Initial cloud-services repo - gateway service + pkg modules

services/gateway/sloppy/db.go

@@ -0,0 +1,28 @@
+package sloppy
+
+import (
+	"sync"
+
+	"fiskerinc.com/modules/db"
+	"fiskerinc.com/modules/db/queries"
+	"fiskerinc.com/modules/logger"
+)
+
+var (
+	carsDB     queries.CarsInterface
+	carsDBOnce sync.Once
+)
+
+func GetCarsDB() queries.CarsInterface {
+	carsDBOnce.Do(func() {
+		if carsDB != nil {
+			return
+		}
+		client := &db.DBClient{}
+		logger.Debug().Msg("Init Cars instance")
+		cars := &queries.Cars{}
+		cars.SetClient(client)
+		carsDB = cars
+	})
+	return carsDB
+}

services/gateway/sloppy/vinBlocker.go

@@ -0,0 +1,83 @@
+package sloppy
+
+import (
+	"slices"
+	"sync"
+	"time"
+
+	"fiskerinc.com/modules/logger"
+	"fiskerinc.com/modules/utils/whereami"
+)
+
+var vinblocker *VINBlocker
+var vinblockerOnce sync.Once
+
+// VIN Blocker fetches the list of allowed vins once per day, and stores them locally to check against
+func GetVINBlocker() *VINBlocker {
+	vinblockerOnce.Do(func() {
+		vinblocker = newVINBlocker()
+	})
+	return vinblocker
+}
+
+type VINBlocker struct {
+	allowedList  []string // The list of vins to allow
+	allowAll     bool     // Should we allow all vins to be used
+	sync.RWMutex          // Control overwriting the allowed list
+}
+
+func newVINBlocker() (vb *VINBlocker) {
+	vb = &VINBlocker{}
+	vb.allowAll = true // This will for half a second allow all cars to access cloud
+	// create a new thread to get the list of vins everyday
+	//On dev, always allow all connections
+	if whereami.Environment != whereami.DEVELOPMENT {
+		vb.updateVINList() // Run in thread, so no sneaks can happen
+		go vb.autoUpdate()
+	}
+	return vb
+}
+
+func (vb *VINBlocker) IsVINAllowed(vin string) (allow bool) {
+	// We are allowing all vins to connect
+	if vb.allowAll {
+		return true
+	}
+
+	vb.RLock()
+	defer vb.RUnlock()
+	// Returns the index of where the string might be, annoying
+	_, allow = slices.BinarySearch(vb.allowedList, vin)
+	return allow
+}
+
+func (vb *VINBlocker) autoUpdate() {
+	vb.updateVINList()
+	// Going to be pretty actively changed, so should change this to more detect when vin list is diff
+	nextRun := time.Now().Add(1 * time.Hour)
+	time.AfterFunc(time.Until(nextRun), vb.autoUpdate)
+}
+
+func (vb *VINBlocker) updateVINList() {
+	tempList := fetchVINList()
+	vb.Lock()
+	defer vb.Unlock()
+	if len(tempList) == 0 {
+		vb.allowAll = true
+	} else {
+		vb.allowAll = false
+	}
+	vb.allowedList = tempList
+}
+
+func fetchVINList() (vinList []string) {
+	carsDB := GetCarsDB()
+	var err error
+	vinList, err = carsDB.GetWhiteListCars()
+	if err != nil {
+		logger.Err(err).Msg("Failed to vinBlocker list")
+	}
+	// making sure the results are sorted
+	slices.Sort(vinList)
+	return
+}