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
28from daklib.dak_exceptions import DBUpdateError
30statements = [
31 """
32ALTER TABLE component
33ADD COLUMN ordering INTEGER UNIQUE
34""",
35 """
36CREATE SEQUENCE component_ordering_seq
37INCREMENT BY 10
38START WITH 100
39OWNED BY component.ordering
40""",
41]
43################################################################################
46def do_update(self):
47 print(__doc__)
48 try:
49 c = self.db.cursor()
51 for stmt in statements:
52 c.execute(stmt)
54 for component in ("main", "contrib", "non-free-firmware", "non-free"):
55 c.execute(
56 "UPDATE component SET ordering = nextval('component_ordering_seq') WHERE name = '{0}'".format(
57 component
58 )
59 )
60 c.execute(
61 "UPDATE component SET ordering = nextval('component_ordering_seq') WHERE ordering IS NULL"
62 )
63 c.execute("""ALTER TABLE component ALTER COLUMN ordering SET NOT NULL""")
64 c.execute(
65 """ALTER TABLE component ALTER COLUMN ordering SET DEFAULT nextval('component_ordering_seq')"""
66 )
68 c.execute("UPDATE config SET value = '99' WHERE name = 'db_revision'")
70 self.db.commit()
72 except psycopg2.ProgrammingError as msg:
73 self.db.rollback()
74 raise DBUpdateError(
75 "Unable to apply sick update 99, rollback issued. Error message: {0}".format(
76 msg
77 )
78 )