Fix bug 891738

Compute image size for the registry in the case where none is specified.

(cherry picked from commit 1f28b6c)

Change-Id: Ic21adf4865d0f481db9bd362cfaeeebd0942c974

Authors

@@ -23,6 +23,7 @@ Mark McLoughlin <markmc@redhat.com>
 Matt Dietz <matt.dietz@rackspace.com>
 Mike Lundy <mike@pistoncloud.com>
 Monty Taylor <mordred@inaugust.com>
+Paul Bourke <paul-david.bourke@hp.com>
 Rick Clark <rick@openstack.org>
 Rick Harris <rconradharris@gmail.com>
 Russell Bryant <rbryant@redhat.com>

glance/store/swift.py

@@ -339,6 +339,13 @@ def add(self, image_id, image_file, image_size):
                 # best...
                 obj_etag = swift_conn.put_object(self.container, obj_name,
                                                  image_file)
+
+                if image_size == 0:
+                    resp_headers = swift_conn.head_object(self.container,
+                                                          obj_name)
+                    # header keys are lowercased by Swift
+                    if 'content-length' in resp_headers:
+                        image_size = int(resp_headers['content-length'])
             else:
                 # Write the image into Swift in chunks. We cannot
                 # stream chunks of the webob.Request.body_file, unfortunately,