osm_mon/core/database.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
  25 import logging
  26 import os
  27 from typing import Iterable
  28
  29 from peewee import CharField, TextField, FloatField, Model, AutoField, Proxy
  30 from peewee_migrate import Router
  31 from playhouse.db_url import connect
  32
  33 from osm_mon import migrations
  34 from osm_mon.core.config import Config
  35
  36 log = logging.getLogger(__name__)
  37
  38 db = Proxy()
  39
  40
  41 class BaseModel(Model):
  42     id = AutoField(primary_key=True)
  43
  44     class Meta:
  45         database = db
  46
  47
  48 class VimCredentials(BaseModel):
  49     uuid = CharField(unique=True)
  50     name = CharField()
  51     type = CharField()
  52     url = CharField()
  53     user = CharField()
  54     password = CharField()
  55     tenant_name = CharField()
  56     config = TextField()
  57
  58
  59 class Alarm(BaseModel):
  60     uuid = CharField(unique=True)
  61     name = CharField()
  62     severity = CharField()
  63     threshold = FloatField()
  64     operation = CharField()
  65     statistic = CharField()
  66     monitoring_param = CharField()
  67     vdur_name = CharField()
  68     vnf_member_index = CharField()
  69     nsr_id = CharField()
  70
  71
  72 class DatabaseManager:
  73     def __init__(self, config: Config):
  74         db.initialize(connect(config.get('sql', 'database_uri')))
  75
  76     def create_tables(self) -> None:
  77         db.connect()
  78         with db.atomic():
  79             router = Router(db, os.path.dirname(migrations.__file__))
  80             router.run()
  81         db.close()
  82
  83
  84 class VimCredentialsRepository:
  85     @staticmethod
  86     def upsert(**query) -> VimCredentials:
  87         vim_credentials = VimCredentials.get_or_none(**query)
  88         if vim_credentials:
  89             query.update({'id': vim_credentials.id})
  90         vim_id = VimCredentials.insert(**query).on_conflict_replace().execute()
  91         return VimCredentials.get(id=vim_id)
  92
  93     @staticmethod
  94     def get(*expressions) -> VimCredentials:
  95         return VimCredentials.select().where(*expressions).get()
  96
  97
  98 class AlarmRepository:
  99     @staticmethod
 100     def create(**query) -> Alarm:
 101         return Alarm.create(**query)
 102
 103     @staticmethod
 104     def get(*expressions) -> Alarm:
 105         return Alarm.select().where(*expressions).get()
 106
 107     @staticmethod
 108     def list(*expressions) -> Iterable[Alarm]:
 109         if expressions == ():
 110             return Alarm.select()
 111         else:
 112             return Alarm.select().where(*expressions)