Add ASN info lookup and periodic routing table statistics

- Add handle and description columns to asns table
- Look up ASN info using asinfo package when creating new ASNs
- Remove noisy debug logging for individual route updates
- Add IPv4/IPv6 route counters and update rate tracking
- Log routing table statistics every 15 seconds with IPv4/IPv6 breakdown
- Track updates per second for both IPv4 and IPv6 routes separately

internal/database/database.go

@@ -11,6 +11,7 @@ import (
 	"runtime"
 	"time"
 
+	"git.eeqj.de/sneak/routewatch/pkg/asinfo"
 	"github.com/google/uuid"
 	_ "github.com/mattn/go-sqlite3" // CGO SQLite driver
 )
@@ -174,12 +175,15 @@ func (d *Database) GetOrCreateASN(number int, timestamp time.Time) (*ASN, error)
 
 	var asn ASN
 	var idStr string
-	err = tx.QueryRow("SELECT id, number, first_seen, last_seen FROM asns WHERE number = ?", number).
-		Scan(&idStr, &asn.Number, &asn.FirstSeen, &asn.LastSeen)
+	var handle, description sql.NullString
+	err = tx.QueryRow("SELECT id, number, handle, description, first_seen, last_seen FROM asns WHERE number = ?", number).
+		Scan(&idStr, &asn.Number, &handle, &description, &asn.FirstSeen, &asn.LastSeen)
 
 	if err == nil {
 		// ASN exists, update last_seen
 		asn.ID, _ = uuid.Parse(idStr)
+		asn.Handle = handle.String
+		asn.Description = description.String
 		_, err = tx.Exec("UPDATE asns SET last_seen = ? WHERE id = ?", timestamp, asn.ID.String())
 		if err != nil {
 			return nil, err
@@ -199,15 +203,22 @@ func (d *Database) GetOrCreateASN(number int, timestamp time.Time) (*ASN, error)
 		return nil, err
 	}
 
-	// ASN doesn't exist, create it
+	// ASN doesn't exist, create it with ASN info lookup
 	asn = ASN{
 		ID:        generateUUID(),
 		Number:    number,
 		FirstSeen: timestamp,
 		LastSeen:  timestamp,
 	}
-	_, err = tx.Exec("INSERT INTO asns (id, number, first_seen, last_seen) VALUES (?, ?, ?, ?)",
-		asn.ID.String(), asn.Number, asn.FirstSeen, asn.LastSeen)
+
+	// Look up ASN info
+	if info, ok := asinfo.Get(number); ok {
+		asn.Handle = info.Handle
+		asn.Description = info.Description
+	}
+
+	_, err = tx.Exec("INSERT INTO asns (id, number, handle, description, first_seen, last_seen) VALUES (?, ?, ?, ?, ?, ?)",
+		asn.ID.String(), asn.Number, asn.Handle, asn.Description, asn.FirstSeen, asn.LastSeen)
 	if err != nil {
 		return nil, err
 	}

internal/database/models.go

@@ -8,10 +8,12 @@ import (
 
 // ASN represents an Autonomous System Number
 type ASN struct {
-	ID        uuid.UUID `json:"id"`
-	Number    int       `json:"number"`
-	FirstSeen time.Time `json:"first_seen"`
-	LastSeen  time.Time `json:"last_seen"`
+	ID          uuid.UUID `json:"id"`
+	Number      int       `json:"number"`
+	Handle      string    `json:"handle"`
+	Description string    `json:"description"`
+	FirstSeen   time.Time `json:"first_seen"`
+	LastSeen    time.Time `json:"last_seen"`
 }
 
 // Prefix represents an IP prefix (CIDR block)

internal/database/schema.sql

@@ -1,6 +1,8 @@
 CREATE TABLE IF NOT EXISTS asns (
 	id TEXT PRIMARY KEY,
 	number INTEGER UNIQUE NOT NULL,
+	handle TEXT,
+	description TEXT,
 	first_seen DATETIME NOT NULL,
 	last_seen DATETIME NOT NULL
 );

internal/routewatch/app.go

@@ -4,6 +4,7 @@ package routewatch
 
 import (
 	"context"
+	"fmt"
 	"log/slog"
 	"os"
 	"strings"
@@ -23,6 +24,11 @@ type Config struct {
 	MaxRuntime time.Duration // Maximum runtime (0 = run forever)
 }
 
+const (
+	// routingTableStatsInterval is how often we log routing table statistics
+	routingTableStatsInterval = 15 * time.Second
+)
+
 // NewConfig provides default configuration
 func NewConfig() Config {
 	return Config{
@@ -88,6 +94,9 @@ func (rw *RouteWatch) Run(ctx context.Context) error {
 	peerHandler := NewPeerHandler(rw.db, rw.logger)
 	rw.streamer.RegisterHandler(peerHandler)
 
+	// Start periodic routing table stats logging
+	go rw.logRoutingTableStats(ctx)
+
 	// Start streaming
 	if err := rw.streamer.Start(); err != nil {
 		return err
@@ -125,6 +134,32 @@ func (rw *RouteWatch) Run(ctx context.Context) error {
 	return nil
 }
 
+// logRoutingTableStats periodically logs routing table statistics
+func (rw *RouteWatch) logRoutingTableStats(ctx context.Context) {
+	// Log stats periodically
+	ticker := time.NewTicker(routingTableStatsInterval)
+	defer ticker.Stop()
+
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		case <-ticker.C:
+			stats := rw.routingTable.GetDetailedStats()
+			rw.logger.Info("Routing table statistics",
+				"ipv4_routes", stats.IPv4Routes,
+				"ipv6_routes", stats.IPv6Routes,
+				"ipv4_updates_per_sec", fmt.Sprintf("%.2f", stats.IPv4UpdatesRate),
+				"ipv6_updates_per_sec", fmt.Sprintf("%.2f", stats.IPv6UpdatesRate),
+				"total_routes", stats.TotalRoutes,
+				"unique_prefixes", stats.UniquePrefixes,
+				"unique_origins", stats.UniqueOrigins,
+				"unique_peers", stats.UniquePeers,
+			)
+		}
+	}
+}
+
 // NewLogger creates a structured logger
 func NewLogger() *slog.Logger {
 	level := slog.LevelInfo

internal/routewatch/routingtablehandler.go

@@ -70,13 +70,6 @@ func (h *RoutingTableHandler) HandleMessage(msg *ristypes.RISMessage) {
 
 			// Add route to routing table
 			h.rt.AddRoute(route)
-
-			h.logger.Debug("Added route to routing table",
-				"prefix", prefix,
-				"origin_asn", originASN,
-				"peer_asn", peerASN,
-				"path", msg.Path,
-			)
 		}
 	}
 
@@ -86,13 +79,7 @@ func (h *RoutingTableHandler) HandleMessage(msg *ristypes.RISMessage) {
 		prefixID := uuid.NewSHA1(uuid.NameSpaceURL, []byte(prefix))
 
 		// Withdraw all routes for this prefix from this peer
-		count := h.rt.WithdrawRoutesByPrefixAndPeer(prefixID, peerASN)
-
-		h.logger.Debug("Withdrew routes from routing table",
-			"prefix", prefix,
-			"peer_asn", peerASN,
-			"routes_removed", count,
-		)
+		h.rt.WithdrawRoutesByPrefixAndPeer(prefixID, peerASN)
 	}
 }
 

internal/routingtable/routingtable.go

@@ -3,7 +3,9 @@ package routingtable
 
 import (
 	"fmt"
+	"strings"
 	"sync"
+	"sync/atomic"
 	"time"
 
 	"github.com/google/uuid"
@@ -37,15 +39,23 @@ type RoutingTable struct {
 	byPrefix    map[uuid.UUID]map[RouteKey]*Route // Routes indexed by prefix ID
 	byOriginASN map[uuid.UUID]map[RouteKey]*Route // Routes indexed by origin ASN ID
 	byPeerASN   map[int]map[RouteKey]*Route       // Routes indexed by peer ASN
+
+	// Metrics tracking
+	ipv4Routes       int
+	ipv6Routes       int
+	ipv4Updates      uint64 // Updates counter for rate calculation
+	ipv6Updates      uint64 // Updates counter for rate calculation
+	lastMetricsReset time.Time
 }
 
 // New creates a new empty routing table
 func New() *RoutingTable {
 	return &RoutingTable{
-		routes:      make(map[RouteKey]*Route),
-		byPrefix:    make(map[uuid.UUID]map[RouteKey]*Route),
-		byOriginASN: make(map[uuid.UUID]map[RouteKey]*Route),
-		byPeerASN:   make(map[int]map[RouteKey]*Route),
+		routes:           make(map[RouteKey]*Route),
+		byPrefix:         make(map[uuid.UUID]map[RouteKey]*Route),
+		byOriginASN:      make(map[uuid.UUID]map[RouteKey]*Route),
+		byPeerASN:        make(map[int]map[RouteKey]*Route),
+		lastMetricsReset: time.Now(),
 	}
 }
 
@@ -63,6 +73,12 @@ func (rt *RoutingTable) AddRoute(route *Route) {
 	// If route already exists, remove it from indexes first
 	if existingRoute, exists := rt.routes[key]; exists {
 		rt.removeFromIndexes(key, existingRoute)
+		// Decrement counter for existing route
+		if isIPv6(existingRoute.Prefix) {
+			rt.ipv6Routes--
+		} else {
+			rt.ipv4Routes--
+		}
 	}
 
 	// Add to main map
@@ -70,6 +86,15 @@ func (rt *RoutingTable) AddRoute(route *Route) {
 
 	// Update indexes
 	rt.addToIndexes(key, route)
+
+	// Update metrics
+	if isIPv6(route.Prefix) {
+		rt.ipv6Routes++
+		atomic.AddUint64(&rt.ipv6Updates, 1)
+	} else {
+		rt.ipv4Routes++
+		atomic.AddUint64(&rt.ipv4Updates, 1)
+	}
 }
 
 // RemoveRoute removes a route from the routing table
@@ -94,6 +119,15 @@ func (rt *RoutingTable) RemoveRoute(prefixID, originASNID uuid.UUID, peerASN int
 	// Remove from main map
 	delete(rt.routes, key)
 
+	// Update metrics
+	if isIPv6(route.Prefix) {
+		rt.ipv6Routes--
+		atomic.AddUint64(&rt.ipv6Updates, 1)
+	} else {
+		rt.ipv4Routes--
+		atomic.AddUint64(&rt.ipv4Updates, 1)
+	}
+
 	return true
 }
 
@@ -102,25 +136,38 @@ func (rt *RoutingTable) WithdrawRoutesByPrefixAndPeer(prefixID uuid.UUID, peerAS
 	rt.mu.Lock()
 	defer rt.mu.Unlock()
 
-	count := 0
+	prefixRoutes, exists := rt.byPrefix[prefixID]
+	if !exists {
+		return 0
+	}
 
-	// Find all routes for this prefix
-	if prefixRoutes, exists := rt.byPrefix[prefixID]; exists {
-		// Collect keys to delete (can't delete while iterating)
-		var keysToDelete []RouteKey
-		for key, route := range prefixRoutes {
-			if route.PeerASN == peerASN {
-				keysToDelete = append(keysToDelete, key)
-			}
+	// Collect keys to delete (can't delete while iterating)
+	var keysToDelete []RouteKey
+	for key, route := range prefixRoutes {
+		if route.PeerASN == peerASN {
+			keysToDelete = append(keysToDelete, key)
+		}
+	}
+
+	// Delete the routes
+	count := 0
+	for _, key := range keysToDelete {
+		route, exists := rt.routes[key]
+		if !exists {
+			continue
 		}
 
-		// Delete the routes
-		for _, key := range keysToDelete {
-			if route, exists := rt.routes[key]; exists {
-				rt.removeFromIndexes(key, route)
-				delete(rt.routes, key)
-				count++
-			}
+		rt.removeFromIndexes(key, route)
+		delete(rt.routes, key)
+		count++
+
+		// Update metrics
+		if isIPv6(route.Prefix) {
+			rt.ipv6Routes--
+			atomic.AddUint64(&rt.ipv6Updates, 1)
+		} else {
+			rt.ipv4Routes--
+			atomic.AddUint64(&rt.ipv4Updates, 1)
 		}
 	}
 
@@ -234,6 +281,47 @@ func (rt *RoutingTable) Stats() map[string]int {
 	return stats
 }
 
+// DetailedStats contains detailed routing table statistics
+type DetailedStats struct {
+	IPv4Routes      int
+	IPv6Routes      int
+	IPv4UpdatesRate float64
+	IPv6UpdatesRate float64
+	TotalRoutes     int
+	UniquePrefixes  int
+	UniqueOrigins   int
+	UniquePeers     int
+}
+
+// GetDetailedStats returns detailed statistics including IPv4/IPv6 breakdown and update rates
+func (rt *RoutingTable) GetDetailedStats() DetailedStats {
+	rt.mu.Lock()
+	defer rt.mu.Unlock()
+
+	// Calculate update rates
+	elapsed := time.Since(rt.lastMetricsReset).Seconds()
+	ipv4Updates := atomic.LoadUint64(&rt.ipv4Updates)
+	ipv6Updates := atomic.LoadUint64(&rt.ipv6Updates)
+
+	stats := DetailedStats{
+		IPv4Routes:      rt.ipv4Routes,
+		IPv6Routes:      rt.ipv6Routes,
+		IPv4UpdatesRate: float64(ipv4Updates) / elapsed,
+		IPv6UpdatesRate: float64(ipv6Updates) / elapsed,
+		TotalRoutes:     len(rt.routes),
+		UniquePrefixes:  len(rt.byPrefix),
+		UniqueOrigins:   len(rt.byOriginASN),
+		UniquePeers:     len(rt.byPeerASN),
+	}
+
+	// Reset counters for next period
+	atomic.StoreUint64(&rt.ipv4Updates, 0)
+	atomic.StoreUint64(&rt.ipv6Updates, 0)
+	rt.lastMetricsReset = time.Now()
+
+	return stats
+}
+
 // Clear removes all routes from the routing table
 func (rt *RoutingTable) Clear() {
 	rt.mu.Lock()
@@ -243,6 +331,11 @@ func (rt *RoutingTable) Clear() {
 	rt.byPrefix = make(map[uuid.UUID]map[RouteKey]*Route)
 	rt.byOriginASN = make(map[uuid.UUID]map[RouteKey]*Route)
 	rt.byPeerASN = make(map[int]map[RouteKey]*Route)
+	rt.ipv4Routes = 0
+	rt.ipv6Routes = 0
+	atomic.StoreUint64(&rt.ipv4Updates, 0)
+	atomic.StoreUint64(&rt.ipv6Updates, 0)
+	rt.lastMetricsReset = time.Now()
 }
 
 // Helper methods for index management
@@ -297,3 +390,8 @@ func (rt *RoutingTable) removeFromIndexes(key RouteKey, route *Route) {
 func (k RouteKey) String() string {
 	return fmt.Sprintf("%s/%s/%d", k.PrefixID, k.OriginASNID, k.PeerASN)
 }
+
+// isIPv6 returns true if the prefix is an IPv6 address
+func isIPv6(prefix string) bool {
+	return strings.Contains(prefix, ":")
+}