# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""core hooks registering some maintainance tasks as server startup time"""
__docformat__ = "restructuredtext en"
from datetime import timedelta, datetime
from cubicweb.server import hook
class TransactionsCleanupStartupHook(hook.Hook):
"""start task to cleanup transaction data"""
__regid__ = 'cw.looping-tasks.transactions-cleanup'
events = ('server_startup',)
def __call__(self):
# XXX use named args and inner functions to avoid referencing globals
# which may cause reloading pb
lifetime = timedelta(days=self.repo.config['keep-transaction-lifetime'])
def cleanup_old_transactions(repo=self.repo, lifetime=lifetime):
mindate = datetime.now() - lifetime
session = repo.internal_session()
try:
session.system_sql(
'DELETE FROM transactions WHERE tx_time < %(time)s',
{'time': mindate})
session.commit()
finally:
session.close()
if self.repo.config['undo-enabled']:
self.repo.looping_task(60*60*24, cleanup_old_transactions,
self.repo)
class UpdateFeedsStartupHook(hook.Hook):
"""start task to update datafeed based sources"""
__regid__ = 'cw.looping-tasks.update-feeds'
events = ('server_startup',)
def __call__(self):
def update_feeds(repo):
# take a list to avoid iterating on a dictionary whose size may
# change
for uri, source in list(repo.sources_by_uri.iteritems()):
if (uri == 'system'
or not repo.config.source_enabled(source)
or not source.config['synchronize']):
continue
session = repo.internal_session(safe=True)
try:
source.pull_data(session)
except Exception as exc:
session.exception('while trying to update feed %s', source)
finally:
session.close()
self.repo.looping_task(60, update_feeds, self.repo)
class DataImportsCleanupStartupHook(hook.Hook):
"""start task to cleanup old data imports (ie datafeed import logs)"""
__regid__ = 'cw.looping-tasks.dataimports-cleanup'
events = ('server_startup',)
def __call__(self):
def expire_dataimports(repo=self.repo):
for uri, source in repo.sources_by_uri.iteritems():
if (uri == 'system'
or not repo.config.source_enabled(source)):
continue
session = repo.internal_session()
try:
mindate = datetime.now() - timedelta(seconds=source.config['logs-lifetime'])
session.execute('DELETE CWDataImport X WHERE X start_timestamp < %(time)s',
{'time': mindate})
session.commit()
finally:
session.close()
self.repo.looping_task(60*60*24, expire_dataimports, self.repo)