[galaxy-dev] How to retrieve the current job ID

Hi All I am working on one galaxy tool that could output results to database and I want to link the data records with galaxy job table by job id. Is it possible to retrieve the current job id in the tools config or tools code? I read the wikis and manuals and only find one Deprecated tag <code> has some clues like exec_after_job()? Does anyone know how to achieve this? Best regards -lee