X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=osm_policy_module%2Fcore%2Fdatabase.py;h=3ca2e33e21aa87ae7b6e1dd501f32ac3eacede0b;hb=10be7c984475707be716708dfdd2d91a655158dc;hp=e522b8d97effad8006f4143583ecb6641c1bc4ea;hpb=a4e615d9bab28eefa0ae1e713ad75289ed2f65cc;p=osm%2FPOL.git

diff --git a/osm_policy_module/core/database.py b/osm_policy_module/core/database.py
index e522b8d..3ca2e33 100644
--- a/osm_policy_module/core/database.py
+++ b/osm_policy_module/core/database.py
@@ -23,16 +23,18 @@
 ##
 import datetime
 import logging
+import os
 
-from peewee import CharField, IntegerField, ForeignKeyField, Model, TextField, AutoField, DateTimeField
+from peewee import CharField, IntegerField, ForeignKeyField, Model, TextField, AutoField, DateTimeField, Proxy
+from peewee_migrate import Router
 from playhouse.db_url import connect
 
+from osm_policy_module import migrations
 from osm_policy_module.core.config import Config
 
 log = logging.getLogger(__name__)
-cfg = Config.instance()
 
-db = connect(cfg.OSMPOL_SQL_DATABASE_URI)
+db = Proxy()
 
 
 class BaseModel(Model):
@@ -53,27 +55,31 @@ class ScalingPolicy(BaseModel):
     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 create_tables(self):
-        try:
-            db.connect()
-            db.create_tables([ScalingGroup, ScalingPolicy, ScalingCriteria, ScalingAlarm])
-            db.close()
-        except Exception as e:
-            log.exception("Error creating tables: ")
+    def __init__(self, config: Config):
+        db.initialize(connect(config.get('sql', 'database_uri')))
+
+    def create_tables(self) -> None:
+        with db.atomic():
+            router = Router(db, os.path.dirname(migrations.__file__))
+            router.run()
+
+    def get_alarm(self, alarm_uuid: str):
+        with db.atomic():
+            return ScalingAlarm.select().where(ScalingAlarm.alarm_uuid == alarm_uuid).get()