From 5bba657a8438f4ab267cc19feb68f0f4494d3ee0 Mon Sep 17 00:00:00 2001
From: Joshua Harlow <harlowja@yahoo-inc.com>
Date: Mon, 30 Dec 2013 14:06:38 -0800
Subject: [PATCH] Add stronger checking of backend configuration

Set a default if the backend configuration is not
provided as well as check for the configuration
being a dictionary instead of any arbitary non-false
type.

Change-Id: Id458ac0eb2d7b86c5602ed2f23a52fb2c6f6f0e7
---
 taskflow/persistence/backends/base.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/taskflow/persistence/backends/base.py b/taskflow/persistence/backends/base.py
index e0c6f27d..1f76aeab 100644
--- a/taskflow/persistence/backends/base.py
+++ b/taskflow/persistence/backends/base.py
@@ -26,6 +26,11 @@ class Backend(object):
     """Base class for persistence backends."""
 
     def __init__(self, conf):
+        if not conf:
+            conf = {}
+        if not isinstance(conf, dict):
+            raise TypeError("Configuration dictionary expected not: %s"
+                            % type(conf))
         self._conf = conf
 
     @abc.abstractmethod