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# -*- coding: utf-8 -*-
# Copyright 2015 OpenMarket Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from twisted.internet import defer
from .push_rule_evaluator import PushRuleEvaluatorForEvent
from synapse.api.constants import EventTypes
from synapse.visibility import filter_events_for_clients_context
logger = logging.getLogger(__name__)
@defer.inlineCallbacks
def evaluator_for_event(event, hs, store, context):
rules_by_user = yield store.bulk_get_push_rules_for_room(
event, context
)
# if this event is an invite event, we may need to run rules for the user
# who's been invited, otherwise they won't get told they've been invited
if event.type == 'm.room.member' and event.content['membership'] == 'invite':
invited_user = event.state_key
if invited_user and hs.is_mine_id(invited_user):
has_pusher = yield store.user_has_pusher(invited_user)
if has_pusher:
rules_by_user = dict(rules_by_user)
rules_by_user[invited_user] = yield store.get_push_rules_for_user(
invited_user
)
defer.returnValue(BulkPushRuleEvaluator(
event.room_id, rules_by_user, store
))
class BulkPushRuleEvaluator:
"""
Runs push rules for all users in a room.
This is faster than running PushRuleEvaluator for each user because it
fetches all the rules for all the users in one (batched) db query
rather than doing multiple queries per-user. It currently uses
the same logic to run the actual rules, but could be optimised further
(see https://matrix.org/jira/browse/SYN-562)
"""
def __init__(self, room_id, rules_by_user, store):
self.room_id = room_id
self.rules_by_user = rules_by_user
self.store = store
@defer.inlineCallbacks
def action_for_event_by_user(self, event, context):
actions_by_user = {}
# None of these users can be peeking since this list of users comes
# from the set of users in the room, so we know for sure they're all
# actually in the room.
user_tuples = [
(u, False) for u in self.rules_by_user.keys()
]
filtered_by_user = yield filter_events_for_clients_context(
self.store, user_tuples, [event], {event.event_id: context}
)
room_members = yield self.store.get_joined_users_from_context(
event, context
)
evaluator = PushRuleEvaluatorForEvent(event, len(room_members))
condition_cache = {}
for uid, rules in self.rules_by_user.items():
display_name = None
member_ev_id = context.current_state_ids.get((EventTypes.Member, uid))
if member_ev_id:
member_ev = yield self.store.get_event(member_ev_id, allow_none=True)
if member_ev:
display_name = member_ev.content.get("displayname", None)
filtered = filtered_by_user[uid]
if len(filtered) == 0:
continue
if filtered[0].sender == uid:
continue
for rule in rules:
if 'enabled' in rule and not rule['enabled']:
continue
matches = _condition_checker(
evaluator, rule['conditions'], uid, display_name, condition_cache
)
if matches:
actions = [x for x in rule['actions'] if x != 'dont_notify']
if actions and 'notify' in actions:
actions_by_user[uid] = actions
break
defer.returnValue(actions_by_user)
def _condition_checker(evaluator, conditions, uid, display_name, cache):
for cond in conditions:
_id = cond.get("_id", None)
if _id:
res = cache.get(_id, None)
if res is False:
return False
elif res is True:
continue
res = evaluator.matches(cond, uid, display_name)
if _id:
cache[_id] = bool(res)
if not res:
return False
return True
|
