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Do not allow a None-limit on PaginationConfig. (#14146)

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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.
This commit is contained in:
Patrick Cloke 2022-10-14 08:30:05 -04:00 committed by GitHub
parent c7446906bd
commit 126a15794c
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16 changed files with 29 additions and 50 deletions
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1
changelog.d/14146.removal Normal file
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@ -0,0 +1 @@
Remove the unstable identifier for [MSC3715](https://github.com/matrix-org/matrix-doc/pull/3715).

2
synapse/handlers/account_data.py
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@ -225,7 +225,7 @@ class AccountDataEventSource(EventSource[int, JsonDict]):
self,
user: UserID,
from_key: int,
limit: Optional[int],
limit: int,
room_ids: Collection[str],
is_guest: bool,
explicit_room_id: Optional[str] = None,

27
synapse/handlers/initial_sync.py
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@ -57,13 +57,7 @@ class InitialSyncHandler:
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 @@ class InitialSyncHandler:
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 @@ class InitialSyncHandler:
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 @@ class InitialSyncHandler:
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 @@ class InitialSyncHandler:
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 @@ class InitialSyncHandler:
run_in_background(
self.store.get_recent_events_for_room,
room_id,
limit=limit,
limit=pagin_config.limit,
end_token=now_token.room_key,
),
),

5
synapse/handlers/pagination.py
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@ -458,11 +458,6 @@ class PaginationHandler:
# `/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):

4
synapse/handlers/presence.py
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@ -1596,7 +1596,9 @@ class PresenceEventSource(EventSource[int, UserPresenceState]):
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,

2
synapse/handlers/receipts.py
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@ -257,7 +257,7 @@ class ReceiptEventSource(EventSource[int, JsonDict]):
self,
user: UserID,
from_key: int,
limit: Optional[int],
limit: int,
room_ids: Iterable[str],
is_guest: bool,
explicit_room_id: Optional[str] = None,

3
synapse/handlers/relations.py
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@ -116,9 +116,6 @@ class RelationsHandler:
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).

2
synapse/handlers/room.py
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@ -1646,7 +1646,7 @@ class RoomEventSource(EventSource[RoomStreamToken, EventBase]):
self,
user: UserID,
from_key: RoomStreamToken,
limit: Optional[int],
limit: int,
room_ids: Collection[str],
is_guest: bool,
explicit_room_id: Optional[str] = None,

2
synapse/handlers/typing.py
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@ -513,7 +513,7 @@ class TypingNotificationEventSource(EventSource[int, JsonDict]):
self,
user: UserID,
from_key: int,
limit: Optional[int],
limit: int,
room_ids: Iterable[str],
is_guest: bool,
explicit_room_id: Optional[str] = None,

4
synapse/rest/client/events.py
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@ -50,7 +50,9 @@ class EventStreamRestServlet(RestServlet):
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:

4
synapse/rest/client/initial_sync.py
View File

@ -39,7 +39,9 @@ class InitialSyncRestServlet(RestServlet):
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(),

4
synapse/rest/client/room.py
View File

@ -729,7 +729,9 @@ class RoomInitialSyncRestServlet(RestServlet):
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
)

2
synapse/storage/databases/main/stream.py
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@ -1200,8 +1200,6 @@ class StreamWorkerStore(EventsWorkerStore, SQLBaseStore):
`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.

2
synapse/streams/__init__.py
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@ -27,7 +27,7 @@ class EventSource(Generic[K, R]):
self,
user: UserID,
from_key: K,
limit: Optional[int],
limit: int,
room_ids: Collection[str],
is_guest: bool,
explicit_room_id: Optional[str] = None,

12
synapse/streams/config.py
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@ -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 @@ class PaginationConfig:
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)

3
tests/rest/client/test_typing.py
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@ -59,7 +59,8 @@ class RoomTypingTestCase(unittest.HomeserverTestCase):
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,
)