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Support spaces with > 50 rooms in the /hierarchy endpoint. (#11695)

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By returning all of the m.space.child state of the space, not just
the first 50. The number of rooms returned is still capped at 50.

For the federation API this implies that the requesting server will
need to individually query for any other rooms it is not joined to.
This commit is contained in:
Patrick Cloke 2022-01-07 19:27:58 -05:00 • committed by GitHub
parent d3cf0730f8
commit 8e57584a58
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3 changed files with 55 additions and 8 deletions
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30
synapse/handlers/room_summary.py
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@ -153,6 +153,9 @@ class RoomSummaryHandler:
rooms_result: List[JsonDict] = []
events_result: List[JsonDict] = []
if max_rooms_per_space is None or max_rooms_per_space > MAX_ROOMS_PER_SPACE:
max_rooms_per_space = MAX_ROOMS_PER_SPACE
while room_queue and len(rooms_result) < MAX_ROOMS:
queue_entry = room_queue.popleft()
room_id = queue_entry.room_id
@ -167,7 +170,7 @@ class RoomSummaryHandler:
# The client-specified max_rooms_per_space limit doesn't apply to the
# room_id specified in the request, so we ignore it if this is the
# first room we are processing.
max_children = max_rooms_per_space if processed_rooms else None
max_children = max_rooms_per_space if processed_rooms else MAX_ROOMS
if is_in_room:
room_entry = await self._summarize_local_room(
@ -395,7 +398,7 @@ class RoomSummaryHandler:
None,
room_id,
suggested_only,
# TODO Handle max children.
# Do not limit the maximum children.
max_children=None,
)
@ -525,6 +528,10 @@ class RoomSummaryHandler:
rooms_result: List[JsonDict] = []
events_result: List[JsonDict] = []
# Set a limit on the number of rooms to return.
if max_rooms_per_space is None or max_rooms_per_space > MAX_ROOMS_PER_SPACE:
max_rooms_per_space = MAX_ROOMS_PER_SPACE
while room_queue and len(rooms_result) < MAX_ROOMS:
room_id = room_queue.popleft()
if room_id in processed_rooms:
@ -583,7 +590,9 @@ class RoomSummaryHandler:
# Iterate through each child and potentially add it, but not its children,
# to the response.
for child_room in root_room_entry.children_state_events:
for child_room in itertools.islice(
root_room_entry.children_state_events, MAX_ROOMS_PER_SPACE
):
room_id = child_room.get("state_key")
assert isinstance(room_id, str)
# If the room is unknown, skip it.
@ -633,8 +642,8 @@ class RoomSummaryHandler:
suggested_only: True if only suggested children should be returned.
Otherwise, all children are returned.
max_children:
The maximum number of children rooms to include. This is capped
to a server-set limit.
The maximum number of children rooms to include. A value of None
means no limit.
Returns:
A room entry if the room should be returned. None, otherwise.
@ -656,8 +665,13 @@ class RoomSummaryHandler:
# we only care about suggested children
child_events = filter(_is_suggested_child_event, child_events)
if max_children is None or max_children > MAX_ROOMS_PER_SPACE:
max_children = MAX_ROOMS_PER_SPACE
# TODO max_children is legacy code for the /spaces endpoint.
if max_children is not None:
child_iter: Iterable[EventBase] = itertools.islice(
child_events, max_children
)
else:
child_iter = child_events
stripped_events: List[JsonDict] = [
{
@ -668,7 +682,7 @@ class RoomSummaryHandler:
"sender": e.sender,
"origin_server_ts": e.origin_server_ts,
}
for e in itertools.islice(child_events, max_children)
for e in child_iter
]
return _RoomEntry(room_id, room_entry, stripped_events)