add services column to all systems table

agent/agent.go

@@ -161,8 +161,15 @@ func (a *Agent) gatherStats(cacheTimeMs uint16) *system.CombinedData {
 	}
 
 	// skip updating systemd services if cache time is not the default 60sec interval
-	if a.systemdManager != nil && cacheTimeMs == 60_000 && a.systemdManager.hasFreshStats {
-		data.SystemdServices = a.systemdManager.getServiceStats(nil, false)
+	if a.systemdManager != nil && cacheTimeMs == 60_000 {
+		totalCount := uint16(a.systemdManager.getServiceStatsCount())
+		if totalCount > 0 {
+			numFailed := a.systemdManager.getFailedServiceCount()
+			data.Info.Services = []uint16{totalCount, numFailed}
+		}
+		if a.systemdManager.hasFreshStats {
+			data.SystemdServices = a.systemdManager.getServiceStats(nil, false)
+		}
 	}
 
 	data.Stats.ExtraFs = make(map[string]*system.FsStats)

agent/systemd.go

@@ -62,6 +62,24 @@ func (sm *systemdManager) startWorker(conn *dbus.Conn) {
 	}()
 }
 
+// getServiceStatsCount returns the number of systemd services.
+func (sm *systemdManager) getServiceStatsCount() int {
+	return len(sm.serviceStatsMap)
+}
+
+// getFailedServiceCount returns the number of systemd services in a failed state.
+func (sm *systemdManager) getFailedServiceCount() uint16 {
+	sm.Lock()
+	defer sm.Unlock()
+	count := uint16(0)
+	for _, service := range sm.serviceStatsMap {
+		if service.State == systemd.StatusFailed {
+			count++
+		}
+	}
+	return count
+}
+
 // getServiceStats collects statistics for all running systemd services.
 func (sm *systemdManager) getServiceStats(conn *dbus.Conn, refresh bool) []*systemd.Service {
 	// start := time.Now()