Open Stack

I was looking at https://review.openstack.org/#/c/73274/1 which makes it 
configurable whether a brute-force cleanup of resources is done after 
success. This got my wondering how this should really be done. As admin, 
there are some resources that can be cleaned and some that I don't  know 
how. For example, as admin you can list all servers and delete them with 
the --all-tenants flag. But for floating ips I don't see a way to list 
all of them even as admin through the apis. Is there a way that an admin 
can, through the api, locate all resources used by a particular tenant?

  -David