1 files changed, 46 insertions, 0 deletions
diff --git a/app/uploaders/object_storage/cdn.rb b/app/uploaders/object_storage/cdn.rb
new file mode 100644
index 00000000000..0711ab0bd28
--- /dev/null
+++ b/app/uploaders/object_storage/cdn.rb
@@ -0,0 +1,46 @@
+# rubocop:disable Naming/FileName
+# frozen_string_literal: true
+
+require_relative 'cdn/google_cdn'
+
+module ObjectStorage
+  module CDN
+    module Concern
+      extend ActiveSupport::Concern
+
+      include Gitlab::Utils::StrongMemoize
+
+      def use_cdn?(request_ip)
+        return false unless cdn_options.is_a?(Hash) && cdn_options['provider']
+        return false unless cdn_provider
+
+        cdn_provider.use_cdn?(request_ip)
+      end
+
+      def cdn_signed_url
+        cdn_provider&.signed_url(path)
+      end
+
+      private
+
+      def cdn_provider
+        strong_memoize(:cdn_provider) do
+          provider = cdn_options['provider']&.downcase
+
+          next unless provider
+          next GoogleCDN.new(cdn_options) if provider == 'google'
+
+          raise "Unknown CDN provider: #{provider}"
+        end
+      end
+
+      def cdn_options
+        return {} unless options.object_store.key?('cdn')
+
+        options.object_store.cdn
+      end
+    end
+  end
+end
+
+# rubocop:enable Naming/FileName