de-MSC-ifying space summaries (MSC2946) (#3134)helm-dendrite-0.13.1

- This PR moves and refactors the
[code](https://github.com/matrix-org/dendrite/blob/main/setup/mscs/msc2946/msc2946.go)
for
[MSC2946](https://github.com/matrix-org/matrix-spec-proposals/pull/2946)
('Space Summaries') to integrate it into the rest of the codebase.
- Means space summaries are no longer hidden behind an MSC flag
- Solves #3096

Signed-off-by: Sam Wedgwood <sam@wedgwood.dev>

1 files changed, 8 insertions, 7 deletions

diff --git a/internal/caching/cache_space_rooms.go b/internal/caching/cache_space_rooms.go
index 100ab902..90eeb786 100644
--- a/internal/caching/cache_space_rooms.go
+++ b/internal/caching/cache_space_rooms.go
@@ -2,15 +2,16 @@ package caching
 
 import "github.com/matrix-org/gomatrixserverlib/fclient"
 
-type SpaceSummaryRoomsCache interface {
-	GetSpaceSummary(roomID string) (r fclient.MSC2946SpacesResponse, ok bool)
-	StoreSpaceSummary(roomID string, r fclient.MSC2946SpacesResponse)
+// RoomHierarchy cache caches responses to federated room hierarchy requests (A.K.A. 'space summaries')
+type RoomHierarchyCache interface {
+	GetRoomHierarchy(roomID string) (r fclient.RoomHierarchyResponse, ok bool)
+	StoreRoomHierarchy(roomID string, r fclient.RoomHierarchyResponse)
 }
 
-func (c Caches) GetSpaceSummary(roomID string) (r fclient.MSC2946SpacesResponse, ok bool) {
-	return c.SpaceSummaryRooms.Get(roomID)
+func (c Caches) GetRoomHierarchy(roomID string) (r fclient.RoomHierarchyResponse, ok bool) {
+	return c.RoomHierarchies.Get(roomID)
 }
 
-func (c Caches) StoreSpaceSummary(roomID string, r fclient.MSC2946SpacesResponse) {
-	c.SpaceSummaryRooms.Set(roomID, r)
+func (c Caches) StoreRoomHierarchy(roomID string, r fclient.RoomHierarchyResponse) {
+	c.RoomHierarchies.Set(roomID, r)
 }