Wait for lazy join to complete when getting current state (#12872)

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Erik Johnston 2022-06-01 16:02:53 +01:00 committed by GitHub
parent 782cb7420a
commit 888a29f412
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33 changed files with 361 additions and 82 deletions

1
changelog.d/12872.misc Normal file
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@ -0,0 +1 @@
Faster room joins: when querying the current state of the room, wait for state to be populated.

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@ -152,6 +152,7 @@ class ThirdPartyEventRules:
self.third_party_rules = None
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self._check_event_allowed_callbacks: List[CHECK_EVENT_ALLOWED_CALLBACK] = []
self._on_create_room_callbacks: List[ON_CREATE_ROOM_CALLBACK] = []
@ -463,7 +464,7 @@ class ThirdPartyEventRules:
Returns:
A dict mapping (event type, state key) to state event.
"""
state_ids = await self.store.get_filtered_current_state_ids(room_id)
state_ids = await self._storage_controllers.state.get_current_state_ids(room_id)
room_state_events = await self.store.get_events(state_ids.values())
state_events = {}

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@ -118,6 +118,8 @@ class FederationServer(FederationBase):
self.state = hs.get_state_handler()
self._event_auth_handler = hs.get_event_auth_handler()
self._state_storage_controller = hs.get_storage_controllers().state
self.device_handler = hs.get_device_handler()
# Ensure the following handlers are loaded since they register callbacks
@ -1221,7 +1223,7 @@ class FederationServer(FederationBase):
Raises:
AuthError if the server does not match the ACL
"""
state_ids = await self.store.get_current_state_ids(room_id)
state_ids = await self._state_storage_controller.get_current_state_ids(room_id)
acl_event_id = state_ids.get((EventTypes.ServerACL, ""))
if not acl_event_id:

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@ -166,7 +166,7 @@ class DeviceWorkerHandler:
possibly_changed = set(changed)
possibly_left = set()
for room_id in rooms_changed:
current_state_ids = await self.store.get_current_state_ids(room_id)
current_state_ids = await self._state_storage.get_current_state_ids(room_id)
# The user may have left the room
# TODO: Check if they actually did or if we were just invited.

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@ -45,6 +45,7 @@ class DirectoryHandler:
self.appservice_handler = hs.get_application_service_handler()
self.event_creation_handler = hs.get_event_creation_handler()
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.config = hs.config
self.enable_room_list_search = hs.config.roomdirectory.enable_room_list_search
self.require_membership = hs.config.server.require_membership_for_aliases
@ -463,7 +464,11 @@ class DirectoryHandler:
making_public = visibility == "public"
if making_public:
room_aliases = await self.store.get_aliases_for_room(room_id)
canonical_alias = await self.store.get_canonical_alias_for_room(room_id)
canonical_alias = (
await self._storage_controllers.state.get_canonical_alias_for_room(
room_id
)
)
if canonical_alias:
room_aliases.append(canonical_alias)

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@ -750,7 +750,9 @@ class FederationHandler:
# Note that this requires the /send_join request to come back to the
# same server.
if room_version.msc3083_join_rules:
state_ids = await self.store.get_current_state_ids(room_id)
state_ids = await self._state_storage_controller.get_current_state_ids(
room_id
)
if await self._event_auth_handler.has_restricted_join_rules(
state_ids, room_version
):
@ -1552,6 +1554,9 @@ class FederationHandler:
success = await self.store.clear_partial_state_room(room_id)
if success:
logger.info("State resync complete for %s", room_id)
self._storage_controllers.state.notify_room_un_partial_stated(
room_id
)
# TODO(faster_joins) update room stats and user directory?
return

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@ -217,7 +217,7 @@ class MessageHandler:
)
if membership == Membership.JOIN:
state_ids = await self.store.get_filtered_current_state_ids(
state_ids = await self._state_storage_controller.get_current_state_ids(
room_id, state_filter=state_filter
)
room_state = await self.store.get_events(state_ids.values())

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@ -134,6 +134,7 @@ class BasePresenceHandler(abc.ABC):
def __init__(self, hs: "HomeServer"):
self.clock = hs.get_clock()
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.presence_router = hs.get_presence_router()
self.state = hs.get_state_handler()
self.is_mine_id = hs.is_mine_id
@ -1348,7 +1349,10 @@ class PresenceHandler(BasePresenceHandler):
self._event_pos,
room_max_stream_ordering,
)
max_pos, deltas = await self.store.get_current_state_deltas(
(
max_pos,
deltas,
) = await self._storage_controllers.state.get_current_state_deltas(
self._event_pos, room_max_stream_ordering
)

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@ -87,6 +87,7 @@ class LoginDict(TypedDict):
class RegistrationHandler:
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.clock = hs.get_clock()
self.hs = hs
self.auth = hs.get_auth()
@ -528,7 +529,7 @@ class RegistrationHandler:
if requires_invite:
# If the server is in the room, check if the room is public.
state = await self.store.get_filtered_current_state_ids(
state = await self._storage_controllers.state.get_current_state_ids(
room_id, StateFilter.from_types([(EventTypes.JoinRules, "")])
)

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@ -107,6 +107,7 @@ class EventContext:
class RoomCreationHandler:
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.auth = hs.get_auth()
self.clock = hs.get_clock()
self.hs = hs
@ -480,8 +481,10 @@ class RoomCreationHandler:
if room_type == RoomTypes.SPACE:
types_to_copy.append((EventTypes.SpaceChild, None))
old_room_state_ids = await self.store.get_filtered_current_state_ids(
old_room_id, StateFilter.from_types(types_to_copy)
old_room_state_ids = (
await self._storage_controllers.state.get_current_state_ids(
old_room_id, StateFilter.from_types(types_to_copy)
)
)
# map from event_id to BaseEvent
old_room_state_events = await self.store.get_events(old_room_state_ids.values())
@ -558,8 +561,10 @@ class RoomCreationHandler:
)
# Transfer membership events
old_room_member_state_ids = await self.store.get_filtered_current_state_ids(
old_room_id, StateFilter.from_types([(EventTypes.Member, None)])
old_room_member_state_ids = (
await self._storage_controllers.state.get_current_state_ids(
old_room_id, StateFilter.from_types([(EventTypes.Member, None)])
)
)
# map from event_id to BaseEvent

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@ -50,6 +50,7 @@ EMPTY_THIRD_PARTY_ID = ThirdPartyInstanceID(None, None)
class RoomListHandler:
def __init__(self, hs: "HomeServer"):
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.hs = hs
self.enable_room_list_search = hs.config.roomdirectory.enable_room_list_search
self.response_cache: ResponseCache[
@ -274,7 +275,7 @@ class RoomListHandler:
if aliases:
result["aliases"] = aliases
current_state_ids = await self.store.get_current_state_ids(
current_state_ids = await self._storage_controllers.state.get_current_state_ids(
room_id, on_invalidate=cache_context.invalidate
)

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@ -68,6 +68,7 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
def __init__(self, hs: "HomeServer"):
self.hs = hs
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.auth = hs.get_auth()
self.state_handler = hs.get_state_handler()
self.config = hs.config
@ -994,7 +995,9 @@ class RoomMemberHandler(metaclass=abc.ABCMeta):
# If the host is in the room, but not one of the authorised hosts
# for restricted join rules, a remote join must be used.
room_version = await self.store.get_room_version(room_id)
current_state_ids = await self.store.get_current_state_ids(room_id)
current_state_ids = await self._storage_controllers.state.get_current_state_ids(
room_id
)
# If restricted join rules are not being used, a local join can always
# be used.

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@ -90,6 +90,7 @@ class RoomSummaryHandler:
def __init__(self, hs: "HomeServer"):
self._event_auth_handler = hs.get_event_auth_handler()
self._store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self._event_serializer = hs.get_event_client_serializer()
self._server_name = hs.hostname
self._federation_client = hs.get_federation_client()
@ -537,7 +538,7 @@ class RoomSummaryHandler:
Returns:
True if the room is accessible to the requesting user or server.
"""
state_ids = await self._store.get_current_state_ids(room_id)
state_ids = await self._storage_controllers.state.get_current_state_ids(room_id)
# If there's no state for the room, it isn't known.
if not state_ids:
@ -702,7 +703,9 @@ class RoomSummaryHandler:
# there should always be an entry
assert stats is not None, "unable to retrieve stats for %s" % (room_id,)
current_state_ids = await self._store.get_current_state_ids(room_id)
current_state_ids = await self._storage_controllers.state.get_current_state_ids(
room_id
)
create_event = await self._store.get_event(
current_state_ids[(EventTypes.Create, "")]
)
@ -760,7 +763,9 @@ class RoomSummaryHandler:
"""
# look for child rooms/spaces.
current_state_ids = await self._store.get_current_state_ids(room_id)
current_state_ids = await self._storage_controllers.state.get_current_state_ids(
room_id
)
events = await self._store.get_events_as_list(
[

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@ -40,6 +40,7 @@ class StatsHandler:
def __init__(self, hs: "HomeServer"):
self.hs = hs
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.state = hs.get_state_handler()
self.server_name = hs.hostname
self.clock = hs.get_clock()
@ -105,7 +106,10 @@ class StatsHandler:
logger.debug(
"Processing room stats %s->%s", self.pos, room_max_stream_ordering
)
max_pos, deltas = await self.store.get_current_state_deltas(
(
max_pos,
deltas,
) = await self._storage_controllers.state.get_current_state_deltas(
self.pos, room_max_stream_ordering
)

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@ -506,8 +506,10 @@ class SyncHandler:
# ensure that we always include current state in the timeline
current_state_ids: FrozenSet[str] = frozenset()
if any(e.is_state() for e in recents):
current_state_ids_map = await self.store.get_current_state_ids(
room_id
current_state_ids_map = (
await self._state_storage_controller.get_current_state_ids(
room_id
)
)
current_state_ids = frozenset(current_state_ids_map.values())
@ -574,8 +576,11 @@ class SyncHandler:
# ensure that we always include current state in the timeline
current_state_ids = frozenset()
if any(e.is_state() for e in loaded_recents):
current_state_ids_map = await self.store.get_current_state_ids(
room_id
# FIXME(faster_joins): We use the partial state here as
# we don't want to block `/sync` on finishing a lazy join.
# Is this the correct way of doing it?
current_state_ids_map = (
await self.store.get_partial_current_state_ids(room_id)
)
current_state_ids = frozenset(current_state_ids_map.values())

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@ -56,6 +56,7 @@ class UserDirectoryHandler(StateDeltasHandler):
super().__init__(hs)
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.server_name = hs.hostname
self.clock = hs.get_clock()
self.notifier = hs.get_notifier()
@ -174,7 +175,10 @@ class UserDirectoryHandler(StateDeltasHandler):
logger.debug(
"Processing user stats %s->%s", self.pos, room_max_stream_ordering
)
max_pos, deltas = await self.store.get_current_state_deltas(
(
max_pos,
deltas,
) = await self._storage_controllers.state.get_current_state_deltas(
self.pos, room_max_stream_ordering
)

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@ -194,6 +194,7 @@ class ModuleApi:
self._store: Union[
DataStore, "GenericWorkerSlavedStore"
] = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self._auth = hs.get_auth()
self._auth_handler = auth_handler
self._server_name = hs.hostname
@ -911,7 +912,7 @@ class ModuleApi:
The filtered state events in the room.
"""
state_ids = yield defer.ensureDeferred(
self._store.get_filtered_current_state_ids(
self._storage_controllers.state.get_current_state_ids(
room_id=room_id, state_filter=StateFilter.from_types(types)
)
)
@ -1289,20 +1290,16 @@ class ModuleApi:
# regardless of their state key
]
"""
state_filter = None
if event_filter:
# If a filter was provided, turn it into a StateFilter and retrieve a filtered
# view of the state.
state_filter = StateFilter.from_types(event_filter)
state_ids = await self._store.get_filtered_current_state_ids(
room_id,
state_filter,
)
else:
# If no filter was provided, get the whole state. We could also reuse the call
# to get_filtered_current_state_ids above, with `state_filter = StateFilter.all()`,
# but get_filtered_current_state_ids isn't cached and `get_current_state_ids`
# is, so using the latter when we can is better for perf.
state_ids = await self._store.get_current_state_ids(room_id)
state_ids = await self._storage_controllers.state.get_current_state_ids(
room_id,
state_filter,
)
state_events = await self._store.get_events(state_ids.values())

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@ -255,7 +255,9 @@ class Mailer:
user_display_name = user_id
async def _fetch_room_state(room_id: str) -> None:
room_state = await self.store.get_current_state_ids(room_id)
room_state = await self._state_storage_controller.get_current_state_ids(
room_id
)
state_by_room[room_id] = room_state
# Run at most 3 of these at once: sync does 10 at a time but email

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@ -418,6 +418,7 @@ class RoomStateRestServlet(RestServlet):
def __init__(self, hs: "HomeServer"):
self.auth = hs.get_auth()
self.store = hs.get_datastores().main
self._storage_controllers = hs.get_storage_controllers()
self.clock = hs.get_clock()
self._event_serializer = hs.get_event_client_serializer()
@ -430,7 +431,7 @@ class RoomStateRestServlet(RestServlet):
if not ret:
raise NotFoundError("Room not found")
event_ids = await self.store.get_current_state_ids(room_id)
event_ids = await self._storage_controllers.state.get_current_state_ids(room_id)
events = await self.store.get_events(event_ids.values())
now = self.clock.time_msec()
room_state = self._event_serializer.serialize_events(events.values(), now)

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@ -77,7 +77,7 @@ class SQLBaseStore(metaclass=ABCMeta):
# Purge other caches based on room state.
self._attempt_to_invalidate_cache("get_room_summary", (room_id,))
self._attempt_to_invalidate_cache("get_current_state_ids", (room_id,))
self._attempt_to_invalidate_cache("get_partial_current_state_ids", (room_id,))
def _attempt_to_invalidate_cache(
self, cache_name: str, key: Optional[Collection[Any]]

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@ -18,7 +18,7 @@ from synapse.storage.controllers.persist_events import (
EventsPersistenceStorageController,
)
from synapse.storage.controllers.purge_events import PurgeEventsStorageController
from synapse.storage.controllers.state import StateGroupStorageController
from synapse.storage.controllers.state import StateStorageController
from synapse.storage.databases import Databases
from synapse.storage.databases.main import DataStore
@ -39,7 +39,7 @@ class StorageControllers:
self.main = stores.main
self.purge_events = PurgeEventsStorageController(hs, stores)
self.state = StateGroupStorageController(hs, stores)
self.state = StateStorageController(hs, stores)
self.persistence = None
if stores.persist_events:

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@ -994,7 +994,7 @@ class EventsPersistenceStorageController:
Assumes that we are only persisting events for one room at a time.
"""
existing_state = await self.main_store.get_current_state_ids(room_id)
existing_state = await self.main_store.get_partial_current_state_ids(room_id)
to_delete = [key for key in existing_state if key not in current_state]
@ -1083,7 +1083,7 @@ class EventsPersistenceStorageController:
# The server will leave the room, so we go and find out which remote
# users will still be joined when we leave.
if current_state is None:
current_state = await self.main_store.get_current_state_ids(room_id)
current_state = await self.main_store.get_partial_current_state_ids(room_id)
current_state = dict(current_state)
for key in delta.to_delete:
current_state.pop(key, None)

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@ -14,7 +14,9 @@
import logging
from typing import (
TYPE_CHECKING,
Any,
Awaitable,
Callable,
Collection,
Dict,
Iterable,
@ -24,9 +26,13 @@ from typing import (
Tuple,
)
from synapse.api.constants import EventTypes
from synapse.events import EventBase
from synapse.storage.state import StateFilter
from synapse.storage.util.partial_state_events_tracker import PartialStateEventsTracker
from synapse.storage.util.partial_state_events_tracker import (
PartialCurrentStateTracker,
PartialStateEventsTracker,
)
from synapse.types import MutableStateMap, StateMap
if TYPE_CHECKING:
@ -36,17 +42,27 @@ if TYPE_CHECKING:
logger = logging.getLogger(__name__)
class StateGroupStorageController:
"""High level interface to fetching state for event."""
class StateStorageController:
"""High level interface to fetching state for an event, or the current state
in a room.
"""
def __init__(self, hs: "HomeServer", stores: "Databases"):
self._is_mine_id = hs.is_mine_id
self.stores = stores
self._partial_state_events_tracker = PartialStateEventsTracker(stores.main)
self._partial_state_room_tracker = PartialCurrentStateTracker(stores.main)
def notify_event_un_partial_stated(self, event_id: str) -> None:
self._partial_state_events_tracker.notify_un_partial_stated(event_id)
def notify_room_un_partial_stated(self, room_id: str) -> None:
"""Notify that the room no longer has any partial state.
Must be called after `DataStore.clear_partial_state_room`
"""
self._partial_state_room_tracker.notify_un_partial_stated(room_id)
async def get_state_group_delta(
self, state_group: int
) -> Tuple[Optional[int], Optional[StateMap[str]]]:
@ -349,3 +365,93 @@ class StateGroupStorageController:
return await self.stores.state.store_state_group(
event_id, room_id, prev_group, delta_ids, current_state_ids
)
async def get_current_state_ids(
self,
room_id: str,
state_filter: Optional[StateFilter] = None,
on_invalidate: Optional[Callable[[], None]] = None,
) -> StateMap[str]:
"""Get the current state event ids for a room based on the
current_state_events table.
If a state filter is given (that is not `StateFilter.all()`) the query
result is *not* cached.
Args:
room_id: The room to get the state IDs of. state_filter: The state
filter used to fetch state from the
database.
on_invalidate: Callback for when the `get_current_state_ids` cache
for the room gets invalidated.
Returns:
The current state of the room.
"""
if not state_filter or state_filter.must_await_full_state(self._is_mine_id):
await self._partial_state_room_tracker.await_full_state(room_id)
if state_filter and not state_filter.is_full():
return await self.stores.main.get_partial_filtered_current_state_ids(
room_id, state_filter
)
else:
return await self.stores.main.get_partial_current_state_ids(
room_id, on_invalidate=on_invalidate
)
async def get_canonical_alias_for_room(self, room_id: str) -> Optional[str]:
"""Get canonical alias for room, if any
Args:
room_id: The room ID
Returns:
The canonical alias, if any
"""
state = await self.get_current_state_ids(
room_id, StateFilter.from_types([(EventTypes.CanonicalAlias, "")])
)
event_id = state.get((EventTypes.CanonicalAlias, ""))
if not event_id:
return None
event = await self.stores.main.get_event(event_id, allow_none=True)
if not event:
return None
return event.content.get("canonical_alias")
async def get_current_state_deltas(
self, prev_stream_id: int, max_stream_id: int
) -> Tuple[int, List[Dict[str, Any]]]:
"""Fetch a list of room state changes since the given stream id
Each entry in the result contains the following fields:
- stream_id (int)
- room_id (str)
- type (str): event type
- state_key (str):
- event_id (str|None): new event_id for this state key. None if the
state has been deleted.
- prev_event_id (str|None): previous event_id for this state key. None
if it's new state.
Args:
prev_stream_id: point to get changes since (exclusive)
max_stream_id: the point that we know has been correctly persisted
- ie, an upper limit to return changes from.
Returns:
A tuple consisting of:
- the stream id which these results go up to
- list of current_state_delta_stream rows. If it is empty, we are
up to date.
"""
# FIXME(faster_joins): what do we do here?
return await self.stores.main.get_partial_current_state_deltas(
prev_stream_id, max_stream_id
)

View File

@ -1139,6 +1139,24 @@ class RoomWorkerStore(CacheInvalidationWorkerStore):
keyvalues={"room_id": room_id},
)
async def is_partial_state_room(self, room_id: str) -> bool:
"""Checks if this room has partial state.
Returns true if this is a "partial-state" room, which means that the state
at events in the room, and `current_state_events`, may not yet be
complete.
"""
entry = await self.db_pool.simple_select_one_onecol(
table="partial_state_rooms",
keyvalues={"room_id": room_id},
retcol="room_id",
allow_none=True,
desc="is_partial_state_room",
)
return entry is not None
class _BackgroundUpdates:
REMOVE_TOMESTONED_ROOMS_BG_UPDATE = "remove_tombstoned_rooms_from_directory"

View File

@ -242,7 +242,7 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
Raises:
NotFoundError if the room is unknown
"""
state_ids = await self.get_current_state_ids(room_id)
state_ids = await self.get_partial_current_state_ids(room_id)
if not state_ids:
raise NotFoundError(f"Current state for room {room_id} is empty")
@ -258,10 +258,12 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
return create_event
@cached(max_entries=100000, iterable=True)
async def get_current_state_ids(self, room_id: str) -> StateMap[str]:
async def get_partial_current_state_ids(self, room_id: str) -> StateMap[str]:
"""Get the current state event ids for a room based on the
current_state_events table.
This may be the partial state if we're lazy joining the room.
Args:
room_id: The room to get the state IDs of.
@ -280,17 +282,19 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
return {(intern_string(r[0]), intern_string(r[1])): r[2] for r in txn}
return await self.db_pool.runInteraction(
"get_current_state_ids", _get_current_state_ids_txn
"get_partial_current_state_ids", _get_current_state_ids_txn
)
# FIXME: how should this be cached?
async def get_filtered_current_state_ids(
async def get_partial_filtered_current_state_ids(
self, room_id: str, state_filter: Optional[StateFilter] = None
) -> StateMap[str]:
"""Get the current state event of a given type for a room based on the
current_state_events table. This may not be as up-to-date as the result
of doing a fresh state resolution as per state_handler.get_current_state
This may be the partial state if we're lazy joining the room.
Args:
room_id
state_filter: The state filter used to fetch state
@ -306,7 +310,7 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
if not where_clause:
# We delegate to the cached version
return await self.get_current_state_ids(room_id)
return await self.get_partial_current_state_ids(room_id)
def _get_filtered_current_state_ids_txn(
txn: LoggingTransaction,
@ -334,30 +338,6 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore):
"get_filtered_current_state_ids", _get_filtered_current_state_ids_txn
)
async def get_canonical_alias_for_room(self, room_id: str) -> Optional[str]:
"""Get canonical alias for room, if any
Args:
room_id: The room ID
Returns:
The canonical alias, if any
"""
state = await self.get_filtered_current_state_ids(
room_id, StateFilter.from_types([(EventTypes.CanonicalAlias, "")])
)
event_id = state.get((EventTypes.CanonicalAlias, ""))
if not event_id:
return None
event = await self.get_event(event_id, allow_none=True)
if not event:
return None
return event.content.get("canonical_alias")
@cached(max_entries=50000)
async def _get_state_group_for_event(self, event_id: str) -> Optional[int]:
return await self.db_pool.simple_select_one_onecol(

View File

@ -27,7 +27,7 @@ class StateDeltasStore(SQLBaseStore):
# attribute. TODO: can we get static analysis to enforce this?
_curr_state_delta_stream_cache: StreamChangeCache
async def get_current_state_deltas(
async def get_partial_current_state_deltas(
self, prev_stream_id: int, max_stream_id: int
) -> Tuple[int, List[Dict[str, Any]]]:
"""Fetch a list of room state changes since the given stream id
@ -42,6 +42,8 @@ class StateDeltasStore(SQLBaseStore):
- prev_event_id (str|None): previous event_id for this state key. None
if it's new state.
This may be the partial state if we're lazy joining the room.
Args:
prev_stream_id: point to get changes since (exclusive)
max_stream_id: the point that we know has been correctly persisted

View File

@ -441,7 +441,9 @@ class UserDirectoryBackgroundUpdateStore(StateDeltasStore):
(EventTypes.RoomHistoryVisibility, ""),
)
current_state_ids = await self.get_filtered_current_state_ids( # type: ignore[attr-defined]
# Getting the partial state is fine, as we're not looking at membership
# events.
current_state_ids = await self.get_partial_filtered_current_state_ids( # type: ignore[attr-defined]
room_id, StateFilter.from_types(types_to_filter)
)

View File

@ -21,6 +21,7 @@ from twisted.internet.defer import Deferred
from synapse.logging.context import PreserveLoggingContext, make_deferred_yieldable
from synapse.storage.databases.main.events_worker import EventsWorkerStore
from synapse.storage.databases.main.room import RoomWorkerStore
from synapse.util import unwrapFirstError
logger = logging.getLogger(__name__)
@ -118,3 +119,62 @@ class PartialStateEventsTracker:
observer_set.discard(observer)
if not observer_set:
del self._observers[event_id]
class PartialCurrentStateTracker:
"""Keeps track of which rooms have partial state, after partial-state joins"""
def __init__(self, store: RoomWorkerStore):
self._store = store
# a map from room id to a set of Deferreds which are waiting for that room to be
# un-partial-stated.
self._observers: Dict[str, Set[Deferred[None]]] = defaultdict(set)
def notify_un_partial_stated(self, room_id: str) -> None:
"""Notify that we now have full current state for a given room
Unblocks any callers to await_full_state() for that room.
Args:
room_id: the room that now has full current state.
"""
observers = self._observers.pop(room_id, None)
if not observers:
return
logger.info(
"Notifying %i things waiting for un-partial-stating of room %s",
len(observers),
room_id,
)
with PreserveLoggingContext():
for o in observers:
o.callback(None)
async def await_full_state(self, room_id: str) -> None:
# We add the deferred immediately so that the DB call to check for
# partial state doesn't race when we unpartial the room.
d: Deferred[None] = Deferred()
self._observers.setdefault(room_id, set()).add(d)
try:
# Check if the room has partial current state or not.
has_partial_state = await self._store.is_partial_state_room(room_id)
if not has_partial_state:
return
logger.info(
"Awaiting un-partial-stating of room %s",
room_id,
)
await make_deferred_yieldable(d)
logger.info("Room has un-partial-stated")
finally:
# Remove the added observer, and remove the room entry if its empty.
ds = self._observers.get(room_id)
if ds is not None:
ds.discard(d)
if not ds:
self._observers.pop(room_id, None)

View File

@ -237,7 +237,9 @@ class FederationTestCase(unittest.FederatingHomeserverTestCase):
)
current_state = self.get_success(
self.store.get_events_as_list(
(self.get_success(self.store.get_current_state_ids(room_id))).values()
(
self.get_success(self.store.get_partial_current_state_ids(room_id))
).values()
)
)
@ -512,7 +514,7 @@ class FederationTestCase(unittest.FederatingHomeserverTestCase):
self.get_success(d)
# sanity-check: the room should show that the new user is a member
r = self.get_success(self.store.get_current_state_ids(room_id))
r = self.get_success(self.store.get_partial_current_state_ids(room_id))
self.assertEqual(r[(EventTypes.Member, other_user)], join_event.event_id)
return join_event

View File

@ -91,7 +91,9 @@ class FederationEventHandlerTests(unittest.FederatingHomeserverTestCase):
event_injection.inject_member_event(self.hs, room_id, OTHER_USER, "join")
)
initial_state_map = self.get_success(main_store.get_current_state_ids(room_id))
initial_state_map = self.get_success(
main_store.get_partial_current_state_ids(room_id)
)
auth_event_ids = [
initial_state_map[("m.room.create", "")],

View File

@ -146,7 +146,7 @@ class TypingNotificationsTestCase(unittest.HomeserverTestCase):
)
)
self.datastore.get_current_state_deltas = Mock(return_value=(0, None))
self.datastore.get_partial_current_state_deltas = Mock(return_value=(0, None))
self.datastore.get_to_device_stream_token = lambda: 0
self.datastore.get_new_device_msgs_for_remote = (

View File

@ -249,7 +249,9 @@ class UpgradeRoomTest(unittest.HomeserverTestCase):
new_space_id = channel.json_body["replacement_room"]
state_ids = self.get_success(self.store.get_current_state_ids(new_space_id))
state_ids = self.get_success(
self.store.get_partial_current_state_ids(new_space_id)
)
# Ensure the new room is still a space.
create_event = self.get_success(
@ -284,7 +286,9 @@ class UpgradeRoomTest(unittest.HomeserverTestCase):
new_room_id = channel.json_body["replacement_room"]
state_ids = self.get_success(self.store.get_current_state_ids(new_room_id))
state_ids = self.get_success(
self.store.get_partial_current_state_ids(new_room_id)
)
# Ensure the new room is the same type as the old room.
create_event = self.get_success(

View File

@ -17,8 +17,12 @@ from unittest import mock
from twisted.internet.defer import CancelledError, ensureDeferred
from synapse.storage.util.partial_state_events_tracker import PartialStateEventsTracker
from synapse.storage.util.partial_state_events_tracker import (
PartialCurrentStateTracker,
PartialStateEventsTracker,
)
from tests.test_utils import make_awaitable
from tests.unittest import TestCase
@ -115,3 +119,56 @@ class PartialStateEventsTrackerTestCase(TestCase):
self.tracker.notify_un_partial_stated("event1")
self.successResultOf(d2)
class PartialCurrentStateTrackerTestCase(TestCase):
def setUp(self) -> None:
self.mock_store = mock.Mock(spec_set=["is_partial_state_room"])
self.tracker = PartialCurrentStateTracker(self.mock_store)
def test_does_not_block_for_full_state_rooms(self):
self.mock_store.is_partial_state_room.return_value = make_awaitable(False)
self.successResultOf(ensureDeferred(self.tracker.await_full_state("room_id")))
def test_blocks_for_partial_room_state(self):
self.mock_store.is_partial_state_room.return_value = make_awaitable(True)
d = ensureDeferred(self.tracker.await_full_state("room_id"))
# there should be no result yet
self.assertNoResult(d)
# notifying that the room has been de-partial-stated should unblock
self.tracker.notify_un_partial_stated("room_id")
self.successResultOf(d)
def test_un_partial_state_race(self):
# We should correctly handle race between awaiting the state and us
# un-partialling the state
async def is_partial_state_room(events):
self.tracker.notify_un_partial_stated("room_id")
return True
self.mock_store.is_partial_state_room.side_effect = is_partial_state_room
self.successResultOf(ensureDeferred(self.tracker.await_full_state("room_id")))
def test_cancellation(self):
self.mock_store.is_partial_state_room.return_value = make_awaitable(True)
d1 = ensureDeferred(self.tracker.await_full_state("room_id"))
self.assertNoResult(d1)
d2 = ensureDeferred(self.tracker.await_full_state("room_id"))
self.assertNoResult(d2)
d1.cancel()
self.assertFailure(d1, CancelledError)
# d2 should still be waiting!
self.assertNoResult(d2)
self.tracker.notify_un_partial_stated("room_id")
self.successResultOf(d2)