Add LLDP neighbor collection and endpoint.

Collect LLDP-MIB neighbor fields during SNMP scans, persist records, and expose LLDP results via REST.

Made-with: Cursor

internal/scans/postgres_store.go

@@ -413,3 +413,56 @@ limit $2`
 	}
 	return out
 }
+
+func (s *PostgresStore) SaveLLDPResult(scanID string, result LLDPResult) error {
+	query := `
+insert into scan_lldp (scan_id, ip, local_port_num, remote_chassis_id, remote_port_id, remote_sys_name, checked_at)
+values ($1, $2, $3, $4, $5, $6, $7)`
+	_, err := s.db.ExecContext(
+		context.Background(),
+		query,
+		scanID,
+		result.IP,
+		result.LocalPortNum,
+		result.RemoteChassisID,
+		result.RemotePortID,
+		result.RemoteSysName,
+		result.CheckedAt,
+	)
+	return err
+}
+
+func (s *PostgresStore) ListLLDPResults(scanID string, limit int) []LLDPResult {
+	if limit <= 0 {
+		limit = 2000
+	}
+	query := `
+select ip::text, coalesce(local_port_num, ''), coalesce(remote_chassis_id, ''),
+       coalesce(remote_port_id, ''), coalesce(remote_sys_name, ''), checked_at
+from scan_lldp
+where scan_id = $1
+order by checked_at desc
+limit $2`
+	rows, err := s.db.QueryContext(context.Background(), query, scanID, limit)
+	if err != nil {
+		return nil
+	}
+	defer rows.Close()
+
+	out := make([]LLDPResult, 0, limit)
+	for rows.Next() {
+		var lr LLDPResult
+		if err = rows.Scan(
+			&lr.IP,
+			&lr.LocalPortNum,
+			&lr.RemoteChassisID,
+			&lr.RemotePortID,
+			&lr.RemoteSysName,
+			&lr.CheckedAt,
+		); err != nil {
+			return nil
+		}
+		out = append(out, lr)
+	}
+	return out
+}