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[OpenStack Infra <1998108@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/c/openstack/neutron/+/865857
Committed: https://opendev.org/openstack/neutron/commit/49eab7d308b598e4c4966110d6aa61cd091cc3f6
Submitter: "Zuul (22348)"
Branch:    master

commit 49eab7d308b598e4c4966110d6aa61cd091cc3f6
Author: Rodolfo Alonso Hernandez <ralonsoh@xxxxxxxxxx>
Date:   Thu Nov 17 21:14:40 2022 +0100

    Move registration "ChassisBandwidthConfigEvent" to OvnSbIdl init
    
    The "ChassisBandwidthConfigEvent" event registration is now done in the
    "OvnSbIdl" class initialization. That ensures this event is registered
    in a worker thread.
    
    If the event is called before the "OVNMechanismDriver"'s "OVNClient"
    has been instantiated, the event is skipped. When the OVN placement
    extension is loaded, all chassis configurations are read and loaded,
    thus any previous event is not relevant.
    
    This patch also adds a "match_fn" check to
    "ChassisBandwidthConfigEvent". If during an update event, the bandwidth
    options are not modified, this class does not update the resource
    provider inventories.
    
    Closes-Bug: #1998108
    Related-Bug: #1578989
    Change-Id: I74883041c642b9498299ebf2b5bf885776e241e0


** Changed in: neutron
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1998108

Title:
  Move "ChassisBandwidthConfigEvent" registration to "OvnSbIdl" class
  initialization

Status in neutron:
  Fix Released

Bug description:
  The event "ChassisBandwidthConfigEvent", that is an OVN SB DB event,
  should be registered in the "OvnSbIdl" class initialization. This
  class is instantiated for the worker threads. Because we use the
  "OvnDbNotifyHandler", the event will be treated by just one single OVN
  Client at a time.

  If the placement extension is not loaded yet, the class will skip any
  event.

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