[crypto] Use Cryptodome namespace instead of Crypto
PyCryptodome comes in two flavors: “an almost drop-in replacement for the old
PyCrypto library” and “a library independent of the old PyCrypto”. The former
uses the Crypto namespace, and is shipped as `pycryptodome` while the latter
uses Cryptodome instead and lies in the `pycryptodomex` package.
Given the reason to switch to PyCryptodome is that PyCrypto in unmaintained,
its probably better to avoid any mistake and mandate the specific usage of
the Cryptodome namespace by requiring `pycryptodomex` instead of
`pycryptodome`.
A more present reason is that Debian buster will only provide a package
with the separate namespace flavor. The current Recommends is not working with
the current code. Although it's important to note that the package name will
probably have to be changed to `python3-pycryptodomex` once
https://bugs.debian.org/886291 is solved.
# copyright 2003-2014 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"""
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):
if not self.repo.has_scheduler():
return
# 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.utcnow() - lifetime
with repo.internal_cnx() as cnx:
cnx.system_sql(
'DELETE FROM transactions WHERE tx_time < %(time)s',
{'time': mindate})
cnx.commit()
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):
if not self.repo.has_scheduler():
return
def update_feeds(repo):
# take a list to avoid iterating on a dictionary whose size may
# change
for uri, source in repo.sources_by_uri.items():
if (uri == 'system'
or not repo.config.source_enabled(source)
or not source.config['synchronize']):
continue
with repo.internal_cnx() as cnx:
try:
source.pull_data(cnx)
except Exception as exc:
cnx.exception('while trying to update feed %s', source)
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):
if not self.repo.has_scheduler():
return
def expire_dataimports(repo=self.repo):
for uri, source in repo.sources_by_uri.items():
if (uri == 'system'
or not repo.config.source_enabled(source)):
continue
with repo.internal_cnx() as cnx:
mindate = datetime.utcnow() - timedelta(seconds=source.config['logs-lifetime'])
cnx.execute('DELETE CWDataImport X WHERE X start_timestamp < %(time)s',
{'time': mindate})
cnx.commit()
self.repo.looping_task(60*60*24, expire_dataimports, self.repo)