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 uuid
  27
  28 from peewee import CharField, TextField, FloatField, Model, AutoField
  29 from playhouse.db_url import connect
  30
  31 from osm_mon.core.settings import Config
  32
  33 log = logging.getLogger(__name__)
  34 cfg = Config.instance()
  35 cfg.read_environ()
  36
  37 db = connect(cfg.DATABASE)
  38
  39
  40 class BaseModel(Model):
  41     id = AutoField(primary_key=True)
  42
  43     class Meta:
  44         database = db
  45
  46
  47 class VimCredentials(BaseModel):
  48     uuid = CharField(unique=True)
  49     name = CharField()
  50     type = CharField()
  51     url = CharField()
  52     user = CharField()
  53     password = CharField()
  54     tenant_name = CharField()
  55     config = TextField(default='{}')
  56
  57
  58 class Alarm(BaseModel):
  59     uuid = CharField(unique=True)
  60     name = CharField()
  61     severity = CharField()
  62     threshold = FloatField()
  63     operation = CharField()
  64     statistic = CharField()
  65     monitoring_param = CharField()
  66     vdur_name = CharField()
  67     vnf_member_index = CharField()
  68     nsr_id = CharField()
  69
  70
  71 class DatabaseManager:
  72     def create_tables(self) -> None:
  73         try:
  74             db.connect()
  75             db.create_tables([VimCredentials, Alarm])
  76             db.close()
  77         except Exception:
  78             log.exception("Error creating tables: ")
  79
  80     def get_credentials(self, vim_uuid) -> VimCredentials:
  81         return VimCredentials.get_or_none(VimCredentials.uuid == vim_uuid)
  82
  83     def save_credentials(self, vim_credentials) -> VimCredentials:
  84         """Saves vim credentials. If a record with same uuid exists, overwrite it."""
  85         exists = VimCredentials.get_or_none(VimCredentials.uuid == vim_credentials.uuid)
  86         if exists:
  87             vim_credentials.id = exists.id
  88         vim_credentials.save()
  89         return vim_credentials
  90
  91     def get_alarm(self, alarm_id) -> Alarm:
  92         alarm = (Alarm.select()
  93                  .where(Alarm.alarm_id == alarm_id)
  94                  .get())
  95         return alarm
  96
  97     def save_alarm(self, name, threshold, operation, severity, statistic, metric_name, vdur_name,
  98                    vnf_member_index, nsr_id) -> Alarm:
  99         """Saves alarm."""
 100         # TODO: Add uuid optional param and check if exists to handle updates (see self.save_credentials)
 101         alarm = Alarm()
 102         alarm.uuid = str(uuid.uuid4())
 103         alarm.name = name
 104         alarm.threshold = threshold
 105         alarm.operation = operation
 106         alarm.severity = severity
 107         alarm.statistic = statistic
 108         alarm.monitoring_param = metric_name
 109         alarm.vdur_name = vdur_name
 110         alarm.vnf_member_index = vnf_member_index
 111         alarm.nsr_id = nsr_id
 112         alarm.save()
 113         return alarm
 114
 115     def delete_alarm(self, alarm_uuid) -> None:
 116         alarm = (Alarm.select()
 117                  .where(Alarm.uuid == alarm_uuid)
 118                  .get())
 119         alarm.delete_instance()
 120
 121     def get_vim_type(self, vim_account_id) -> str:
 122         """Get the vim type that is required by the message."""
 123         credentials = self.get_credentials(vim_account_id)
 124         return str(credentials.type)