graph: rename routerStats to builderStats

This logic used to be handled by the router. Update to reflect new
owner.

graph/builder.go

@@ -153,7 +153,7 @@ type Builder struct {
 
 	// stats tracks newly processed channels, updates, and node
 	// announcements over a window of defaultStatInterval.
-	stats *routerStats
+	stats *builderStats
 
 	quit chan struct{}
 	wg   sync.WaitGroup
@@ -171,7 +171,7 @@ func NewBuilder(cfg *Config) (*Builder, error) {
 		ntfnClientUpdates: make(chan *topologyClientUpdate),
 		channelEdgeMtx:    multimutex.NewMutex[uint64](),
 		statTicker:        ticker.New(defaultStatInterval),
-		stats:             new(routerStats),
+		stats:             new(builderStats),
 		quit:              make(chan struct{}),
 	}, nil
 }

graph/stats.go

@@ -6,9 +6,9 @@ import (
 	"time"
 )
 
-// routerStats is a struct that tracks various updates to the graph and
+// builderStats is a struct that tracks various updates to the graph and
 // facilitates aggregate logging of the statistics.
-type routerStats struct {
+type builderStats struct {
 	numChannels uint32
 	numUpdates  uint32
 	numNodes    uint32
@@ -18,28 +18,28 @@ type routerStats struct {
 }
 
 // incNumEdges increments the number of discovered edges.
-func (g *routerStats) incNumEdgesDiscovered() {
+func (g *builderStats) incNumEdgesDiscovered() {
 	g.mu.Lock()
 	g.numChannels++
 	g.mu.Unlock()
 }
 
 // incNumUpdates increments the number of channel updates processed.
-func (g *routerStats) incNumChannelUpdates() {
+func (g *builderStats) incNumChannelUpdates() {
 	g.mu.Lock()
 	g.numUpdates++
 	g.mu.Unlock()
 }
 
 // incNumNodeUpdates increments the number of node updates processed.
-func (g *routerStats) incNumNodeUpdates() {
+func (g *builderStats) incNumNodeUpdates() {
 	g.mu.Lock()
 	g.numNodes++
 	g.mu.Unlock()
 }
 
 // Empty returns true if all stats are zero.
-func (g *routerStats) Empty() bool {
+func (g *builderStats) Empty() bool {
 	g.mu.RLock()
 	isEmpty := g.numChannels == 0 &&
 		g.numUpdates == 0 &&
@@ -48,8 +48,8 @@ func (g *routerStats) Empty() bool {
 	return isEmpty
 }
 
-// Reset clears any router stats and sets the lastReset field to now.
-func (g *routerStats) Reset() {
+// Reset clears any stats and sets the lastReset field to now.
+func (g *builderStats) Reset() {
 	g.mu.Lock()
 	g.numChannels = 0
 	g.numUpdates = 0
@@ -58,8 +58,8 @@ func (g *routerStats) Reset() {
 	g.mu.Unlock()
 }
 
-// String returns a human-readable description of the router stats.
-func (g *routerStats) String() string {
+// String returns a human-readable description of the stats.
+func (g *builderStats) String() string {
 	g.mu.RLock()
 	str := fmt.Sprintf("Processed channels=%d updates=%d nodes=%d in "+
 		"last %v", g.numChannels, g.numUpdates, g.numNodes,