills = new HashMap<String, Integer>();
if (checkConnected()) {
try {
for (SkillType skillType: SkillType.values()) {
if (skillType.isChildSkill()) {
continue;
}
String sql = "SELECT COUNT(*) AS rank FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE " + skillType.name().toLowerCase() + " > 0 AND " + skillType.name().toLowerCase() + " > (SELECT " + skillType.name().toLowerCase() + " FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE user = '" + playerName + "')";
PreparedStatement statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();
resultSet.next();
int rank = resultSet.getInt("rank");
sql = "SELECT user, " + skillType.name().toLowerCase() + " FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE " + skillType.name().toLowerCase() + " > 0 AND " + skillType.name().toLowerCase() + " = (SELECT " + skillType.name().toLowerCase() + " FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE user = '" + playerName + "') ORDER BY user";
statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();
while (resultSet.next()) {
if (resultSet.getString("user").equalsIgnoreCase(playerName)) {
skills.put(skillType.name(), rank + resultSet.getRow());
break;
}
}
statement.close();
}
String sql = "SELECT COUNT(*) AS rank FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing > 0 AND taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing > (SELECT taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE user = '" + playerName + "')";
PreparedStatement statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();
resultSet.next();
int rank = resultSet.getInt("rank");
sql = "SELECT user, taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing > 0 AND taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing = (SELECT taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE user = '" + playerName + "') ORDER BY user";
statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();
while (resultSet.next()) {
if (resultSet.getString("user").equalsIgnoreCase(playerName)) {
skills.put("ALL", rank + resultSet.getRow());
break;
}
}
statement.close();
}
catch (SQLException ex) {
printErrors(ex);
}
}
return skills;
}
public static void purgePowerlessSQL() {
mcMMO.p.getLogger().info("Purging powerless users...");
HashMap<Integer, ArrayList<String>> usernames = read("SELECT u.user FROM " + tablePrefix + "skills AS s, " + tablePrefix + "users AS u WHERE s.user_id = u.id AND (s.taming+s.mining+s.woodcutting+s.repair+s.unarmed+s.herbalism+s.excavation+s.archery+s.swords+s.axes+s.acrobatics+s.fishing) = 0");
write("DELETE FROM " + tablePrefix + "users WHERE " + tablePrefix + "users.id IN (SELECT * FROM (SELECT u.id FROM " + tablePrefix + "skills AS s, " + tablePrefix + "users AS u WHERE s.user_id = u.id AND (s.taming+s.mining+s.woodcutting+s.repair+s.unarmed+s.herbalism+s.excavation+s.archery+s.swords+s.axes+s.acrobatics+s.fishing) = 0) AS p)");
int purgedUsers = 0;
for (int i = 1; i <= usernames.size(); i++) {
String playerName = usernames.get(i).get(0);
if (playerName == null || Bukkit.getOfflinePlayer(playerName).isOnline()) {
continue;
}
profileCleanup(playerName);
purgedUsers++;
}
mcMMO.p.getLogger().info("Purged " + purgedUsers + " users from the database.");
}
public static void purgeOldSQL() {
mcMMO.p.getLogger().info("Purging old users...");
long currentTime = System.currentTimeMillis();
long purgeTime = 2630000000L * Config.getInstance().getOldUsersCutoff();
HashMap<Integer, ArrayList<String>> usernames = read("SELECT user FROM " + tablePrefix + "users WHERE ((" + currentTime + " - lastlogin*1000) > " + purgeTime + ")");
write("DELETE FROM " + tablePrefix + "users WHERE " + tablePrefix + "users.id IN (SELECT * FROM (SELECT id FROM " + tablePrefix + "users WHERE ((" + currentTime + " - lastlogin*1000) > " + purgeTime + ")) AS p)");
int purgedUsers = 0;
for (int i = 1; i <= usernames.size(); i++) {
String playerName = usernames.get(i).get(0);
if (playerName == null) {
continue;
}
profileCleanup(playerName);
purgedUsers++;
}
mcMMO.p.getLogger().info("Purged " + purgedUsers + " users from the database.");
}
private static void printErrors(SQLException ex) {
System.out.println("SQLException: " + ex.getMessage());
System.out.println("SQLState: " + ex.getSQLState());
System.out.println("VendorError: " + ex.getErrorCode());
}
public static void profileCleanup(String playerName) {
McMMOPlayer mcmmoPlayer = Users.getPlayer(playerName);
if (mcmmoPlayer != null) {
Player player = mcmmoPlayer.getPlayer();
SpoutHud spoutHud = mcmmoPlayer.getProfile().getSpoutHud();
if (spoutHud != null) {
spoutHud.removeWidgets();
}
Users.remove(playerName);
if (player.isOnline()) {
Users.addUser(player);
if (mcMMO.spoutEnabled) {
SpoutTools.reloadSpoutPlayer(player);
}
}
}
}
}