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[Kevin Benton <1621345@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The current DHCP notifier only tells the DHCP agents things when
ports/subnets/networks are modified via the Neutron API. This is
problematic because service plugins may modify ports directly via the
core plugin API, which results in the agents not being notified unless
special care is taken to make modifications via utility functions that
emit API events[1]. This leaves too much room for subtle inconsistencies
between the data model and the DHCP agent. The DHCP notifier should just
subscribe directly to the callbacks for networks/subnets/ports.


1.
https://github.com/openstack/neutron/blob/dc6508aae2819f2b718785b4da2c11f30bdc3ffd/neutron/plugins/common/utils.py#L175-L183

** Affects: neutron
     Importance: Undecided
     Assignee: Kevin Benton (kevinbenton)
         Status: In Progress

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https://bugs.launchpad.net/bugs/1621345

Title:
  dhcp notifier should use core resource events

Status in neutron:
  In Progress

Bug description:
  The current DHCP notifier only tells the DHCP agents things when
  ports/subnets/networks are modified via the Neutron API. This is
  problematic because service plugins may modify ports directly via the
  core plugin API, which results in the agents not being notified unless
  special care is taken to make modifications via utility functions that
  emit API events[1]. This leaves too much room for subtle
  inconsistencies between the data model and the DHCP agent. The DHCP
  notifier should just subscribe directly to the callbacks for
  networks/subnets/ports.


  1.
  https://github.com/openstack/neutron/blob/dc6508aae2819f2b718785b4da2c11f30bdc3ffd/neutron/plugins/common/utils.py#L175-L183

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