code: def _cache_id(minion_id, cache_file):
      '''
      Helper function, writes minion id to a cache file.
      '''
      path = os.path.dirname(cache_file)
      try:
          if not os.path.isdir(path):
              os.makedirs(path)
      except OSError as exc:
          # Handle race condition where dir is created after os.path.isdir check
          if os.path.isdir(path):
              pass
          else:
              log.error('Failed to create dirs to minion_id file: %s', exc)
  
      try:
          with salt.utils.files.fopen(cache_file, 'w') as idf:
              idf.write(minion_id)
      except (IOError, OSError) as exc:
          log.error('Could not cache minion ID: %s', excf _cache_id(minion_id, cache_file):
      '''
      Helper function, writes minion id to a cache file.
      '''
      path = os.path.dirname(cache_file)
      try:
          if not os.path.isdir(path):
              os.makedirs(path)
      except OSError as exc:
          # Handle race condition where dir is created after os.path.isdir check
          if os.path.isdir(path):
              pass
          else:
              log.error('Failed to create dirs to minion_id file: %s', exc)
  
      try:
          with salt.utils.files.fopen(cache_file, 'w') as idf:
              idf.write(minion_id)
      except (IOError, OSError) as exc:
          log.error('Could not cache minion ID: %s', exc)
docs: Helper function, writes minion id to a cache file.