Split prefixes table into prefixes_v4 and prefixes_v6

- Create separate tables for IPv4 and IPv6 prefixes in schema.sql
- Update indexes for new prefix tables
- Update getOrCreatePrefix to use appropriate table based on IP version
- Update GetStatsContext to count prefixes from both tables
- Remove ip_version column since it's implicit in the table name

internal/database/database.go

@@ -549,15 +549,25 @@ func (d *Database) GetOrCreatePrefix(prefix string, timestamp time.Time) (*Prefi
 		}
 	}()
 
+	// Determine table based on IP version
+	ipVersion := detectIPVersion(prefix)
+	tableName := "prefixes_v4"
+	if ipVersion == ipVersionV6 {
+		tableName = "prefixes_v6"
+	}
+
 	var p Prefix
 	var idStr string
-	err = tx.QueryRow("SELECT id, prefix, ip_version, first_seen, last_seen FROM prefixes WHERE prefix = ?", prefix).
-		Scan(&idStr, &p.Prefix, &p.IPVersion, &p.FirstSeen, &p.LastSeen)
+	query := fmt.Sprintf("SELECT id, prefix, first_seen, last_seen FROM %s WHERE prefix = ?", tableName)
+	err = tx.QueryRow(query, prefix).
+		Scan(&idStr, &p.Prefix, &p.FirstSeen, &p.LastSeen)
 
 	if err == nil {
 		// Prefix exists, update last_seen
 		p.ID, _ = uuid.Parse(idStr)
-		_, err = tx.Exec("UPDATE prefixes SET last_seen = ? WHERE id = ?", timestamp, p.ID.String())
+		p.IPVersion = ipVersion
+		updateQuery := fmt.Sprintf("UPDATE %s SET last_seen = ? WHERE id = ?", tableName)
+		_, err = tx.Exec(updateQuery, timestamp, p.ID.String())
 		if err != nil {
 			return nil, err
 		}
@@ -580,12 +590,12 @@ func (d *Database) GetOrCreatePrefix(prefix string, timestamp time.Time) (*Prefi
 	p = Prefix{
 		ID:        generateUUID(),
 		Prefix:    prefix,
-		IPVersion: detectIPVersion(prefix),
+		IPVersion: ipVersion,
 		FirstSeen: timestamp,
 		LastSeen:  timestamp,
 	}
-	_, err = tx.Exec("INSERT INTO prefixes (id, prefix, ip_version, first_seen, last_seen) VALUES (?, ?, ?, ?, ?)",
-		p.ID.String(), p.Prefix, p.IPVersion, p.FirstSeen, p.LastSeen)
+	insertQuery := fmt.Sprintf("INSERT INTO %s (id, prefix, first_seen, last_seen) VALUES (?, ?, ?, ?)", tableName)
+	_, err = tx.Exec(insertQuery, p.ID.String(), p.Prefix, p.FirstSeen, p.LastSeen)
 	if err != nil {
 		return nil, err
 	}
@@ -805,26 +815,18 @@ func (d *Database) GetStatsContext(ctx context.Context) (Stats, error) {
 		return stats, err
 	}
 
-	// Count prefixes
-	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM prefixes").Scan(&stats.Prefixes)
+	// Count prefixes from both tables
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM prefixes_v4").Scan(&stats.IPv4Prefixes)
 	if err != nil {
 		return stats, err
 	}
 
-	// Count IPv4 and IPv6 prefixes
-	const ipVersionV4 = 4
-	err = d.db.QueryRowContext(ctx,
-		"SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV4).Scan(&stats.IPv4Prefixes)
+	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM prefixes_v6").Scan(&stats.IPv6Prefixes)
 	if err != nil {
 		return stats, err
 	}
 
-	const ipVersionV6 = 6
-	err = d.db.QueryRowContext(ctx,
-		"SELECT COUNT(*) FROM prefixes WHERE ip_version = ?", ipVersionV6).Scan(&stats.IPv6Prefixes)
-	if err != nil {
-		return stats, err
-	}
+	stats.Prefixes = stats.IPv4Prefixes + stats.IPv6Prefixes
 
 	// Count peerings
 	err = d.db.QueryRowContext(ctx, "SELECT COUNT(*) FROM peerings").Scan(&stats.Peerings)

internal/database/schema.sql

@@ -11,10 +11,18 @@ CREATE TABLE IF NOT EXISTS asns (
 	last_seen DATETIME NOT NULL
 );
 
-CREATE TABLE IF NOT EXISTS prefixes (
+-- IPv4 prefixes table
+CREATE TABLE IF NOT EXISTS prefixes_v4 (
+	id TEXT PRIMARY KEY,
+	prefix TEXT UNIQUE NOT NULL,
+	first_seen DATETIME NOT NULL,
+	last_seen DATETIME NOT NULL
+);
+
+-- IPv6 prefixes table
+CREATE TABLE IF NOT EXISTS prefixes_v6 (
 	id TEXT PRIMARY KEY,
 	prefix TEXT UNIQUE NOT NULL,
-	ip_version INTEGER NOT NULL, -- 4 for IPv4, 6 for IPv6
 	first_seen DATETIME NOT NULL,
 	last_seen DATETIME NOT NULL
 );
@@ -52,8 +60,11 @@ CREATE TABLE IF NOT EXISTS bgp_peers (
 	last_message_type TEXT
 );
 
-CREATE INDEX IF NOT EXISTS idx_prefixes_ip_version ON prefixes(ip_version);
-CREATE INDEX IF NOT EXISTS idx_prefixes_version_prefix ON prefixes(ip_version, prefix);
+-- Indexes for prefixes_v4 table
+CREATE INDEX IF NOT EXISTS idx_prefixes_v4_prefix ON prefixes_v4(prefix);
+
+-- Indexes for prefixes_v6 table
+CREATE INDEX IF NOT EXISTS idx_prefixes_v6_prefix ON prefixes_v6(prefix);
 CREATE INDEX IF NOT EXISTS idx_announcements_timestamp ON announcements(timestamp);
 CREATE INDEX IF NOT EXISTS idx_announcements_prefix_id ON announcements(prefix_id);
 CREATE INDEX IF NOT EXISTS idx_announcements_asn_id ON announcements(asn_id);
@@ -61,9 +72,6 @@ CREATE INDEX IF NOT EXISTS idx_peerings_as_a ON peerings(as_a);
 CREATE INDEX IF NOT EXISTS idx_peerings_as_b ON peerings(as_b);
 CREATE INDEX IF NOT EXISTS idx_peerings_lookup ON peerings(as_a, as_b);
 
--- Additional indexes for prefixes table
-CREATE INDEX IF NOT EXISTS idx_prefixes_prefix ON prefixes(prefix);
-
 -- Indexes for asns table
 CREATE INDEX IF NOT EXISTS idx_asns_number ON asns(number);