1 files changed, 29 insertions, 0 deletions
diff --git a/lib/gitlab/hash_digest/facade.rb b/lib/gitlab/hash_digest/facade.rb
new file mode 100644
index 00000000000..d8efef02893
--- /dev/null
+++ b/lib/gitlab/hash_digest/facade.rb
@@ -0,0 +1,29 @@
+# frozen_string_literal: true
+
+module Gitlab
+  module HashDigest
+    # Used for rolling out to use OpenSSL::Digest::SHA256
+    # for ActiveSupport::Digest
+    class Facade
+      class << self
+        def hexdigest(...)
+          hash_digest_class.hexdigest(...)
+        end
+
+        def hash_digest_class
+          if use_sha256?
+            ::OpenSSL::Digest::SHA256
+          else
+            ::Digest::MD5 # rubocop:disable Fips/MD5
+          end
+        end
+
+        def use_sha256?
+          return false unless Feature.feature_flags_available?
+
+          Feature.enabled?(:active_support_hash_digest_sha256)
+        end
+      end
+    end
+  end
+end