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(
  38                 "Unknown database driver {}".format(config.get("section", "driver"))
  39             )
  40         self.common_db.db_connect(config.get("database"))
  41
  42     def get_vnfr(self, nsr_id: str, member_index: str):
  43         vnfr = self.common_db.get_one(
  44             "vnfrs", {"nsr-id-ref": nsr_id, "member-vnf-index-ref": member_index}
  45         )
  46         return vnfr
  47
  48     def get_vnfrs(self, nsr_id: str):
  49         # TODO: Change for multiple DF support
  50         nsr_nsd_df = self.get_nsr(nsr_id)["nsd"].get("df", [{}])[0]
  51         all_nsd_member_vnf_index = [
  52             vnf.get("id") for vnf in nsr_nsd_df.get("vnf-profile", [])
  53         ]
  54         return [
  55             self.get_vnfr(nsr_id, member_index)
  56             for member_index in all_nsd_member_vnf_index
  57         ]
  58
  59     def get_vnfd(self, vnfd_id: str):
  60         vnfr = self.common_db.get_one("vnfds", {"_id": vnfd_id})
  61         return vnfr
  62
  63     def get_nsr(self, nsr_id: str):
  64         nsr = self.common_db.get_one("nsrs", {"id": nsr_id})
  65         return nsr
  66
  67     def get_nslcmop(self, nslcmop_id):
  68         nslcmop = self.common_db.get_one("nslcmops", {"_id": nslcmop_id})
  69         return nslcmop
  70
  71     def get_vdur(self, nsr_id, member_index, vdur_name):
  72         vnfr = self.get_vnfr(nsr_id, member_index)
  73         for vdur in vnfr["vdur"]:
  74             if vdur["name"] == vdur_name:
  75                 return vdur
  76         raise VdurNotFound(
  77             "vdur not found for nsr-id %s, member_index %s and vdur_name %s",
  78             nsr_id,
  79             member_index,
  80             vdur_name,
  81         )
  82
  83     def create_nslcmop(self, nslcmop):
  84         self.common_db.create("nslcmops", nslcmop)