new_contents: #!/usr/bin/env python
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Authors:
  # - Wen Guan, wen.guan@cern.ch, 2018
  
  
  import os
  
  from pilot.control.payloads import generic
  from pilot.util.auxiliary import get_logger
  from pilot.util.container import execute
  
  import logging
  logger = logging.getLogger(__name__)
  
  
  class Executor(generic.Executor):
      def __init__(self, args, job, out, err):
          super(Executor, self).__init__(args, job, out, err)
  
      def untar_file(self, lfn, job):
          pfn = os.path.join(job.workdir, lfn)
          command = "tar -xf %s -C %s" % (pfn, job.workdir)
          logger.info("Untar file: %s" % command)
          exit_code, stdout, stderr = execute(command)
          logger.info("exit_code: %s, stdout: %s, stderr: %s\n" % (exit_code, stdout, stderr))
  
      def before_payload(self, job):
          """
          Functions to run before payload
  
          :param job: job object
          """
          log = get_logger(job.jobid, logger)
  
          log.info("untar input tar files for eventservicemerge job")
          for fspec in job.indata:
              if fspec.is_tar:
                  self.untar_file(fspec.lfn, job)
  
          log.info("Processing writeToFile for eventservicemerge job")
          job.process_writetofile()
  
          super(Executor, self).before_payload(job)
  
subject: add eventservicemerge executor