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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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syncapi/storage/tables/interface.go
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@ -87,6 +87,8 @@ type Topology interface {
SelectMaxPositionInTopology(ctx context.Context, txn *sql.Tx, roomID string) (depth types.StreamPosition, spos types.StreamPosition, err error)
// DeleteTopologyForRoom removes all topological information for a room. This should only be done when removing the room entirely.
DeleteTopologyForRoom(ctx context.Context, txn *sql.Tx, roomID string) (err error)
// SelectStreamToTopologicalPosition converts a stream position to a topological position by finding the nearest topological position in the room.
SelectStreamToTopologicalPosition(ctx context.Context, txn *sql.Tx, roomID string, streamPos types.StreamPosition, forward bool) (topoPos types.StreamPosition, err error)
}
type CurrentRoomState interface {