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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
import simplejson as json
from twisted.internet import defer
from synapse.types import UserID
import baserules
from push_rule_evaluator import PushRuleEvaluator
logger = logging.getLogger(__name__)
def decode_rule_json(rule):
rule['conditions'] = json.loads(rule['conditions'])
rule['actions'] = json.loads(rule['actions'])
return rule
@defer.inlineCallbacks
def evaluator_for_room_id(room_id, store):
users = yield store.get_users_in_room(room_id)
rules_by_user = yield store.bulk_get_push_rules(users)
rules_by_user = {
uid: baserules.list_with_base_rules(
[decode_rule_json(rule_list) for rule_list in rules_by_user[uid]]
if uid in rules_by_user else [],
UserID.from_string(uid)
)
for uid in users
}
member_events = yield store.get_current_state(
room_id=room_id,
event_type='m.room.member',
)
display_names = {}
for ev in member_events:
if ev.content.get("displayname"):
display_names[ev.state_key] = ev.content.get("displayname")
defer.returnValue(BulkPushRuleEvaluator(
room_id, rules_by_user, display_names, users
))
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
rarher 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, display_names, users_in_room):
self.room_id = room_id
self.rules_by_user = rules_by_user
self.display_names = display_names
self.users_in_room = users_in_room
def action_for_event_by_user(self, event):
actions_by_user = {}
for uid, rules in self.rules_by_user.items():
display_name = None
if uid in self.display_names:
display_name = self.display_names[uid]
for rule in rules:
if 'enabled' in rule and not rule['enabled']:
continue
# XXX: profile tags
if BulkPushRuleEvaluator.event_matches_rule(
event, rule,
display_name, len(self.users_in_room), None
):
actions = [x for x in rule['actions'] if x != 'dont_notify']
if len(actions) > 0:
actions_by_user[uid] = actions
break
return actions_by_user
@staticmethod
def event_matches_rule(event, rule,
display_name, room_member_count, profile_tag):
matches = True
for cond in rule['conditions']:
matches &= PushRuleEvaluator._event_fulfills_condition(
event, cond, display_name, room_member_count, profile_tag
)
return matches
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