Expose artifacts #locked? in BuildArtifactEntity

app/serializers/build_artifact_entity.rb

@@ -23,6 +23,10 @@ class BuildArtifactEntity < Grape::Entity
     fast_browse_project_job_artifacts_path(project, job)
   end
 
+  expose :locked, if: -> (*) { job.job_artifacts_archive.present? } do |job|
+    job.job_artifacts_archive.locked?
+  end
+
   private
 
   alias_method :job, :object

spec/serializers/build_artifact_entity_spec.rb

@@ -30,5 +30,9 @@ describe BuildArtifactEntity do
       expect(subject[:browse_path])
         .to include "jobs/#{job.id}/artifacts/browse"
     end
+
+    it 'exposes locked information about artifact' do
+      expect(subject).to include(:locked)
+    end
   end
 end