Method LoadStateAtSnapshotForStringTuples

roomserver/state/state.go:290–303

LoadStateAtSnapshotForStringTuples loads the state for a list of event type and state key pairs at a snapshot. This is used when we only want to load a subset of the room state at a snapshot. If there is no entry for a given event type and state key pair then it will be discarded. This is typically

(
	ctx context.Context,
	stateNID types.StateSnapshotNID,
	stateKeyTuples []gomatrixserverlib.StateKeyTuple,
)

// This is typically the state before an event or the current state of a room.
// Returns a sorted list of state entries or an error if there was a problem talking to the database.
func (v *StateResolution) LoadStateAtSnapshotForStringTuples(
	ctx context.Context,
	stateNID types.StateSnapshotNID,
	stateKeyTuples []gomatrixserverlib.StateKeyTuple,
) ([]types.StateEntry, error) {
	span, ctx := opentracing.StartSpanFromContext(ctx, "StateResolution.LoadStateAtSnapshotForStringTuples")
	defer span.Finish()

	numericTuples, err := v.stringTuplesToNumericTuples(ctx, stateKeyTuples)
	if err != nil {
		return nil, err
	}
	return v.loadStateAtSnapshotForNumericTuples(ctx, stateNID, numericTuples)
}

// stringTuplesToNumericTuples converts the string state key tuples into numeric IDs
// If there isn't a numeric ID for either the event type or the event state key then the tuple is discarded.