trac/upgrades/db20.py
# -*- coding: utf-8 -*-
#
# Copyright (C) 2007-2023 Edgewall Software
# All rights reserved.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://trac.edgewall.org/wiki/TracLicense.
#
# This software consists of voluntary contributions made by many
# individuals. For the exact contribution history, see the revision
# history and logs, available at https://trac.edgewall.org/.
from trac.versioncontrol.cache import CACHE_YOUNGEST_REV
def do_upgrade(env, ver, cursor):
"""Modify the repository cache scheme (if needed)
Now we use the 'youngest_rev' entry in the system table
to explicitly store the youngest rev in the cache.
"""
youngest = ''
cursor.execute("SELECT value FROM system WHERE name='repository_dir'")
for repository_dir, in cursor:
if repository_dir.startswith('svn:'):
cursor.execute("SELECT rev FROM revision "
"ORDER BY -LENGTH(rev), rev DESC LIMIT 1")
row = cursor.fetchone()
youngest = row and row[0] or ''
else:
print('Please perform a "repository resync" after this upgrade.')
# deleting first, for the 0.11dev and 0.10.4dev users
cursor.execute("DELETE FROM system WHERE name=%s",
(CACHE_YOUNGEST_REV,))
cursor.execute("INSERT INTO system (name, value) VALUES (%s, %s)",
(CACHE_YOUNGEST_REV, youngest))