Can't create floatingip with specified uuid

[Stefan]

There are some cases in which we need to a rollback a delete floatingip action (e.g. some error in a specific L3 service implementation) and for that we basically require creating the old floatingip, including the uuid. The current L3_NAT_dbonly_mixin implementation generates the uuid every time create_floatingip is called so there's no way of re-creating a floatingip.

[Andreas Scheuring (andreas-scheuring)]

Hi Stefan, I would rather tackle the root causes that you described with "some error in a specific L3 service implementation". Can you elaborate more on that? Ideally you would directly open a bug for those issues providing the relevant information!

I'll set this to invalid. I'm not aware of any Neutron resource that allows specifying a UUID. And I don't see the use case. If you have a use case that is not related to buggy code, please elaborate here.

Thanks!

[Stefan (stefan-apostoaie)]

Our case is the following:
- we use a different component (controller) that handles the L3 requests and configures the compute nodes and routers and other components in the cloud
- our implementation for the L3 router plugin forwards the calls to our controller
- treating error cases for delete router, floatingip, etc calls in our L3 router plugin (e.g. the controller is unavailable for the moment, or some other error) involves doing a rollback (basically re-creating the exact same resource) to allow a retry in the future.
- the rollback works for router resource (it allows specifying a uuid on create router, see the l3_db.py in _create_router_db)
- the rollback for floatingips creates a different floatingip (different uuid) even if we specify the uuid.

I looked at other Neutron resources and creating network, port, router, and subnet with specified uuid is allowed. For floatingip this isn't allowed.

[Andreas Scheuring (andreas-scheuring)]

I'm sorry, I was just looking at the port object in the API doc - but there UUID is not listed. But it is listed in Networks. Seems like one can pass in a UUID for those resources, cool!

[Rodolfo Alonso (rodolfo-alonso-hernandez)]

Bug closed due to lack of activity, please feel free to reopen if needed.