163 lines
5.2 KiB
Python
163 lines
5.2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import ujson as json
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from twisted.internet import defer
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import baserules
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from push_rule_evaluator import PushRuleEvaluatorForEvent
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from synapse.api.constants import EventTypes
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logger = logging.getLogger(__name__)
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def decode_rule_json(rule):
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rule['conditions'] = json.loads(rule['conditions'])
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rule['actions'] = json.loads(rule['actions'])
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return rule
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@defer.inlineCallbacks
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def _get_rules(room_id, user_ids, store):
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rules_by_user = yield store.bulk_get_push_rules(user_ids)
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rules_enabled_by_user = yield store.bulk_get_push_rules_enabled(user_ids)
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rules_by_user = {
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uid: baserules.list_with_base_rules([
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decode_rule_json(rule_list)
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for rule_list in rules_by_user.get(uid, [])
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])
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for uid in user_ids
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}
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# We apply the rules-enabled map here: bulk_get_push_rules doesn't
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# fetch disabled rules, but this won't account for any server default
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# rules the user has disabled, so we need to do this too.
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for uid in user_ids:
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if uid not in rules_enabled_by_user:
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continue
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user_enabled_map = rules_enabled_by_user[uid]
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for i, rule in enumerate(rules_by_user[uid]):
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rule_id = rule['rule_id']
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if rule_id in user_enabled_map:
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if rule.get('enabled', True) != bool(user_enabled_map[rule_id]):
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# Rules are cached across users.
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rule = dict(rule)
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rule['enabled'] = bool(user_enabled_map[rule_id])
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rules_by_user[uid][i] = rule
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defer.returnValue(rules_by_user)
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@defer.inlineCallbacks
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def evaluator_for_room_id(room_id, hs, store):
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results = yield store.get_receipts_for_room(room_id, "m.read")
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user_ids = [
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row["user_id"] for row in results
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if hs.is_mine_id(row["user_id"])
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]
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rules_by_user = yield _get_rules(room_id, user_ids, store)
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defer.returnValue(BulkPushRuleEvaluator(
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room_id, rules_by_user, user_ids, store
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))
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class BulkPushRuleEvaluator:
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"""
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Runs push rules for all users in a room.
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This is faster than running PushRuleEvaluator for each user because it
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fetches all the rules for all the users in one (batched) db query
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rather than doing multiple queries per-user. It currently uses
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the same logic to run the actual rules, but could be optimised further
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(see https://matrix.org/jira/browse/SYN-562)
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"""
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def __init__(self, room_id, rules_by_user, users_in_room, store):
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self.room_id = room_id
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self.rules_by_user = rules_by_user
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self.users_in_room = users_in_room
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self.store = store
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@defer.inlineCallbacks
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def action_for_event_by_user(self, event, handler, current_state):
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actions_by_user = {}
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users_dict = yield self.store.are_guests(self.rules_by_user.keys())
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filtered_by_user = yield handler._filter_events_for_clients(
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users_dict.items(), [event], {event.event_id: current_state}
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)
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evaluator = PushRuleEvaluatorForEvent(event, len(self.users_in_room))
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condition_cache = {}
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display_names = {}
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for ev in current_state.values():
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nm = ev.content.get("displayname", None)
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if nm and ev.type == EventTypes.Member:
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display_names[ev.state_key] = nm
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for uid, rules in self.rules_by_user.items():
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display_name = display_names.get(uid, None)
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filtered = filtered_by_user[uid]
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if len(filtered) == 0:
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continue
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if filtered[0].sender == uid:
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continue
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for rule in rules:
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if 'enabled' in rule and not rule['enabled']:
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continue
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matches = _condition_checker(
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evaluator, rule['conditions'], uid, display_name, condition_cache
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)
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if matches:
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actions = [x for x in rule['actions'] if x != 'dont_notify']
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if actions and 'notify' in actions:
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actions_by_user[uid] = actions
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break
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defer.returnValue(actions_by_user)
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def _condition_checker(evaluator, conditions, uid, display_name, cache):
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for cond in conditions:
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_id = cond.get("_id", None)
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if _id:
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res = cache.get(_id, None)
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if res is False:
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return False
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elif res is True:
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continue
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res = evaluator.matches(cond, uid, display_name)
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if _id:
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cache[_id] = bool(res)
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if not res:
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return False
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return True
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