Created exceptions for accepting in OSAPI, and handled them appropriately.

1 files changed, 3 insertions, 6 deletions

diff --git a/nova/compute/api.py b/nova/compute/api.py
index 8f7b3c3ef..9e4841e64 100644
--- a/nova/compute/api.py
+++ b/nova/compute/api.py
@@ -940,18 +940,15 @@ class API(base.Base):
         LOG.debug(_("Old instance type %(current_instance_type_name)s, "
                 " new instance type %(new_instance_type_name)s") % locals())
         if not new_instance_type:
-            raise exception.ApiError(_("Requested flavor %(flavor_id)d "
-                    "does not exist") % locals())
+            raise exception.FlavorDoesNotExist(flavor_id=flavor_id)
 
         current_memory_mb = current_instance_type['memory_mb']
         new_memory_mb = new_instance_type['memory_mb']
         if current_memory_mb > new_memory_mb:
-            raise exception.ApiError(_("Invalid flavor: cannot downsize"
-                    "instances"))
+            raise exception.CannotResizeToSmallerSize()
 
         if (current_memory_mb == new_memory_mb) and flavor_id:
-            raise exception.ApiError(_("Invalid flavor: cannot use"
-                    "the same flavor. "))
+            raise exception.CannotResizeToSameSize()
 
         instance_ref = self._get_instance(context, instance_id, 'resize')
         self._cast_scheduler_message(context,