text: # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License. You may obtain
  # a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  # License for the specific language governing permissions and limitations
  # under the License.
  
  import yaml
  
  from oslo_serialization import jsonutils
  
  from tackerclient.i18n import _
  from tackerclient.tacker import v1_0 as tackerV10
  
  _NSD = "nsd"
  
  
  class ListNSD(tackerV10.ListCommand):
      """List NSDs that belong to a given tenant."""
  
      resource = _NSD
      list_columns = ['id', 'name', 'template_source', 'description']
  
      def get_parser(self, prog_name):
          parser = super(ListNSD, self).get_parser(prog_name)
          parser.add_argument(
              '--template-source',
              help=_("List NSD with specified template source. Available \
                     options are 'onboared' (default), 'inline' or 'all'"),
              action='store',
              default='onboarded')
          return parser
  
      def args2search_opts(self, parsed_args):
          search_opts = super(ListNSD, self).args2search_opts(parsed_args)
          template_source = parsed_args.template_source
          if parsed_args.template_source:
              search_opts.update({'template_source': template_source})
          return search_opts
  
  
  class ShowNSD(tackerV10.ShowCommand):
      """Show information of a given NSD."""
  
      resource = _NSD
  
  
  class CreateNSD(tackerV10.CreateCommand):
      """Create a NSD."""
      resource = _NSD
      remove_output_fields = ["attributes"]
  
      def add_known_arguments(self, parser):
          parser.add_argument('--nsd-file', help='Specify NSD file',
                              required=True)
          parser.add_argument(
              'name', metavar='NAME',
              help='Set a name for the NSD')
          parser.add_argument(
              '--description',
              help='Set a description for the NSD')
  
      def args2body(self, parsed_args):
          body = {self.resource: {}}
          nsd = None
          with open(parsed_args.nsd_file) as f:
              nsd = yaml.safe_load(f.read())
          tackerV10.update_dict(parsed_args, body[self.resource],
                                ['tenant_id', 'name', 'description'])
          if nsd:
              body[self.resource]['attributes'] = {'nsd': nsd}
  
          return body
  
  
  class DeleteNSD(tackerV10.DeleteCommand):
      """Delete a given NSD."""
      resource = _NSD
  
  
  class ShowTemplateNSD(tackerV10.ShowCommand):
      """Show template of a given NSD."""
      resource = _NSD
  
      def run(self, parsed_args):
          self.log.debug('run(%s)', parsed_args)
          template = None
          data = self.get_data(parsed_args)
          try:
              attributes_index = data[0].index('attributes')
              attributes_json = data[1][attributes_index]
              template = jsonutils.loads(attributes_json).get('nsd', None)
          except (IndexError, TypeError, ValueError) as e:
              self.log.debug('Data handling error: %s', str(e))
          print(template or _('Unable to display NSD template!'))
  