mirror of
https://github.com/mcMMO-Dev/mcMMO.git
synced 2024-10-16 17:13:38 +02:00
This entirely untested and made on a whim patch may or may not fix database lockups due to seperate threads accessing the db connection at the same time
This commit is contained in:
t00thpick1
parent
2b9b5df1ee
commit
4c4def2a23
@ -13,6 +13,8 @@ import java.util.List;
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import java.util.Map;
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import java.util.Properties;
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import org.bukkit.Bukkit;
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import com.gmail.nossr50.mcMMO;
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import com.gmail.nossr50.config.Config;
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import com.gmail.nossr50.datatypes.MobHealthbarType;
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@ -29,7 +31,8 @@ import com.gmail.nossr50.util.Misc;
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public final class SQLDatabaseManager implements DatabaseManager {
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private String connectionString;
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private String tablePrefix = Config.getInstance().getMySQLTablePrefix();
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private Connection connection = null;
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private Connection primaryConnection = null;
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private Connection secondaryConnection = null;
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// Scale waiting time by this much per failed attempt
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private final double SCALING_FACTOR = 40.0;
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@ -199,7 +202,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement("SELECT " + query + ", user, NOW() FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON (user_id = id) WHERE " + query + " > 0 ORDER BY " + query + " DESC, user LIMIT ?, ?");
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statement = getConnection().prepareStatement("SELECT " + query + ", user, NOW() FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON (user_id = id) WHERE " + query + " > 0 ORDER BY " + query + " DESC, user LIMIT ?, ?");
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statement.setInt(1, (pageNumber * statsPerPage) - statsPerPage);
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statement.setInt(2, statsPerPage);
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resultSet = statement.executeQuery();
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@ -245,7 +248,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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"AND " + skillName + " > (SELECT " + skillName + " FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id " +
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"WHERE user = ?)";
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PreparedStatement statement = connection.prepareStatement(sql);
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PreparedStatement statement = getConnection().prepareStatement(sql);
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statement.setString(1, playerName);
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resultSet = statement.executeQuery();
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@ -259,7 +262,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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statement.close();
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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resultSet = statement.executeQuery();
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while (resultSet.next()) {
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@ -278,7 +281,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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"(SELECT taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing+alchemy " +
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"FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE user = ?)";
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PreparedStatement statement = connection.prepareStatement(sql);
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PreparedStatement statement = getConnection().prepareStatement(sql);
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statement.setString(1, playerName);
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resultSet = statement.executeQuery();
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@ -295,7 +298,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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"(SELECT taming+mining+woodcutting+repair+unarmed+herbalism+excavation+archery+swords+axes+acrobatics+fishing+alchemy " +
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"FROM " + tablePrefix + "users JOIN " + tablePrefix + "skills ON user_id = id WHERE user = ?) ORDER BY user";
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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statement.setString(1, playerName);
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resultSet = statement.executeQuery();
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@ -324,7 +327,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement("INSERT INTO " + tablePrefix + "users (user, lastlogin) VALUES (?, ?)", Statement.RETURN_GENERATED_KEYS);
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statement = getConnection().prepareStatement("INSERT INTO " + tablePrefix + "users (user, lastlogin) VALUES (?, ?)", Statement.RETURN_GENERATED_KEYS);
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statement.setString(1, playerName);
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statement.setLong(2, System.currentTimeMillis() / Misc.TIME_CONVERSION_FACTOR);
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statement.execute();
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@ -359,7 +362,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement(
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statement = getConnection().prepareStatement(
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"SELECT "
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+ "s.taming, s.mining, s.repair, s.woodcutting, s.unarmed, s.herbalism, s.excavation, s.archery, s.swords, s.axes, s.acrobatics, s.fishing, s.alchemy, "
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+ "e.taming, e.mining, e.repair, e.woodcutting, e.unarmed, e.herbalism, e.excavation, e.archery, e.swords, e.axes, e.acrobatics, e.fishing, e.alchemy, "
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@ -435,7 +438,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement(
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statement = getConnection().prepareStatement(
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"SELECT "
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+ "s.taming, s.mining, s.repair, s.woodcutting, s.unarmed, s.herbalism, s.excavation, s.archery, s.swords, s.axes, s.acrobatics, s.fishing, s.alchemy, "
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+ "e.taming, e.mining, e.repair, e.woodcutting, e.unarmed, e.herbalism, e.excavation, e.archery, e.swords, e.axes, e.acrobatics, e.fishing, e.alchemy, "
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@ -500,6 +503,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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public boolean checkConnected() {
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boolean isClosed = true;
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boolean isValid = false;
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Connection connection = getConnection();
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boolean exists = (connection != null);
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// If we're waiting for server to recover then leave early
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@ -547,7 +551,11 @@ public final class SQLDatabaseManager implements DatabaseManager {
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}
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// Try to connect again
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connect();
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if (Bukkit.isPrimaryThread()) {
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connectPrimary();
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} else {
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connectSecondary();
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}
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// Leave if connection is good
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try {
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@ -572,13 +580,47 @@ public final class SQLDatabaseManager implements DatabaseManager {
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return false;
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}
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private void connectSecondary() {
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connectionString = "jdbc:mysql://" + Config.getInstance().getMySQLServerName() + ":" + Config.getInstance().getMySQLServerPort() + "/" + Config.getInstance().getMySQLDatabaseName();
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try {
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mcMMO.p.getLogger().info("Attempting connection to MySQL...");
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// Force driver to load if not yet loaded
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Class.forName("com.mysql.jdbc.Driver");
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Properties connectionProperties = new Properties();
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connectionProperties.put("user", Config.getInstance().getMySQLUserName());
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connectionProperties.put("password", Config.getInstance().getMySQLUserPassword());
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connectionProperties.put("autoReconnect", "false");
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connectionProperties.put("maxReconnects", "0");
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secondaryConnection = DriverManager.getConnection(connectionString, connectionProperties);
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mcMMO.p.getLogger().info("Connection to MySQL was a success!");
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}
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catch (SQLException ex) {
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secondaryConnection = null;
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if (reconnectAttempt == 0 || reconnectAttempt >= 11) {
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mcMMO.p.getLogger().severe("Connection to MySQL failed!");
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printErrors(ex);
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}
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}
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catch (ClassNotFoundException ex) {
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secondaryConnection = null;
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if (reconnectAttempt == 0 || reconnectAttempt >= 11) {
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mcMMO.p.getLogger().severe("MySQL database driver not found!");
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}
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}
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}
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public List<String> getStoredUsers() {
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ArrayList<String> users = new ArrayList<String>();
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if (checkConnected()) {
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Statement stmt = null;
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try {
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stmt = connection.createStatement();
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stmt = getConnection().createStatement();
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ResultSet result = stmt.executeQuery("SELECT user FROM " + tablePrefix + "users");
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while (result.next()) {
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users.add(result.getString("user"));
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@ -603,10 +645,18 @@ public final class SQLDatabaseManager implements DatabaseManager {
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return users;
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}
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private Connection getConnection() {
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if (Bukkit.isPrimaryThread()) {
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return primaryConnection;
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} else {
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return secondaryConnection;
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}
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}
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/**
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* Attempt to connect to the mySQL database.
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*/
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private void connect() {
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private void connectPrimary() {
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connectionString = "jdbc:mysql://" + Config.getInstance().getMySQLServerName() + ":" + Config.getInstance().getMySQLServerPort() + "/" + Config.getInstance().getMySQLDatabaseName();
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try {
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@ -619,12 +669,12 @@ public final class SQLDatabaseManager implements DatabaseManager {
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connectionProperties.put("password", Config.getInstance().getMySQLUserPassword());
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connectionProperties.put("autoReconnect", "false");
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connectionProperties.put("maxReconnects", "0");
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connection = DriverManager.getConnection(connectionString, connectionProperties);
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primaryConnection = DriverManager.getConnection(connectionString, connectionProperties);
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mcMMO.p.getLogger().info("Connection to MySQL was a success!");
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}
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catch (SQLException ex) {
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connection = null;
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primaryConnection = null;
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if (reconnectAttempt == 0 || reconnectAttempt >= 11) {
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mcMMO.p.getLogger().severe("Connection to MySQL failed!");
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@ -632,7 +682,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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}
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}
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catch (ClassNotFoundException ex) {
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connection = null;
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primaryConnection = null;
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if (reconnectAttempt == 0 || reconnectAttempt >= 11) {
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mcMMO.p.getLogger().severe("MySQL database driver not found!");
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@ -806,7 +856,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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return;
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}
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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resultSet = statement.executeQuery();
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while (resultSet.next()) {
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@ -866,7 +916,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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statement.executeUpdate();
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return true;
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}
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@ -901,7 +951,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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rows = statement.executeUpdate();
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}
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catch (SQLException ex) {
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@ -936,7 +986,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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ResultSet resultSet;
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try {
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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resultSet = statement.executeQuery();
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while (resultSet.next()) {
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@ -1008,22 +1058,22 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement("INSERT IGNORE INTO " + tablePrefix + "experience (user_id) VALUES (?)");
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statement = getConnection().prepareStatement("INSERT IGNORE INTO " + tablePrefix + "experience (user_id) VALUES (?)");
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statement.setInt(1, id);
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statement.execute();
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statement.close();
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statement = connection.prepareStatement("INSERT IGNORE INTO " + tablePrefix + "skills (user_id) VALUES (?)");
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statement = getConnection().prepareStatement("INSERT IGNORE INTO " + tablePrefix + "skills (user_id) VALUES (?)");
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statement.setInt(1, id);
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statement.execute();
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statement.close();
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statement = connection.prepareStatement("INSERT IGNORE INTO " + tablePrefix + "cooldowns (user_id) VALUES (?)");
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statement = getConnection().prepareStatement("INSERT IGNORE INTO " + tablePrefix + "cooldowns (user_id) VALUES (?)");
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statement.setInt(1, id);
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statement.execute();
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statement.close();
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statement = connection.prepareStatement("INSERT IGNORE INTO " + tablePrefix + "huds (user_id, mobhealthbar) VALUES (? ,'" + Config.getInstance().getMobHealthbarDefault().name() + "')");
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statement = getConnection().prepareStatement("INSERT IGNORE INTO " + tablePrefix + "huds (user_id, mobhealthbar) VALUES (? ,'" + Config.getInstance().getMobHealthbarDefault().name() + "')");
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statement.setInt(1, id);
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statement.execute();
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statement.close();
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@ -1053,7 +1103,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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int i = 1;
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for (int arg : args) {
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@ -1083,7 +1133,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement(sql);
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statement = getConnection().prepareStatement(sql);
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int i = 1;
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for (long arg : args) {
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@ -1120,7 +1170,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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int id = -1;
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try {
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PreparedStatement statement = connection.prepareStatement("SELECT id FROM " + tablePrefix + "users WHERE user = ?");
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PreparedStatement statement = getConnection().prepareStatement("SELECT id FROM " + tablePrefix + "users WHERE user = ?");
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statement.setString(1, playerName);
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id = readInt(statement);
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}
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@ -1135,7 +1185,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement("UPDATE " + tablePrefix + "users SET lastlogin = ? WHERE id = ?");
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statement = getConnection().prepareStatement("UPDATE " + tablePrefix + "users SET lastlogin = ? WHERE id = ?");
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statement.setLong(1, login);
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statement.setInt(2, id);
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statement.execute();
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@ -1161,7 +1211,7 @@ public final class SQLDatabaseManager implements DatabaseManager {
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PreparedStatement statement = null;
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try {
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statement = connection.prepareStatement("UPDATE " + tablePrefix + "huds SET mobhealthbar = ? WHERE user_id = ?");
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statement = getConnection().prepareStatement("UPDATE " + tablePrefix + "huds SET mobhealthbar = ? WHERE user_id = ?");
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statement.setString(1, mobHealthBar);
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statement.setInt(2, userId);
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statement.execute();
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