Opens and closes db connections manually to avoid errors when using MySQL backend

[osm/MON.git] / osm_mon / core / database.py

diff --git a/osm_mon/core/database.py b/osm_mon/core/database.py
index 939abc6..3b601b2 100644 (file)
--- a/osm_mon/core/database.py
+++ b/osm_mon/core/database.py
@@ -25,6 +25,7 @@
 import logging
 import os
 import uuid
+import json
 
 from peewee import CharField, TextField, FloatField, Model, AutoField, Proxy
 from peewee_migrate import Router
@@ -74,34 +75,44 @@ class DatabaseManager:
         db.initialize(connect(config.get('sql', 'database_uri')))
 
     def create_tables(self) -> None:
+        db.connect()
         with db.atomic():
             router = Router(db, os.path.dirname(migrations.__file__))
             router.run()
+        db.close()
 
     def get_credentials(self, vim_uuid: str = None) -> VimCredentials:
+        db.connect()
         with db.atomic():
-            return VimCredentials.get_or_none(VimCredentials.uuid == vim_uuid)
+            vim_credentials = VimCredentials.get_or_none(VimCredentials.uuid == vim_uuid)
+        db.close()
+        return vim_credentials
 
     def save_credentials(self, vim_credentials) -> VimCredentials:
         """Saves vim credentials. If a record with same uuid exists, overwrite it."""
+        db.connect()
         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
+        db.close()
+        return vim_credentials
 
     def get_alarm(self, alarm_id) -> Alarm:
+        db.connect()
         with db.atomic():
             alarm = (Alarm.select()
                      .where(Alarm.alarm_id == alarm_id)
                      .get())
-            return alarm
+        db.close()
+        return alarm
 
     def save_alarm(self, name, threshold, operation, severity, statistic, metric_name, vdur_name,
                    vnf_member_index, nsr_id) -> Alarm:
         """Saves alarm."""
         # TODO: Add uuid optional param and check if exists to handle updates (see self.save_credentials)
+        db.connect()
         with db.atomic():
             alarm = Alarm()
             alarm.uuid = str(uuid.uuid4())
@@ -115,16 +126,25 @@ class DatabaseManager:
             alarm.vnf_member_index = vnf_member_index
             alarm.nsr_id = nsr_id
             alarm.save()
-            return alarm
+        db.close()
+        return alarm
 
     def delete_alarm(self, alarm_uuid) -> None:
+        db.connect()
         with db.atomic():
             alarm = (Alarm.select()
                      .where(Alarm.uuid == alarm_uuid)
                      .get())
             alarm.delete_instance()
+        db.close()
 
     def get_vim_type(self, vim_account_id) -> str:
         """Get the vim type that is required by the message."""
+        vim_type = None
         credentials = self.get_credentials(vim_account_id)
-        return str(credentials.type)
+        config = json.loads(credentials.config)
+        if 'vim_type' in config:
+            vim_type = config['vim_type']
+            return str(vim_type.lower())
+        else:
+            return str(credentials.type)