From 428d0c2e8e0a727d27681d3402d4671375043cf0 Mon Sep 17 00:00:00 2001
From: yue9944882 <291271447@qq.com>
Date: Mon, 6 Sep 2021 18:58:51 +0800
Subject: [PATCH] support retriving get-only storage storage

---
 pkg/util/context/context.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pkg/util/context/context.go b/pkg/util/context/context.go
index 6e83421..d81b76d 100644
--- a/pkg/util/context/context.go
+++ b/pkg/util/context/context.go
@@ -23,3 +23,13 @@ func GetParentStorage(ctx context.Context) (rest.StandardStorage, bool) {
 	}
 	return parentStorage.(rest.StandardStorage), true
 }
+
+// GetParentStorageGetter tries getting the get-only parent storage from
+// context.
+func GetParentStorageGetter(ctx context.Context) (rest.Getter, bool) {
+	parentStorage := ctx.Value(parentStorageContextKey)
+	if parentStorage == nil {
+		return nil, false
+	}
+	return parentStorage.(rest.Getter), true
+}