def __validate_arguments()

in cosmos-db-migration-utility/src/configure/commandline_parser.py [0:0]

• 26 lines of code
• 13 McCabe index (conditional complexity)

  def __validate_arguments(self):
    parser = self.__get_parser()
    config = vars(parser.parse_args())
    logger.info("Command line arguments given: " + json.dumps(config))
    
    # Verify necessary components are supplied in command line arguments
    command = []
    if config["connection_string"]:
      command.append("connection_string")
    if config["status"]:
      command.append("status")
    if config["watch_status"]:
      command.append("watch_status")
    if not config["event_writer"] is None:
      command.append("event_writer")

    if len(command) == 0:
      raise ApplicationException("Missing input argument for command. Specify --connection-string or --event-writer.")
    if len(command) > 1:
      raise ApplicationException("Please specify only one of the commands: --connection-string, --event_writer, --status or --watch-status arguments.")

    config["command"] = command[0]
    logger.info("Validated Command line arguments are: " + json.dumps(config))
    
    if config["command"] == "event_writer":
      if config["event_writer"] != "start" and config["event_writer"] != "stop":
        raise ApplicationException("Given value for event-writer is not valid: {}. Valid values are stop or start".format(config["event_writer"]))
    elif config["command"] == "connection_string":
      if config["connection_string"] == "" or  config["connection_string"] == None:
        raise ApplicationException("Given value for connection-string is not valid: [{}].".format(config["connection_string"]))
    return config