diff --git a/changelog.d/17693.misc b/changelog.d/17693.misc new file mode 100644 index 000000000..0d20c8091 --- /dev/null +++ b/changelog.d/17693.misc @@ -0,0 +1 @@ +Use Sliding Sync tables as a bulk shortcut for getting the max `event_stream_ordering` of rooms. diff --git a/synapse/handlers/sliding_sync/room_lists.py b/synapse/handlers/sliding_sync/room_lists.py index 165b15c60..652d05dbe 100644 --- a/synapse/handlers/sliding_sync/room_lists.py +++ b/synapse/handlers/sliding_sync/room_lists.py @@ -27,6 +27,7 @@ from typing import ( Set, Tuple, Union, + cast, ) import attr @@ -355,11 +356,18 @@ class SlidingSyncRoomLists: if list_config.ranges: if list_config.ranges == [(0, len(filtered_sync_room_map) - 1)]: # If we are asking for the full range, we don't need to sort the list. - sorted_room_info = list(filtered_sync_room_map.values()) + sorted_room_info: List[RoomsForUserType] = list( + filtered_sync_room_map.values() + ) else: # Sort the list - sorted_room_info = await self.sort_rooms_using_tables( - filtered_sync_room_map, to_token + sorted_room_info = await self.sort_rooms( + # Cast is safe because RoomsForUserSlidingSync is part + # of the `RoomsForUserType` union. Why can't it detect this? + cast( + Dict[str, RoomsForUserType], filtered_sync_room_map + ), + to_token, ) for range in list_config.ranges: @@ -1762,63 +1770,6 @@ class SlidingSyncRoomLists: # Assemble a new sync room map but only with the `filtered_room_id_set` return {room_id: sync_room_map[room_id] for room_id in filtered_room_id_set} - @trace - async def sort_rooms_using_tables( - self, - sync_room_map: Mapping[str, RoomsForUserSlidingSync], - to_token: StreamToken, - ) -> List[RoomsForUserSlidingSync]: - """ - Sort by `stream_ordering` of the last event that the user should see in the - room. `stream_ordering` is unique so we get a stable sort. - - Args: - sync_room_map: Dictionary of room IDs to sort along with membership - information in the room at the time of `to_token`. - to_token: We sort based on the events in the room at this token (<= `to_token`) - - Returns: - A sorted list of room IDs by `stream_ordering` along with membership information. - """ - - # Assemble a map of room ID to the `stream_ordering` of the last activity that the - # user should see in the room (<= `to_token`) - last_activity_in_room_map: Dict[str, int] = {} - - for room_id, room_for_user in sync_room_map.items(): - if room_for_user.membership != Membership.JOIN: - # If the user has left/been invited/knocked/been banned from a - # room, they shouldn't see anything past that point. - # - # FIXME: It's possible that people should see beyond this point - # in invited/knocked cases if for example the room has - # `invite`/`world_readable` history visibility, see - # https://github.com/matrix-org/matrix-spec-proposals/pull/3575#discussion_r1653045932 - last_activity_in_room_map[room_id] = room_for_user.event_pos.stream - - # For fully-joined rooms, we find the latest activity at/before the - # `to_token`. - joined_room_positions = ( - await self.store.bulk_get_last_event_pos_in_room_before_stream_ordering( - [ - room_id - for room_id, room_for_user in sync_room_map.items() - if room_for_user.membership == Membership.JOIN - ], - to_token.room_key, - ) - ) - - last_activity_in_room_map.update(joined_room_positions) - - return sorted( - sync_room_map.values(), - # Sort by the last activity (stream_ordering) in the room - key=lambda room_info: last_activity_in_room_map[room_info.room_id], - # We want descending order - reverse=True, - ) - @trace async def sort_rooms( self, diff --git a/synapse/storage/databases/main/events_bg_updates.py b/synapse/storage/databases/main/events_bg_updates.py index 743200471..a8723f94b 100644 --- a/synapse/storage/databases/main/events_bg_updates.py +++ b/synapse/storage/databases/main/events_bg_updates.py @@ -52,6 +52,7 @@ from synapse.storage.types import Cursor from synapse.types import JsonDict, RoomStreamToken, StateMap, StrCollection from synapse.types.handlers import SLIDING_SYNC_DEFAULT_BUMP_EVENT_TYPES from synapse.types.state import StateFilter +from synapse.types.storage import _BackgroundUpdates from synapse.util import json_encoder from synapse.util.iterutils import batch_iter @@ -76,34 +77,6 @@ _REPLACE_STREAM_ORDERING_SQL_COMMANDS = ( ) -class _BackgroundUpdates: - EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts" - EVENT_FIELDS_SENDER_URL_UPDATE_NAME = "event_fields_sender_url" - DELETE_SOFT_FAILED_EXTREMITIES = "delete_soft_failed_extremities" - POPULATE_STREAM_ORDERING2 = "populate_stream_ordering2" - INDEX_STREAM_ORDERING2 = "index_stream_ordering2" - INDEX_STREAM_ORDERING2_CONTAINS_URL = "index_stream_ordering2_contains_url" - INDEX_STREAM_ORDERING2_ROOM_ORDER = "index_stream_ordering2_room_order" - INDEX_STREAM_ORDERING2_ROOM_STREAM = "index_stream_ordering2_room_stream" - INDEX_STREAM_ORDERING2_TS = "index_stream_ordering2_ts" - REPLACE_STREAM_ORDERING_COLUMN = "replace_stream_ordering_column" - - EVENT_EDGES_DROP_INVALID_ROWS = "event_edges_drop_invalid_rows" - EVENT_EDGES_REPLACE_INDEX = "event_edges_replace_index" - - EVENTS_POPULATE_STATE_KEY_REJECTIONS = "events_populate_state_key_rejections" - - EVENTS_JUMP_TO_DATE_INDEX = "events_jump_to_date_index" - - SLIDING_SYNC_PREFILL_JOINED_ROOMS_TO_RECALCULATE_TABLE_BG_UPDATE = ( - "sliding_sync_prefill_joined_rooms_to_recalculate_table_bg_update" - ) - SLIDING_SYNC_JOINED_ROOMS_BG_UPDATE = "sliding_sync_joined_rooms_bg_update" - SLIDING_SYNC_MEMBERSHIP_SNAPSHOTS_BG_UPDATE = ( - "sliding_sync_membership_snapshots_bg_update" - ) - - @attr.s(slots=True, frozen=True, auto_attribs=True) class _CalculateChainCover: """Return value for _calculate_chain_cover_txn.""" diff --git a/synapse/storage/databases/main/events_worker.py b/synapse/storage/databases/main/events_worker.py index b188f3292..029f4bd87 100644 --- a/synapse/storage/databases/main/events_worker.py +++ b/synapse/storage/databases/main/events_worker.py @@ -83,6 +83,7 @@ from synapse.storage.util.id_generators import ( from synapse.storage.util.sequence import build_sequence_generator from synapse.types import JsonDict, get_domain_from_id from synapse.types.state import StateFilter +from synapse.types.storage import _BackgroundUpdates from synapse.util import unwrapFirstError from synapse.util.async_helpers import ObservableDeferred, delay_cancellation from synapse.util.caches.descriptors import cached, cachedList @@ -2465,3 +2466,14 @@ class EventsWorkerStore(SQLBaseStore): ) self.invalidate_get_event_cache_after_txn(txn, event_id) + + async def have_finished_sliding_sync_background_jobs(self) -> bool: + """Return if it's safe to use the sliding sync membership tables.""" + + return await self.db_pool.updates.have_completed_background_updates( + ( + _BackgroundUpdates.SLIDING_SYNC_PREFILL_JOINED_ROOMS_TO_RECALCULATE_TABLE_BG_UPDATE, + _BackgroundUpdates.SLIDING_SYNC_JOINED_ROOMS_BG_UPDATE, + _BackgroundUpdates.SLIDING_SYNC_MEMBERSHIP_SNAPSHOTS_BG_UPDATE, + ) + ) diff --git a/synapse/storage/databases/main/roommember.py b/synapse/storage/databases/main/roommember.py index 1fc2d7ba1..8bfa6254f 100644 --- a/synapse/storage/databases/main/roommember.py +++ b/synapse/storage/databases/main/roommember.py @@ -51,7 +51,6 @@ from synapse.storage.database import ( LoggingTransaction, ) from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore -from synapse.storage.databases.main.events_bg_updates import _BackgroundUpdates from synapse.storage.databases.main.events_worker import EventsWorkerStore from synapse.storage.engines import Sqlite3Engine from synapse.storage.roommember import ( @@ -1449,17 +1448,6 @@ class RoomMemberWorkerStore(EventsWorkerStore, CacheInvalidationWorkerStore): get_sliding_sync_rooms_for_user_txn, ) - async def have_finished_sliding_sync_background_jobs(self) -> bool: - """Return if it's safe to use the sliding sync membership tables.""" - - return await self.db_pool.updates.have_completed_background_updates( - ( - _BackgroundUpdates.SLIDING_SYNC_PREFILL_JOINED_ROOMS_TO_RECALCULATE_TABLE_BG_UPDATE, - _BackgroundUpdates.SLIDING_SYNC_JOINED_ROOMS_BG_UPDATE, - _BackgroundUpdates.SLIDING_SYNC_MEMBERSHIP_SNAPSHOTS_BG_UPDATE, - ) - ) - class RoomMemberBackgroundUpdateStore(SQLBaseStore): def __init__( diff --git a/synapse/storage/databases/main/stream.py b/synapse/storage/databases/main/stream.py index 459436e30..94a7efee7 100644 --- a/synapse/storage/databases/main/stream.py +++ b/synapse/storage/databases/main/stream.py @@ -1524,7 +1524,7 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore): # majority of rooms will have a latest token from before the min stream # pos. - def bulk_get_max_event_pos_txn( + def bulk_get_max_event_pos_fallback_txn( txn: LoggingTransaction, batched_room_ids: StrCollection ) -> Dict[str, int]: clause, args = make_in_list_sql_clause( @@ -1547,11 +1547,37 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore): txn.execute(sql, [max_pos] + args) return {row[0]: row[1] for row in txn} + # It's easier to look at the `sliding_sync_joined_rooms` table and avoid all of + # the joins and sub-queries. + def bulk_get_max_event_pos_from_sliding_sync_tables_txn( + txn: LoggingTransaction, batched_room_ids: StrCollection + ) -> Dict[str, int]: + clause, args = make_in_list_sql_clause( + self.database_engine, "room_id", batched_room_ids + ) + sql = f""" + SELECT room_id, event_stream_ordering + FROM sliding_sync_joined_rooms + WHERE {clause} + ORDER BY event_stream_ordering DESC + """ + txn.execute(sql, args) + return {row[0]: row[1] for row in txn} + recheck_rooms: Set[str] = set() for batched in batch_iter(room_ids, 1000): - batch_results = await self.db_pool.runInteraction( - "_bulk_get_max_event_pos", bulk_get_max_event_pos_txn, batched - ) + if await self.have_finished_sliding_sync_background_jobs(): + batch_results = await self.db_pool.runInteraction( + "bulk_get_max_event_pos_from_sliding_sync_tables_txn", + bulk_get_max_event_pos_from_sliding_sync_tables_txn, + batched, + ) + else: + batch_results = await self.db_pool.runInteraction( + "bulk_get_max_event_pos_fallback_txn", + bulk_get_max_event_pos_fallback_txn, + batched, + ) for room_id, stream_ordering in batch_results.items(): if stream_ordering <= now_token.stream: results.update(batch_results) diff --git a/synapse/types/storage/__init__.py b/synapse/types/storage/__init__.py new file mode 100644 index 000000000..fae5449bc --- /dev/null +++ b/synapse/types/storage/__init__.py @@ -0,0 +1,47 @@ +# +# This file is licensed under the Affero General Public License (AGPL) version 3. +# +# Copyright (C) 2024 New Vector, Ltd +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU Affero General Public License as +# published by the Free Software Foundation, either version 3 of the +# License, or (at your option) any later version. +# +# See the GNU Affero General Public License for more details: +# . +# +# Originally licensed under the Apache License, Version 2.0: +# . +# +# [This file includes modifications made by New Vector Limited] +# +# + + +class _BackgroundUpdates: + EVENT_ORIGIN_SERVER_TS_NAME = "event_origin_server_ts" + EVENT_FIELDS_SENDER_URL_UPDATE_NAME = "event_fields_sender_url" + DELETE_SOFT_FAILED_EXTREMITIES = "delete_soft_failed_extremities" + POPULATE_STREAM_ORDERING2 = "populate_stream_ordering2" + INDEX_STREAM_ORDERING2 = "index_stream_ordering2" + INDEX_STREAM_ORDERING2_CONTAINS_URL = "index_stream_ordering2_contains_url" + INDEX_STREAM_ORDERING2_ROOM_ORDER = "index_stream_ordering2_room_order" + INDEX_STREAM_ORDERING2_ROOM_STREAM = "index_stream_ordering2_room_stream" + INDEX_STREAM_ORDERING2_TS = "index_stream_ordering2_ts" + REPLACE_STREAM_ORDERING_COLUMN = "replace_stream_ordering_column" + + EVENT_EDGES_DROP_INVALID_ROWS = "event_edges_drop_invalid_rows" + EVENT_EDGES_REPLACE_INDEX = "event_edges_replace_index" + + EVENTS_POPULATE_STATE_KEY_REJECTIONS = "events_populate_state_key_rejections" + + EVENTS_JUMP_TO_DATE_INDEX = "events_jump_to_date_index" + + SLIDING_SYNC_PREFILL_JOINED_ROOMS_TO_RECALCULATE_TABLE_BG_UPDATE = ( + "sliding_sync_prefill_joined_rooms_to_recalculate_table_bg_update" + ) + SLIDING_SYNC_JOINED_ROOMS_BG_UPDATE = "sliding_sync_joined_rooms_bg_update" + SLIDING_SYNC_MEMBERSHIP_SNAPSHOTS_BG_UPDATE = ( + "sliding_sync_membership_snapshots_bg_update" + ) diff --git a/tests/storage/test_sliding_sync_tables.py b/tests/storage/test_sliding_sync_tables.py index 61dccc807..35917505a 100644 --- a/tests/storage/test_sliding_sync_tables.py +++ b/tests/storage/test_sliding_sync_tables.py @@ -34,11 +34,11 @@ from synapse.rest.client import login, room from synapse.server import HomeServer from synapse.storage.databases.main.events import DeltaState from synapse.storage.databases.main.events_bg_updates import ( - _BackgroundUpdates, _resolve_stale_data_in_sliding_sync_joined_rooms_table, _resolve_stale_data_in_sliding_sync_membership_snapshots_table, ) from synapse.types import create_requester +from synapse.types.storage import _BackgroundUpdates from synapse.util import Clock from tests.test_utils.event_injection import create_event