From a9afd44a91c0693d4c9a14a6a16bebdb2046b6ac Mon Sep 17 00:00:00 2001
From: Peter Hamilton <peter.allen.hamilton@gmail.com>
Date: Thu, 17 May 2018 13:28:11 -0400
Subject: [PATCH] Add a better error message when reading unparseable
 attributes

This change adds a basic error message that gets raised when
attempting to read an unparseable attribute (i.e., an attribute
that is not supported by the library).

Fixes #429
---
 kmip/core/objects.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kmip/core/objects.py b/kmip/core/objects.py
index 195ccb3..5b518ec 100644
--- a/kmip/core/objects.py
+++ b/kmip/core/objects.py
@@ -112,6 +112,8 @@ class Attribute(Struct):
             enum_type = name
 
         value = self.value_factory.create_attribute_value(enum_type, None)
+        if value is None:
+            raise Exception("No value type for {}".format(enum_name))
         self.attribute_value = value
         self.attribute_value.tag = Tags.ATTRIBUTE_VALUE
         self.attribute_value.read(tstream)