import argparse
import loggingfrom neutronclient.neutron import v2_0 as neutronV20
from neutronclient.openstack.common.gettextutils import _
RESOURCE = 'myextension'class ListExtension(neutronV20.ListCommand):"""List extensions"""resource = RESOURCElog = logging.getLogger(__name__ + '.ListExtension')list_columns = ['id', 'name']class ShowExtension(neutronV20.ShowCommand):"""Show information of a given extension."""resource = RESOURCElog = logging.getLogger(__name__ + '.ShowExtension')class CreatePhysicalGateway(neutronV20.CreateCommand):"""Create an extension."""resource = RESOURCElog = logging.getLogger(__name__ + '.CreateExtension')def add_known_arguments(self, parser):parser.add_argument('name', metavar='NAME',help=_('Name of extension to create'))def args2body(self, parsed_args):body = {self.resource: {'name': parsed_args.name}}return body

class UpdateExtension(neutronV20.UpdateCommand):"""update a given extension."""resource = RESOURCElog = logging.getLogger(__name__ + '.UpdateExtension')      

class DeleteExtension(neutronV20.DeleteCommand):"""Delete a given extension."""resource = RESOURCElog = logging.getLogger(__name__ + '.DeleteExtension')       

    myextensions_path = "/myextensions"myextension_path = "/myextensions/%s"

　　 @APIParamsCalldef list_myextensions(self, retrieve_all=True, **_params):"""Fetches a list of all myextensions for a tenant."""return self.list('myextensions', self.myextensions_path, retrieve_all,**_params)@APIParamsCalldef show_myextension(self, myextension, **_params):"""Fetches information of a certain entry in myextension."""return self.get(self.myextension_path % (myextension), params=_params)@APIParamsCalldef create_myextension(self, body=None):"""Creates a new myextension entry."""return self.post(self.myextensions_path, body=body)@APIParamsCalldef delete_myextension(self, myextension):"""Deletes the specified myextension."""return self.delete(self.myextension_path % (myextension))@APIParamsCalldef update_myextension(self, myextension, body=None):"""Updates a myextension."""return self.put(self.myextension_path % (myextension), body=body)