Files
synapse/tests/storage/test__base.py
Matthew Hodgson ac26cfac83 Let me give you a clear summary of where this project stands:
---
  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.
2026-03-21 16:17:04 +00:00

179 lines
5.5 KiB
Python

#
# This file is licensed under the Affero General Public License (AGPL) version 3.
#
# Copyright 2015, 2016 OpenMarket Ltd
# Copyright (C) 2023 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:
# <https://www.gnu.org/licenses/agpl-3.0.html>.
#
# Originally licensed under the Apache License, Version 2.0:
# <http://www.apache.org/licenses/LICENSE-2.0>.
#
# [This file includes modifications made by New Vector Limited]
#
#
import secrets
from typing import Generator, cast
from typing import Any as MemoryReactor # was: MemoryReactor from Twisted
from synapse.server import HomeServer
from synapse.util.clock import Clock
from tests import unittest
class UpdateUpsertManyTests(unittest.HomeserverTestCase):
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.storage = hs.get_datastores().main
self.table_name = "table_" + secrets.token_hex(6)
self.get_success(
self.storage.db_pool.runInteraction(
"create",
lambda x, *a: x.execute(*a),
"CREATE TABLE %s (id INTEGER, username TEXT, value TEXT)"
% (self.table_name,),
)
)
self.get_success(
self.storage.db_pool.runInteraction(
"index",
lambda x, *a: x.execute(*a),
"CREATE UNIQUE INDEX %sindex ON %s(id, username)"
% (self.table_name, self.table_name),
)
)
def _dump_table_to_tuple(self) -> Generator[tuple[int, str, str], None, None]:
yield from cast(
list[tuple[int, str, str]],
self.get_success(
self.storage.db_pool.simple_select_list(
self.table_name, None, ["id, username, value"]
)
),
)
def test_upsert_many(self) -> None:
"""
Upsert_many will perform the upsert operation across a batch of data.
"""
# Add some data to an empty table
key_names = ["id", "username"]
value_names = ["value"]
key_values = [[1, "user1"], [2, "user2"]]
value_values = [["hello"], ["there"]]
self.get_success(
self.storage.db_pool.runInteraction(
"test",
self.storage.db_pool.simple_upsert_many_txn,
self.table_name,
key_names,
key_values,
value_names,
value_values,
)
)
# Check results are what we expect
self.assertEqual(
set(self._dump_table_to_tuple()),
{(1, "user1", "hello"), (2, "user2", "there")},
)
# Update only user2
key_values = [[2, "user2"]]
value_values = [["bleb"]]
self.get_success(
self.storage.db_pool.runInteraction(
"test",
self.storage.db_pool.simple_upsert_many_txn,
self.table_name,
key_names,
key_values,
value_names,
value_values,
)
)
# Check results are what we expect
self.assertEqual(
set(self._dump_table_to_tuple()),
{(1, "user1", "hello"), (2, "user2", "bleb")},
)
self.get_success(
self.storage.db_pool.runInteraction(
"test",
self.storage.db_pool.simple_upsert_many_txn,
self.table_name,
key_names=key_names,
key_values=[[2, "user2"]],
value_names=[],
value_values=[],
)
)
# Check results are what we expect
self.assertEqual(
set(self._dump_table_to_tuple()),
{(1, "user1", "hello"), (2, "user2", "bleb")},
)
def test_simple_update_many(self) -> None:
"""
simple_update_many performs many updates at once.
"""
# First add some data.
self.get_success(
self.storage.db_pool.simple_insert_many(
table=self.table_name,
keys=("id", "username", "value"),
values=[(1, "alice", "A"), (2, "bob", "B"), (3, "charlie", "C")],
desc="insert",
)
)
# Check the data made it to the table
self.assertEqual(
set(self._dump_table_to_tuple()),
{(1, "alice", "A"), (2, "bob", "B"), (3, "charlie", "C")},
)
# Now use simple_update_many
self.get_success(
self.storage.db_pool.simple_update_many(
table=self.table_name,
key_names=("username",),
key_values=(
("alice",),
("bob",),
("stranger",),
),
value_names=("value",),
value_values=(
("aaa!",),
("bbb!",),
("???",),
),
desc="update_many1",
)
)
# Check the table is how we expect:
# charlie has been left alone
self.assertEqual(
set(self._dump_table_to_tuple()),
{(1, "alice", "aaa!"), (2, "bob", "bbb!"), (3, "charlie", "C")},
)