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synced 2024-12-24 22:15:33 +00:00
Added a method to create database backups before doing huge database update stuff.
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@ -30,6 +30,7 @@ public class Config {
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public static final String FILE_NAME_AUTH_KEY = "auth.dat";
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public static final String FILE_NAME_DC = "dc.dat";
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public static final String FILE_NAME_DB = "database.sqlite";
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public static final String FILE_NAME_DB_BACKUP = "database.version_%d.backup.sqlite";
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public static final String FILE_FILES_BASE = "files";
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public static final String FILE_STICKER_BASE = "stickers";
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@ -36,6 +36,8 @@ import java.io.IOException;
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import java.util.LinkedList;
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import java.util.LinkedHashMap;
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import java.util.HashMap;
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import java.nio.file.Files;
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import java.nio.file.StandardCopyOption;
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import de.fabianonline.telegram_backup.mediafilemanager.AbstractMediaFileManager;
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import de.fabianonline.telegram_backup.mediafilemanager.FileManagerFactory;
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@ -151,6 +153,7 @@ public class Database {
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version = 5;
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}
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if (version==5) {
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backupDatabase(5);
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System.out.println(" Updating to version 6...");
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stmt.executeUpdate(
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"CREATE TABLE messages_new (\n" +
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@ -239,6 +242,20 @@ public class Database {
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}
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}
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private void backupDatabase(int currentVersion) {
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String filename = String.format(Config.FILE_NAME_DB_BACKUP, currentVersion);
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System.out.println(" Creating a backup of your database as " + filename);
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try {
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Files.copy(
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new File(user_manager.getFileBase() + Config.FILE_NAME_DB).toPath(),
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new File(user_manager.getFileBase() + filename).toPath(),
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StandardCopyOption.REPLACE_EXISTING);
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} catch (IOException e) {
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e.printStackTrace();
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throw new RuntimeException("Could not create backup.");
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}
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}
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public int getTopMessageID() {
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try {
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ResultSet rs = stmt.executeQuery("SELECT MAX(id) FROM messages");
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