Merge branch 'sh-handle-anonymous-clones-project-moved' into 'master'

Fix Error 500s with anonymous clones for a project that has moved

Closes #41457

See merge request gitlab-org/gitlab-ce!16128

changelogs/unreleased/sh-handle-anonymous-clones-project-moved.yml

+---
+title: Fix Error 500s with anonymous clones for a project that has moved
+merge_request:
+author:
+type: fixed

lib/gitlab/checks/project_moved.rb

@@ -21,6 +21,10 @@ module Gitlab
       end
 
       def add_redirect_message
+        # Don't bother with sending a redirect message for anonymous clones
+        # because they never see it via the `/internal/post_receive` endpoint
+        return unless user.present? && project.present?
+
         Gitlab::Redis::SharedState.with do |redis|
           key = self.class.redirect_message_key(user.id, project.id)
           redis.setex(key, 5.minutes, redirect_message)

spec/lib/gitlab/checks/project_moved_spec.rb

@@ -35,6 +35,12 @@ describe Gitlab::Checks::ProjectMoved, :clean_gitlab_redis_shared_state do
       project_moved = described_class.new(project, user, 'foo/bar', 'http')
       expect(project_moved.add_redirect_message).to eq("OK")
     end
+
+    it 'should handle anonymous clones' do
+      project_moved = described_class.new(project, nil, 'foo/bar', 'http')
+
+      expect(project_moved.add_redirect_message).to eq(nil)
+    end
   end
 
   describe '#redirect_message' do