--- /dev/null
+# 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.
+
+import abc
+from typing import List, Set
+from o2ims.domain import configuration_obj as obj
+
+
+class ConfigurationRepository(abc.ABC):
+ def __init__(self):
+ self.seen = set() # type: Set[obj.Configuration]
+
+ def add(self, configuration: obj.Configuration):
+ self._add(configuration)
+ self.seen.add(configuration)
+
+ def get(self, configuration_id) -> obj.Configuration:
+ configuration = self._get(configuration_id)
+ if configuration:
+ self.seen.add(configuration)
+ return configuration
+
+ def list(self) -> List[obj.Configuration]:
+ return self._list()
+
+ def update(self, configuration: obj.Configuration):
+ self._update(configuration)
+
+ def delete(self, configuration_id):
+ self._delete(configuration_id)
+
+ @abc.abstractmethod
+ def _add(self, configuration: obj.Configuration):
+ raise NotImplementedError
+
+ @abc.abstractmethod
+ def _get(self, configuration_id) -> obj.Configuration:
+ raise NotImplementedError
+
+ @abc.abstractmethod
+ def _update(self, configuration: obj.Configuration):
+ raise NotImplementedError
+
+ @abc.abstractmethod
+ def _delete(self, configuration_id):
+ raise NotImplementedError