code: def WriteCronJobRun(self, run_object, cursor=None):
      
      query = ("INSERT INTO cron_job_runs "
               "(job_id, run_id, write_time, run) "
               "VALUES (%s, %s, FROM_UNIXTIME(%s), %s) "
               "ON DUPLICATE KEY UPDATE "
               "run=VALUES(run), write_time=VALUES(write_time)")
  
      write_time_str = mysql_utils.RDFDatetimeToTimestamp(
          rdfvalue.RDFDatetime.Now())
      try:
        cursor.execute(query, [
            run_object.cron_job_id,
            db_utils.CronJobRunIDToInt(run_object.run_id),
            write_time_str,
            run_object.SerializeToString(),
        ])
      except MySQLdb.IntegrityError as e:
        raise db.UnknownCronJobError(
            "CronJob with id %s not found." % run_object.cron_job_id, cause=e)
docs: Stores a cron job run object in the database.