Add new error for invalid response

There are a number of places where we expect a certain format of
response. If it's not found we often end up raising a KeyError when
accessing data.

Create a new Exception type that is raised when a HTTP response is not
appropriate for parsing and use it within authentication calls.

Closes-Bug: #1307306
Change-Id: I3cf2db07a8e76ee17702130e9efb0edf640d293a

1 files changed, 8 insertions, 0 deletions

diff --git a/keystoneclient/exceptions.py b/keystoneclient/exceptions.py
index d9d3f38..4572af9 100644
--- a/keystoneclient/exceptions.py
+++ b/keystoneclient/exceptions.py
@@ -61,3 +61,11 @@ class MissingAuthPlugin(ClientException):
 class NoMatchingPlugin(ClientException):
     """There were no auth plugins that could be created from the parameters
     provided."""
+
+
+class InvalidResponse(ClientException):
+    """The response from the server is not valid for this request."""
+
+    def __init__(self, response):
+        super(InvalidResponse, self).__init__()
+        self.response = response