Adds support to the ec2 api for filtering describe volumes by volume_ids.

1 files changed, 4 insertions, 2 deletions

diff --git a/nova/api/ec2/cloud.py b/nova/api/ec2/cloud.py
index 05f8c3d0b..ebb13aedc 100644
--- a/nova/api/ec2/cloud.py
+++ b/nova/api/ec2/cloud.py
@@ -450,13 +450,15 @@ class CloudController(object):
                 "Timestamp": now,
                 "output": base64.b64encode(output)}
 
-    def describe_volumes(self, context, **kwargs):
+    def describe_volumes(self, context, volume_id=None, **kwargs):
         if context.user.is_admin():
             volumes = db.volume_get_all(context)
         else:
             volumes = db.volume_get_all_by_project(context, context.project_id)
 
-        volumes = [self._format_volume(context, v) for v in volumes]
+        # NOTE(vish): volume_id is an optional list of volume ids to filter by.
+        volumes = [self._format_volume(context, v) for v in volumes
+                   if volume_id is None or v['ec2_id'] in volume_id]
 
         return {'volumeSet': volumes}