def ctl_add_hypervisor(self, image_name, hypervisor):
metadata = None
if image_name in self._metadata_dict:
# the image is in use on this node.
metadata = self._metadata_dict[image_name]
else:
# XXX need to check if no one is using this image.
metadata_raw = self._get_metadata(image_name)
if metadata_raw is None:
return errno.ENOENT
metadata = UKAIMetadata(image_name, self._config, metadata_raw)
metadata.add_hypervisor(hypervisor)
return 0
