Initial cloud-services repo - gateway service + pkg modules

pkg/digitaltwin/cache.go

@@ -0,0 +1,59 @@
+package digitaltwin
+
+import (
+	"fiskerinc.com/modules/cache"
+	"fiskerinc.com/modules/logger"
+)
+
+// var existsCount ExistsCount
+
+type DigitalTwinCacheInterface interface {
+	Exists(vin string, prop string, value interface{}) bool
+}
+
+type DigitalTwinCache struct {
+	ringMap    *cache.RingMap
+	// existsChan chan<- bool
+}
+
+func NewDigitalTwinCache(capacity int) DigitalTwinCacheInterface {
+	// existsChannel := make(chan bool, 100)
+	// existsCount = ExistsCount{
+	// 	Channel: existsChannel,
+	// }
+	// go existsCount.Run()
+	return &DigitalTwinCache{
+		ringMap:    cache.NewRingMap(capacity),
+		// existsChan: existsChannel,
+	}
+}
+
+func (d *DigitalTwinCache) Exists(vin string, prop string, value interface{}) bool {
+	exists := d.ringMap.Exists(vin+prop, value)
+	// If the channel is full, we just fall through
+	// select {
+	// case d.existsChan <- exists:
+	// default:
+	// }
+	return exists
+}
+
+type ExistsCount struct {
+	Total   int
+	Exists  int
+	Channel <-chan bool
+}
+
+func (ec *ExistsCount) Run() {
+	for exists := range ec.Channel {
+		ec.Total++
+		if exists {
+			ec.Exists += 1
+		}
+		if ec.Total >= 180000000 {
+			logger.Error().Int("Cached Entries", ec.Exists).Int("Total Entries", ec.Total).Msg("Digital Twin Cache Results")
+			ec.Total = 0
+			ec.Exists = 0
+		}
+	}
+}