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[Salvatore Orlando <1430519@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Resource registration for Quota enforcement and management is performed
by the quota engine [1].

However the task of verifying whether a resource is registered is left
to the drivers [2]. This is conceptually wrong, and it also has the not
so nice effect that the engine must pass registered resources to the
driver as a parameter in limit_check.

[1] http://git.openstack.org/cgit/openstack/neutron/tree/neutron/quota.py#n238
[2] http://git.openstack.org/cgit/openstack/neutron/tree/neutron/db/quota_db.py#n115

This was discovered during the implementation of a reservation system
within the quota engine. The bug, albeit not critical, grants for a
standalone patch not squashed into the commits for
https://blueprints.launchpad.net/neutron/+spec/better-quotas

** Affects: neutron
     Importance: Medium
     Assignee: Salvatore Orlando (salvatore-orlando)
         Status: New


** Tags: quota

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https://bugs.launchpad.net/bugs/1430519

Title:
  Quota drivers should not throw QuotaResourceUknown

Status in OpenStack Neutron (virtual network service):
  New

Bug description:
  Resource registration for Quota enforcement and management is
  performed by the quota engine [1].

  However the task of verifying whether a resource is registered is left
  to the drivers [2]. This is conceptually wrong, and it also has the
  not so nice effect that the engine must pass registered resources to
  the driver as a parameter in limit_check.

  [1] http://git.openstack.org/cgit/openstack/neutron/tree/neutron/quota.py#n238
  [2] http://git.openstack.org/cgit/openstack/neutron/tree/neutron/db/quota_db.py#n115

  This was discovered during the implementation of a reservation system
  within the quota engine. The bug, albeit not critical, grants for a
  standalone patch not squashed into the commits for
  https://blueprints.launchpad.net/neutron/+spec/better-quotas

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