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/*
* Copyright (C) 2021 - 2022 Elytrium
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package net.elytrium.limboauth.dependencies;
import com.j256.ormlite.jdbc.JdbcSingleConnectionSource;
import com.j256.ormlite.support.ConnectionSource;
import java.lang.reflect.Constructor;
import java.lang.reflect.Method;
import java.net.URL;
import java.nio.file.Files;
import java.nio.file.Path;
import java.sql.Connection;
import java.sql.Driver;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.Properties;
public enum DatabaseLibrary {
H2_LEGACY_V1(
BaseLibrary.H2_V1,
(classLoader, dir, jdbc, user, password) -> fromDriver(classLoader.loadClass("org.h2.Driver"), jdbc, null, null, false),
(dir, hostname, database) -> "jdbc:h2:" + dir + "/limboauth"
),
H2(
BaseLibrary.H2_V2,
(classLoader, dir, jdbc, user, password) -> {
Connection modernConnection = fromDriver(classLoader.loadClass("org.h2.Driver"), jdbc, null, null, true);
Path legacyDatabase = dir.resolve("limboauth.mv.db");
if (Files.exists(legacyDatabase)) {
Path dumpFile = dir.resolve("limboauth.dump.sql");
try (Connection legacyConnection = H2_LEGACY_V1.connect(dir, null, null, user, password)) {
try (Statement migrateStatement = legacyConnection.createStatement()) {
migrateStatement.execute("SCRIPT TO '" + dumpFile + "'");
}
}
try (Statement migrateStatement = modernConnection.createStatement()) {
migrateStatement.execute("RUNSCRIPT FROM '" + dumpFile + "'");
}
Files.delete(dumpFile);
Files.move(legacyDatabase, dir.resolve("limboauth-v1-backup.mv.db"));
}
return modernConnection;
},
(dir, hostname, database) -> "jdbc:h2:" + dir + "/limboauth-v2"
),
MYSQL(
BaseLibrary.MYSQL,
(classLoader, dir, jdbc, user, password)
-> fromDriver(classLoader.loadClass("com.mysql.cj.jdbc.NonRegisteringDriver"), jdbc, user, password, true),
(dir, hostname, database) ->
"jdbc:mysql://" + hostname + "/" + database
),
POSTGRESQL(
BaseLibrary.POSTGRESQL,
(classLoader, dir, jdbc, user, password) -> fromDriver(classLoader.loadClass("org.postgresql.Driver"), jdbc, user, password, true),
(dir, hostname, database) -> "jdbc:postgresql://" + hostname + "/" + database
),
SQLITE(
BaseLibrary.SQLITE,
(classLoader, dir, jdbc, user, password) -> fromDriver(classLoader.loadClass("org.sqlite.JDBC"), jdbc, user, password, true),
(dir, hostname, database) -> "jdbc:sqlite:" + dir + "/limboauth.db"
);
private final BaseLibrary baseLibrary;
private final DatabaseConnector connector;
private final DatabaseStringGetter stringGetter;
DatabaseLibrary(BaseLibrary baseLibrary, DatabaseConnector connector, DatabaseStringGetter stringGetter) {
this.baseLibrary = baseLibrary;
this.connector = connector;
this.stringGetter = stringGetter;
}
public Connection connect(ClassLoader classLoader, Path dir, String hostname, String database, String user, String password) throws Exception {
return this.connect(classLoader, dir, this.stringGetter.getJdbcString(dir, hostname, database), user, password);
}
public Connection connect(Path dir, String hostname, String database, String user, String password) throws Exception {
return this.connect(dir, this.stringGetter.getJdbcString(dir, hostname, database), user, password);
}
public Connection connect(ClassLoader classLoader, Path dir, String jdbc, String user, String password) throws Exception {
return this.connector.connect(classLoader, dir, jdbc, user, password);
}
public Connection connect(Path dir, String jdbc, String user, String password) throws Exception {
return this.connector.connect(new IsolatedClassLoader(new URL[]{this.baseLibrary.getClassLoaderURL()}), dir, jdbc, user, password);
}
public ConnectionSource connectToORM(Path dir, String hostname, String database, String user, String password) throws Exception {
String jdbc = this.stringGetter.getJdbcString(dir, hostname, database);
URL baseLibraryURL = this.baseLibrary.getClassLoaderURL();
ClassLoader currentClassLoader = DatabaseLibrary.class.getClassLoader();
Method addPath = currentClassLoader.getClass().getDeclaredMethod("addPath", Path.class);
addPath.setAccessible(true);
addPath.invoke(currentClassLoader, Path.of(baseLibraryURL.toURI()));
return new JdbcSingleConnectionSource(jdbc, this.connect(currentClassLoader, dir, jdbc, hostname, user, password));
}
private static Connection fromDriver(Class<?> connectionClass, String jdbc, String user, String password, boolean register) throws Exception {
Constructor<?> legacyConstructor = connectionClass.getConstructor();
Properties info = new Properties();
if (user != null) {
info.put("user", user);
}
if (password != null) {
info.put("password", password);
}
Object driver = legacyConstructor.newInstance();
DriverManager.deregisterDriver((Driver) driver);
if (register) {
DriverManager.registerDriver((Driver) driver);
}
Method connect = connectionClass.getDeclaredMethod("connect", String.class, Properties.class);
connect.setAccessible(true);
return (Connection) connect.invoke(driver, jdbc, info);
}
public interface DatabaseConnector {
Connection connect(ClassLoader classLoader, Path dir, String jdbc, String user, String password) throws Exception;
}
public interface DatabaseStringGetter {
String getJdbcString(Path dir, String hostname, String database);
}
}
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