__init__.py 文件源码

def _expand_vm_settings(self, key, vm_number):
        """
        Expand VM option with given key for given number of VMs
        """
        tmp_value = self.getValue(key)
        if isinstance(tmp_value, str):
            scalar = True
            master_value = tmp_value
            tmp_value = [tmp_value]
        else:
            scalar = False
            master_value = tmp_value[0]

        master_value_str = str(master_value)
        if master_value_str.find('#') >= 0:
            self.__dict__[key] = []
            for vmindex in range(vm_number):
                value = master_value_str.replace('#VMINDEX', str(vmindex))
                for macro, args, param, _, step in re.findall(_PARSE_PATTERN, value):
                    multi = int(step) if len(step) and int(step) else 1
                    if macro == '#EVAL':
                        # pylint: disable=eval-used
                        tmp_result = str(eval(param))
                    elif macro == '#MAC':
                        mac_value = netaddr.EUI(param).value
                        mac = netaddr.EUI(mac_value + vmindex * multi)
                        mac.dialect = netaddr.mac_unix_expanded
                        tmp_result = str(mac)
                    elif macro == '#IP':
                        ip_value = netaddr.IPAddress(param).value
                        tmp_result = str(netaddr.IPAddress(ip_value + vmindex * multi))
                    else:
                        raise RuntimeError('Unknown configuration macro {} in {}'.format(macro, key))

                    value = value.replace("{}{}".format(macro, args), tmp_result)

                # retype value to original type if needed
                if not isinstance(master_value, str):
                    value = ast.literal_eval(value)
                self.__dict__[key].append(value)
        else:
            for vmindex in range(len(tmp_value), vm_number):
                self.__dict__[key].append(master_value)

        if scalar:
            self.__dict__[key] = self.__dict__[key][0]

        _LOGGER.debug("Expanding option: %s = %s", key, self.__dict__[key])