Add OTI event-handler project

[dcaegen2/platform.git] / oti / event-handler / otihandler / dbclient / db_dao.py

diff --git a/oti/event-handler/otihandler/dbclient/db_dao.py b/oti/event-handler/otihandler/dbclient/db_dao.py
new file mode 100644 (file)
index 0000000..78fa058
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+++ b/oti/event-handler/otihandler/dbclient/db_dao.py
@@ -0,0 +1,33 @@
+# ================================================================================
+# Copyright (c) 2019-2020 AT&T Intellectual Property. All rights reserved.
+# ================================================================================
+# 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.
+# ============LICENSE_END=========================================================
+
+""" SqlAlchemy ORM engine for postgresSql dti database """
+
+from sqlalchemy import create_engine
+
+class DaoBase:
+    _engine = None
+
+    @staticmethod
+    def init_db(dbConStr):
+        if DaoBase._engine:
+            return
+        DaoBase._engine = create_engine(dbConStr)
+
+    @staticmethod
+    def getDbEngine():
+        return DaoBase._engine
+