[optimization] improve massive write performance by optimizing hooks selection
profiling on some massive deletion showed up that 2/3 of the time was spent
in hooks selection. Those changes make it much more acceptable (through
selection is still not negligeable):
* use one registry for each event, so we've much less hooks to check
when emiting an event as well as no more need for the match_event
selector. This required ability to put one appobject
into several registries, using a __registries__ class attribute.
* check for deprecated .enabled at registry initialization time instead
of at selection time
A very simple HooksManager class has been reintroduce to choose the
right registry on call_hooks.
Those optimisations leads to a ~x3 factor of time necessary to delete
16000 entities.
"""hooks to ensure use_email / primary_email relations consistency
:organization: Logilab
:copyright: 2001-2010 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
from cubicweb.server import hook
from logilab.common.compat import any
class SetUseEmailRelationOp(hook.Operation):
"""delay this operation to commit to avoid conflict with a late rql query
already setting the relation
"""
rtype = 'use_email'
entity = email = None # make pylint happy
def condition(self):
"""check entity has use_email set for the email address"""
return not any(e for e in self.entity.use_email
if self.email.eid == e.eid)
def precommit_event(self):
if self.condition():
self.session.execute(
'SET X %s Y WHERE X eid %%(x)s, Y eid %%(y)s' % self.rtype,
{'x': self.entity.eid, 'y': self.email.eid}, 'x')
class SetPrimaryEmailRelationOp(SetUseEmailRelationOp):
rtype = 'primary_email'
def condition(self):
"""check entity has no primary_email set"""
return not self.entity.primary_email
class SetPrimaryEmailHook(hook.Hook):
"""notify when a bug or story or version has its state modified"""
__regid__ = 'setprimaryemail'
__select__ = hook.Hook.__select__ & hook.match_rtype('use_email')
category = 'email'
events = ('after_add_relation',)
def __call__(self):
entity = self._cw.entity_from_eid(self.eidfrom)
if 'primary_email' in entity.e_schema.subject_relations():
SetPrimaryEmailRelationOp(self._cw, entity=entity,
email=self._cw.entity_from_eid(self.eidto))
class SetUseEmailHook(hook.Hook):
"""notify when a bug or story or version has its state modified"""
__regid__ = 'setprimaryemail'
__select__ = hook.Hook.__select__ & hook.match_rtype('primary_email')
category = 'email'
events = ('after_add_relation',)
def __call__(self):
entity = self._cw.entity_from_eid(self.eidfrom)
if 'use_email' in entity.e_schema.subject_relations():
SetUseEmailRelationOp(self._cw, entity=entity,
email=self._cw.entity_from_eid(self.eidto))