1"""
2Add component ordering
4@contact: Debian FTP Master <ftpmaster@debian.org>
5@copyright: 2012 Varnish Software AS
6@author: Tollef Fog Heen <tfheen@varnish-software.com>
7@license: GNU General Public License version 2 or later
8"""
10# This program is free software; you can redistribute it and/or modify
11# it under the terms of the GNU General Public License as published by
12# the Free Software Foundation; either version 2 of the License, or
13# (at your option) any later version.
15# This program is distributed in the hope that it will be useful,
16# but WITHOUT ANY WARRANTY; without even the implied warranty of
17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18# GNU General Public License for more details.
20# You should have received a copy of the GNU General Public License
21# along with this program; if not, write to the Free Software
22# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24################################################################################
26import psycopg2
27from daklib.dak_exceptions import DBUpdateError
28from daklib.config import Config
30statements = [
31"""
32ALTER TABLE component
33ADD COLUMN ordering INTEGER UNIQUE
34""",
36"""
37CREATE SEQUENCE component_ordering_seq
38INCREMENT BY 10
39START WITH 100
40OWNED BY component.ordering
41""",
42]
44################################################################################
47def do_update(self):
48 print(__doc__)
49 try:
50 cnf = Config()
52 c = self.db.cursor()
54 for stmt in statements:
55 c.execute(stmt)
57 for component in ('main', 'contrib', 'non-free-firmware', 'non-free'):
58 c.execute("UPDATE component SET ordering = nextval('component_ordering_seq') WHERE name = '{0}'".format(component))
59 c.execute("UPDATE component SET ordering = nextval('component_ordering_seq') WHERE ordering IS NULL")
60 c.execute("""ALTER TABLE component ALTER COLUMN ordering SET NOT NULL""")
61 c.execute("""ALTER TABLE component ALTER COLUMN ordering SET DEFAULT nextval('component_ordering_seq')""")
63 c.execute("UPDATE config SET value = '99' WHERE name = 'db_revision'")
65 self.db.commit()
67 except psycopg2.ProgrammingError as msg:
68 self.db.rollback()
69 raise DBUpdateError('Unable to apply sick update 99, rollback issued. Error message: {0}'.format(msg))