Public bug reported: Right now, the compute_nodes.metrics field is defined as a TEXT field and contains a straight JSON-ified string of the single-level dict of keys returned by the single monitor currently in the Nova tree: the CPU monitor.
https://review.openstack.org/#/c/180983/12/specs/liberty/approved/mem- bw.rst introduces a potential new memory bandwidth monitor class, and we should evolve the metrics field to be a versioned object field instead of the flat string field it currently is. We need to do the following: 1) Change the CPU monitor to return a nova.objects.CPUStats (or similar) 2) Change nova.objects.ComputeNode's metrics field from a String field to a nova.objects.VirtMetrics field, which will have as its only field an ObjectField('CPUStats') 3) Add data migration functionality that will convert over time the legacy JSON serialized metrics data into a serialized versioned object ** Affects: nova Importance: Low Assignee: Jay Pipes (jaypipes) Status: Triaged -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to OpenStack Compute (nova). https://bugs.launchpad.net/bugs/1466929 Title: compute_node.metrics field should be a nova.objects object. Status in OpenStack Compute (Nova): Triaged Bug description: Right now, the compute_nodes.metrics field is defined as a TEXT field and contains a straight JSON-ified string of the single-level dict of keys returned by the single monitor currently in the Nova tree: the CPU monitor. https://review.openstack.org/#/c/180983/12/specs/liberty/approved/mem- bw.rst introduces a potential new memory bandwidth monitor class, and we should evolve the metrics field to be a versioned object field instead of the flat string field it currently is. We need to do the following: 1) Change the CPU monitor to return a nova.objects.CPUStats (or similar) 2) Change nova.objects.ComputeNode's metrics field from a String field to a nova.objects.VirtMetrics field, which will have as its only field an ObjectField('CPUStats') 3) Add data migration functionality that will convert over time the legacy JSON serialized metrics data into a serialized versioned object To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1466929/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp
