Use common parse_isotime in GlanceImageService

Rather than reimplement openstack-common's isotime functionality,
just use what's provided for us!

Change-Id: Id44eab3c34ae2c682d27d1563c6baaf68b979d2b

2 files changed, 8 insertions, 18 deletions

diff --git a/nova/image/glance.py b/nova/image/glance.py
index 4bebd2c64..0b2d29c7d 100644
--- a/nova/image/glance.py
+++ b/nova/image/glance.py
@@ -338,30 +338,14 @@ class GlanceImageService(object):
         return str(user_id) == str(context.user_id)
 
 
-# utility functions
 def _convert_timestamps_to_datetimes(image_meta):
     """Returns image with timestamp fields converted to datetime objects."""
     for attr in ['created_at', 'updated_at', 'deleted_at']:
         if image_meta.get(attr):
-            image_meta[attr] = _parse_glance_iso8601_timestamp(
-                image_meta[attr])
+            image_meta[attr] = timeutils.parse_isotime(image_meta[attr])
     return image_meta
 
 
-def _parse_glance_iso8601_timestamp(timestamp):
-    """Parse a subset of iso8601 timestamps into datetime objects."""
-    iso_formats = ['%Y-%m-%dT%H:%M:%S.%f', '%Y-%m-%dT%H:%M:%S']
-
-    for iso_format in iso_formats:
-        try:
-            return timeutils.parse_strtime(timestamp, iso_format)
-        except ValueError:
-            pass
-
-    raise ValueError(_('%(timestamp)s does not follow any of the '
-                       'signatures: %(iso_formats)s') % locals())
-
-
 # NOTE(bcwaldon): used to store non-string data in glance metadata
 def _json_loads(properties, attr):
     prop = properties[attr]
diff --git a/nova/tests/image/test_glance.py b/nova/tests/image/test_glance.py
index 4616f0949..4d866bb7b 100644
--- a/nova/tests/image/test_glance.py
+++ b/nova/tests/image/test_glance.py
@@ -88,7 +88,13 @@ class TestGlanceImageService(test.TestCase):
     """
     NOW_GLANCE_OLD_FORMAT = "2010-10-11T10:30:22"
     NOW_GLANCE_FORMAT = "2010-10-11T10:30:22.000000"
-    NOW_DATETIME = datetime.datetime(2010, 10, 11, 10, 30, 22)
+
+    class tzinfo(datetime.tzinfo):
+        @staticmethod
+        def utcoffset(*args, **kwargs):
+            return datetime.timedelta()
+
+    NOW_DATETIME = datetime.datetime(2010, 10, 11, 10, 30, 22, tzinfo=tzinfo())
 
     def setUp(self):
         super(TestGlanceImageService, self).setUp()