osm_policy_module/common/common_db_client.py

   1 # -*- coding: utf-8 -*-
   2
   3 # Copyright 2018 Whitestack, LLC
   4 # *************************************************************
   5
   6 # This file is part of OSM Monitoring module
   7 # All Rights Reserved to Whitestack, LLC
   8
   9 # Licensed under the Apache License, Version 2.0 (the "License"); you may
  10 # not use this file except in compliance with the License. You may obtain
  11 # a copy of the License at
  12
  13 #         http://www.apache.org/licenses/LICENSE-2.0
  14
  15 # Unless required by applicable law or agreed to in writing, software
  16 # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  17 # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
  18 # License for the specific language governing permissions and limitations
  19 # under the License.
  20
  21 # For those usages not covered by the Apache License, Version 2.0 please
  22 # contact: bdiaz@whitestack.com or glavado@whitestack.com
  23 ##
  24 from osm_common import dbmongo, dbmemory
  25
  26 from osm_policy_module.core.config import Config
  27 from osm_policy_module.core.exceptions import VdurNotFound
  28
  29
  30 class CommonDbClient:
  31     def __init__(self, config: Config):
  32         if config.get('database', 'driver') == "mongo":
  33             self.common_db = dbmongo.DbMongo()
  34         elif config.get('database', 'driver') == "memory":
  35             self.common_db = dbmemory.DbMemory()
  36         else:
  37             raise Exception("Unknown database driver {}".format(config.get('section', 'driver')))
  38         self.common_db.db_connect(config.get("database"))
  39
  40     def get_vnfr(self, nsr_id: str, member_index: str):
  41         vnfr = self.common_db.get_one("vnfrs",
  42                                       {"nsr-id-ref": nsr_id, "member-vnf-index-ref": member_index})
  43         return vnfr
  44
  45     def get_vnfrs(self, nsr_id: str):
  46         # TODO: Change for multiple DF support
  47         nsr_nsd_df = self.get_nsr(nsr_id)['nsd'].get('df', [{}])[0]
  48         all_nsd_member_vnf_index = [vnf.get('id') for vnf in nsr_nsd_df.get('vnf-profile', [])]
  49         return [self.get_vnfr(nsr_id, member_index) for member_index in all_nsd_member_vnf_index]
  50
  51     def get_vnfd(self, vnfd_id: str):
  52         vnfr = self.common_db.get_one("vnfds",
  53                                       {"_id": vnfd_id})
  54         return vnfr
  55
  56     def get_nsr(self, nsr_id: str):
  57         nsr = self.common_db.get_one("nsrs",
  58                                      {"id": nsr_id})
  59         return nsr
  60
  61     def get_nslcmop(self, nslcmop_id):
  62         nslcmop = self.common_db.get_one("nslcmops",
  63                                          {"_id": nslcmop_id})
  64         return nslcmop
  65
  66     def get_vdur(self, nsr_id, member_index, vdur_name):
  67         vnfr = self.get_vnfr(nsr_id, member_index)
  68         for vdur in vnfr['vdur']:
  69             if vdur['name'] == vdur_name:
  70                 return vdur
  71         raise VdurNotFound('vdur not found for nsr-id %s, member_index %s and vdur_name %s', nsr_id, member_index,
  72                            vdur_name)
  73
  74     def create_nslcmop(self, nslcmop):
  75         self.common_db.create("nslcmops", nslcmop)