Change indices for {src,bin}_contents

dak/dakdb/update109.py

+#!/usr/bin/env python
+# coding=utf8
+
+"""
+Change indices for {src,bin}_contents
+
+@contact: Debian FTP Master <ftpmaster@debian.org>
+@copyright: 2015, Ansgar Burchardt <ansgar@debian.org>
+@license: GNU General Public License version 2 or later
+"""
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+################################################################################
+
+import psycopg2
+from daklib.dak_exceptions import DBUpdateError
+from daklib.config import Config
+
+statements = [
+"""
+DROP INDEX IF EXISTS ind_bin_contents_binary
+""",
+"""
+ALTER TABLE bin_contents
+  DROP CONSTRAINT IF EXISTS bin_contents_pkey
+""",
+"""
+CREATE UNIQUE INDEX bin_contents_pkey
+  ON bin_contents (binary_id, file) WITH (fillfactor = 80)
+""",
+"""
+ALTER TABLE bin_contents
+  ADD PRIMARY KEY USING INDEX bin_contents_pkey
+""",
+"""
+CLUSTER bin_contents USING bin_contents_pkey
+""",
+"""
+DROP INDEX IF EXISTS src_contents_source_id_idx
+""",
+"""
+ALTER TABLE src_contents
+  DROP CONSTRAINT IF EXISTS src_contents_pkey
+""",
+"""
+CREATE UNIQUE INDEX src_contents_pkey
+  ON src_contents (source_id, file) WITH (fillfactor = 80)
+""",
+"""
+ALTER TABLE src_contents
+  ADD PRIMARY KEY USING INDEX src_contents_pkey
+""",
+"""
+CLUSTER src_contents USING src_contents_pkey
+""",
+]
+
+################################################################################
+def do_update(self):
+    print __doc__
+    try:
+        cnf = Config()
+
+        c = self.db.cursor()
+
+        for stmt in statements:
+            c.execute(stmt)
+
+        c.execute("UPDATE config SET value = '109' WHERE name = 'db_revision'")
+        self.db.commit()
+
+    except psycopg2.ProgrammingError as msg:
+        self.db.rollback()
+        raise DBUpdateError('Unable to apply sick update 109, rollback issued. Error message: {0}'.format(msg))