794 lines
27 KiB
Python
794 lines
27 KiB
Python
# Copyright 2014-2016 OpenMarket Ltd
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# Copyright 2018 New Vector 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 abc
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import logging
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from typing import TYPE_CHECKING, Dict, List, Tuple, Union
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from synapse.api.errors import NotFoundError, StoreError
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from synapse.push.baserules import list_with_base_rules
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from synapse.replication.slave.storage._slaved_id_tracker import SlavedIdTracker
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from synapse.storage._base import SQLBaseStore, db_to_json
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from synapse.storage.database import DatabasePool, LoggingDatabaseConnection
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from synapse.storage.databases.main.appservice import ApplicationServiceWorkerStore
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from synapse.storage.databases.main.events_worker import EventsWorkerStore
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from synapse.storage.databases.main.pusher import PusherWorkerStore
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from synapse.storage.databases.main.receipts import ReceiptsWorkerStore
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from synapse.storage.databases.main.roommember import RoomMemberWorkerStore
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from synapse.storage.engines import PostgresEngine, Sqlite3Engine
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from synapse.storage.push_rule import InconsistentRuleException, RuleNotFoundException
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from synapse.storage.util.id_generators import (
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AbstractStreamIdTracker,
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StreamIdGenerator,
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)
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from synapse.util import json_encoder
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from synapse.util.caches.descriptors import cached, cachedList
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from synapse.util.caches.stream_change_cache import StreamChangeCache
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if TYPE_CHECKING:
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from synapse.server import HomeServer
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logger = logging.getLogger(__name__)
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def _load_rules(rawrules, enabled_map):
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ruleslist = []
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for rawrule in rawrules:
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rule = dict(rawrule)
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rule["conditions"] = db_to_json(rawrule["conditions"])
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rule["actions"] = db_to_json(rawrule["actions"])
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rule["default"] = False
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ruleslist.append(rule)
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# We're going to be mutating this a lot, so do a deep copy
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rules = list(list_with_base_rules(ruleslist))
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for i, rule in enumerate(rules):
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rule_id = rule["rule_id"]
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if rule_id in enabled_map:
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if rule.get("enabled", True) != bool(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(enabled_map[rule_id])
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rules[i] = rule
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return rules
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# The ABCMeta metaclass ensures that it cannot be instantiated without
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# the abstract methods being implemented.
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class PushRulesWorkerStore(
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ApplicationServiceWorkerStore,
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ReceiptsWorkerStore,
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PusherWorkerStore,
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RoomMemberWorkerStore,
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EventsWorkerStore,
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SQLBaseStore,
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metaclass=abc.ABCMeta,
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):
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"""This is an abstract base class where subclasses must implement
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`get_max_push_rules_stream_id` which can be called in the initializer.
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"""
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def __init__(
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self,
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database: DatabasePool,
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db_conn: LoggingDatabaseConnection,
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hs: "HomeServer",
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):
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super().__init__(database, db_conn, hs)
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if hs.config.worker.worker_app is None:
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self._push_rules_stream_id_gen: AbstractStreamIdTracker = StreamIdGenerator(
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db_conn, "push_rules_stream", "stream_id"
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)
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else:
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self._push_rules_stream_id_gen = SlavedIdTracker(
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db_conn, "push_rules_stream", "stream_id"
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)
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push_rules_prefill, push_rules_id = self.db_pool.get_cache_dict(
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db_conn,
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"push_rules_stream",
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entity_column="user_id",
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stream_column="stream_id",
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max_value=self.get_max_push_rules_stream_id(),
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)
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self.push_rules_stream_cache = StreamChangeCache(
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"PushRulesStreamChangeCache",
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push_rules_id,
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prefilled_cache=push_rules_prefill,
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)
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@abc.abstractmethod
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def get_max_push_rules_stream_id(self):
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"""Get the position of the push rules stream.
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Returns:
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int
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"""
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raise NotImplementedError()
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@cached(max_entries=5000)
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async def get_push_rules_for_user(self, user_id):
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rows = await self.db_pool.simple_select_list(
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table="push_rules",
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keyvalues={"user_name": user_id},
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retcols=(
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"user_name",
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"rule_id",
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"priority_class",
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"priority",
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"conditions",
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"actions",
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),
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desc="get_push_rules_enabled_for_user",
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)
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rows.sort(key=lambda row: (-int(row["priority_class"]), -int(row["priority"])))
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enabled_map = await self.get_push_rules_enabled_for_user(user_id)
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return _load_rules(rows, enabled_map)
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@cached(max_entries=5000)
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async def get_push_rules_enabled_for_user(self, user_id) -> Dict[str, bool]:
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results = await self.db_pool.simple_select_list(
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table="push_rules_enable",
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keyvalues={"user_name": user_id},
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retcols=("user_name", "rule_id", "enabled"),
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desc="get_push_rules_enabled_for_user",
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)
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return {r["rule_id"]: False if r["enabled"] == 0 else True for r in results}
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async def have_push_rules_changed_for_user(
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self, user_id: str, last_id: int
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) -> bool:
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if not self.push_rules_stream_cache.has_entity_changed(user_id, last_id):
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return False
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else:
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def have_push_rules_changed_txn(txn):
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sql = (
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"SELECT COUNT(stream_id) FROM push_rules_stream"
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" WHERE user_id = ? AND ? < stream_id"
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)
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txn.execute(sql, (user_id, last_id))
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(count,) = txn.fetchone()
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return bool(count)
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return await self.db_pool.runInteraction(
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"have_push_rules_changed", have_push_rules_changed_txn
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)
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@cachedList(
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cached_method_name="get_push_rules_for_user",
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list_name="user_ids",
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num_args=1,
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)
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async def bulk_get_push_rules(self, user_ids):
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if not user_ids:
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return {}
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results = {user_id: [] for user_id in user_ids}
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rows = await self.db_pool.simple_select_many_batch(
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table="push_rules",
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column="user_name",
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iterable=user_ids,
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retcols=("*",),
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desc="bulk_get_push_rules",
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)
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rows.sort(key=lambda row: (-int(row["priority_class"]), -int(row["priority"])))
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for row in rows:
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results.setdefault(row["user_name"], []).append(row)
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enabled_map_by_user = await self.bulk_get_push_rules_enabled(user_ids)
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for user_id, rules in results.items():
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results[user_id] = _load_rules(rules, enabled_map_by_user.get(user_id, {}))
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return results
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async def copy_push_rule_from_room_to_room(
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self, new_room_id: str, user_id: str, rule: dict
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) -> None:
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"""Copy a single push rule from one room to another for a specific user.
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Args:
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new_room_id: ID of the new room.
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user_id : ID of user the push rule belongs to.
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rule: A push rule.
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"""
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# Create new rule id
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rule_id_scope = "/".join(rule["rule_id"].split("/")[:-1])
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new_rule_id = rule_id_scope + "/" + new_room_id
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# Change room id in each condition
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for condition in rule.get("conditions", []):
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if condition.get("key") == "room_id":
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condition["pattern"] = new_room_id
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# Add the rule for the new room
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await self.add_push_rule(
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user_id=user_id,
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rule_id=new_rule_id,
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priority_class=rule["priority_class"],
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conditions=rule["conditions"],
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actions=rule["actions"],
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)
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async def copy_push_rules_from_room_to_room_for_user(
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self, old_room_id: str, new_room_id: str, user_id: str
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) -> None:
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"""Copy all of the push rules from one room to another for a specific
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user.
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Args:
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old_room_id: ID of the old room.
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new_room_id: ID of the new room.
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user_id: ID of user to copy push rules for.
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"""
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# Retrieve push rules for this user
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user_push_rules = await self.get_push_rules_for_user(user_id)
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# Get rules relating to the old room and copy them to the new room
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for rule in user_push_rules:
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conditions = rule.get("conditions", [])
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if any(
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(c.get("key") == "room_id" and c.get("pattern") == old_room_id)
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for c in conditions
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):
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await self.copy_push_rule_from_room_to_room(new_room_id, user_id, rule)
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@cachedList(
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cached_method_name="get_push_rules_enabled_for_user",
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list_name="user_ids",
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num_args=1,
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)
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async def bulk_get_push_rules_enabled(self, user_ids):
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if not user_ids:
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return {}
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results = {user_id: {} for user_id in user_ids}
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rows = await self.db_pool.simple_select_many_batch(
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table="push_rules_enable",
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column="user_name",
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iterable=user_ids,
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retcols=("user_name", "rule_id", "enabled"),
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desc="bulk_get_push_rules_enabled",
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)
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for row in rows:
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enabled = bool(row["enabled"])
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results.setdefault(row["user_name"], {})[row["rule_id"]] = enabled
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return results
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async def get_all_push_rule_updates(
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self, instance_name: str, last_id: int, current_id: int, limit: int
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) -> Tuple[List[Tuple[int, tuple]], int, bool]:
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"""Get updates for push_rules replication stream.
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Args:
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instance_name: The writer we want to fetch updates from. Unused
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here since there is only ever one writer.
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last_id: The token to fetch updates from. Exclusive.
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current_id: The token to fetch updates up to. Inclusive.
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limit: The requested limit for the number of rows to return. The
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function may return more or fewer rows.
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Returns:
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A tuple consisting of: the updates, a token to use to fetch
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subsequent updates, and whether we returned fewer rows than exists
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between the requested tokens due to the limit.
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The token returned can be used in a subsequent call to this
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function to get further updatees.
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The updates are a list of 2-tuples of stream ID and the row data
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"""
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if last_id == current_id:
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return [], current_id, False
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def get_all_push_rule_updates_txn(txn):
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sql = """
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SELECT stream_id, user_id
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FROM push_rules_stream
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WHERE ? < stream_id AND stream_id <= ?
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ORDER BY stream_id ASC
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LIMIT ?
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"""
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txn.execute(sql, (last_id, current_id, limit))
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updates = [(stream_id, (user_id,)) for stream_id, user_id in txn]
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limited = False
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upper_bound = current_id
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if len(updates) == limit:
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limited = True
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upper_bound = updates[-1][0]
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return updates, upper_bound, limited
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return await self.db_pool.runInteraction(
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"get_all_push_rule_updates", get_all_push_rule_updates_txn
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)
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class PushRuleStore(PushRulesWorkerStore):
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async def add_push_rule(
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self,
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user_id,
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rule_id,
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priority_class,
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conditions,
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actions,
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before=None,
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after=None,
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) -> None:
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conditions_json = json_encoder.encode(conditions)
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actions_json = json_encoder.encode(actions)
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async with self._push_rules_stream_id_gen.get_next() as stream_id:
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event_stream_ordering = self._stream_id_gen.get_current_token()
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if before or after:
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await self.db_pool.runInteraction(
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"_add_push_rule_relative_txn",
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self._add_push_rule_relative_txn,
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stream_id,
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event_stream_ordering,
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user_id,
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rule_id,
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priority_class,
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conditions_json,
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actions_json,
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before,
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after,
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)
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else:
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await self.db_pool.runInteraction(
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"_add_push_rule_highest_priority_txn",
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self._add_push_rule_highest_priority_txn,
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stream_id,
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event_stream_ordering,
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user_id,
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rule_id,
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priority_class,
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conditions_json,
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actions_json,
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)
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def _add_push_rule_relative_txn(
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self,
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txn,
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stream_id,
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event_stream_ordering,
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user_id,
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rule_id,
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priority_class,
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conditions_json,
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actions_json,
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before,
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after,
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):
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# Lock the table since otherwise we'll have annoying races between the
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# SELECT here and the UPSERT below.
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self.database_engine.lock_table(txn, "push_rules")
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relative_to_rule = before or after
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res = self.db_pool.simple_select_one_txn(
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txn,
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table="push_rules",
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keyvalues={"user_name": user_id, "rule_id": relative_to_rule},
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retcols=["priority_class", "priority"],
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allow_none=True,
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)
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if not res:
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raise RuleNotFoundException(
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"before/after rule not found: %s" % (relative_to_rule,)
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)
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base_priority_class = res["priority_class"]
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base_rule_priority = res["priority"]
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if base_priority_class != priority_class:
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raise InconsistentRuleException(
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"Given priority class does not match class of relative rule"
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)
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if before:
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# Higher priority rules are executed first, So adding a rule before
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# a rule means giving it a higher priority than that rule.
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new_rule_priority = base_rule_priority + 1
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else:
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# We increment the priority of the existing rules to make space for
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# the new rule. Therefore if we want this rule to appear after
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# an existing rule we give it the priority of the existing rule,
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# and then increment the priority of the existing rule.
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new_rule_priority = base_rule_priority
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sql = (
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"UPDATE push_rules SET priority = priority + 1"
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" WHERE user_name = ? AND priority_class = ? AND priority >= ?"
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)
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txn.execute(sql, (user_id, priority_class, new_rule_priority))
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self._upsert_push_rule_txn(
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txn,
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stream_id,
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event_stream_ordering,
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user_id,
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rule_id,
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priority_class,
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new_rule_priority,
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conditions_json,
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actions_json,
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)
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def _add_push_rule_highest_priority_txn(
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self,
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txn,
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stream_id,
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event_stream_ordering,
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user_id,
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rule_id,
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priority_class,
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conditions_json,
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actions_json,
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):
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# Lock the table since otherwise we'll have annoying races between the
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# SELECT here and the UPSERT below.
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self.database_engine.lock_table(txn, "push_rules")
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# find the highest priority rule in that class
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sql = (
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"SELECT COUNT(*), MAX(priority) FROM push_rules"
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" WHERE user_name = ? and priority_class = ?"
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)
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txn.execute(sql, (user_id, priority_class))
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res = txn.fetchall()
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(how_many, highest_prio) = res[0]
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new_prio = 0
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if how_many > 0:
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new_prio = highest_prio + 1
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self._upsert_push_rule_txn(
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txn,
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stream_id,
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event_stream_ordering,
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user_id,
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rule_id,
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priority_class,
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new_prio,
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conditions_json,
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actions_json,
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)
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def _upsert_push_rule_txn(
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self,
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txn,
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stream_id,
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event_stream_ordering,
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user_id,
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rule_id,
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priority_class,
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priority,
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conditions_json,
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actions_json,
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update_stream=True,
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):
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"""Specialised version of simple_upsert_txn that picks a push_rule_id
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using the _push_rule_id_gen if it needs to insert the rule. It assumes
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that the "push_rules" table is locked"""
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sql = (
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"UPDATE push_rules"
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" SET priority_class = ?, priority = ?, conditions = ?, actions = ?"
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" WHERE user_name = ? AND rule_id = ?"
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)
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txn.execute(
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sql,
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(priority_class, priority, conditions_json, actions_json, user_id, rule_id),
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)
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if txn.rowcount == 0:
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# We didn't update a row with the given rule_id so insert one
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push_rule_id = self._push_rule_id_gen.get_next()
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self.db_pool.simple_insert_txn(
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txn,
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table="push_rules",
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values={
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"id": push_rule_id,
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"user_name": user_id,
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"rule_id": rule_id,
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"priority_class": priority_class,
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"priority": priority,
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"conditions": conditions_json,
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"actions": actions_json,
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},
|
|
)
|
|
|
|
if update_stream:
|
|
self._insert_push_rules_update_txn(
|
|
txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
user_id,
|
|
rule_id,
|
|
op="ADD",
|
|
data={
|
|
"priority_class": priority_class,
|
|
"priority": priority,
|
|
"conditions": conditions_json,
|
|
"actions": actions_json,
|
|
},
|
|
)
|
|
|
|
# ensure we have a push_rules_enable row
|
|
# enabledness defaults to true
|
|
if isinstance(self.database_engine, PostgresEngine):
|
|
sql = """
|
|
INSERT INTO push_rules_enable (id, user_name, rule_id, enabled)
|
|
VALUES (?, ?, ?, ?)
|
|
ON CONFLICT DO NOTHING
|
|
"""
|
|
elif isinstance(self.database_engine, Sqlite3Engine):
|
|
sql = """
|
|
INSERT OR IGNORE INTO push_rules_enable (id, user_name, rule_id, enabled)
|
|
VALUES (?, ?, ?, ?)
|
|
"""
|
|
else:
|
|
raise RuntimeError("Unknown database engine")
|
|
|
|
new_enable_id = self._push_rules_enable_id_gen.get_next()
|
|
txn.execute(sql, (new_enable_id, user_id, rule_id, 1))
|
|
|
|
async def delete_push_rule(self, user_id: str, rule_id: str) -> None:
|
|
"""
|
|
Delete a push rule. Args specify the row to be deleted and can be
|
|
any of the columns in the push_rule table, but below are the
|
|
standard ones
|
|
|
|
Args:
|
|
user_id: The matrix ID of the push rule owner
|
|
rule_id: The rule_id of the rule to be deleted
|
|
"""
|
|
|
|
def delete_push_rule_txn(txn, stream_id, event_stream_ordering):
|
|
# we don't use simple_delete_one_txn because that would fail if the
|
|
# user did not have a push_rule_enable row.
|
|
self.db_pool.simple_delete_txn(
|
|
txn, "push_rules_enable", {"user_name": user_id, "rule_id": rule_id}
|
|
)
|
|
|
|
self.db_pool.simple_delete_one_txn(
|
|
txn, "push_rules", {"user_name": user_id, "rule_id": rule_id}
|
|
)
|
|
|
|
self._insert_push_rules_update_txn(
|
|
txn, stream_id, event_stream_ordering, user_id, rule_id, op="DELETE"
|
|
)
|
|
|
|
async with self._push_rules_stream_id_gen.get_next() as stream_id:
|
|
event_stream_ordering = self._stream_id_gen.get_current_token()
|
|
|
|
await self.db_pool.runInteraction(
|
|
"delete_push_rule",
|
|
delete_push_rule_txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
)
|
|
|
|
async def set_push_rule_enabled(
|
|
self, user_id: str, rule_id: str, enabled: bool, is_default_rule: bool
|
|
) -> None:
|
|
"""
|
|
Sets the `enabled` state of a push rule.
|
|
|
|
Args:
|
|
user_id: the user ID of the user who wishes to enable/disable the rule
|
|
e.g. '@tina:example.org'
|
|
rule_id: the full rule ID of the rule to be enabled/disabled
|
|
e.g. 'global/override/.m.rule.roomnotif'
|
|
or 'global/override/myCustomRule'
|
|
enabled: True if the rule is to be enabled, False if it is to be
|
|
disabled
|
|
is_default_rule: True if and only if this is a server-default rule.
|
|
This skips the check for existence (as only user-created rules
|
|
are always stored in the database `push_rules` table).
|
|
|
|
Raises:
|
|
NotFoundError if the rule does not exist.
|
|
"""
|
|
async with self._push_rules_stream_id_gen.get_next() as stream_id:
|
|
event_stream_ordering = self._stream_id_gen.get_current_token()
|
|
await self.db_pool.runInteraction(
|
|
"_set_push_rule_enabled_txn",
|
|
self._set_push_rule_enabled_txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
user_id,
|
|
rule_id,
|
|
enabled,
|
|
is_default_rule,
|
|
)
|
|
|
|
def _set_push_rule_enabled_txn(
|
|
self,
|
|
txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
user_id,
|
|
rule_id,
|
|
enabled,
|
|
is_default_rule,
|
|
):
|
|
new_id = self._push_rules_enable_id_gen.get_next()
|
|
|
|
if not is_default_rule:
|
|
# first check it exists; we need to lock for key share so that a
|
|
# transaction that deletes the push rule will conflict with this one.
|
|
# We also need a push_rule_enable row to exist for every push_rules
|
|
# row, otherwise it is possible to simultaneously delete a push rule
|
|
# (that has no _enable row) and enable it, resulting in a dangling
|
|
# _enable row. To solve this: we either need to use SERIALISABLE or
|
|
# ensure we always have a push_rule_enable row for every push_rule
|
|
# row. We chose the latter.
|
|
for_key_share = "FOR KEY SHARE"
|
|
if not isinstance(self.database_engine, PostgresEngine):
|
|
# For key share is not applicable/available on SQLite
|
|
for_key_share = ""
|
|
sql = (
|
|
"""
|
|
SELECT 1 FROM push_rules
|
|
WHERE user_name = ? AND rule_id = ?
|
|
%s
|
|
"""
|
|
% for_key_share
|
|
)
|
|
txn.execute(sql, (user_id, rule_id))
|
|
if txn.fetchone() is None:
|
|
# needed to set NOT_FOUND code.
|
|
raise NotFoundError("Push rule does not exist.")
|
|
|
|
self.db_pool.simple_upsert_txn(
|
|
txn,
|
|
"push_rules_enable",
|
|
{"user_name": user_id, "rule_id": rule_id},
|
|
{"enabled": 1 if enabled else 0},
|
|
{"id": new_id},
|
|
)
|
|
|
|
self._insert_push_rules_update_txn(
|
|
txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
user_id,
|
|
rule_id,
|
|
op="ENABLE" if enabled else "DISABLE",
|
|
)
|
|
|
|
async def set_push_rule_actions(
|
|
self,
|
|
user_id: str,
|
|
rule_id: str,
|
|
actions: List[Union[dict, str]],
|
|
is_default_rule: bool,
|
|
) -> None:
|
|
"""
|
|
Sets the `actions` state of a push rule.
|
|
|
|
Will throw NotFoundError if the rule does not exist; the Code for this
|
|
is NOT_FOUND.
|
|
|
|
Args:
|
|
user_id: the user ID of the user who wishes to enable/disable the rule
|
|
e.g. '@tina:example.org'
|
|
rule_id: the full rule ID of the rule to be enabled/disabled
|
|
e.g. 'global/override/.m.rule.roomnotif'
|
|
or 'global/override/myCustomRule'
|
|
actions: A list of actions (each action being a dict or string),
|
|
e.g. ["notify", {"set_tweak": "highlight", "value": false}]
|
|
is_default_rule: True if and only if this is a server-default rule.
|
|
This skips the check for existence (as only user-created rules
|
|
are always stored in the database `push_rules` table).
|
|
"""
|
|
actions_json = json_encoder.encode(actions)
|
|
|
|
def set_push_rule_actions_txn(txn, stream_id, event_stream_ordering):
|
|
if is_default_rule:
|
|
# Add a dummy rule to the rules table with the user specified
|
|
# actions.
|
|
priority_class = -1
|
|
priority = 1
|
|
self._upsert_push_rule_txn(
|
|
txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
user_id,
|
|
rule_id,
|
|
priority_class,
|
|
priority,
|
|
"[]",
|
|
actions_json,
|
|
update_stream=False,
|
|
)
|
|
else:
|
|
try:
|
|
self.db_pool.simple_update_one_txn(
|
|
txn,
|
|
"push_rules",
|
|
{"user_name": user_id, "rule_id": rule_id},
|
|
{"actions": actions_json},
|
|
)
|
|
except StoreError as serr:
|
|
if serr.code == 404:
|
|
# this sets the NOT_FOUND error Code
|
|
raise NotFoundError("Push rule does not exist")
|
|
else:
|
|
raise
|
|
|
|
self._insert_push_rules_update_txn(
|
|
txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
user_id,
|
|
rule_id,
|
|
op="ACTIONS",
|
|
data={"actions": actions_json},
|
|
)
|
|
|
|
async with self._push_rules_stream_id_gen.get_next() as stream_id:
|
|
event_stream_ordering = self._stream_id_gen.get_current_token()
|
|
|
|
await self.db_pool.runInteraction(
|
|
"set_push_rule_actions",
|
|
set_push_rule_actions_txn,
|
|
stream_id,
|
|
event_stream_ordering,
|
|
)
|
|
|
|
def _insert_push_rules_update_txn(
|
|
self, txn, stream_id, event_stream_ordering, user_id, rule_id, op, data=None
|
|
):
|
|
values = {
|
|
"stream_id": stream_id,
|
|
"event_stream_ordering": event_stream_ordering,
|
|
"user_id": user_id,
|
|
"rule_id": rule_id,
|
|
"op": op,
|
|
}
|
|
if data is not None:
|
|
values.update(data)
|
|
|
|
self.db_pool.simple_insert_txn(txn, "push_rules_stream", values=values)
|
|
|
|
txn.call_after(self.get_push_rules_for_user.invalidate, (user_id,))
|
|
txn.call_after(self.get_push_rules_enabled_for_user.invalidate, (user_id,))
|
|
txn.call_after(
|
|
self.push_rules_stream_cache.entity_has_changed, user_id, stream_id
|
|
)
|
|
|
|
def get_max_push_rules_stream_id(self):
|
|
return self._push_rules_stream_id_gen.get_current_token()
|