Initial cloud-services repo - gateway service + pkg modules

pkg/utils/randomvalues/noncryptorandomvalues.go

@@ -0,0 +1,44 @@
+package randomvalues
+
+import (
+	"math/rand"
+	"sync"
+	"time"
+)
+
+type NonCryptoGenerator struct {
+	characters string
+	*rand.Rand
+	*sync.Mutex
+}
+
+// Only set seed when you need a non-random value
+func NewNonCryptoGenerator(allowedchars string, seed int64) NonCryptoGenerator {
+	if len(allowedchars) == 0 {
+		allowedchars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+	}
+	instance := NonCryptoGenerator{
+		characters: allowedchars,
+	}
+
+	if seed != 0 {
+		instance.Rand = rand.New(rand.NewSource(seed))
+	}else{
+		instance.Rand = rand.New(rand.NewSource(time.Now().UnixMilli()))
+	}
+	instance.Mutex = &sync.Mutex{}
+
+	return instance
+}
+
+func (g *NonCryptoGenerator) GetString(length int) (string) {
+	g.Lock()
+	defer g.Unlock()
+	result := make([]byte, length)
+	for i := 0; i < length; i++ {
+		num := g.Intn(len(g.characters))
+		result[i] = g.characters[num]
+	}
+
+	return string(result)
+}