Create a Config object

The _conf_get ugliness in auth_token middleware has been around for a
long time now to handle the abstraction from different oslo.config
options and the paste overrides. This logic is now also being needed in
other middlewares. Extract this into a common config object that has a
better interface and is easier to work with.

Change-Id: I8b8a1427bc527e43bb1baec25a881d93df3f93cc

1 files changed, 19 insertions, 0 deletions

diff --git a/keystonemiddleware/exceptions.py b/keystonemiddleware/exceptions.py
new file mode 100644
index 0000000..8a476e9
--- /dev/null
+++ b/keystonemiddleware/exceptions.py
@@ -0,0 +1,19 @@
+# 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.
+
+
+class KeystoneMiddlewareException(Exception):
+    pass
+
+
+class ConfigurationError(KeystoneMiddlewareException):
+    pass