Override #save_result to write to tracking database

app/workers/repository_check/single_repository_worker.rb

@@ -3,6 +3,8 @@ module RepositoryCheck
     include ApplicationWorker
     include RepositoryCheckQueue
 
+    prepend ::EE::RepositoryCheck::SingleRepositoryWorker
+
     def perform(project_id)
       project = Project.find(project_id)
       result = check(project)

ee/app/workers/ee/repository_check/single_repository_worker.rb

+module EE
+  module RepositoryCheck
+    module SingleRepositoryWorker
+      extend ActiveSupport::Concern
+      extend ::Gitlab::Utils::Override
+
+      private
+
+      override :save_result
+      def save_result(project, failure)
+        # TODO: Check for Geo
+
+        # TODO: What if project registry does not exist
+
+        project_registry = Geo::ProjectRegistry.find_by(project_id: project.id)
+
+        project_registry.update_columns(
+          last_repository_check_failed: failure,
+          last_repository_check_at: Time.now
+        )
+      end
+    end
+  end
+end

ee/spec/workers/ee/repository_check/single_repository_worker_spec.rb

+require 'spec_helper'
+
+describe EE::RepositoryCheck::SingleRepositoryWorker do
+  set(:project) { create(:project) }
+  set(:project_registry) { create(:geo_project_registry, project: project) }
+  set(:secondary) { create(:geo_node) }
+
+  subject(:worker) { RepositoryCheck::SingleRepositoryWorker.new }
+
+  it 'saves results to Geo registry' do
+    expect do
+      worker.perform(project.id)
+    end.to change { project_registry.reload.last_repository_check_at }
+  end
+end