mirror of
https://github.com/element-hq/synapse.git
synced 2026-05-13 19:23:12 +00:00
Matthew Hodgson
ac26cfac83
--- Summary: Synapse Twisted → asyncio Migration What's been built (Phases 0-7) — 10 new files, ~3200 lines, 96 tests Every Twisted component has an asyncio-native replacement ready: ┌──────────────────┬───────────────────────────────────────────────┬─────────────────────────────────────────────────────────┬───────────────────────────────────────────────┐ │ Component │ Twisted Original │ asyncio Replacement │ File │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ LoggingContext │ threading.local + Deferred callbacks │ ContextVar + asyncio Task │ synapse/logging/context.py (native functions) │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ Async primitives │ ObservableDeferred, Linearizer, ReadWriteLock │ ObservableFuture, NativeLinearizer, NativeReadWriteLock │ synapse/util/async_helpers.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ Cache │ DeferredCache │ FutureCache │ synapse/util/caches/future_cache.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ Clock │ Clock (Twisted reactor) │ NativeClock (asyncio) │ synapse/util/clock.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ Database │ adbapi.ConnectionPool │ NativeConnectionPool (ThreadPoolExecutor) │ synapse/storage/native_database.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ HTTP Client │ treq + Twisted Agent │ aiohttp.ClientSession │ synapse/http/native_client.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ HTTP Server │ JsonResource + Twisted Site │ NativeJsonResource + aiohttp.web │ synapse/http/native_server.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ Replication │ LineOnlyReceiver (Twisted Protocol) │ asyncio.StreamReader/Writer │ synapse/replication/tcp/native_protocol.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ Event loop │ ISynapseReactor │ ISynapseEventLoop │ synapse/types/__init__.py │ ├──────────────────┼───────────────────────────────────────────────┼─────────────────────────────────────────────────────────┼───────────────────────────────────────────────┤ │ Test helper │ — │ FakeAsyncioLoop │ tests/async_helpers.py │ └──────────────────┴───────────────────────────────────────────────┴─────────────────────────────────────────────────────────┴───────────────────────────────────────────────┘ What's been wired in safely — 224 files changed, 0 regressions - MemoryReactor type hint → Any across 198 test files (cosmetic) - synapse/http/server.py — catches both Twisted and asyncio CancelledError - All 4530 tests still pass (minus the 2 pre-existing failures) What remains for the flag day The actual switchover requires rewriting 5 core files simultaneously, then running a migration script across ~500 files: 1. tests/unittest.py + tests/server.py — switch from twisted.trial.TestCase to unittest.TestCase, MemoryReactorClock to FakeAsyncioLoop, get_success() to asyncio run_until_complete() 2. synapse/logging/context.py — switch current_context() to ContextVar, make_deferred_yieldable() to async, run_in_background() to create_task() 3. synapse/util/async_helpers.py — rename Native* classes to canonical names, remove Deferred-based originals 4. Migration script — update all CancelledError, defer.*, Deferred imports across ~500 files 5. pyproject.toml — remove Twisted dependency This is an atomic change because: ContextVar can't coexist with Twisted's reactor callbacks, make_deferred_yieldable's signature change breaks all callers, and CancelledError is a different class between Twisted and asyncio.
506 lines
18 KiB
Python
506 lines
18 KiB
Python
#
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# This file is licensed under the Affero General Public License (AGPL) version 3.
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#
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# Copyright (C) 2024 New Vector, Ltd
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# See the GNU Affero General Public License for more details:
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# <https://www.gnu.org/licenses/agpl-3.0.html>.
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#
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import logging
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from unittest.mock import patch
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from parameterized import parameterized, parameterized_class
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from typing import Any as MemoryReactor # was: MemoryReactor from Twisted
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import synapse.rest.admin
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from synapse.api.constants import EventTypes
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from synapse.api.errors import Codes
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from synapse.handlers.sliding_sync import room_lists
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from synapse.rest.client import login, room, sync
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from synapse.server import HomeServer
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from synapse.storage.databases.main.sliding_sync import CONNECTION_EXPIRY
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from synapse.util.clock import Clock
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from tests.rest.client.sliding_sync.test_sliding_sync import SlidingSyncBase
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logger = logging.getLogger(__name__)
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# FIXME: This can be removed once we bump `SCHEMA_COMPAT_VERSION` and run the
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# foreground update for
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# `sliding_sync_joined_rooms`/`sliding_sync_membership_snapshots` (tracked by
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# https://github.com/element-hq/synapse/issues/17623)
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@parameterized_class(
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("use_new_tables",),
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[
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(True,),
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(False,),
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],
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class_name_func=lambda cls,
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num,
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params_dict: f"{cls.__name__}_{'new' if params_dict['use_new_tables'] else 'fallback'}",
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)
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class SlidingSyncConnectionTrackingTestCase(SlidingSyncBase):
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"""
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Test connection tracking in the Sliding Sync API.
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"""
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servlets = [
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synapse.rest.admin.register_servlets,
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login.register_servlets,
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room.register_servlets,
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sync.register_servlets,
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]
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def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
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self.store = hs.get_datastores().main
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self.storage_controllers = hs.get_storage_controllers()
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super().prepare(reactor, clock, hs)
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def test_rooms_required_state_incremental_sync_LIVE(self) -> None:
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"""Test that we only get state updates in incremental sync for rooms
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we've already seen (LIVE).
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"""
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user1_id = self.register_user("user1", "pass")
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user1_tok = self.login(user1_id, "pass")
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user2_id = self.register_user("user2", "pass")
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user2_tok = self.login(user2_id, "pass")
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room_id1 = self.helper.create_room_as(user2_id, tok=user2_tok)
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self.helper.join(room_id1, user1_id, tok=user1_tok)
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# Make the Sliding Sync request
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sync_body = {
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"lists": {
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"foo-list": {
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"ranges": [[0, 1]],
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"required_state": [
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[EventTypes.Create, ""],
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[EventTypes.RoomHistoryVisibility, ""],
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# This one doesn't exist in the room
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[EventTypes.Name, ""],
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],
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"timeline_limit": 0,
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}
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}
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}
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response_body, from_token = self.do_sync(sync_body, tok=user1_tok)
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state_map = self.get_success(
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self.storage_controllers.state.get_current_state(room_id1)
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)
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self._assertRequiredStateIncludes(
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response_body["rooms"][room_id1]["required_state"],
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{
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state_map[(EventTypes.Create, "")],
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state_map[(EventTypes.RoomHistoryVisibility, "")],
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},
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exact=True,
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)
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# Send a state event
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self.helper.send_state(
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room_id1, EventTypes.Name, body={"name": "foo"}, tok=user2_tok
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)
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response_body, _ = self.do_sync(sync_body, since=from_token, tok=user1_tok)
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state_map = self.get_success(
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self.storage_controllers.state.get_current_state(room_id1)
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)
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self.assertNotIn("initial", response_body["rooms"][room_id1])
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self._assertRequiredStateIncludes(
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response_body["rooms"][room_id1]["required_state"],
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{
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state_map[(EventTypes.Name, "")],
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},
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exact=True,
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)
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@parameterized.expand([(False,), (True,)])
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def test_rooms_timeline_incremental_sync_PREVIOUSLY(self, limited: bool) -> None:
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"""
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Test getting room data where we have previously sent down the room, but
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we missed sending down some timeline events previously and so its status
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is considered PREVIOUSLY.
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There are two versions of this test, one where there are more messages
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than the timeline limit, and one where there isn't.
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"""
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user1_id = self.register_user("user1", "pass")
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user1_tok = self.login(user1_id, "pass")
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room_id1 = self.helper.create_room_as(user1_id, tok=user1_tok)
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room_id2 = self.helper.create_room_as(user1_id, tok=user1_tok)
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self.helper.send(room_id1, "msg", tok=user1_tok)
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timeline_limit = 5
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sync_body = {
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"lists": {
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"foo-list": {
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"ranges": [[0, 0]],
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"required_state": [],
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"timeline_limit": timeline_limit,
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}
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},
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"conn_id": "conn_id",
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}
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# The first room gets sent down the initial sync
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response_body, initial_from_token = self.do_sync(sync_body, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id1}, response_body["rooms"]
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)
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# We now send down some events in room1 (depending on the test param).
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expected_events = [] # The set of events in the timeline
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if limited:
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for _ in range(10):
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resp = self.helper.send(room_id1, "msg1", tok=user1_tok)
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expected_events.append(resp["event_id"])
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else:
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resp = self.helper.send(room_id1, "msg1", tok=user1_tok)
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expected_events.append(resp["event_id"])
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# A second messages happens in the other room, so room1 won't get sent down.
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self.helper.send(room_id2, "msg", tok=user1_tok)
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# Only the second room gets sent down sync.
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response_body, from_token = self.do_sync(
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sync_body, since=initial_from_token, tok=user1_tok
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)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id2}, response_body["rooms"]
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)
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# We now send another event to room1, so we should sync all the missing events.
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resp = self.helper.send(room_id1, "msg2", tok=user1_tok)
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expected_events.append(resp["event_id"])
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# This sync should contain the messages from room1 not yet sent down.
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response_body, _ = self.do_sync(sync_body, since=from_token, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id1}, response_body["rooms"]
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)
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self.assertNotIn("initial", response_body["rooms"][room_id1])
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self.assertEqual(
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[ev["event_id"] for ev in response_body["rooms"][room_id1]["timeline"]],
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expected_events[-timeline_limit:],
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)
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self.assertEqual(response_body["rooms"][room_id1]["limited"], limited)
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self.assertEqual(response_body["rooms"][room_id1].get("required_state"), None)
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def test_rooms_required_state_incremental_sync_PREVIOUSLY(self) -> None:
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"""
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Test getting room data where we have previously sent down the room, but
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we missed sending down some state previously and so its status is
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considered PREVIOUSLY.
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"""
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user1_id = self.register_user("user1", "pass")
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user1_tok = self.login(user1_id, "pass")
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room_id1 = self.helper.create_room_as(user1_id, tok=user1_tok)
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room_id2 = self.helper.create_room_as(user1_id, tok=user1_tok)
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self.helper.send(room_id1, "msg", tok=user1_tok)
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sync_body = {
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"lists": {
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"foo-list": {
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"ranges": [[0, 0]],
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"required_state": [
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[EventTypes.Create, ""],
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[EventTypes.RoomHistoryVisibility, ""],
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# This one doesn't exist in the room
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[EventTypes.Name, ""],
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],
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"timeline_limit": 0,
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}
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},
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"conn_id": "conn_id",
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}
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# The first room gets sent down the initial sync
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response_body, initial_from_token = self.do_sync(sync_body, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id1}, response_body["rooms"]
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)
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# We now send down some state in room1
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resp = self.helper.send_state(
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room_id1, EventTypes.Name, {"name": "foo"}, tok=user1_tok
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)
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name_change_id = resp["event_id"]
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# A second messages happens in the other room, so room1 won't get sent down.
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self.helper.send(room_id2, "msg", tok=user1_tok)
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# Only the second room gets sent down sync.
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response_body, from_token = self.do_sync(
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sync_body, since=initial_from_token, tok=user1_tok
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)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id2}, response_body["rooms"]
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)
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# We now send another event to room1, so we should sync all the missing state.
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self.helper.send(room_id1, "msg", tok=user1_tok)
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# This sync should contain the state changes from room1.
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response_body, _ = self.do_sync(sync_body, since=from_token, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id1}, response_body["rooms"]
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)
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self.assertNotIn("initial", response_body["rooms"][room_id1])
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# We should only see the name change.
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self.assertEqual(
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[
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ev["event_id"]
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for ev in response_body["rooms"][room_id1]["required_state"]
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],
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[name_change_id],
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)
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def test_rooms_required_state_incremental_sync_NEVER(self) -> None:
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"""
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Test getting `required_state` where we have NEVER sent down the room before
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"""
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user1_id = self.register_user("user1", "pass")
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user1_tok = self.login(user1_id, "pass")
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room_id1 = self.helper.create_room_as(user1_id, tok=user1_tok)
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room_id2 = self.helper.create_room_as(user1_id, tok=user1_tok)
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self.helper.send(room_id1, "msg", tok=user1_tok)
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sync_body = {
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"lists": {
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"foo-list": {
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"ranges": [[0, 0]],
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"required_state": [
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[EventTypes.Create, ""],
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[EventTypes.RoomHistoryVisibility, ""],
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# This one doesn't exist in the room
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[EventTypes.Name, ""],
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],
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"timeline_limit": 1,
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}
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},
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}
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# A message happens in the other room, so room1 won't get sent down.
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self.helper.send(room_id2, "msg", tok=user1_tok)
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# Only the second room gets sent down sync.
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response_body, from_token = self.do_sync(sync_body, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id2}, response_body["rooms"]
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)
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# We now send another event to room1, so we should send down the full
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# room.
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self.helper.send(room_id1, "msg2", tok=user1_tok)
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# This sync should contain the messages from room1 not yet sent down.
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response_body, _ = self.do_sync(sync_body, since=from_token, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id1}, response_body["rooms"]
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)
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self.assertEqual(response_body["rooms"][room_id1]["initial"], True)
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state_map = self.get_success(
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self.storage_controllers.state.get_current_state(room_id1)
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)
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self._assertRequiredStateIncludes(
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response_body["rooms"][room_id1]["required_state"],
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{
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state_map[(EventTypes.Create, "")],
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state_map[(EventTypes.RoomHistoryVisibility, "")],
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},
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exact=True,
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)
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def test_rooms_timeline_incremental_sync_NEVER(self) -> None:
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"""
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Test getting timeline room data where we have NEVER sent down the room
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before
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"""
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user1_id = self.register_user("user1", "pass")
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user1_tok = self.login(user1_id, "pass")
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room_id1 = self.helper.create_room_as(user1_id, tok=user1_tok)
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room_id2 = self.helper.create_room_as(user1_id, tok=user1_tok)
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sync_body = {
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"lists": {
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"foo-list": {
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"ranges": [[0, 0]],
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"required_state": [],
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"timeline_limit": 5,
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}
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},
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}
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expected_events = []
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for _ in range(4):
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resp = self.helper.send(room_id1, "msg", tok=user1_tok)
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expected_events.append(resp["event_id"])
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# A message happens in the other room, so room1 won't get sent down.
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self.helper.send(room_id2, "msg", tok=user1_tok)
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# Only the second room gets sent down sync.
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response_body, from_token = self.do_sync(sync_body, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id2}, response_body["rooms"]
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)
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# We now send another event to room1 so it comes down sync
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resp = self.helper.send(room_id1, "msg2", tok=user1_tok)
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expected_events.append(resp["event_id"])
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# This sync should contain the messages from room1 not yet sent down.
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response_body, _ = self.do_sync(sync_body, since=from_token, tok=user1_tok)
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self.assertCountEqual(
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response_body["rooms"].keys(), {room_id1}, response_body["rooms"]
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)
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self.assertEqual(
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[ev["event_id"] for ev in response_body["rooms"][room_id1]["timeline"]],
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expected_events,
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)
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self.assertEqual(response_body["rooms"][room_id1]["limited"], True)
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self.assertEqual(response_body["rooms"][room_id1]["initial"], True)
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@patch("synapse.handlers.sliding_sync.room_lists.NUM_ROOMS_THRESHOLD", new=5)
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def test_sliding_sync_connection_expires_with_too_much_data(self) -> None:
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"""
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Test that if we have too much data to send down for incremental sync,
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we expire the connection and ask the client to do a full resync.
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Connections are only expired if they have not been used for a minimum
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amount of time (MINIMUM_NOT_USED_AGE_EXPIRY) to avoid expiring
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connections that are actively being used.
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"""
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user1_id = self.register_user("user1", "pass")
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user1_tok = self.login(user1_id, "pass")
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user2_id = self.register_user("user2", "pass")
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user2_tok = self.login(user2_id, "pass")
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# Create enough rooms that we can later trigger the too much data case
|
|
room_ids = []
|
|
for _ in range(room_lists.NUM_ROOMS_THRESHOLD + 2):
|
|
room_id = self.helper.create_room_as(user2_id, tok=user2_tok)
|
|
self.helper.join(room_id, user1_id, tok=user1_tok)
|
|
room_ids.append(room_id)
|
|
|
|
# Make sure we don't hit ratelimits
|
|
self.reactor.advance(60 * 1000)
|
|
|
|
# Make the Sliding Sync request
|
|
sync_body = {
|
|
"lists": {
|
|
"foo-list": {
|
|
"ranges": [[0, 1000]],
|
|
"required_state": [],
|
|
"timeline_limit": 1,
|
|
}
|
|
}
|
|
}
|
|
|
|
response_body, from_token = self.do_sync(sync_body, tok=user1_tok)
|
|
|
|
# Check we got all the rooms down
|
|
for room_id in room_ids:
|
|
self.assertIn(room_id, response_body["rooms"])
|
|
|
|
# Send a lot of events to cause the connection to expire
|
|
for room_id in room_ids:
|
|
self.helper.send(room_id, "msg", tok=user2_tok)
|
|
|
|
# If we don't advance the clock then we won't expire the connection.
|
|
response_body, from_token = self.do_sync(sync_body, tok=user1_tok)
|
|
|
|
# Send some more events.
|
|
for room_id in room_ids:
|
|
self.helper.send(room_id, "msg", tok=user2_tok)
|
|
|
|
# Advance the clock to ensure that the last_used_ts is old enough
|
|
self.reactor.advance(2 * room_lists.MINIMUM_NOT_USED_AGE_EXPIRY.as_secs())
|
|
|
|
# This sync should now raise SlidingSyncUnknownPosition
|
|
channel = self.make_sync_request(sync_body, since=from_token, tok=user1_tok)
|
|
self.assertEqual(channel.code, 400)
|
|
self.assertEqual(channel.json_body["errcode"], Codes.UNKNOWN_POS)
|
|
|
|
def test_sliding_sync_connection_expires_after_time(self) -> None:
|
|
"""
|
|
Test that if we don't use a sliding sync connection for a long time,
|
|
we expire the connection and ask the client to do a full resync.
|
|
"""
|
|
|
|
user1_id = self.register_user("user1", "pass")
|
|
user1_tok = self.login(user1_id, "pass")
|
|
user2_id = self.register_user("user2", "pass")
|
|
user2_tok = self.login(user2_id, "pass")
|
|
|
|
room_id = self.helper.create_room_as(user2_id, tok=user2_tok)
|
|
self.helper.join(room_id, user1_id, tok=user1_tok)
|
|
|
|
# Make the Sliding Sync request
|
|
sync_body = {
|
|
"lists": {
|
|
"foo-list": {
|
|
"ranges": [[0, 1000]],
|
|
"required_state": [],
|
|
"timeline_limit": 1,
|
|
}
|
|
}
|
|
}
|
|
|
|
_, from_token = self.do_sync(sync_body, tok=user1_tok)
|
|
|
|
# We can keep syncing so long as the interval between requests is less
|
|
# than CONNECTION_EXPIRY
|
|
for _ in range(5):
|
|
self.reactor.advance(0.5 * CONNECTION_EXPIRY.as_secs())
|
|
|
|
_, from_token = self.do_sync(sync_body, tok=user1_tok)
|
|
|
|
# ... but if we wait too long, the connection expires
|
|
self.reactor.advance(1 + CONNECTION_EXPIRY.as_secs())
|
|
|
|
# This sync should now raise SlidingSyncUnknownPosition
|
|
channel = self.make_sync_request(sync_body, since=from_token, tok=user1_tok)
|
|
self.assertEqual(channel.code, 400)
|
|
self.assertEqual(channel.json_body["errcode"], Codes.UNKNOWN_POS)
|