ycdl/utilities/database_upgrader.py

119 lines
3.2 KiB
Python

import argparse
import os
import sqlite3
import sys
import bot
import ycdl
def upgrade_1_to_2(ycdldb):
'''
In this version, the `duration` column was added to the videos table.
'''
ycdldb.sql.executescript('''
ALTER TABLE videos RENAME TO videos_old;
CREATE TABLE videos(
id TEXT,
published INT,
author_id TEXT,
title TEXT,
description TEXT,
duration INT,
thumbnail TEXT,
download TEXT
);
INSERT INTO videos SELECT
id,
published,
author_id,
title,
description,
NULL,
thumbnail,
download
FROM videos_old;
DROP TABLE videos_old;
''')
def upgrade_2_to_3(ycdldb):
'''
In this version, the `automark` column was added to the channels table, where
you can set channels to automatically mark videos as ignored or downloaded.
'''
ycdldb.sql.execute('ALTER TABLE channels ADD COLUMN automark TEXT')
def upgrade_3_to_4(ycdldb):
'''
In this version, the `views` column was added to the videos table.
'''
ycdldb.sql.executescript('''
ALTER TABLE videos RENAME TO videos_old;
CREATE TABLE videos(
id TEXT,
published INT,
author_id TEXT,
title TEXT,
description TEXT,
duration INT,
views INT,
thumbnail TEXT,
download TEXT
);
INSERT INTO videos SELECT
id,
published,
author_id,
title,
description,
duration,
NULL,
thumbnail,
download
FROM videos_old;
DROP TABLE videos_old;
''')
def upgrade_all(data_directory):
'''
Given the directory containing a ycdl database, apply all of the
needed upgrade_x_to_y functions in order.
'''
youtube = ycdl.ytapi.Youtube(bot.get_youtube_key())
ycdldb = ycdl.ycdldb.YCDLDB(youtube, data_directory, skip_version_check=True)
cur = ycdldb.sql.cursor()
cur.execute('PRAGMA user_version')
current_version = cur.fetchone()[0]
needed_version = ycdl.constants.DATABASE_VERSION
if current_version == needed_version:
print('Already up to date with version %d.' % needed_version)
return
for version_number in range(current_version + 1, needed_version + 1):
print('Upgrading from %d to %d.' % (current_version, version_number))
upgrade_function = 'upgrade_%d_to_%d' % (current_version, version_number)
upgrade_function = eval(upgrade_function)
upgrade_function(ycdldb)
ycdldb.sql.cursor().execute('PRAGMA user_version = %d' % version_number)
ycdldb.commit()
current_version = version_number
print('Upgrades finished.')
def upgrade_all_argparse(args):
return upgrade_all(data_directory=args.data_directory)
def main(argv):
parser = argparse.ArgumentParser()
parser.add_argument('data_directory')
parser.set_defaults(func=upgrade_all_argparse)
args = parser.parse_args(argv)
return args.func(args)
if __name__ == '__main__':
raise SystemExit(main(sys.argv[1:]))