+ def _collect_instance_disk_metric(self, openstack_metric_name, resource_id):
+ value = None
+ instances = self.client.resource.search(
+ resource_type='instance_disk',
+ query={'=': {'instance_id': resource_id}},
+ )
+ for instance in instances:
+ try:
+ measures = self.client.metric.get_measures(
+ openstack_metric_name, resource_id=instance['id'], limit=1
+ )
+ if measures:
+ value = measures[-1][2]
+
+ except gnocchiclient.exceptions.NotFound as e:
+ log.debug("No metric %s found for instance disk %s: %s", openstack_metric_name,
+ instance['id'], e)
+ return value
+