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Better mapping of stream positions to topological positions in /messages (#2263)

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* Convert stream positions into topological positions for both `from` and `to` in `/messages`

* Hopefully it works now

* Remove unnecessary logging

* Return sane values if `StreamToTopologicalPosition` can't work out the right thing to do

* Revert logging change

* tweaks

* Fix `selectEventIDsInRangeASCSQL`

* Test `Getting messages going forward is limited for a departed room (SPEC-216)` was passing incorrectly so un-whitelist it
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Neil Alexander 2022-03-18 10:40:01 +00:00 • committed by GitHub
parent 191486438c
commit 475d3c1af9
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7 changed files with 128 additions and 84 deletions
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4
syncapi/storage/interface.go
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@ -103,8 +103,6 @@ type Database interface {
// DeletePeek deletes all peeks for a given room by a given user
// Returns an error if there was a problem communicating with the database.
DeletePeeks(ctx context.Context, RoomID, UserID string) (types.StreamPosition, error)
// GetEventsInStreamingRange retrieves all of the events on a given ordering using the given extremities and limit.
GetEventsInStreamingRange(ctx context.Context, from, to *types.StreamingToken, roomID string, eventFilter *gomatrixserverlib.RoomEventFilter, backwardOrdering bool) (events []types.StreamEvent, err error)
// GetEventsInTopologicalRange retrieves all of the events on a given ordering using the given extremities and limit.
GetEventsInTopologicalRange(ctx context.Context, from, to *types.TopologyToken, roomID string, limit int, backwardOrdering bool) (events []types.StreamEvent, err error)
// EventPositionInTopology returns the depth and stream position of the given event.
@ -149,4 +147,6 @@ type Database interface {
SelectContextEvent(ctx context.Context, roomID, eventID string) (int, gomatrixserverlib.HeaderedEvent, error)
SelectContextBeforeEvent(ctx context.Context, id int, roomID string, filter *gomatrixserverlib.RoomEventFilter) ([]*gomatrixserverlib.HeaderedEvent, error)
SelectContextAfterEvent(ctx context.Context, id int, roomID string, filter *gomatrixserverlib.RoomEventFilter) (int, []*gomatrixserverlib.HeaderedEvent, error)
StreamToTopologicalPosition(ctx context.Context, roomID string, streamPos types.StreamPosition, backwardOrdering bool) (types.TopologyToken, error)
}