when 'GET'
          upl = agent.upgrade_requests.where({ _id: @params['upgrade']}).first
          content = GridFS.get upl[:_grid]
          trace :debug, "[#{@request[:peer]}] Requested the UPGRADE #{@params['upgrade']} -- #{content.file_length.to_s_bytes}"
          return ok(content.read, {content_type: content.content_type})