1 files changed, 21 insertions, 1 deletions
diff --git a/lib/gitlab/checks/base_checker.rb b/lib/gitlab/checks/base_checker.rb
index f8cda0382fe..09b17b5b76b 100644
--- a/lib/gitlab/checks/base_checker.rb
+++ b/lib/gitlab/checks/base_checker.rb
@@ -18,12 +18,16 @@ module Gitlab
 
       private
 
+      def creation?
+        Gitlab::Git.blank_ref?(oldrev)
+      end
+
       def deletion?
         Gitlab::Git.blank_ref?(newrev)
       end
 
       def update?
-        !Gitlab::Git.blank_ref?(oldrev) && !deletion?
+        !creation? && !deletion?
       end
 
       def updated_from_web?
@@ -33,6 +37,22 @@ module Gitlab
       def tag_exists?
         project.repository.tag_exists?(tag_name)
       end
+
+      def validate_once(resource)
+        Gitlab::SafeRequestStore.fetch(cache_key_for_resource(resource)) do
+          yield(resource)
+
+          true
+        end
+      end
+
+      def cache_key_for_resource(resource)
+        "git_access:#{checker_cache_key}:#{resource.cache_key}"
+      end
+
+      def checker_cache_key
+        self.class.name.demodulize.underscore
+      end
     end
   end
 end