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synapse/tests/rest/client/test_room_batch.py
Nick Mills-Barrett e3a49f4784
Fix missing sync events during historical batch imports (#12319)
Discovered after much in-depth investigation in #12281.

Closes: #12281
Closes: #3305

Signed off by: Nick Mills-Barrett nick@beeper.com
2022-04-13 11:38:35 +01:00

301 lines
11 KiB
Python

import logging
from typing import List, Tuple
from unittest.mock import Mock, patch
from twisted.test.proto_helpers import MemoryReactor
from synapse.api.constants import EventContentFields, EventTypes
from synapse.appservice import ApplicationService
from synapse.rest import admin
from synapse.rest.client import login, register, room, room_batch, sync
from synapse.server import HomeServer
from synapse.types import JsonDict, RoomStreamToken
from synapse.util import Clock
from tests import unittest
logger = logging.getLogger(__name__)
def _create_join_state_events_for_batch_send_request(
virtual_user_ids: List[str],
insert_time: int,
) -> List[JsonDict]:
return [
{
"type": EventTypes.Member,
"sender": virtual_user_id,
"origin_server_ts": insert_time,
"content": {
"membership": "join",
"displayname": "display-name-for-%s" % (virtual_user_id,),
},
"state_key": virtual_user_id,
}
for virtual_user_id in virtual_user_ids
]
def _create_message_events_for_batch_send_request(
virtual_user_id: str, insert_time: int, count: int
) -> List[JsonDict]:
return [
{
"type": EventTypes.Message,
"sender": virtual_user_id,
"origin_server_ts": insert_time,
"content": {
"msgtype": "m.text",
"body": "Historical %d" % (i),
EventContentFields.MSC2716_HISTORICAL: True,
},
}
for i in range(count)
]
class RoomBatchTestCase(unittest.HomeserverTestCase):
"""Test importing batches of historical messages."""
servlets = [
admin.register_servlets_for_client_rest_resource,
room_batch.register_servlets,
room.register_servlets,
register.register_servlets,
login.register_servlets,
sync.register_servlets,
]
def make_homeserver(self, reactor: MemoryReactor, clock: Clock) -> HomeServer:
config = self.default_config()
self.appservice = ApplicationService(
token="i_am_an_app_service",
hostname="test",
id="1234",
namespaces={"users": [{"regex": r"@as_user.*", "exclusive": True}]},
# Note: this user does not have to match the regex above
sender="@as_main:test",
)
mock_load_appservices = Mock(return_value=[self.appservice])
with patch(
"synapse.storage.databases.main.appservice.load_appservices",
mock_load_appservices,
):
hs = self.setup_test_homeserver(config=config)
return hs
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.clock = clock
self.storage = hs.get_storage()
self.virtual_user_id, _ = self.register_appservice_user(
"as_user_potato", self.appservice.token
)
def _create_test_room(self) -> Tuple[str, str, str, str]:
room_id = self.helper.create_room_as(
self.appservice.sender, tok=self.appservice.token
)
res_a = self.helper.send_event(
room_id=room_id,
type=EventTypes.Message,
content={
"msgtype": "m.text",
"body": "A",
},
tok=self.appservice.token,
)
event_id_a = res_a["event_id"]
res_b = self.helper.send_event(
room_id=room_id,
type=EventTypes.Message,
content={
"msgtype": "m.text",
"body": "B",
},
tok=self.appservice.token,
)
event_id_b = res_b["event_id"]
res_c = self.helper.send_event(
room_id=room_id,
type=EventTypes.Message,
content={
"msgtype": "m.text",
"body": "C",
},
tok=self.appservice.token,
)
event_id_c = res_c["event_id"]
return room_id, event_id_a, event_id_b, event_id_c
@unittest.override_config({"experimental_features": {"msc2716_enabled": True}})
def test_same_state_groups_for_whole_historical_batch(self) -> None:
"""Make sure that when using the `/batch_send` endpoint to import a
bunch of historical messages, it re-uses the same `state_group` across
the whole batch. This is an easy optimization to make sure we're getting
right because the state for the whole batch is contained in
`state_events_at_start` and can be shared across everything.
"""
time_before_room = int(self.clock.time_msec())
room_id, event_id_a, _, _ = self._create_test_room()
channel = self.make_request(
"POST",
"/_matrix/client/unstable/org.matrix.msc2716/rooms/%s/batch_send?prev_event_id=%s"
% (room_id, event_id_a),
content={
"events": _create_message_events_for_batch_send_request(
self.virtual_user_id, time_before_room, 3
),
"state_events_at_start": _create_join_state_events_for_batch_send_request(
[self.virtual_user_id], time_before_room
),
},
access_token=self.appservice.token,
)
self.assertEqual(channel.code, 200, channel.result)
# Get the historical event IDs that we just imported
historical_event_ids = channel.json_body["event_ids"]
self.assertEqual(len(historical_event_ids), 3)
# Fetch the state_groups
state_group_map = self.get_success(
self.storage.state.get_state_groups_ids(room_id, historical_event_ids)
)
# We expect all of the historical events to be using the same state_group
# so there should only be a single state_group here!
self.assertEqual(
len(state_group_map.keys()),
1,
"Expected a single state_group to be returned by saw state_groups=%s"
% (state_group_map.keys(),),
)
@unittest.override_config({"experimental_features": {"msc2716_enabled": True}})
def test_sync_while_batch_importing(self) -> None:
"""
Make sure that /sync correctly returns full room state when a user joins
during ongoing batch backfilling.
See: https://github.com/matrix-org/synapse/issues/12281
"""
# Create user who will be invited & join room
user_id = self.register_user("beep", "test")
user_tok = self.login("beep", "test")
time_before_room = int(self.clock.time_msec())
# Create a room with some events
room_id, _, _, _ = self._create_test_room()
# Invite the user
self.helper.invite(
room_id, src=self.appservice.sender, tok=self.appservice.token, targ=user_id
)
# Create another room, send a bunch of events to advance the stream token
other_room_id = self.helper.create_room_as(
self.appservice.sender, tok=self.appservice.token
)
for _ in range(5):
self.helper.send_event(
room_id=other_room_id,
type=EventTypes.Message,
content={"msgtype": "m.text", "body": "C"},
tok=self.appservice.token,
)
# Join the room as the normal user
self.helper.join(room_id, user_id, tok=user_tok)
# Create an event to hang the historical batch from - In order to see
# the failure case originally reported in #12281, the historical batch
# must be hung from the most recent event in the room so the base
# insertion event ends up with the highest `topogological_ordering`
# (`depth`) in the room but will have a negative `stream_ordering`
# because it's a `historical` event. Previously, when assembling the
# `state` for the `/sync` response, the bugged logic would sort by
# `topological_ordering` descending and pick up the base insertion
# event because it has a negative `stream_ordering` below the given
# pagination token. Now we properly sort by `stream_ordering`
# descending which puts `historical` events with a negative
# `stream_ordering` way at the bottom and aren't selected as expected.
response = self.helper.send_event(
room_id=room_id,
type=EventTypes.Message,
content={
"msgtype": "m.text",
"body": "C",
},
tok=self.appservice.token,
)
event_to_hang_id = response["event_id"]
channel = self.make_request(
"POST",
"/_matrix/client/unstable/org.matrix.msc2716/rooms/%s/batch_send?prev_event_id=%s"
% (room_id, event_to_hang_id),
content={
"events": _create_message_events_for_batch_send_request(
self.virtual_user_id, time_before_room, 3
),
"state_events_at_start": _create_join_state_events_for_batch_send_request(
[self.virtual_user_id], time_before_room
),
},
access_token=self.appservice.token,
)
self.assertEqual(channel.code, 200, channel.result)
# Now we need to find the invite + join events stream tokens so we can sync between
main_store = self.hs.get_datastores().main
events, next_key = self.get_success(
main_store.get_recent_events_for_room(
room_id,
50,
end_token=main_store.get_room_max_token(),
),
)
invite_event_position = None
for event in events:
if (
event.type == "m.room.member"
and event.content["membership"] == "invite"
):
invite_event_position = self.get_success(
main_store.get_topological_token_for_event(event.event_id)
)
break
assert invite_event_position is not None, "No invite event found"
# Remove the topological order from the token by re-creating w/stream only
invite_event_position = RoomStreamToken(None, invite_event_position.stream)
# Sync everything after this token
since_token = self.get_success(invite_event_position.to_string(main_store))
sync_response = self.make_request(
"GET",
f"/sync?since={since_token}",
access_token=user_tok,
)
# Assert that, for this room, the user was considered to have joined and thus
# receives the full state history
state_event_types = [
event["type"]
for event in sync_response.json_body["rooms"]["join"][room_id]["state"][
"events"
]
]
assert (
"m.room.create" in state_event_types
), "Missing room full state in sync response"