refactor: openpitrix module

Signed-off-by: hongming <talonwan@yunify.com>

vendor/openpitrix.io/openpitrix/pkg/util/reflectutil/reflect.go

@@ -0,0 +1,38 @@
+// Copyright 2018 The OpenPitrix Authors. All rights reserved.
+// Use of this source code is governed by a Apache license
+// that can be found in the LICENSE file.
+
+package reflectutil
+
+import "reflect"
+
+func In(value interface{}, container interface{}) bool {
+	containerValue := reflect.ValueOf(container)
+	switch reflect.TypeOf(container).Kind() {
+	case reflect.Slice, reflect.Array:
+		for i := 0; i < containerValue.Len(); i++ {
+			if containerValue.Index(i).Interface() == value {
+				return true
+			}
+		}
+	case reflect.Map:
+		if containerValue.MapIndex(reflect.ValueOf(value)).IsValid() {
+			return true
+		}
+	default:
+		return false
+	}
+	return false
+}
+
+func ValueIsNil(value reflect.Value) bool {
+	k := value.Kind()
+	switch k {
+	case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.Interface, reflect.Slice:
+		return value.IsNil()
+	case reflect.Invalid:
+		return true
+	}
+	// base type had default value, is not nil
+	return false
+}