##
import logging
+import uuid
-from peewee import CharField, TextField, FloatField, Model
+from peewee import CharField, TextField, FloatField, Model, AutoField, Proxy
from playhouse.db_url import connect
from osm_mon.core.settings import Config
log = logging.getLogger(__name__)
-cfg = Config.instance()
-cfg.read_environ()
-db = connect(cfg.DATABASE)
+db = Proxy()
class BaseModel(Model):
+ id = AutoField(primary_key=True)
class Meta:
database = db
class Alarm(BaseModel):
+ uuid = CharField(unique=True)
name = CharField()
severity = CharField()
threshold = FloatField()
class DatabaseManager:
+ def __init__(self):
+ cfg = Config.instance()
+ cfg.read_environ()
+ db.initialize(connect(cfg.DATABASE))
+
def create_tables(self) -> None:
- try:
- db.connect()
+ with db.atomic():
db.create_tables([VimCredentials, Alarm])
- db.close()
- except Exception:
- log.exception("Error creating tables: ")
- def get_credentials(self, vim_uuid) -> VimCredentials:
- return VimCredentials.get_or_none(VimCredentials.uuid == vim_uuid)
+ def get_credentials(self, vim_uuid: str = None) -> VimCredentials:
+ with db.atomic():
+ return VimCredentials.get_or_none(VimCredentials.uuid == vim_uuid)
def save_credentials(self, vim_credentials) -> VimCredentials:
"""Saves vim credentials. If a record with same uuid exists, overwrite it."""
- exists = VimCredentials.get_or_none(VimCredentials.uuid == vim_credentials.uuid)
- if exists:
- vim_credentials.id = exists.id
- vim_credentials.save()
- return vim_credentials
+ with db.atomic():
+ exists = VimCredentials.get_or_none(VimCredentials.uuid == vim_credentials.uuid)
+ if exists:
+ vim_credentials.id = exists.id
+ vim_credentials.save()
+ return vim_credentials
def get_alarm(self, alarm_id) -> Alarm:
- alarm = (Alarm.select()
- .where(Alarm.alarm_id == alarm_id)
- .get())
- return alarm
+ with db.atomic():
+ alarm = (Alarm.select()
+ .where(Alarm.alarm_id == alarm_id)
+ .get())
+ return alarm
def save_alarm(self, name, threshold, operation, severity, statistic, metric_name, vdur_name,
vnf_member_index, nsr_id) -> Alarm:
"""Saves alarm."""
- alarm = Alarm()
- alarm.name = name
- alarm.threshold = threshold
- alarm.operation = operation
- alarm.severity = severity
- alarm.statistic = statistic
- alarm.monitoring_param = metric_name
- alarm.vdur_name = vdur_name
- alarm.vnf_member_index = vnf_member_index
- alarm.nsr_id = nsr_id
- alarm.save()
- return alarm
-
- def delete_alarm(self, alarm_id) -> None:
- alarm = (Alarm.select()
- .where(Alarm.alarm_id == alarm_id)
- .get())
- alarm.delete()
+ # TODO: Add uuid optional param and check if exists to handle updates (see self.save_credentials)
+ with db.atomic():
+ alarm = Alarm()
+ alarm.uuid = str(uuid.uuid4())
+ alarm.name = name
+ alarm.threshold = threshold
+ alarm.operation = operation
+ alarm.severity = severity
+ alarm.statistic = statistic
+ alarm.monitoring_param = metric_name
+ alarm.vdur_name = vdur_name
+ alarm.vnf_member_index = vnf_member_index
+ alarm.nsr_id = nsr_id
+ alarm.save()
+ return alarm
+
+ def delete_alarm(self, alarm_uuid) -> None:
+ with db.atomic():
+ alarm = (Alarm.select()
+ .where(Alarm.uuid == alarm_uuid)
+ .get())
+ alarm.delete_instance()
def get_vim_type(self, vim_account_id) -> str:
"""Get the vim type that is required by the message."""