convert token to library

common/token/token.go

@@ -0,0 +1,13 @@
+package token
+
+import "math/rand"
+
+// Generate returns an alphanumeric token of specified length
+func Generate(length int) string {
+	var chars = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+	b := make([]rune, length)
+	for i := range b {
+		b[i] = chars[rand.Intn(len(chars))]
+	}
+	return string(b)
+}