multi: pass reset to GraphSession

routing/graph.go

@@ -29,7 +29,8 @@ type GraphSessionFactory interface {
 	// GraphSession will provide the call-back with access to a
 	// graphdb.NodeTraverser instance which can be used to perform queries
 	// against the channel graph.
-	GraphSession(cb func(graph graphdb.NodeTraverser) error) error
+	GraphSession(cb func(graph graphdb.NodeTraverser) error,
+		reset func()) error
 }
 
 // FetchAmountPairCapacity determines the maximal public capacity between two

routing/mock_graph_test.go

@@ -232,8 +232,8 @@ func (m *mockGraph) FetchNodeFeatures(nodePub route.Vertex) (
 // the channel graph.
 //
 // NOTE: Part of the GraphSessionFactory interface.
-func (m *mockGraph) GraphSession(
-	cb func(graph graphdb.NodeTraverser) error) error {
+func (m *mockGraph) GraphSession(cb func(graph graphdb.NodeTraverser) error,
+	_ func()) error {
 
 	return cb(m)
 }

routing/pathfind_test.go

@@ -3303,6 +3303,8 @@ func dbFindPath(graph *graphdb.ChannelGraph,
 		)
 
 		return err
+	}, func() {
+		route = nil
 	})
 	if err != nil {
 		return nil, err

routing/payment_session.go

@@ -343,7 +343,11 @@ func (p *paymentSession) RequestRoute(maxAmt, feeLimit lnwire.MilliSatoshi,
 	}
 
 	for {
-		err := p.graphSessFactory.GraphSession(findPath)
+		err := p.graphSessFactory.GraphSession(
+			findPath, func() {
+				path = nil
+			},
+		)
 		// If there is an error, and it is not a path finding error, we
 		// return it immediately.
 		if err != nil && !lnutils.ErrorAs[*pathFindingError](err) {

routing/payment_session_test.go

@@ -259,8 +259,8 @@ func (g *sessionGraph) sourceNode() route.Vertex {
 	return route.Vertex{}
 }
 
-func (g *sessionGraph) GraphSession(
-	cb func(graph graphdb.NodeTraverser) error) error {
+func (g *sessionGraph) GraphSession(cb func(graph graphdb.NodeTraverser) error,
+	_ func()) error {
 
 	return cb(g)
 }