From 126a15794c95002560709283640ad412636b29b8 Mon Sep 17 00:00:00 2001 From: Patrick Cloke Date: Fri, 14 Oct 2022 08:30:05 -0400 Subject: [PATCH] Do not allow a None-limit on PaginationConfig. (#14146) The callers either set a default limit or manually handle a None-limit later on (by setting a default value). Update the callers to always instantiate PaginationConfig with a default limit and then assume the limit is non-None. --- changelog.d/14146.removal | 1 + synapse/handlers/account_data.py | 2 +- synapse/handlers/initial_sync.py | 27 ++++-------------------- synapse/handlers/pagination.py | 5 ----- synapse/handlers/presence.py | 4 +++- synapse/handlers/receipts.py | 2 +- synapse/handlers/relations.py | 3 --- synapse/handlers/room.py | 2 +- synapse/handlers/typing.py | 2 +- synapse/rest/client/events.py | 4 +++- synapse/rest/client/initial_sync.py | 4 +++- synapse/rest/client/room.py | 4 +++- synapse/storage/databases/main/stream.py | 2 -- synapse/streams/__init__.py | 2 +- synapse/streams/config.py | 12 +++++------ tests/rest/client/test_typing.py | 3 ++- 16 files changed, 29 insertions(+), 50 deletions(-) create mode 100644 changelog.d/14146.removal diff --git a/changelog.d/14146.removal b/changelog.d/14146.removal new file mode 100644 index 000000000000..08fa752897eb --- /dev/null +++ b/changelog.d/14146.removal @@ -0,0 +1 @@ +Remove the unstable identifier for [MSC3715](https://github.com/matrix-org/matrix-doc/pull/3715). diff --git a/synapse/handlers/account_data.py b/synapse/handlers/account_data.py index 0478448b47ea..fc21d5800159 100644 --- a/synapse/handlers/account_data.py +++ b/synapse/handlers/account_data.py @@ -225,7 +225,7 @@ async def get_new_events( self, user: UserID, from_key: int, - limit: Optional[int], + limit: int, room_ids: Collection[str], is_guest: bool, explicit_room_id: Optional[str] = None, diff --git a/synapse/handlers/initial_sync.py b/synapse/handlers/initial_sync.py index 860c82c1107f..9c335e6863f4 100644 --- a/synapse/handlers/initial_sync.py +++ b/synapse/handlers/initial_sync.py @@ -57,13 +57,7 @@ def __init__(self, hs: "HomeServer"): self.validator = EventValidator() self.snapshot_cache: ResponseCache[ Tuple[ - str, - Optional[StreamToken], - Optional[StreamToken], - str, - Optional[int], - bool, - bool, + str, Optional[StreamToken], Optional[StreamToken], str, int, bool, bool ] ] = ResponseCache(hs.get_clock(), "initial_sync_cache") self._event_serializer = hs.get_event_client_serializer() @@ -154,11 +148,6 @@ async def _snapshot_all_rooms( public_room_ids = await self.store.get_public_room_ids() - if pagin_config.limit is not None: - limit = pagin_config.limit - else: - limit = 10 - serializer_options = SerializeEventConfig(as_client_event=as_client_event) async def handle_room(event: RoomsForUser) -> None: @@ -210,7 +199,7 @@ async def handle_room(event: RoomsForUser) -> None: run_in_background( self.store.get_recent_events_for_room, event.room_id, - limit=limit, + limit=pagin_config.limit, end_token=room_end_token, ), deferred_room_state, @@ -360,15 +349,11 @@ async def _room_initial_sync_parted( member_event_id ) - limit = pagin_config.limit if pagin_config else None - if limit is None: - limit = 10 - leave_position = await self.store.get_position_for_event(member_event_id) stream_token = leave_position.to_room_stream_token() messages, token = await self.store.get_recent_events_for_room( - room_id, limit=limit, end_token=stream_token + room_id, limit=pagin_config.limit, end_token=stream_token ) messages = await filter_events_for_client( @@ -420,10 +405,6 @@ async def _room_initial_sync_joined( now_token = self.hs.get_event_sources().get_current_token() - limit = pagin_config.limit if pagin_config else None - if limit is None: - limit = 10 - room_members = [ m for m in current_state.values() @@ -467,7 +448,7 @@ async def get_receipts() -> List[JsonDict]: run_in_background( self.store.get_recent_events_for_room, room_id, - limit=limit, + limit=pagin_config.limit, end_token=now_token.room_key, ), ), diff --git a/synapse/handlers/pagination.py b/synapse/handlers/pagination.py index 1f83bab836e6..a4ca9cb8b4cb 100644 --- a/synapse/handlers/pagination.py +++ b/synapse/handlers/pagination.py @@ -458,11 +458,6 @@ async def get_messages( # `/messages` should still works with live tokens when manually provided. assert from_token.room_key.topological is not None - if pagin_config.limit is None: - # This shouldn't happen as we've set a default limit before this - # gets called. - raise Exception("limit not set") - room_token = from_token.room_key async with self.pagination_lock.read(room_id): diff --git a/synapse/handlers/presence.py b/synapse/handlers/presence.py index 4e575ffbaa8d..2670e561d72c 100644 --- a/synapse/handlers/presence.py +++ b/synapse/handlers/presence.py @@ -1596,7 +1596,9 @@ async def get_new_events( self, user: UserID, from_key: Optional[int], - limit: Optional[int] = None, + # Having a default limit doesn't match the EventSource API, but some + # callers do not provide it. It is unused in this class. + limit: int = 0, room_ids: Optional[Collection[str]] = None, is_guest: bool = False, explicit_room_id: Optional[str] = None, diff --git a/synapse/handlers/receipts.py b/synapse/handlers/receipts.py index 4a7ec9e42670..ac015824423f 100644 --- a/synapse/handlers/receipts.py +++ b/synapse/handlers/receipts.py @@ -257,7 +257,7 @@ async def get_new_events( self, user: UserID, from_key: int, - limit: Optional[int], + limit: int, room_ids: Iterable[str], is_guest: bool, explicit_room_id: Optional[str] = None, diff --git a/synapse/handlers/relations.py b/synapse/handlers/relations.py index 1fdd7a10bce0..0a0c6d938e12 100644 --- a/synapse/handlers/relations.py +++ b/synapse/handlers/relations.py @@ -116,9 +116,6 @@ async def get_relations( if event is None: raise SynapseError(404, "Unknown parent event.") - # TODO Update pagination config to not allow None limits. - assert pagin_config.limit is not None - # Note that ignored users are not passed into get_relations_for_event # below. Ignored users are handled in filter_events_for_client (and by # not passing them in here we should get a better cache hit rate). diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py index 57ab05ad25d9..4e1aacb40866 100644 --- a/synapse/handlers/room.py +++ b/synapse/handlers/room.py @@ -1646,7 +1646,7 @@ async def get_new_events( self, user: UserID, from_key: RoomStreamToken, - limit: Optional[int], + limit: int, room_ids: Collection[str], is_guest: bool, explicit_room_id: Optional[str] = None, diff --git a/synapse/handlers/typing.py b/synapse/handlers/typing.py index f95369166985..a0ea71943053 100644 --- a/synapse/handlers/typing.py +++ b/synapse/handlers/typing.py @@ -513,7 +513,7 @@ async def get_new_events( self, user: UserID, from_key: int, - limit: Optional[int], + limit: int, room_ids: Iterable[str], is_guest: bool, explicit_room_id: Optional[str] = None, diff --git a/synapse/rest/client/events.py b/synapse/rest/client/events.py index 916f5230f1b1..782e7d14e867 100644 --- a/synapse/rest/client/events.py +++ b/synapse/rest/client/events.py @@ -50,7 +50,9 @@ async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]: raise SynapseError(400, "Guest users must specify room_id param") room_id = parse_string(request, "room_id") - pagin_config = await PaginationConfig.from_request(self.store, request) + pagin_config = await PaginationConfig.from_request( + self.store, request, default_limit=10 + ) timeout = EventStreamRestServlet.DEFAULT_LONGPOLL_TIME_MS if b"timeout" in args: try: diff --git a/synapse/rest/client/initial_sync.py b/synapse/rest/client/initial_sync.py index cfadcb8e50f5..9b1bb8b52124 100644 --- a/synapse/rest/client/initial_sync.py +++ b/synapse/rest/client/initial_sync.py @@ -39,7 +39,9 @@ async def on_GET(self, request: SynapseRequest) -> Tuple[int, JsonDict]: requester = await self.auth.get_user_by_req(request) args: Dict[bytes, List[bytes]] = request.args # type: ignore as_client_event = b"raw" not in args - pagination_config = await PaginationConfig.from_request(self.store, request) + pagination_config = await PaginationConfig.from_request( + self.store, request, default_limit=10 + ) include_archived = parse_boolean(request, "archived", default=False) content = await self.initial_sync_handler.snapshot_all_rooms( user_id=requester.user.to_string(), diff --git a/synapse/rest/client/room.py b/synapse/rest/client/room.py index b6dedbed041c..01e507996339 100644 --- a/synapse/rest/client/room.py +++ b/synapse/rest/client/room.py @@ -729,7 +729,9 @@ async def on_GET( self, request: SynapseRequest, room_id: str ) -> Tuple[int, JsonDict]: requester = await self.auth.get_user_by_req(request, allow_guest=True) - pagination_config = await PaginationConfig.from_request(self.store, request) + pagination_config = await PaginationConfig.from_request( + self.store, request, default_limit=10 + ) content = await self.initial_sync_handler.room_initial_sync( room_id=room_id, requester=requester, pagin_config=pagination_config ) diff --git a/synapse/storage/databases/main/stream.py b/synapse/storage/databases/main/stream.py index ffeb2b368381..5baffbfe55e1 100644 --- a/synapse/storage/databases/main/stream.py +++ b/synapse/storage/databases/main/stream.py @@ -1200,8 +1200,6 @@ def _paginate_room_events_txn( `to_token`), or `limit` is zero. """ - assert int(limit) >= 0 - # Tokens really represent positions between elements, but we use # the convention of pointing to the event before the gap. Hence # we have a bit of asymmetry when it comes to equalities. diff --git a/synapse/streams/__init__.py b/synapse/streams/__init__.py index 806b67130530..2dcd43d0a2f5 100644 --- a/synapse/streams/__init__.py +++ b/synapse/streams/__init__.py @@ -27,7 +27,7 @@ async def get_new_events( self, user: UserID, from_key: K, - limit: Optional[int], + limit: int, room_ids: Collection[str], is_guest: bool, explicit_room_id: Optional[str] = None, diff --git a/synapse/streams/config.py b/synapse/streams/config.py index f6f7bf3d8b41..6df2de919cda 100644 --- a/synapse/streams/config.py +++ b/synapse/streams/config.py @@ -35,14 +35,14 @@ class PaginationConfig: from_token: Optional[StreamToken] to_token: Optional[StreamToken] direction: str - limit: Optional[int] + limit: int @classmethod async def from_request( cls, store: "DataStore", request: SynapseRequest, - default_limit: Optional[int] = None, + default_limit: int, default_dir: str = "f", ) -> "PaginationConfig": direction = parse_string( @@ -69,12 +69,10 @@ async def from_request( raise SynapseError(400, "'to' parameter is invalid") limit = parse_integer(request, "limit", default=default_limit) + if limit < 0: + raise SynapseError(400, "Limit must be 0 or above") - if limit: - if limit < 0: - raise SynapseError(400, "Limit must be 0 or above") - - limit = min(int(limit), MAX_LIMIT) + limit = min(limit, MAX_LIMIT) try: return PaginationConfig(from_tok, to_tok, direction, limit) diff --git a/tests/rest/client/test_typing.py b/tests/rest/client/test_typing.py index 61b66d768592..fdc433a8b513 100644 --- a/tests/rest/client/test_typing.py +++ b/tests/rest/client/test_typing.py @@ -59,7 +59,8 @@ def test_set_typing(self) -> None: self.event_source.get_new_events( user=UserID.from_string(self.user_id), from_key=0, - limit=None, + # Limit is unused. + limit=0, room_ids=[self.room_id], is_guest=False, )