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Allow sql connection parallelity

Signed-off-by: Lixfel <agga-games@gmx.de>
Dieser Commit ist enthalten in:
Lixfel 2022-04-01 17:08:08 +02:00
Ursprung 65cdc5b69c
Commit 1da5c45b22
3 geänderte Dateien mit 120 neuen und 88 gelöschten Zeilen

Datei anzeigen

@ -272,12 +272,6 @@ public class BungeeCore extends Plugin {
Persistent.setChatPrefix(CHAT_PREFIX);
Persistent.setLobbyServer(LOBBY_SERVER);
Statement.connect(
config.getString("db.url"),
config.getString("db.username"),
config.getString("db.password")
);
if (config.contains("discord")) {
SteamwarDiscordBotConfig.loadConfig(config.getSection("discord"));
}

Datei anzeigen

@ -20,7 +20,6 @@
package de.steamwar.bungeecore;
import de.steamwar.bungeecore.sql.SWException;
import de.steamwar.bungeecore.sql.Statement;
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
@ -63,7 +62,7 @@ public class ErrorLogger extends Handler {
SWException.log("Bungee", "DDOS", ddosRate + "");
}
return;
} else if (!Statement.connectionStable()) {
} else if (stacktrace.contains("ErrorLogger")) {
return;
}

Datei anzeigen

@ -21,128 +21,167 @@ package de.steamwar.bungeecore.sql;
import de.steamwar.bungeecore.BungeeCore;
import net.md_5.bungee.api.ProxyServer;
import net.md_5.bungee.config.Configuration;
import net.md_5.bungee.config.ConfigurationProvider;
import net.md_5.bungee.config.YamlConfiguration;
import java.io.File;
import java.io.IOException;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
import java.util.*;
import java.util.logging.Level;
import java.util.logging.Logger;
public class Statement implements AutoCloseable {
private static final Logger logger = BungeeCore.get().getLogger();
private static final List<Statement> statements = new ArrayList<>();
private static final Deque<Connection> connections = new ArrayDeque<>();
private static Connection con;
private static String url;
private static String user;
private static String password;
private static final String URL;
private static final String USER;
private static final String PASSWORD;
public static void connect(String url, String user, String password) {
Statement.url = url;
Statement.user = user;
Statement.password = password;
static {
File file = new File(BungeeCore.get().getDataFolder(), "MySQL.yml");
Configuration config;
try {
con = DriverManager.getConnection(url + "?autoReconnect=true&useServerPrepStmts=true", user, password);
} catch (SQLException e) {
config = ConfigurationProvider.getProvider(YamlConfiguration.class).load(file);
} catch (IOException e) {
ProxyServer.getInstance().stop();
throw new SecurityException("Could not start SQL-Connection", e);
throw new SecurityException("", e);
}
}
private static void reset() {
closeAll();
connect(url, user, password);
try {
for (Statement statement : statements) {
statement.init();
}
} catch (SQLException e) {
throw new SecurityException("Could not reprepare SQL statements", e);
}
}
@Override
public void close() {
try {
st.close();
} catch (SQLException e) {
BungeeCore.get().getLogger().log(Level.INFO, "Could not close statement", e);
}
statements.remove(this);
URL = "jdbc:mysql://" + config.getString("HOST") + ":" + config.getString("PORT") + "/" + config.getString("DATABASE");
USER = config.getString("USER");
PASSWORD = config.getString("PASSWORD");
}
public static void closeAll() {
synchronized (statements) {
for (Statement statement : statements) {
synchronized (connections) {
for(Connection connection : connections) {
try {
statement.st.close();
synchronized (statements) {
statements.forEach(statement -> statement.close(connection));
}
connection.close();
} catch (SQLException e) {
BungeeCore.get().getLogger().log(Level.INFO, "Could not close statement", e);
logger.log(Level.INFO, "Could not close SQL connection", e);
}
}
try {
con.close();
} catch (SQLException e) {
BungeeCore.get().getLogger().log(Level.INFO, "Could not close SQL connection", e);
}
}
}
public static boolean connectionStable() {
try {
return !con.isClosed();
} catch (SQLException e) {
return false;
connections.clear();
}
}
private final String sql;
private PreparedStatement st;
private final Map<Connection, PreparedStatement> cachedStatements = new HashMap<>();
public Statement(String sql) {
this.sql = sql;
statements.add(this);
try {
init();
} catch (SQLException e) {
throw new SecurityException("Could not init SQL statement", e);
synchronized (statements) {
statements.add(this);
}
}
private void init() throws SQLException {
st = con.prepareStatement(sql);
}
public <T> T select(ResultSetUser<T> user, Object... objects) {
synchronized (statements) {
return prepare(() -> {
ResultSet rs = st.executeQuery();
T result = user.use(rs);
rs.close();
return result;
}, objects);
}
return withConnection(st -> {
ResultSet rs = st.executeQuery();
T result = user.use(rs);
rs.close();
return result;
}, objects);
}
public void update(Object... objects) {
synchronized (statements) {
prepare(st::executeUpdate, objects);
}
withConnection(PreparedStatement::executeUpdate, objects);
}
private <T> T prepare(SQLRunnable<T> runnable, Object... objects) {
private <T> T withConnection(SQLRunnable<T> runnable, Object... objects) {
Connection connection = aquireConnection();
T result;
try {
setObjects(objects);
return runnable.run();
result = tryWithConnection(connection, runnable, objects);
} catch (SQLException e) {
reset();
throw new SecurityException("Could not execute SQL statement", e);
closeConnection(connection);
connection = aquireConnection();
try {
result = tryWithConnection(connection, runnable, objects);
} catch (SQLException ex) {
closeConnection(connection);
throw new SecurityException("Could not execute statement", ex);
}
}
synchronized (connections) {
connections.push(connection);
}
return result;
}
private void setObjects(Object... objects) throws SQLException {
private <T> T tryWithConnection(Connection connection, SQLRunnable<T> runnable, Object... objects) throws SQLException {
PreparedStatement st = cachedStatements.get(connection);
if(st == null) {
st = connection.prepareStatement(sql);
cachedStatements.put(connection, st);
}
for (int i = 0; i < objects.length; i++) {
st.setObject(i + 1, objects[i]);
}
return runnable.run(st);
}
@Override
public void close() {
cachedStatements.values().forEach(st -> closeStatement(st, false));
cachedStatements.clear();
synchronized (statements) {
statements.remove(this);
}
}
private void close(Connection connection) {
PreparedStatement st = cachedStatements.remove(connection);
if(st != null)
closeStatement(st, true);
}
private static Connection aquireConnection() {
synchronized (connections) {
if(!connections.isEmpty())
return connections.pop();
}
try {
return DriverManager.getConnection(URL + "?autoReconnect=true&useServerPrepStmts=true", USER, PASSWORD);
} catch (SQLException e) {
throw new SecurityException("Could not open connection", e);
}
}
private static void closeConnection(Connection connection) {
synchronized (statements) {
for (Statement statement : statements) {
statement.close(connection);
}
}
try {
connection.close();
} catch (SQLException e) {
logger.log(Level.INFO, "Could not close connection", e);
}
}
private static void closeStatement(PreparedStatement st, boolean silent) {
try {
st.close();
} catch (SQLException e) {
if(!silent)
logger.log(Level.INFO, "Could not close statement", e);
}
}
public interface ResultSetUser<T> {
@ -150,6 +189,6 @@ public class Statement implements AutoCloseable {
}
private interface SQLRunnable<T> {
T run() throws SQLException;
T run(PreparedStatement st) throws SQLException;
}
}