Enable serving static objects from an external storage

It consists of two parts:

1. Redirecting users to the configured external storage
1. Allowing the external storage to request the static object(s)
   on behalf of the user by means of specific tokens

Part of https://gitlab.com/gitlab-com/gl-infra/infrastructure/issues/6829

1 files changed, 14 insertions, 0 deletions

diff --git a/spec/models/application_setting_spec.rb b/spec/models/application_setting_spec.rb
index 4f7a6d102b8..d12f9b9100a 100644
--- a/spec/models/application_setting_spec.rb
+++ b/spec/models/application_setting_spec.rb
@@ -48,6 +48,10 @@ describe ApplicationSetting do
     it { is_expected.not_to allow_value(nil).for(:outbound_local_requests_whitelist) }
     it { is_expected.to allow_value([]).for(:outbound_local_requests_whitelist) }
 
+    it { is_expected.to allow_value(nil).for(:static_objects_external_storage_url) }
+    it { is_expected.to allow_value(http).for(:static_objects_external_storage_url) }
+    it { is_expected.to allow_value(https).for(:static_objects_external_storage_url) }
+
     context "when user accepted let's encrypt terms of service" do
       before do
         setting.update(lets_encrypt_terms_of_service_accepted: true)
@@ -420,6 +424,16 @@ describe ApplicationSetting do
         end
       end
     end
+
+    context 'static objects external storage' do
+      context 'when URL is set' do
+        before do
+          subject.static_objects_external_storage_url = http
+        end
+
+        it { is_expected.not_to allow_value(nil).for(:static_objects_external_storage_auth_token) }
+      end
+    end
   end
 
   context 'restrict creating duplicates' do