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#!/usr/bin/python -S
# Copyright 2010 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""Populate the DatabaseTableStats and DatabaseCpuStats tables."""
__metaclass__ = type
import _pythonpath
from zope.component import getUtility
from canonical.launchpad.scripts import db_options
from canonical.launchpad.webapp.interfaces import (
IStoreSelector, MAIN_STORE, MASTER_FLAVOR)
from lp.services.scripts.base import LaunchpadCronScript
class UpdateDatabaseStats(LaunchpadCronScript):
"""Populate the DatabaseTableStats and DatabaseCpuStats tables."""
def main(self):
"Run UpdateDatabaseTableStats."""
store = getUtility(IStoreSelector).get(MAIN_STORE, MASTER_FLAVOR)
# The logic is in a stored procedure because we want to run
# ps(1) on the database server rather than the host this script
# is running on.
self.logger.debug("Invoking update_database_stats()")
store.execute("SELECT update_database_stats()", noresult=True)
self.logger.debug("Committing")
store.commit()
def add_my_options(self):
"""Add standard database command line options."""
db_options(self.parser)
if __name__ == '__main__':
script = UpdateDatabaseStats(
'update-database-stats', dbuser='database_stats_update')
script.lock_and_run()
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