helper added

config/helper.go

@@ -26,3 +26,16 @@ func getEnvSeconds(key string, fallback int) time.Duration {
 	}
 	return time.Duration(fallback) * time.Second
 }
+
+func getEnvUint(key string, fallback uint) uint {
+	var def uint = 100
+	if value, ok := os.LookupEnv(key); ok {
+		num, err := strconv.ParseUint(value, 10, 64)
+		if err != nil {
+			log.Printf("Error converting %v to uint, using default value - %v", key, def)
+			return def
+		}
+		return uint(num)
+	}
+	return fallback
+}