graph/db: let ForEachChannelCacheable take a reset param

graph/db/graph.go

@@ -182,7 +182,8 @@ func (c *ChannelGraph) populateCache(ctx context.Context) error {
 			c.graphCache.AddChannel(info, policy1, policy2)
 
 			return nil
-		})
+		}, func() {},
+	)
 	if err != nil {
 		return err
 	}

graph/db/interfaces.go

@@ -177,8 +177,8 @@ type V1Store interface { //nolint:interfacebloat
 	// NOTE: this method is like ForEachChannel but fetches only the data
 	// required for the graph cache.
 	ForEachChannelCacheable(cb func(*models.CachedEdgeInfo,
-		*models.CachedEdgePolicy,
-		*models.CachedEdgePolicy) error) error
+		*models.CachedEdgePolicy, *models.CachedEdgePolicy) error,
+		reset func()) error
 
 	// DisabledChannelIDs returns the channel ids of disabled channels.
 	// A channel is disabled when two of the associated ChanelEdgePolicies

graph/db/kv_store.go

@@ -486,9 +486,8 @@ func forEachChannel(db kvdb.Backend, cb func(*models.ChannelEdgeInfo,
 // NOTE: this method is like ForEachChannel but fetches only the data required
 // for the graph cache.
 func (c *KVStore) ForEachChannelCacheable(cb func(*models.CachedEdgeInfo,
-	*models.CachedEdgePolicy, *models.CachedEdgePolicy) error) error {
-
-	reset := func() {}
+	*models.CachedEdgePolicy, *models.CachedEdgePolicy) error,
+	reset func()) error {
 
 	return c.db.View(func(tx kvdb.RTx) error {
 		edges := tx.ReadBucket(edgeBucket)

graph/db/sql_store.go

@@ -1236,10 +1236,9 @@ func (s *SQLStore) ForEachNodeCached(ctx context.Context,
 // NOTE: this method is like ForEachChannel but fetches only the data
 // required for the graph cache.
 func (s *SQLStore) ForEachChannelCacheable(cb func(*models.CachedEdgeInfo,
-	*models.CachedEdgePolicy,
-	*models.CachedEdgePolicy) error) error {
+	*models.CachedEdgePolicy, *models.CachedEdgePolicy) error,
+	reset func()) error {
 
-	reset := func() {}
 	ctx := context.TODO()
 
 	handleChannel := func(db SQLQueries,