import datetime
import logging
-from peewee import CharField, IntegerField, ForeignKeyField, Model, TextField, AutoField, DateTimeField
-from playhouse.sqlite_ext import SqliteExtDatabase
+from peewee import CharField, IntegerField, ForeignKeyField, Model, TextField, AutoField, DateTimeField, Proxy
+from playhouse.db_url import connect
from osm_policy_module.core.config import Config
log = logging.getLogger(__name__)
-cfg = Config.instance()
-db = SqliteExtDatabase('policy_module.db')
+db = Proxy()
class BaseModel(Model):
name = CharField()
cooldown_time = IntegerField()
last_scale = DateTimeField(default=datetime.datetime.now)
- scaling_group = ForeignKeyField(ScalingGroup, related_name='scaling_policies')
+ scaling_group = ForeignKeyField(ScalingGroup, related_name='scaling_policies', on_delete='CASCADE')
class ScalingCriteria(BaseModel):
name = CharField()
- scaling_policy = ForeignKeyField(ScalingPolicy, related_name='scaling_criterias')
+ scaling_policy = ForeignKeyField(ScalingPolicy, related_name='scaling_criterias', on_delete='CASCADE')
class ScalingAlarm(BaseModel):
- alarm_id = CharField()
+ alarm_uuid = CharField(unique=True)
action = CharField()
vnf_member_index = IntegerField()
vdu_name = CharField()
- scaling_criteria = ForeignKeyField(ScalingCriteria, related_name='scaling_alarms')
+ scaling_criteria = ForeignKeyField(ScalingCriteria, related_name='scaling_alarms', on_delete='CASCADE')
class DatabaseManager:
+ def init_db(self, config: Config):
+ db.initialize(connect(config.get('sql', 'database_uri')))
+ self.create_tables()
+
def create_tables(self):
- try:
- db.connect()
+ with db.atomic():
db.create_tables([ScalingGroup, ScalingPolicy, ScalingCriteria, ScalingAlarm])
- db.close()
- except Exception as e:
- log.exception("Error creating tables: ")
+
+ def get_alarm(self, alarm_uuid: str):
+ with db.atomic():
+ return ScalingAlarm.select().where(ScalingAlarm.alarm_uuid == alarm_uuid).get()