1 files changed, 36 insertions, 0 deletions
diff --git a/oslo_db/sqlalchemy/compat/__init__.py b/oslo_db/sqlalchemy/compat/__init__.py
new file mode 100644
index 0000000..6713696
--- /dev/null
+++ b/oslo_db/sqlalchemy/compat/__init__.py
@@ -0,0 +1,36 @@
+# 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 oslo_utils import versionutils
+
+from sqlalchemy import __version__
+
+
+_vers = versionutils.convert_version_to_tuple(__version__)
+sqla_2 = _vers >= (2, )
+
+
+def dialect_from_exception_context(ctx):
+    if sqla_2:
+        # SQLAlchemy 2.0 still has context.engine, however if the
+        # exception context is called in the context of a ping handler,
+        # engine is not present.  need to use dialect instead
+        return ctx.dialect
+    else:
+        return ctx.engine.dialect
+
+
+def driver_connection(connection):
+    if sqla_2:
+        return connection.connection.driver_connection
+    else:
+        return connection.connection.connection