Add 2 partial indexes to db to speed up dak rm.

Signed-off-by: NTorsten Werner <twerner@debian.org>

dak/dakdb/update66.py

+#!/usr/bin/env python
+# coding=utf8
+
+"""
+Add 2 partial indexes to speed up dak rm.
+
+@contact: Debian FTP Master <ftpmaster@debian.org>
+@copyright: 2011 Torsten Werner <twerner@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
+
+################################################################################
+def do_update(self):
+    """
+    Add 2 partial indexes to speed up dak rm.
+    """
+    print __doc__
+    try:
+        cnf = Config()
+
+        c = self.db.cursor()
+
+        # partial index for Depends
+        c.execute("SELECT key_id FROM metadata_keys WHERE key = 'Depends'")
+        key = c.fetchone()[0]
+        c.execute("""CREATE INDEX binaries_metadata_depends
+            ON binaries_metadata (bin_id) WHERE key_id = %d""" % key)
+
+        # partial index for Provides
+        c.execute("SELECT key_id FROM metadata_keys WHERE key = 'Provides'")
+        key = c.fetchone()[0]
+        c.execute("""CREATE INDEX binaries_metadata_provides
+            ON binaries_metadata (bin_id) WHERE key_id = %d""" % key)
+
+        c.execute("UPDATE config SET value = '66' WHERE name = 'db_revision'")
+        self.db.commit()
+
+    except psycopg2.ProgrammingError, msg:
+        self.db.rollback()
+        raise DBUpdateError, 'Unable to apply sick update 66, rollback issued. Error message : %s' % (str(msg))

dak/update_db.py

@@ -46,7 +46,7 @@ from daklib.daklog import Logger
 ################################################################################
 
 Cnf = None
-required_database_schema = 65
+required_database_schema = 66
 
 ################################################################################
 

daklib/dbconn.py

@@ -81,6 +81,9 @@ import warnings
 warnings.filterwarnings('ignore', \
     "The SQLAlchemy PostgreSQL dialect has been renamed from 'postgres' to 'postgresql'.*", \
     SADeprecationWarning)
+warnings.filterwarnings('ignore', \
+    "Predicate of partial index .* ignored during reflection", \
+    SAWarning)
 
 
 ################################################################################