def _run_edna(self, input_file, results_file, process_directory):
"""Starts EDNA"""
msg = "Starting EDNA characterisation using xml file %s" % input_file
logging.getLogger("queue_exec").info(msg)
args = (self.start_edna_command, input_file, results_file,
process_directory)
subprocess.call("%s %s %s %s" % args, shell=True)
self.result = None
if os.path.exists(results_file):
self.result = XSDataResultMXCuBE.parseFile(results_file)
return self.result
