code: def _process_file(self, path):
          
          try:
              f = open(path)
              for line in f:
                  self._process_line(line)
  
              os.remove(path)
          except IOError as ex:
              self.log.error("Could not open file `{path}': {error}".format(
                  path=path, error=ex.strerror))
docs: Parse and submit the metrics from a file