From 6306504c58e639bcdbff8d4463af4e8d729f7ef2 Mon Sep 17 00:00:00 2001
From: Jamie Lennox <jamielennox@gmail.com>
Date: Fri, 22 Jul 2016 04:16:04 +1000
Subject: [PATCH] Lazy load oauthlib for plugin loading

If oauthlib is not available the oauth plugins should not be marked as
available when iterating plugins.

Change-Id: Idabb7adf61dc5ca36fc1524af47e346f8f296245
---
 keystoneauth1/extras/oauth1/_loading.py | 4 ++++
 keystoneauth1/extras/oauth1/v3.py       | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/keystoneauth1/extras/oauth1/_loading.py b/keystoneauth1/extras/oauth1/_loading.py
index 20129f00..fa43232e 100644
--- a/keystoneauth1/extras/oauth1/_loading.py
+++ b/keystoneauth1/extras/oauth1/_loading.py
@@ -22,6 +22,10 @@ class V3OAuth1(loading.BaseIdentityLoader):
     def plugin_class(self):
         return v3.OAuth1
 
+    @property
+    def available(self):
+        return v3.oauth1 is not None
+
     def get_options(self):
         options = super(V3OAuth1, self).get_options()
 
diff --git a/keystoneauth1/extras/oauth1/v3.py b/keystoneauth1/extras/oauth1/v3.py
index bad801b5..98c768db 100644
--- a/keystoneauth1/extras/oauth1/v3.py
+++ b/keystoneauth1/extras/oauth1/v3.py
@@ -23,7 +23,10 @@
 
 import logging
 
-from oauthlib import oauth1
+try:
+    from oauthlib import oauth1
+except ImportError:
+    oauth1 = None
 
 from keystoneauth1.identity import v3