lcm/ns/ns_create.py

   1 # Copyright 2016 ZTE Corporation.
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #         http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14 import logging
  15 import uuid
  16
  17 from lcm.pub.database.models import NSDModel, NSInstModel
  18 from lcm.pub.exceptions import NSLCMException
  19 from lcm.pub.utils.timeutil import now_time
  20
  21 logger = logging.getLogger(__name__)
  22
  23
  24 class CreateNSService(object):
  25     def __init__(self, nsd_id, ns_name, description):
  26         self.nsd_id = nsd_id
  27         self.ns_name = ns_name
  28         self.description = description
  29         self.ns_inst_id = ''
  30         self.ns_package_id = ''
  31
  32     def do_biz(self):
  33         self.check_nsd_valid()
  34         self.check_ns_inst_name_exist()
  35         self.create_ns_inst()
  36         logger.debug("CreateNSService::do_biz::ns_inst_id=%s" % self.ns_inst_id)
  37         return self.ns_inst_id
  38
  39     def check_nsd_valid(self):
  40         logger.debug("CreateNSService::check_nsd_valid::nsd_id=%s" % self.nsd_id)
  41         ns_package_info = NSDModel.objects.filter(nsd_id=self.nsd_id)
  42         if not ns_package_info:
  43             raise NSLCMException("nsd(%s) not exists." % self.nsd_id)
  44         self.ns_package_id = ns_package_info[0].id
  45         logger.debug("CreateNSService::check_nsd_valid::ns_package_id=%s" % self.ns_package_id)
  46
  47     def check_ns_inst_name_exist(self):
  48         is_exist = NSInstModel.objects.filter(name=self.ns_name).exists()
  49         logger.debug("CreateNSService::check_ns_inst_name_exist::is_exist=%s" % is_exist)
  50         if is_exist:
  51             raise NSLCMException("ns(%s) already existed." % self.ns_name)
  52
  53     def create_ns_inst(self):
  54         self.ns_inst_id = str(uuid.uuid4())
  55         logger.debug("CreateNSService::create_ns_inst::ns_inst_id=%s" % self.ns_inst_id)
  56         NSInstModel(id=self.ns_inst_id, name=self.ns_name, nspackage_id=self.ns_package_id,
  57                     nsd_id=self.nsd_id, description=self.description, status='empty',
  58                     lastuptime=now_time()).save()
  59