mirror of
https://github.com/fabianonline/telegram_backup.git
synced 2024-11-22 08:46:15 +00:00
Moved Dabase changes into their own class.
This commit is contained in:
parent
ac67818d28
commit
0b95b42607
@ -47,8 +47,8 @@ import de.fabianonline.telegram_backup.mediafilemanager.FileManagerFactory;
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public class Database {
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private Connection conn;
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private Statement stmt;
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private UserManager user_manager;
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private TelegramClient client;
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public UserManager user_manager;
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public TelegramClient client;
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public Database(UserManager user_manager, TelegramClient client) {
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this(user_manager, client, true);
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@ -81,176 +81,20 @@ public class Database {
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private void init(boolean update_db) {
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if (!update_db) return;
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try {
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int version;
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ResultSet rs = stmt.executeQuery("SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='database_versions'");
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rs.next();
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if (rs.getInt(1)==0) {
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version = 0;
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} else {
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rs.close();
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rs = stmt.executeQuery("SELECT MAX(version) FROM database_versions");
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rs.next();
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version = rs.getInt(1);
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rs.close();
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}
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System.out.println("Database version: " + version);
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if (version==0) {
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System.out.println(" Updating to version 1...");
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stmt.executeUpdate("CREATE TABLE messages ("
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+ "id INTEGER PRIMARY KEY ASC, "
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+ "dialog_id INTEGER, "
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+ "to_id INTEGER, "
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+ "from_id INTEGER, "
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+ "from_type TEXT, "
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+ "text TEXT, "
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+ "time TEXT, "
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+ "has_media BOOLEAN, "
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+ "sticker TEXT, "
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+ "data BLOB,"
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+ "type TEXT)");
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stmt.executeUpdate("CREATE TABLE dialogs ("
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+ "id INTEGER PRIMARY KEY ASC, "
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+ "name TEXT, "
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+ "type TEXT)");
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stmt.executeUpdate("CREATE TABLE people ("
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+ "id INTEGER PRIMARY KEY ASC, "
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+ "first_name TEXT, "
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+ "last_name TEXT, "
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+ "username TEXT, "
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+ "type TEXT)");
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stmt.executeUpdate("CREATE TABLE database_versions ("
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+ "version INTEGER)");
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stmt.executeUpdate("INSERT INTO database_versions (version) VALUES (1)");
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version = 1;
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}
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if (version==1) {
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System.out.println(" Updating to version 2...");
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stmt.executeUpdate("ALTER TABLE people RENAME TO 'users'");
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stmt.executeUpdate("ALTER TABLE users ADD COLUMN phone TEXT");
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stmt.executeUpdate("INSERT INTO database_versions (version) VALUES (2)");
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version = 2;
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}
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if (version==2) {
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System.out.println(" Updating to version 3...");
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stmt.executeUpdate("ALTER TABLE dialogs RENAME TO 'chats'");
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stmt.executeUpdate("INSERT INTO database_versions (version) VALUES (3)");
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version = 3;
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}
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if (version==3) {
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System.out.println(" Updating to version 4...");
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stmt.executeUpdate("CREATE TABLE messages_new (id INTEGER PRIMARY KEY ASC, dialog_id INTEGER, to_id INTEGER, from_id INTEGER, from_type TEXT, text TEXT, time INTEGER, has_media BOOLEAN, sticker TEXT, data BLOB, type TEXT);");
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stmt.executeUpdate("INSERT INTO messages_new SELECT * FROM messages");
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stmt.executeUpdate("DROP TABLE messages");
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stmt.executeUpdate("ALTER TABLE messages_new RENAME TO 'messages'");
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stmt.executeUpdate("INSERT INTO database_versions (version) VALUES (4)");
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version = 4;
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}
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if (version==4) {
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System.out.println(" Updating to version 5...");
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stmt.executeUpdate("CREATE TABLE runs (id INTEGER PRIMARY KEY ASC, time INTEGER, start_id INTEGER, end_id INTEGER, count_missing INTEGER)");
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stmt.executeUpdate("INSERT INTO database_versions (version) VALUES (5)");
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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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" id INTEGER PRIMARY KEY ASC,\n" +
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" message_type TEXT,\n" +
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" dialog_id INTEGER,\n" +
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" chat_id INTEGER,\n" +
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" sender_id INTEGER,\n" +
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" fwd_from_id INTEGER,\n" +
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" text TEXT,\n" +
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" time INTEGER,\n" +
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" has_media BOOLEAN,\n" +
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" media_type TEXT,\n" +
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" media_file TEXT,\n" +
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" media_size INTEGER,\n" +
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" media_json TEXT,\n" +
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" markup_json TEXT,\n" +
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" data BLOB)");
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LinkedHashMap<String, String> mappings = new LinkedHashMap<String, String>();
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mappings.put("id", "id");
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mappings.put("message_type", "type");
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mappings.put("dialog_id", "CASE from_type WHEN 'user' THEN dialog_id ELSE NULL END");
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mappings.put("chat_id", "CASE from_type WHEN 'chat' THEN dialog_id ELSE NULL END");
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mappings.put("sender_id", "from_id");
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mappings.put("text", "text");
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mappings.put("time", "time");
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mappings.put("has_media", "has_media");
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mappings.put("data", "data");
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StringBuilder query = new StringBuilder("INSERT INTO messages_new\n(");
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boolean first;
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first = true;
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for(String s : mappings.keySet()) {
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if (!first) query.append(", ");
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query.append(s);
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first = false;
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}
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query.append(")\nSELECT \n");
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first = true;
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for (String s : mappings.values()) {
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if (!first) query.append(", ");
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query.append(s);
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first = false;
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}
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query.append("\nFROM messages");
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stmt.executeUpdate(query.toString());
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System.out.println(" Updating the data (this might take some time)...");
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rs = stmt.executeQuery("SELECT id, data FROM messages_new");
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PreparedStatement ps = conn.prepareStatement("UPDATE messages_new SET fwd_from_id=?, media_type=?, media_file=?, media_size=? WHERE id=?");
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while (rs.next()) {
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ps.setInt(5, rs.getInt(1));
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TLMessage msg = bytesToTLMessage(rs.getBytes(2));
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if (msg==null || msg.getFwdFromId()==null || ! (msg.getFwdFromId() instanceof TLPeerUser)) {
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ps.setNull(1, Types.INTEGER);
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} else {
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ps.setInt(1, ((TLPeerUser)msg.getFwdFromId()).getUserId());
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}
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AbstractMediaFileManager f = FileManagerFactory.getFileManager(msg, user_manager, client);
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if (f==null) {
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ps.setNull(2, Types.VARCHAR);
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ps.setNull(3, Types.VARCHAR);
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ps.setNull(4, Types.INTEGER);
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} else {
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ps.setString(2, f.getName());
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ps.setString(3, f.getTargetFilename());
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ps.setInt(4, f.getSize());
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}
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ps.addBatch();
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}
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rs.close();
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conn.setAutoCommit(false);
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ps.executeBatch();
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conn.commit();
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conn.setAutoCommit(true);
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stmt.executeUpdate("DROP TABLE messages");
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stmt.executeUpdate("ALTER TABLE messages_new RENAME TO messages");
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stmt.executeUpdate("INSERT INTO database_versions (version) VALUES (6)");
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version = 6;
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}
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} catch (SQLException e) {
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System.out.println(e.getSQLState());
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throw new RuntimeException(e);
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}
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DatabaseUpdates updates = new DatabaseUpdates(conn, this);
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updates.doUpdates();
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}
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private void backupDatabase(int currentVersion) {
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public 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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String src = user_manager.getFileBase() + Config.FILE_NAME_DB;
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String dst = user_manager.getFileBase() + filename;
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Log.debug("Copying %s to %s", src, dst);
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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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new File(src).toPath(),
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new File(dst).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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@ -0,0 +1,296 @@
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package de.fabianonline.telegram_backup;
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import java.util.HashMap;
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import java.util.LinkedHashMap;
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import java.util.LinkedList;
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import java.sql.Connection;
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import java.sql.SQLException;
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import java.sql.Statement;
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import java.sql.Types;
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import java.sql.ResultSet;
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import java.sql.PreparedStatement;
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import com.github.badoualy.telegram.tl.api.*;
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import de.fabianonline.telegram_backup.mediafilemanager.FileManagerFactory;
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import de.fabianonline.telegram_backup.mediafilemanager.AbstractMediaFileManager;
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public class DatabaseUpdates {
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protected Connection conn;
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protected Database db;
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private static LinkedList<DatabaseUpdate> updates = new LinkedList<DatabaseUpdate>();
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public DatabaseUpdates(Connection conn, Database db) {
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this.conn = conn;
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this.db = db;
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Log.debug("Registering Database Updates...");
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Log.up();
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register(new DB_Update_1(conn, db));
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register(new DB_Update_2(conn, db));
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register(new DB_Update_3(conn, db));
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register(new DB_Update_4(conn, db));
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register(new DB_Update_5(conn, db));
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register(new DB_Update_6(conn, db));
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Log.down();
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}
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public void doUpdates() {
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try {
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Statement stmt = conn.createStatement();
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ResultSet rs;
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Log.debug("DatabaseUpdate.doUpdates running");
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Log.up();
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Log.debug("Getting current database version");
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Log.up();
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int version;
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Log.debug("Checking if table database_versions exists");
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rs = stmt.executeQuery("SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name='database_versions'");
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rs.next();
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if (rs.getInt(1)==0) {
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Log.debug("Table does not exist");
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version = 0;
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} else {
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Log.debug("Table exists. Checking max version");
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rs.close();
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rs = stmt.executeQuery("SELECT MAX(version) FROM database_versions");
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rs.next();
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version = rs.getInt(1);
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rs.close();
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}
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Log.debug("version: %d", version);
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Log.down();
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System.out.println("Database version: " + version);
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Log.debug("Max available database version is %d", getMaxPossibleVersion());
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if (version < getMaxPossibleVersion()) {
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Log.debug("Update is necessary. %d => %d.", version, getMaxPossibleVersion());
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boolean backup = false;
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for (int i=version+1; i<=getMaxPossibleVersion(); i++) {
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if (getUpdateToVersion(i).needsBackup()) {
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Log.debug("Update to version %d needs a backup", i);
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backup=true;
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}
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}
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if (backup) {
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Log.debug("Performing backup");
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Log.up();
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db.backupDatabase(version);
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Log.down();
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}
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Log.debug("Applying updates");
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Log.up();
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try {
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for (int i=version+1; i<=getMaxPossibleVersion(); i++) {
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Log.up();
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getUpdateToVersion(i).doUpdate();
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Log.down();
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}
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} catch (SQLException e) { throw new RuntimeException(e); }
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Log.down();
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} else {
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Log.debug("No update necessary.");
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}
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Log.down();
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} catch (SQLException e) {
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throw new RuntimeException(e);
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}
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}
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private DatabaseUpdate getUpdateToVersion(int i) { return updates.get(i); }
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private int getMaxPossibleVersion() {
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return updates.size();
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}
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private void register(DatabaseUpdate d) {
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Log.debug("Registering %s as update to version %d", d.getClass().getName(), d.getVersion());
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if (d.getVersion() != updates.size()+1) {
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throw new RuntimeException("Tried to register DB update to version " + d.getVersion() + ", but would need update to version " + (updates.size()+1));
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}
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updates.add(d);
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}
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}
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abstract class DatabaseUpdate {
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protected Connection conn;
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protected Statement stmt;
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protected Database db;
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public DatabaseUpdate(Connection conn, Database db) {
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this.conn = conn;
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try {
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stmt = conn.createStatement();
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} catch (SQLException e) { throw new RuntimeException(e); }
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this.db = db;
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}
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public void doUpdate() throws SQLException {
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Log.debug("Applying update to version %d", getVersion());
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System.out.println(" Updating to version " + getVersion() + "...");
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Log.up();
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_doUpdate();
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Log.down();
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Log.debug("Saving current database version to the db");
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stmt.executeUpdate("INSERT INTO database_versions (version) VALUES (" + getVersion() + ")");
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}
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protected abstract void _doUpdate() throws SQLException;
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public abstract int getVersion();
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public boolean needsBackup() { return false; }
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}
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class DB_Update_1 extends DatabaseUpdate {
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public int getVersion() { return 1; }
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public DB_Update_1(Connection conn, Database db) { super(conn, db); }
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protected void _doUpdate() throws SQLException {
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stmt.executeUpdate("CREATE TABLE messages ("
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+ "id INTEGER PRIMARY KEY ASC, "
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+ "dialog_id INTEGER, "
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+ "to_id INTEGER, "
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+ "from_id INTEGER, "
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+ "from_type TEXT, "
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+ "text TEXT, "
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+ "time TEXT, "
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+ "has_media BOOLEAN, "
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+ "sticker TEXT, "
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+ "data BLOB,"
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+ "type TEXT)");
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stmt.executeUpdate("CREATE TABLE dialogs ("
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+ "id INTEGER PRIMARY KEY ASC, "
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+ "name TEXT, "
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+ "type TEXT)");
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stmt.executeUpdate("CREATE TABLE people ("
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+ "id INTEGER PRIMARY KEY ASC, "
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+ "first_name TEXT, "
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+ "last_name TEXT, "
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+ "username TEXT, "
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+ "type TEXT)");
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stmt.executeUpdate("CREATE TABLE database_versions ("
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+ "version INTEGER)");
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}
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}
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class DB_Update_2 extends DatabaseUpdate {
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public int getVersion() { return 2; }
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public DB_Update_2(Connection conn, Database db) { super(conn, db); }
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protected void _doUpdate() throws SQLException {
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stmt.executeUpdate("ALTER TABLE people RENAME TO 'users'");
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stmt.executeUpdate("ALTER TABLE users ADD COLUMN phone TEXT");
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}
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}
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class DB_Update_3 extends DatabaseUpdate {
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public int getVersion() { return 3; }
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public DB_Update_3(Connection conn, Database db) { super(conn, db); }
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protected void _doUpdate() throws SQLException {
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stmt.executeUpdate("ALTER TABLE dialogs RENAME TO 'chats'");
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}
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}
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class DB_Update_4 extends DatabaseUpdate {
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public int getVersion() { return 4; }
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public DB_Update_4(Connection conn, Database db) { super(conn, db); }
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protected void _doUpdate() throws SQLException {
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stmt.executeUpdate("CREATE TABLE messages_new (id INTEGER PRIMARY KEY ASC, dialog_id INTEGER, to_id INTEGER, from_id INTEGER, from_type TEXT, text TEXT, time INTEGER, has_media BOOLEAN, sticker TEXT, data BLOB, type TEXT);");
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stmt.executeUpdate("INSERT INTO messages_new SELECT * FROM messages");
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stmt.executeUpdate("DROP TABLE messages");
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stmt.executeUpdate("ALTER TABLE messages_new RENAME TO 'messages'");
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}
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}
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class DB_Update_5 extends DatabaseUpdate {
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public int getVersion() { return 5; }
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public DB_Update_5(Connection conn, Database db) { super(conn, db); }
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protected void _doUpdate() throws SQLException {
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stmt.executeUpdate("CREATE TABLE runs (id INTEGER PRIMARY KEY ASC, time INTEGER, start_id INTEGER, end_id INTEGER, count_missing INTEGER)");
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}
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}
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class DB_Update_6 extends DatabaseUpdate {
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public int getVersion() { return 6; }
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public DB_Update_6(Connection conn, Database db) { super(conn, db); }
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public boolean needsBackup() { return true; }
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protected void _doUpdate() throws SQLException {
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stmt.executeUpdate(
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"CREATE TABLE messages_new (\n" +
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" id INTEGER PRIMARY KEY ASC,\n" +
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" message_type TEXT,\n" +
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" dialog_id INTEGER,\n" +
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" chat_id INTEGER,\n" +
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" sender_id INTEGER,\n" +
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" fwd_from_id INTEGER,\n" +
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" text TEXT,\n" +
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" time INTEGER,\n" +
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" has_media BOOLEAN,\n" +
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" media_type TEXT,\n" +
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" media_file TEXT,\n" +
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" media_size INTEGER,\n" +
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" media_json TEXT,\n" +
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" markup_json TEXT,\n" +
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" data BLOB)");
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LinkedHashMap<String, String> mappings = new LinkedHashMap<String, String>();
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mappings.put("id", "id");
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mappings.put("message_type", "type");
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mappings.put("dialog_id", "CASE from_type WHEN 'user' THEN dialog_id ELSE NULL END");
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mappings.put("chat_id", "CASE from_type WHEN 'chat' THEN dialog_id ELSE NULL END");
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mappings.put("sender_id", "from_id");
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mappings.put("text", "text");
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mappings.put("time", "time");
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mappings.put("has_media", "has_media");
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mappings.put("data", "data");
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StringBuilder query = new StringBuilder("INSERT INTO messages_new\n(");
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boolean first;
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first = true;
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for(String s : mappings.keySet()) {
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if (!first) query.append(", ");
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query.append(s);
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first = false;
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}
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query.append(")\nSELECT \n");
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first = true;
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for (String s : mappings.values()) {
|
||||
if (!first) query.append(", ");
|
||||
query.append(s);
|
||||
first = false;
|
||||
}
|
||||
query.append("\nFROM messages");
|
||||
stmt.executeUpdate(query.toString());
|
||||
|
||||
System.out.println(" Updating the data (this might take some time)...");
|
||||
ResultSet rs = stmt.executeQuery("SELECT id, data FROM messages_new");
|
||||
PreparedStatement ps = conn.prepareStatement("UPDATE messages_new SET fwd_from_id=?, media_type=?, media_file=?, media_size=? WHERE id=?");
|
||||
while (rs.next()) {
|
||||
ps.setInt(5, rs.getInt(1));
|
||||
TLMessage msg = db.bytesToTLMessage(rs.getBytes(2));
|
||||
if (msg==null || msg.getFwdFromId()==null || ! (msg.getFwdFromId() instanceof TLPeerUser)) {
|
||||
ps.setNull(1, Types.INTEGER);
|
||||
} else {
|
||||
ps.setInt(1, ((TLPeerUser)msg.getFwdFromId()).getUserId());
|
||||
}
|
||||
AbstractMediaFileManager f = FileManagerFactory.getFileManager(msg, db.user_manager, db.client);
|
||||
if (f==null) {
|
||||
ps.setNull(2, Types.VARCHAR);
|
||||
ps.setNull(3, Types.VARCHAR);
|
||||
ps.setNull(4, Types.INTEGER);
|
||||
} else {
|
||||
ps.setString(2, f.getName());
|
||||
ps.setString(3, f.getTargetFilename());
|
||||
ps.setInt(4, f.getSize());
|
||||
}
|
||||
ps.addBatch();
|
||||
}
|
||||
rs.close();
|
||||
conn.setAutoCommit(false);
|
||||
ps.executeBatch();
|
||||
conn.commit();
|
||||
conn.setAutoCommit(true);
|
||||
stmt.executeUpdate("DROP TABLE messages");
|
||||
stmt.executeUpdate("ALTER TABLE messages_new RENAME TO messages");
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user