Introduce validate function on the right place (#209)

Co-authored-by: Robert Hoppe <robert.hoppe@mail.schwarz>

pkg/services/iaas-api/v1alpha/validate.go

@@ -0,0 +1,22 @@
+// this file is used for validating network data and properties
+
+package iaas
+
+import (
+	"fmt"
+	"regexp"
+)
+
+// ValidateNetworkName validates a given network name
+func ValidateNetworkName(name string) error {
+	if len(name) > 63 || name == "" {
+		return fmt.Errorf("name bust be non-empty and < 64 characters")
+	}
+
+	exp := `^[A-Za-z0-9]+((-|_|\s|\.)[A-Za-z0-9]+)*$`
+	r := regexp.MustCompile(exp)
+	if !r.MatchString(name) {
+		return fmt.Errorf("invalid cluster name. valid name is of: %s", exp)
+	}
+	return nil
+}