merged trunk

17 files changed, 162 insertions, 107 deletions

diff --git a/nova/api/openstack/accounts.py b/nova/api/openstack/accounts.py
index e3201b14f..a13a758ab 100644
--- a/nova/api/openstack/accounts.py
+++ b/nova/api/openstack/accounts.py
@@ -47,10 +47,10 @@ class Controller(object):
             raise exception.AdminRequired()
 
     def index(self, req):
-        raise faults.Fault(webob.exc.HTTPNotImplemented())
+        raise webob.exc.HTTPNotImplemented()
 
     def detail(self, req):
-        raise faults.Fault(webob.exc.HTTPNotImplemented())
+        raise webob.exc.HTTPNotImplemented()
 
     def show(self, req, id):
         """Return data about the given account id"""
@@ -65,7 +65,7 @@ class Controller(object):
     def create(self, req, body):
         """We use update with create-or-update semantics
            because the id comes from an external source"""
-        raise faults.Fault(webob.exc.HTTPNotImplemented())
+        raise webob.exc.HTTPNotImplemented()
 
     def update(self, req, id, body):
         """This is really create or update."""
diff --git a/nova/api/openstack/backup_schedules.py b/nova/api/openstack/backup_schedules.py
index 3e95aedf3..7ff0d999e 100644
--- a/nova/api/openstack/backup_schedules.py
+++ b/nova/api/openstack/backup_schedules.py
@@ -19,7 +19,6 @@ import time
 
 from webob import exc
 
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 
 
@@ -36,20 +35,20 @@ class Controller(object):
 
     def index(self, req, server_id, **kwargs):
         """ Returns the list of backup schedules for a given instance """
-        return faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def show(self, req, server_id, id, **kwargs):
         """ Returns a single backup schedule for a given instance """
-        return faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def create(self, req, server_id, **kwargs):
         """ No actual update method required, since the existing API allows
         both create and update through a POST """
-        return faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def delete(self, req, server_id, id, **kwargs):
         """ Deletes an existing backup schedule """
-        return faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
 
 def create_resource():
diff --git a/nova/api/openstack/common.py b/nova/api/openstack/common.py
index 8e12ce0c0..57031ebf1 100644
--- a/nova/api/openstack/common.py
+++ b/nova/api/openstack/common.py
@@ -53,10 +53,10 @@ def get_pagination_params(request):
             params[param] = int(request.GET[param])
         except ValueError:
             msg = _('%s param must be an integer') % param
-            raise webob.exc.HTTPBadRequest(msg)
+            raise webob.exc.HTTPBadRequest(explanation=msg)
         if params[param] < 0:
             msg = _('%s param must be positive') % param
-            raise webob.exc.HTTPBadRequest(msg)
+            raise webob.exc.HTTPBadRequest(explanation=msg)
 
     return params
 
@@ -77,18 +77,22 @@ def limited(items, request, max_limit=FLAGS.osapi_max_limit):
     try:
         offset = int(request.GET.get('offset', 0))
     except ValueError:
-        raise webob.exc.HTTPBadRequest(_('offset param must be an integer'))
+        msg = _('offset param must be an integer')
+        raise webob.exc.HTTPBadRequest(explanation=msg)
 
     try:
         limit = int(request.GET.get('limit', max_limit))
     except ValueError:
-        raise webob.exc.HTTPBadRequest(_('limit param must be an integer'))
+        msg = _('limit param must be an integer')
+        raise webob.exc.HTTPBadRequest(explanation=msg)
 
     if limit < 0:
-        raise webob.exc.HTTPBadRequest(_('limit param must be positive'))
+        msg = _('limit param must be positive')
+        raise webob.exc.HTTPBadRequest(explanation=msg)
 
     if offset < 0:
-        raise webob.exc.HTTPBadRequest(_('offset param must be positive'))
+        msg = _('offset param must be positive')
+        raise webob.exc.HTTPBadRequest(explanation=msg)
 
     limit = min(max_limit, limit or max_limit)
     range_end = offset + limit
@@ -111,7 +115,8 @@ def limited_by_marker(items, request, max_limit=FLAGS.osapi_max_limit):
                 start_index = i + 1
                 break
         if start_index < 0:
-            raise webob.exc.HTTPBadRequest(_('marker [%s] not found' % marker))
+            msg = _('marker [%s] not found') % marker
+            raise webob.exc.HTTPBadRequest(explanation=msg)
     range_end = start_index + limit
     return items[start_index:range_end]
 
diff --git a/nova/api/openstack/consoles.py b/nova/api/openstack/consoles.py
index 9c7b37f0d..d2655acfa 100644
--- a/nova/api/openstack/consoles.py
+++ b/nova/api/openstack/consoles.py
@@ -20,7 +20,6 @@ import webob
 
 from nova import console
 from nova import exception
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 
 
@@ -72,12 +71,12 @@ class Controller(object):
                                         int(server_id),
                                         int(id))
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
         return _translate_detail_keys(console)
 
     def update(self, req, server_id, id):
         """You can't update a console"""
-        raise faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def delete(self, req, server_id, id):
         """Deletes a console"""
@@ -86,7 +85,7 @@ class Controller(object):
                                             int(server_id),
                                             int(id))
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
         return webob.Response(status_int=202)
 
 
diff --git a/nova/api/openstack/create_instance_helper.py b/nova/api/openstack/create_instance_helper.py
index 2654e3c40..7249f1261 100644
--- a/nova/api/openstack/create_instance_helper.py
+++ b/nova/api/openstack/create_instance_helper.py
@@ -28,7 +28,6 @@ from nova import quota
 from nova import utils
 
 from nova.compute import instance_types
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 from nova.auth import manager as auth_manager
 
@@ -70,7 +69,7 @@ class CreateInstanceHelper(object):
         return type from this method is left to the caller.
         """
         if not body:
-            raise faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
 
         context = req.environ['nova.context']
 
@@ -94,7 +93,7 @@ class CreateInstanceHelper(object):
         except Exception, e:
             msg = _("Cannot find requested image %(image_href)s: %(e)s" %
                                                                     locals())
-            raise faults.Fault(exc.HTTPBadRequest(explanation=msg))
+            raise exc.HTTPBadRequest(explanation=msg)
 
         personality = body['server'].get('personality')
 
@@ -102,7 +101,11 @@ class CreateInstanceHelper(object):
         if personality:
             injected_files = self._get_injected_files(personality)
 
-        flavor_id = self.controller._flavor_id_from_req_data(body)
+        try:
+            flavor_id = self.controller._flavor_id_from_req_data(body)
+        except ValueError as error:
+            msg = _("Invalid flavorRef provided.")
+            raise exc.HTTPBadRequest(explanation=msg)
 
         if not 'name' in body['server']:
             msg = _("Server name is not defined")
@@ -153,8 +156,10 @@ class CreateInstanceHelper(object):
             self._handle_quota_error(error)
         except exception.ImageNotFound as error:
             msg = _("Can not find requested image")
-            raise faults.Fault(exc.HTTPBadRequest(explanation=msg))
-
+            raise exc.HTTPBadRequest(explanation=msg)
+        except exception.FlavorNotFound as error:
+            msg = _("Invalid flavorRef provided.")
+            raise exc.HTTPBadRequest(explanation=msg)
         # Let the caller deal with unhandled exceptions.
 
     def _handle_quota_error(self, error):
diff --git a/nova/api/openstack/image_metadata.py b/nova/api/openstack/image_metadata.py
index 4f33844fa..c0fc8c09b 100644
--- a/nova/api/openstack/image_metadata.py
+++ b/nova/api/openstack/image_metadata.py
@@ -22,7 +22,6 @@ from nova import flags
 from nova import image
 from nova import quota
 from nova import utils
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 
 
@@ -62,7 +61,7 @@ class Controller(object):
         if id in metadata:
             return {'meta': {id: metadata[id]}}
         else:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
 
     def create(self, req, image_id, body):
         context = req.environ['nova.context']
@@ -105,7 +104,7 @@ class Controller(object):
         img = self.image_service.show(context, image_id)
         metadata = self._get_metadata(context, image_id)
         if not id in metadata:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
         metadata.pop(id)
         img['properties'] = metadata
         self.image_service.update(context, image_id, img, None)
diff --git a/nova/api/openstack/images.py b/nova/api/openstack/images.py
index f82b98a38..30e4fd389 100644
--- a/nova/api/openstack/images.py
+++ b/nova/api/openstack/images.py
@@ -25,7 +25,6 @@ from nova import flags
 import nova.image
 from nova import log
 from nova.api.openstack import common
-from nova.api.openstack import faults
 from nova.api.openstack import image_metadata
 from nova.api.openstack import servers
 from nova.api.openstack.views import images as images_view
@@ -85,7 +84,7 @@ class Controller(object):
             image = self._image_service.show(context, id)
         except (exception.NotFound, exception.InvalidImageRef):
             explanation = _("Image not found.")
-            raise faults.Fault(webob.exc.HTTPNotFound(explanation=explanation))
+            raise webob.exc.HTTPNotFound(explanation=explanation)
 
         return dict(image=self.get_builder(req).build(image, detail=True))
 
diff --git a/nova/api/openstack/ips.py b/nova/api/openstack/ips.py
index 1ebfdb831..2996b032d 100644
--- a/nova/api/openstack/ips.py
+++ b/nova/api/openstack/ips.py
@@ -20,7 +20,6 @@ import time
 from webob import exc
 
 import nova
-from nova.api.openstack import faults
 import nova.api.openstack.views.addresses
 from nova.api.openstack import wsgi
 from nova import db
@@ -37,14 +36,14 @@ class Controller(object):
             instance = self.compute_api.get(
                 req.environ['nova.context'], server_id)
         except nova.exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
         return instance
 
     def create(self, req, server_id, body):
-        return faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def delete(self, req, server_id, id):
-        return faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
 
 class ControllerV10(Controller):
@@ -63,7 +62,7 @@ class ControllerV10(Controller):
             view = builder.build_public_parts(instance)
         else:
             msg = _("Only private and public networks available")
-            return faults.Fault(exc.HTTPNotFound(explanation=msg))
+            raise exc.HTTPNotFound(explanation=msg)
 
         return {id: view}
 
@@ -86,7 +85,7 @@ class ControllerV11(Controller):
 
         if network is None:
             msg = _("Instance is not a member of specified network")
-            return faults.Fault(exc.HTTPNotFound(explanation=msg))
+            raise exc.HTTPNotFound(explanation=msg)
 
         return network
 
diff --git a/nova/api/openstack/limits.py b/nova/api/openstack/limits.py
index bc76547d8..86afa3b62 100644
--- a/nova/api/openstack/limits.py
+++ b/nova/api/openstack/limits.py
@@ -25,6 +25,7 @@ import re
 import time
 import urllib
 import webob.exc
+from xml.dom import minidom
 
 from collections import defaultdict
 
@@ -76,6 +77,58 @@ class LimitsControllerV11(LimitsController):
         return limits_views.ViewBuilderV11()
 
 
+class LimitsXMLSerializer(wsgi.XMLDictSerializer):
+
+    xmlns = wsgi.XMLNS_V11
+
+    def __init__(self):
+        pass
+
+    def _create_rates_node(self, xml_doc, rates):
+        rates_node = xml_doc.createElement('rates')
+        for rate in rates:
+            rate_node = xml_doc.createElement('rate')
+            rate_node.setAttribute('uri', rate['uri'])
+            rate_node.setAttribute('regex', rate['regex'])
+
+            for limit in rate['limit']:
+                limit_node = xml_doc.createElement('limit')
+                limit_node.setAttribute('value', str(limit['value']))
+                limit_node.setAttribute('verb', limit['verb'])
+                limit_node.setAttribute('remaining', str(limit['remaining']))
+                limit_node.setAttribute('unit', limit['unit'])
+                limit_node.setAttribute('next-available',
+                                        str(limit['next-available']))
+                rate_node.appendChild(limit_node)
+
+            rates_node.appendChild(rate_node)
+        return rates_node
+
+    def _create_absolute_node(self, xml_doc, absolutes):
+        absolute_node = xml_doc.createElement('absolute')
+        for key, value in absolutes.iteritems():
+            limit_node = xml_doc.createElement('limit')
+            limit_node.setAttribute('name', key)
+            limit_node.setAttribute('value', str(value))
+            absolute_node.appendChild(limit_node)
+        return absolute_node
+
+    def _limits_to_xml(self, xml_doc, limits):
+        limits_node = xml_doc.createElement('limits')
+        rates_node = self._create_rates_node(xml_doc, limits['rate'])
+        limits_node.appendChild(rates_node)
+
+        absolute_node = self._create_absolute_node(xml_doc, limits['absolute'])
+        limits_node.appendChild(absolute_node)
+
+        return limits_node
+
+    def index(self, limits_dict):
+        xml_doc = minidom.Document()
+        node = self._limits_to_xml(xml_doc, limits_dict['limits'])
+        return self.to_xml_string(node, False)
+
+
 def create_resource(version='1.0'):
     controller = {
         '1.0': LimitsControllerV10,
@@ -97,9 +150,13 @@ def create_resource(version='1.0'):
         },
     }
 
+    xml_serializer = {
+        '1.0': wsgi.XMLDictSerializer(xmlns=xmlns, metadata=metadata),
+        '1.1': LimitsXMLSerializer(),
+    }[version]
+
     body_serializers = {
-        'application/xml': wsgi.XMLDictSerializer(xmlns=xmlns,
-                                                  metadata=metadata),
+        'application/xml': xml_serializer,
     }
 
     serializer = wsgi.ResponseSerializer(body_serializers)
diff --git a/nova/api/openstack/server_metadata.py b/nova/api/openstack/server_metadata.py
index 3b9169f81..d4f42bbf5 100644
--- a/nova/api/openstack/server_metadata.py
+++ b/nova/api/openstack/server_metadata.py
@@ -18,7 +18,6 @@
 from webob import exc
 
 from nova import compute
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 from nova import exception
 from nova import quota
diff --git a/nova/api/openstack/servers.py b/nova/api/openstack/servers.py
index 3b3d0685d..7bef1d9b2 100644
--- a/nova/api/openstack/servers.py
+++ b/nova/api/openstack/servers.py
@@ -27,7 +27,6 @@ from nova import log as logging
 from nova import utils
 from nova.api.openstack import common
 from nova.api.openstack import create_instance_helper as helper
-from nova.api.openstack import faults
 import nova.api.openstack.views.addresses
 import nova.api.openstack.views.flavors
 import nova.api.openstack.views.images
@@ -102,17 +101,14 @@ class Controller(object):
                 req.environ['nova.context'], id)
             return self._build_view(req, instance, is_detail=True)
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
 
     def create(self, req, body):
         """ Creates a new server for a given user """
         extra_values = None
         result = None
-        try:
-            extra_values, instances = self.helper.create_instance(
-                    req, body, self.compute_api.create)
-        except faults.Fault, f:
-            return f
+        extra_values, instances = self.helper.create_instance(
+                req, body, self.compute_api.create)
 
         # We can only return 1 instance via the API, if we happen to
         # build more than one...  instances is a list, so we'll just
@@ -132,7 +128,7 @@ class Controller(object):
             raise exc.HTTPUnprocessableEntity()
 
         if not body:
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
 
         ctxt = req.environ['nova.context']
         update_dict = {}
@@ -147,7 +143,7 @@ class Controller(object):
         try:
             self.compute_api.update(ctxt, id, **update_dict)
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
 
         return exc.HTTPNoContent()
 
@@ -171,7 +167,7 @@ class Controller(object):
         for key in actions.keys():
             if key in body:
                 return actions[key](body, req, id)
-        return faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def _action_change_password(self, input_dict, req, id):
         return exc.HTTPNotImplemented()
@@ -181,7 +177,7 @@ class Controller(object):
             self.compute_api.confirm_resize(req.environ['nova.context'], id)
         except Exception, e:
             LOG.exception(_("Error in confirm-resize %s"), e)
-            return faults.Fault(exc.HTTPBadRequest())
+            raise exc.HTTPBadRequest()
         return exc.HTTPNoContent()
 
     def _action_revert_resize(self, input_dict, req, id):
@@ -189,7 +185,7 @@ class Controller(object):
             self.compute_api.revert_resize(req.environ['nova.context'], id)
         except Exception, e:
             LOG.exception(_("Error in revert-resize %s"), e)
-            return faults.Fault(exc.HTTPBadRequest())
+            raise exc.HTTPBadRequest()
         return webob.Response(status_int=202)
 
     def _action_resize(self, input_dict, req, id):
@@ -200,14 +196,14 @@ class Controller(object):
             reboot_type = input_dict['reboot']['type']
         else:
             LOG.exception(_("Missing argument 'type' for reboot"))
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         try:
             # TODO(gundlach): pass reboot_type, support soft reboot in
             # virt driver
             self.compute_api.reboot(req.environ['nova.context'], id)
         except Exception, e:
             LOG.exception(_("Error in reboot %s"), e)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     def _action_migrate(self, input_dict, req, id):
@@ -215,7 +211,7 @@ class Controller(object):
             self.compute_api.resize(req.environ['nova.context'], id)
         except Exception, e:
             LOG.exception(_("Error in migrate %s"), e)
-            return faults.Fault(exc.HTTPBadRequest())
+            raise exc.HTTPBadRequest()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -231,7 +227,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("Compute.api::lock %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -247,7 +243,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("Compute.api::unlock %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -262,7 +258,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("Compute.api::get_lock %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -277,7 +273,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("Compute.api::reset_network %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -292,7 +288,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("Compute.api::inject_network_info %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -304,7 +300,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("Compute.api::pause %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -316,7 +312,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("Compute.api::unpause %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -328,7 +324,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("compute.api::suspend %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -340,7 +336,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("compute.api::resume %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -352,7 +348,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("compute.api::rescue %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -364,7 +360,7 @@ class Controller(object):
         except:
             readable = traceback.format_exc()
             LOG.exception(_("compute.api::unrescue %s"), readable)
-            return faults.Fault(exc.HTTPUnprocessableEntity())
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -374,7 +370,7 @@ class Controller(object):
             self.compute_api.get_ajax_console(req.environ['nova.context'],
                 int(id))
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -384,7 +380,7 @@ class Controller(object):
             self.compute_api.get_vnc_console(req.environ['nova.context'],
                                              int(id))
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
         return webob.Response(status_int=202)
 
     @scheduler_api.redirect_handler
@@ -416,7 +412,7 @@ class ControllerV10(Controller):
         try:
             self.compute_api.delete(req.environ['nova.context'], id)
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
         return webob.Response(status_int=202)
 
     def _image_ref_from_req_data(self, data):
@@ -440,17 +436,13 @@ class ControllerV10(Controller):
 
     def _action_resize(self, input_dict, req, id):
         """ Resizes a given instance to the flavor size requested """
-        try:
-            if 'resize' in input_dict and 'flavorId' in input_dict['resize']:
-                flavor_id = input_dict['resize']['flavorId']
-                self.compute_api.resize(req.environ['nova.context'], id,
-                        flavor_id)
-            else:
-                LOG.exception(_("Missing 'flavorId' argument for resize"))
-                return faults.Fault(exc.HTTPUnprocessableEntity())
-        except Exception, e:
-            LOG.exception(_("Error in resize %s"), e)
-            return faults.Fault(exc.HTTPBadRequest())
+        if 'resize' in input_dict and 'flavorId' in input_dict['resize']:
+            flavor_id = input_dict['resize']['flavorId']
+            self.compute_api.resize(req.environ['nova.context'], id,
+                    flavor_id)
+        else:
+            LOG.exception(_("Missing 'flavorId' argument for resize"))
+            raise exc.HTTPUnprocessableEntity()
         return webob.Response(status_int=202)
 
     def _action_rebuild(self, info, request, instance_id):
@@ -462,14 +454,14 @@ class ControllerV10(Controller):
         except (KeyError, TypeError):
             msg = _("Could not parse imageId from request.")
             LOG.debug(msg)
-            return faults.Fault(exc.HTTPBadRequest(explanation=msg))
+            raise exc.HTTPBadRequest(explanation=msg)
 
         try:
             self.compute_api.rebuild(context, instance_id, image_id)
         except exception.BuildInProgress:
             msg = _("Instance %d is currently being rebuilt.") % instance_id
             LOG.debug(msg)
-            return faults.Fault(exc.HTTPConflict(explanation=msg))
+            raise exc.HTTPConflict(explanation=msg)
 
         return webob.Response(status_int=202)
 
@@ -486,7 +478,7 @@ class ControllerV11(Controller):
         try:
             self.compute_api.delete(req.environ['nova.context'], id)
         except exception.NotFound:
-            return faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
 
     def _image_ref_from_req_data(self, data):
         return data['server']['imageRef']
@@ -530,7 +522,7 @@ class ControllerV11(Controller):
         except AttributeError as ex:
             msg = _("Unable to parse metadata key/value pairs.")
             LOG.debug(msg)
-            raise faults.Fault(exc.HTTPBadRequest(explanation=msg))
+            raise exc.HTTPBadRequest(explanation=msg)
 
     def _decode_personalities(self, personalities):
         """Decode the Base64-encoded personalities."""
@@ -541,14 +533,14 @@ class ControllerV11(Controller):
             except (KeyError, TypeError):
                 msg = _("Unable to parse personality path/contents.")
                 LOG.info(msg)
-                raise faults.Fault(exc.HTTPBadRequest(explanation=msg))
+                raise exc.HTTPBadRequest(explanation=msg)
 
             try:
                 personality["contents"] = base64.b64decode(contents)
             except TypeError:
                 msg = _("Personality content could not be Base64 decoded.")
                 LOG.info(msg)
-                raise faults.Fault(exc.HTTPBadRequest(explanation=msg))
+                raise exc.HTTPBadRequest(explanation=msg)
 
     def _action_resize(self, input_dict, req, id):
         """ Resizes a given instance to the flavor size requested """
@@ -560,10 +552,10 @@ class ControllerV11(Controller):
                         flavor_id)
             else:
                 LOG.exception(_("Missing 'flavorRef' argument for resize"))
-                return faults.Fault(exc.HTTPUnprocessableEntity())
+                raise exc.HTTPUnprocessableEntity()
         except Exception, e:
             LOG.exception(_("Error in resize %s"), e)
-            return faults.Fault(exc.HTTPBadRequest())
+            raise exc.HTTPBadRequest()
         return webob.Response(status_int=202)
 
     def _action_rebuild(self, info, request, instance_id):
@@ -575,7 +567,7 @@ class ControllerV11(Controller):
         except (KeyError, TypeError):
             msg = _("Could not parse imageRef from request.")
             LOG.debug(msg)
-            return faults.Fault(exc.HTTPBadRequest(explanation=msg))
+            raise exc.HTTPBadRequest(explanation=msg)
 
         personalities = info["rebuild"].get("personality", [])
         metadata = info["rebuild"].get("metadata")
@@ -591,7 +583,7 @@ class ControllerV11(Controller):
         except exception.BuildInProgress:
             msg = _("Instance %d is currently being rebuilt.") % instance_id
             LOG.debug(msg)
-            return faults.Fault(exc.HTTPConflict(explanation=msg))
+            raise exc.HTTPConflict(explanation=msg)
 
         return webob.Response(status_int=202)
 
diff --git a/nova/api/openstack/shared_ip_groups.py b/nova/api/openstack/shared_ip_groups.py
index cf2ddbabb..54d0a8334 100644
--- a/nova/api/openstack/shared_ip_groups.py
+++ b/nova/api/openstack/shared_ip_groups.py
@@ -17,7 +17,6 @@
 
 from webob import exc
 
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 
 
@@ -26,27 +25,27 @@ class Controller(object):
 
     def index(self, req, **kwargs):
         """ Returns a list of Shared IP Groups for the user """
-        raise faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def show(self, req, id, **kwargs):
         """ Shows in-depth information on a specific Shared IP Group """
-        raise faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def update(self, req, id, **kwargs):
         """ You can't update a Shared IP Group """
-        raise faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def delete(self, req, id, **kwargs):
         """ Deletes a Shared IP Group """
-        raise faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def detail(self, req, **kwargs):
         """ Returns a complete list of Shared IP Groups """
-        raise faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
     def create(self, req, **kwargs):
         """ Creates a new Shared IP group """
-        raise faults.Fault(exc.HTTPNotImplemented())
+        raise exc.HTTPNotImplemented()
 
 
 def create_resource():
diff --git a/nova/api/openstack/users.py b/nova/api/openstack/users.py
index 6ae1eaf2a..8dd72d559 100644
--- a/nova/api/openstack/users.py
+++ b/nova/api/openstack/users.py
@@ -19,7 +19,6 @@ from nova import exception
 from nova import flags
 from nova import log as logging
 from nova.api.openstack import common
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 from nova.auth import manager
 
@@ -69,7 +68,7 @@ class Controller(object):
             user = None
 
         if user is None:
-            raise faults.Fault(exc.HTTPNotFound())
+            raise exc.HTTPNotFound()
 
         return dict(user=_translate_keys(user))
 
diff --git a/nova/api/openstack/views/limits.py b/nova/api/openstack/views/limits.py
index 934b4921a..f603d7cb4 100644
--- a/nova/api/openstack/views/limits.py
+++ b/nova/api/openstack/views/limits.py
@@ -15,9 +15,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import datetime
 import time
 
 from nova.api.openstack import common
+from nova import utils
 
 
 class ViewBuilder(object):
@@ -113,10 +115,12 @@ class ViewBuilderV11(ViewBuilder):
         return limits
 
     def _build_rate_limit(self, rate_limit):
+        next_avail = \
+            datetime.datetime.utcfromtimestamp(rate_limit["resetTime"])
         return {
             "verb": rate_limit["verb"],
             "value": rate_limit["value"],
             "remaining": int(rate_limit["remaining"]),
             "unit": rate_limit["unit"],
-            "next-available": rate_limit["resetTime"],
+            "next-available": utils.isotime(at=next_avail),
         }
diff --git a/nova/api/openstack/views/servers.py b/nova/api/openstack/views/servers.py
index ab7e8da61..7131db088 100644
--- a/nova/api/openstack/views/servers.py
+++ b/nova/api/openstack/views/servers.py
@@ -82,7 +82,7 @@ class ViewBuilder(object):
         ctxt = nova.context.get_admin_context()
         compute_api = nova.compute.API()
 
-        if compute_api.has_finished_migration(ctxt, inst['id']):
+        if compute_api.has_finished_migration(ctxt, inst['uuid']):
             inst_dict['status'] = 'RESIZE-CONFIRM'
 
         # Return the metadata as a dictionary
diff --git a/nova/api/openstack/wsgi.py b/nova/api/openstack/wsgi.py
index 9df6fd058..1e5a5143d 100644
--- a/nova/api/openstack/wsgi.py
+++ b/nova/api/openstack/wsgi.py
@@ -448,7 +448,11 @@ class Resource(wsgi.Application):
             msg = _("Malformed request body")
             return faults.Fault(webob.exc.HTTPBadRequest(explanation=msg))
 
-        action_result = self.dispatch(request, action, args)
+        try:
+            action_result = self.dispatch(request, action, args)
+        except webob.exc.HTTPException as ex:
+            LOG.info(_("HTTP exception thrown: %s"), unicode(ex))
+            action_result = faults.Fault(ex)
 
         #TODO(bcwaldon): find a more elegant way to pass through non-dict types
         if type(action_result) is dict or action_result is None:
diff --git a/nova/api/openstack/zones.py b/nova/api/openstack/zones.py
index 2e02ec380..f7fd87bcd 100644
--- a/nova/api/openstack/zones.py
+++ b/nova/api/openstack/zones.py
@@ -27,7 +27,6 @@ from nova.scheduler import api
 
 from nova.api.openstack import create_instance_helper as helper
 from nova.api.openstack import common
-from nova.api.openstack import faults
 from nova.api.openstack import wsgi
 
 
@@ -127,11 +126,8 @@ class Controller(object):
         Returns a reservation ID (a UUID).
         """
         result = None
-        try:
-            extra_values, result = self.helper.create_instance(req, body,
-                                    self.compute_api.create_all_at_once)
-        except faults.Fault, f:
-            return f
+        extra_values, result = self.helper.create_instance(req, body,
+                                self.compute_api.create_all_at_once)
 
         reservation_id = result
         return {'reservation_id': reservation_id}