648ab82a4b
Agents supporting the guaranteed minimum bandwidth feature need to share their resource view with neutron-server and in turn with Placement too. The resource information is synchronized to neutron-server via the periodic agent heartbeat therefore transient synchronization errors are fixed by the next heartbeat. But synchronization to Placement is not done periodically, but on a (mostly) on demand basis. Therefore to fix transient errors of the synchronization to Placement we must remember the success/failure of the last synchronization attempt. This change implements the extension 'agent-resources-synced' and therefore extends the agent db model and object with a new attribute: 'resources_synced'. This attribute in only meant to be updated internally. But it can be read via the API for debugging purposes. APIImpact: The agent resource has a new attribute: resources_synced. Change-Id: I757d659cea63c8172ca3618d1f581d10236f5e71 Depends-On: https://review.openstack.org/626210 Partial-Bug: #1578989 See-Also: https://review.openstack.org/502306 (nova spec) See-Also: https://review.openstack.org/508149 (neutron spec)
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