graph/db: thread context through FetchNodeFeatures

diff --git a/graph/db/graph.go b/graph/db/graph.go
index 283f7d5..ba63941 100644
--- a/graph/db/graph.go
+++ b/graph/db/graph.go
@@ -236,14 +236,14 @@ func (c *ChannelGraph) ForEachNodeDirectedChannel(node route.Vertex,
 // features instead of the database.
 //
 // NOTE: this is part of the graphdb.NodeTraverser interface.
-func (c *ChannelGraph) FetchNodeFeatures(node route.Vertex) (
-	*lnwire.FeatureVector, error) {
+func (c *ChannelGraph) FetchNodeFeatures(ctx context.Context,
+	node route.Vertex) (*lnwire.FeatureVector, error) {
 
 	if c.graphCache != nil {
 		return c.graphCache.GetFeatures(node), nil
 	}
 
-	return c.db.FetchNodeFeatures(lnwire.GossipVersion1, node)
+	return c.db.FetchNodeFeatures(ctx, lnwire.GossipVersion1, node)
 }
 
 // GraphSession will provide the call-back with access to a NodeTraverser
diff --git a/graph/db/graph_test.go b/graph/db/graph_test.go
index aa0e02b..051f59a 100644
--- a/graph/db/graph_test.go
+++ b/graph/db/graph_test.go
@@ -298,13 +298,13 @@ func testNodeInsertionAndDeletion(t *testing.T, v lnwire.GossipVersion) {
 
 	// Check that the node's features are fetched correctly. This check
 	// will use the graph cache to fetch the features.
-	features, err := graph.FetchNodeFeatures(node.PubKeyBytes)
+	features, err := graph.FetchNodeFeatures(ctx, node.PubKeyBytes)
 	require.NoError(t, err)
 	require.Equal(t, testFeatures, features)
 
 	// Check that the node's features are fetched correctly. This check
 	// will check the database directly.
-	features, err = graph.FetchNodeFeatures(node.PubKeyBytes)
+	features, err = graph.FetchNodeFeatures(ctx, node.PubKeyBytes)
 	require.NoError(t, err)
 	require.Equal(t, testFeatures, features)
 
diff --git a/graph/db/interfaces.go b/graph/db/interfaces.go
index 4466440..9daabb0 100644
--- a/graph/db/interfaces.go
+++ b/graph/db/interfaces.go
@@ -25,7 +25,8 @@ type NodeTraverser interface {
 		cb func(channel *DirectedChannel) error, reset func()) error
 
 	// FetchNodeFeatures returns the features of the given node.
-	FetchNodeFeatures(nodePub route.Vertex) (*lnwire.FeatureVector, error)
+	FetchNodeFeatures(ctx context.Context,
+		nodePub route.Vertex) (*lnwire.FeatureVector, error)
 }
 
 // Store represents the main interface for the channel graph database for all
@@ -37,7 +38,7 @@ type Store interface { //nolint:interfacebloat
 		cb func(channel *DirectedChannel) error, reset func()) error
 
 	// FetchNodeFeatures returns the features of the given node.
-	FetchNodeFeatures(v lnwire.GossipVersion,
+	FetchNodeFeatures(ctx context.Context, v lnwire.GossipVersion,
 		nodePub route.Vertex) (*lnwire.FeatureVector, error)
 
 	// AddNode adds a vertex/node to the graph database. If the
diff --git a/graph/db/kv_store.go b/graph/db/kv_store.go
index de9ff40..67cebc2 100644
--- a/graph/db/kv_store.go
+++ b/graph/db/kv_store.go
@@ -684,7 +684,7 @@ func (c *KVStore) ForEachNodeDirectedChannel(v lnwire.GossipVersion,
 // known for the node, an empty feature vector is returned.
 //
 // NOTE: this is part of the graphdb.NodeTraverser interface.
-func (c *KVStore) FetchNodeFeatures(v lnwire.GossipVersion,
+func (c *KVStore) FetchNodeFeatures(_ context.Context, v lnwire.GossipVersion,
 	nodePub route.Vertex) (*lnwire.FeatureVector, error) {
 
 	if v != lnwire.GossipVersion1 {
@@ -4511,7 +4511,8 @@ func (c *nodeTraverserSession) ForEachNodeDirectedChannel(
 // unknown, assume no additional features are supported.
 //
 // NOTE: Part of the NodeTraverser interface.
-func (c *nodeTraverserSession) FetchNodeFeatures(nodePub route.Vertex) (
+func (c *nodeTraverserSession) FetchNodeFeatures(_ context.Context,
+	nodePub route.Vertex) (
 	*lnwire.FeatureVector, error) {
 
 	return c.db.fetchNodeFeatures(c.tx, nodePub)
diff --git a/graph/db/sql_store.go b/graph/db/sql_store.go
index a04a70a..cc058c8 100644
--- a/graph/db/sql_store.go
+++ b/graph/db/sql_store.go
@@ -447,10 +447,9 @@ func (s *SQLStore) DeleteNode(ctx context.Context, v lnwire.GossipVersion,
 // known for the node, an empty feature vector is returned.
 //
 // NOTE: this is part of the graphdb.NodeTraverser interface.
-func (s *SQLStore) FetchNodeFeatures(v lnwire.GossipVersion,
-	nodePub route.Vertex) (*lnwire.FeatureVector, error) {
-
-	ctx := context.TODO()
+func (s *SQLStore) FetchNodeFeatures(ctx context.Context,
+	v lnwire.GossipVersion, nodePub route.Vertex) (*lnwire.FeatureVector,
+	error) {
 
 	return fetchNodeFeatures(ctx, s.db, v, nodePub)
 }
@@ -3391,11 +3390,10 @@ func (s *sqlNodeTraverser) ForEachNodeDirectedChannel(
 // unknown, assume no additional features are supported.
 //
 // NOTE: Part of the NodeTraverser interface.
-func (s *sqlNodeTraverser) FetchNodeFeatures(nodePub route.Vertex) (
+func (s *sqlNodeTraverser) FetchNodeFeatures(ctx context.Context,
+	nodePub route.Vertex) (
 	*lnwire.FeatureVector, error) {
 
-	ctx := context.TODO()
-
 	return fetchNodeFeatures(ctx, s.db, lnwire.GossipVersion1, nodePub)
 }
 
diff --git a/routing/graph.go b/routing/graph.go
index 4be34de..2cfaec0 100644
--- a/routing/graph.go
+++ b/routing/graph.go
@@ -1,6 +1,7 @@
 package routing
 
 import (
+	"context"
 	"fmt"
 
 	"github.com/btcsuite/btcd/btcutil"
@@ -19,7 +20,8 @@ type Graph interface {
 		reset func()) error
 
 	// FetchNodeFeatures returns the features of the given node.
-	FetchNodeFeatures(nodePub route.Vertex) (*lnwire.FeatureVector, error)
+	FetchNodeFeatures(ctx context.Context,
+		nodePub route.Vertex) (*lnwire.FeatureVector, error)
 }
 
 // GraphSessionFactory can be used to gain access to a graphdb.NodeTraverser
diff --git a/routing/mock_graph_test.go b/routing/mock_graph_test.go
index d9b16f6..b11bdf8 100644
--- a/routing/mock_graph_test.go
+++ b/routing/mock_graph_test.go
@@ -2,6 +2,7 @@ package routing
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"testing"
 
@@ -221,8 +222,8 @@ func (m *mockGraph) sourceNode() route.Vertex {
 // fetchNodeFeatures returns the features of the given node.
 //
 // NOTE: Part of the Graph interface.
-func (m *mockGraph) FetchNodeFeatures(nodePub route.Vertex) (
-	*lnwire.FeatureVector, error) {
+func (m *mockGraph) FetchNodeFeatures(_ context.Context,
+	_ route.Vertex) (*lnwire.FeatureVector, error) {
 
 	return lnwire.EmptyFeatureVector(), nil
 }
diff --git a/routing/pathfind.go b/routing/pathfind.go
index ddaade6..0f177c3 100644
--- a/routing/pathfind.go
+++ b/routing/pathfind.go
@@ -3,6 +3,7 @@ package routing
 import (
 	"bytes"
 	"container/heap"
+	"context"
 	"errors"
 	"fmt"
 	"math"
@@ -621,7 +622,9 @@ func findPath(g *graphParams, r *RestrictParams, cfg *PathFindingConfig,
 	features := r.DestFeatures
 	if features == nil {
 		var err error
-		features, err = g.graph.FetchNodeFeatures(target)
+		features, err = g.graph.FetchNodeFeatures(
+			context.TODO(), target,
+		)
 		if err != nil {
 			return nil, 0, err
 		}
@@ -1019,7 +1022,9 @@ func findPath(g *graphParams, r *RestrictParams, cfg *PathFindingConfig,
 		}
 
 		// Fetch node features fresh from the graph.
-		fromFeatures, err := g.graph.FetchNodeFeatures(node)
+		fromFeatures, err := g.graph.FetchNodeFeatures(
+			context.TODO(), node,
+		)
 		if err != nil {
 			return nil, err
 		}
@@ -1349,7 +1354,7 @@ func findBlindedPaths(g Graph, target route.Vertex,
 			return true, nil
 		}
 
-		features, err := g.FetchNodeFeatures(node)
+		features, err := g.FetchNodeFeatures(context.TODO(), node)
 		if err != nil {
 			return false, err
 		}