Add nova.getHypervisorStatistics

Get hypervisor statistics over all compute nodes.

Measure the "nova hypervisor-stats" command performance.

Change-Id: Id7b2ff3e9f85c9f99c3f701637b8be32f9e23fe4

rally-jobs/nova.yaml

@@ -662,6 +662,20 @@
         failure_rate:
           max: 0
 
+  NovaHypervisors.statistics_hypervisors:
+    -
+      args: {}
+      runner:
+        type: "constant"
+        times: 5
+        concurrency: 2
+      context:
+        users:
+          tenants: 2
+          users_per_tenant: 2
+      sla:
+        failure_rate:
+          max: 0
 
   NovaHypervisors.list_and_get_hypervisors:
     -

rally/plugins/openstack/scenarios/nova/hypervisors.py

@@ -62,6 +62,19 @@ class ListAndGetHypervisors(utils.NovaScenario):
                 self._get_hypervisor(hypervisor)
 
 
+@validation.required_services(consts.Service.NOVA)
+@validation.required_openstack(admin=True)
+@scenario.configure(name="NovaHypervisors.statistics_hypervisors")
+class StatisticsHypervisors(utils.NovaScenario):
+
+    def run(self):
+        """Get hypervisor statistics over all compute nodes.
+
+        Measure the "nova hypervisor-stats" command performance.
+        """
+        self._statistics_hypervisors()
+
+
 @validation.required_services(consts.Service.NOVA)
 @validation.required_openstack(admin=True)
 @scenario.configure(name="NovaHypervisors.list_and_get_uptime_hypervisors")

rally/plugins/openstack/scenarios/nova/utils.py

@@ -863,6 +863,14 @@ class NovaScenario(scenario.OpenStackScenario):
         """List hypervisors."""
         return self.admin_clients("nova").hypervisors.list(detailed)
 
+    @atomic.action_timer("nova.statistics_hypervisors")
+    def _statistics_hypervisors(self):
+        """Get hypervisor statistics over all compute nodes.
+
+        :returns: Hypervisor statistics
+        """
+        return self.admin_clients("nova").hypervisors.statistics()
+
     @atomic.optional_action_timer("nova.get_hypervisor")
     def _get_hypervisor(self, hypervisor):
         """Get a specific hypervisor.

samples/tasks/scenarios/nova/statistics-hypervisors.json

@@ -0,0 +1,23 @@
+{
+  "NovaHypervisors.statistics_hypervisors": [
+    {
+      "args": {},
+      "runner": {
+        "type": "constant",
+        "concurrency": 2,
+        "times": 2
+      },
+      "context": {
+        "users": {
+          "tenants": 3,
+          "users_per_tenant": 2
+        }
+      },
+      "sla": {
+        "failure_rate": {
+          "max": 0
+        }
+      }
+    }
+  ]
+}

samples/tasks/scenarios/nova/statistics-hypervisors.yaml

@@ -0,0 +1,15 @@
+---
+  NovaHypervisors.statistics_hypervisors:
+    -
+      args: {}
+      runner:
+        type: "constant"
+        times: 2
+        concurrency: 2
+      context:
+        users:
+          tenants: 3
+          users_per_tenant: 2
+      sla:
+        failure_rate:
+          max: 0

tests/unit/plugins/openstack/scenarios/nova/test_hypervisors.py

@@ -38,6 +38,12 @@ class NovaHypervisorsTestCase(test.ScenarioTestCase):
         self._test_atomic_action_timer(scenario.atomic_actions(),
                                        "nova.get_hypervisor")
 
+    def test_statistics_hypervisors(self):
+        scenario = hypervisors.StatisticsHypervisors(self.context)
+        scenario._statistics_hypervisors = mock.Mock()
+        scenario.run()
+        scenario._statistics_hypervisors.assert_called_once_with()
+
     def test_list_and_get_uptime_hypervisors(self):
         scenario = hypervisors.ListAndGetUptimeHypervisors(self.context)
         scenario._list_hypervisors = mock.MagicMock(detailed=False)

tests/unit/plugins/openstack/scenarios/nova/test_utils.py

@@ -841,6 +841,17 @@ class NovaScenarioTestCase(test.ScenarioTestCase):
         self._test_atomic_action_timer(nova_scenario.atomic_actions(),
                                        "nova.list_hypervisors")
 
+    def test__statistics_hypervisors(self):
+        nova_scenario = utils.NovaScenario()
+        result = nova_scenario._statistics_hypervisors()
+        self.assertEqual(
+            self.admin_clients("nova").hypervisors.statistics.return_value,
+            result)
+        (self.admin_clients("nova").hypervisors.statistics.
+            assert_called_once_with())
+        self._test_atomic_action_timer(nova_scenario.atomic_actions(),
+                                       "nova.statistics_hypervisors")
+
     def test__get_hypervisor(self):
         hypervisor = mock.Mock()
         nova_scenario = utils.NovaScenario()