+# Copyright (C) 2021 Wind River Systems, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from __future__ import annotations
+from enum import Enum
+from dataclasses import dataclass
+
+from o2common.domain.base import AgRoot, Serializer
+
+
+class Subscription(AgRoot, Serializer):
+ def __init__(self, id: str, callback: str, consumersubid: str = '',
+ filter: str = '') -> None:
+ super().__init__()
+ self.subscriptionId = id
+ self.version_number = 0
+ self.callback = callback
+ self.consumerSubscriptionId = consumersubid
+ self.filter = filter
+
+
+class NotificationEventEnum(str, Enum):
+ CREATE = 'CREATE'
+ MODIFY = 'MODIFY'
+ DELETE = 'DELETE'
+
+
+class Message2SMO(Serializer):
+ def __init__(self, eventtype: NotificationEventEnum,
+ id: str, ref: str, updatetime: str) -> None:
+ self.notificationEventType = eventtype
+ self.objectRef = ref
+ self.id = id
+ self.updatetime = updatetime
+
+
+@dataclass
+class EventState():
+ Initial = 0
+ NotInstalled = 1
+ Installing = 2
+ Installed = 3
+ Updating = 4
+ Uninstalling = 5
+ Abnormal = 6
+ Deleted = 7