[rtags] Allow to 'derive' rtags
Since some releases, rtags (structure underlying uicfg) have selector and may be
copied using something like:
new_rtags = deepcopy(original_rtags)
new_rtags.__module__ = __name__
new_rtags.__select__ = custom_selector
The problem is that starting from that, both rtags wil diverge and changes in
original_rtags won't be considered, while we usually want to set a few specific
rules only in new_rtags. To fix this problem, this cset introduces the notion of
"derivated/parent" rtag, eg:
new_rtags = original_rtags.derive(__name__, custom_selector)
Beside easier copying, when using the above method changes in original_rtags
which are not overriden by new_rtags will be considered since it only hold its
specific rules but look among its parent chain for non-found keys.
Along the way, flake8 unittest_rtags.
Closes #16164880
# -*- coding: utf-8 -*-
# copyright 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/>.
from cubicweb.server import hook
class ZMQStopHook(hook.Hook):
__regid__ = 'zmqstop'
events = ('server_shutdown',)
def __call__(self):
self.repo.app_instances_bus.stop()
class ZMQStartHook(hook.Hook):
__regid__ = 'zmqstart'
events = ('server_startup',)
order = -1
def __call__(self):
config = self.repo.config
address_pub = config.get('zmq-address-pub')
address_sub = config.get('zmq-address-sub')
if not address_pub and not address_sub:
return
from cubicweb.server import cwzmq
self.repo.app_instances_bus = cwzmq.ZMQComm()
if address_pub:
self.repo.app_instances_bus.add_publisher(address_pub)
def clear_cache_callback(msg):
self.debug('clear_caches: %s', ' '.join(msg))
self.repo.clear_caches(msg[1:])
self.repo.app_instances_bus.add_subscription('delete', clear_cache_callback)
for address in address_sub:
self.repo.app_instances_bus.add_subscriber(address)
self.repo.app_instances_bus.start()