yahoo-eng-team team mailing list archive

[Matthew Booth <mbooth@xxxxxxxxxx>]

Public bug reported:

2 simultaneous calls to DNSDomain.register_for_zone or
DNSDomain.register_for_project will race. The winner is undefined.
Consequently, the caller has no way of knowing if the DNSDomain is
appropriately registered following a call. register_for_zone or
register_for_project will not currently generate an error in this case.

I can think of 2 ways to resolve this:

1. Assert that only an unregistered domain can be registered. Attempting
to register a registered domain is an error. This would be a semantic
change to the existing APIs.

2. Create new APIs which additionally take the expected current
registration, and fail if it is not as expected. Deprecate the existing
APIs.

I favour the former.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1409024

Title:
  DNSDomain.register_for_zone races

Status in OpenStack Compute (Nova):
  New

Bug description:
  2 simultaneous calls to DNSDomain.register_for_zone or
  DNSDomain.register_for_project will race. The winner is undefined.
  Consequently, the caller has no way of knowing if the DNSDomain is
  appropriately registered following a call. register_for_zone or
  register_for_project will not currently generate an error in this
  case.

  I can think of 2 ways to resolve this:

  1. Assert that only an unregistered domain can be registered.
  Attempting to register a registered domain is an error. This would be
  a semantic change to the existing APIs.

  2. Create new APIs which additionally take the expected current
  registration, and fail if it is not as expected. Deprecate the
  existing APIs.

  I favour the former.

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