~launchpad-pqm/launchpad/devel

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#!/usr/bin/python -S
#
# Copyright 2009 Canonical Ltd.  This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).

# pylint: disable-msg=C0103,W0403

# This script updates the cached stats in the system

import _pythonpath

from zope.component import getUtility
from canonical.database.sqlbase import ISOLATION_LEVEL_READ_COMMITTED
from lp.services.scripts.base import LaunchpadCronScript
from canonical.launchpad.interfaces import (
    IDistributionSet, ILaunchpadStatisticSet, IPersonSet
    )
from canonical.config import config


class StatUpdater(LaunchpadCronScript):
    def main(self):
        self.txn.set_isolation_level(ISOLATION_LEVEL_READ_COMMITTED)

        self.logger.debug('Starting the stats update')

        # Note that we do not issue commits here in the script; content
        # objects are responsible for committing.
        distroset = getUtility(IDistributionSet)
        for distro in distroset:
            for distroseries in distro.series:
                distroseries.updateStatistics(self.txn)

        launchpad_stats = getUtility(ILaunchpadStatisticSet)
        launchpad_stats.updateStatistics(self.txn)

        getUtility(IPersonSet).updateStatistics(self.txn)

        self.logger.debug('Finished the stats update')


if __name__ == '__main__':
    script = StatUpdater('launchpad-stats',
                         dbuser=config.statistician.dbuser)
    script.lock_and_run()