Add NovaFlavors.create_and_get_flavor

The scenario first creates a flavor,then get detailed
information of the created flavor

Change-Id: I99dd4f0ae39ed7587bbd71e83b205dc205acacca

rally-jobs/nova.yaml

@@ -1069,6 +1069,20 @@
         failure_rate:
           max: 0
 
+  NovaFlavors.create_and_get_flavor:
+    -
+      args:
+        ram: 500
+        vcpus: 1
+        disk: 1
+      runner:
+        type: "constant"
+        times: 5
+        concurrency: 2
+      sla:
+        failure_rate:
+          max: 0
+
   NovaFlavors.create_and_list_flavor_access:
     -
       args:

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

@@ -73,3 +73,23 @@ class NovaFlavors(utils.NovaScenario):
         :param kwargs: Optional additional arguments for flavor creation
         """
         self._create_flavor(ram, vcpus, disk, **kwargs)
+
+
+@validation.required_services(consts.Service.NOVA)
+@validation.required_openstack(admin=True)
+@scenario.configure(context={"admin_cleanup": ["nova"]},
+                    name="NovaFlavors.create_and_get_flavor")
+class CreateAndGetFlavor(utils.NovaScenario):
+    """Scenario for create and get flavor."""
+
+    def run(self, ram, vcpus, disk, **kwargs):
+        """Create flavor and get detailed information of the flavor.
+
+        :param ram: Memory in MB for the flavor
+        :param vcpus: Number of VCPUs for the flavor
+        :param disk: Size of local disk in GB
+        :param kwargs: Optional additional arguments for flavor creation
+
+        """
+        flavor = self._create_flavor(ram, vcpus, disk, **kwargs)
+        self._get_flavor(flavor.id)

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

@@ -987,3 +987,11 @@ class NovaScenario(scenario.OpenStackScenario):
                                  description=description)
         else:
             return server.update(name=new_name)
+
+    @atomic.action_timer("nova.get_flavor")
+    def _get_flavor(self, flavor_id):
+        """Show a flavor
+
+        :param flavor_id: The flavor ID to get
+        """
+        return self.admin_clients("nova").flavors.get(flavor_id)

samples/tasks/scenarios/nova/create-and-get-flavor.json

@@ -0,0 +1,27 @@
+{
+  "NovaFlavors.create_and_get_flavor": [
+    {
+      "runner": {
+        "type": "constant",
+        "concurrency": 2,
+        "times": 10
+      },
+      "args": {
+        "ram": 500,
+        "vcpus" : 1,
+        "disk": 1
+      },
+      "context": {
+        "users": {
+          "tenants": 1,
+          "users_per_tenant": 1
+        }
+      },
+      "sla": {
+        "failure_rate": {
+          "max": 0
+        }
+      }
+    }
+  ]
+}

samples/tasks/scenarios/nova/create-and-get-flavor.yaml

@@ -0,0 +1,19 @@
+
+---
+  NovaFlavors.create_and_get_flavor:
+    -
+      runner:
+        type: "constant"
+        concurrency: 2
+        times: 10
+      args:
+        ram: 500
+        vcpus : 1
+        disk: 1
+      context:
+        users:
+          tenants: 1
+          users_per_tenant: 1
+      sla:
+        failure_rate:
+          max: 0

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

@@ -54,3 +54,13 @@ class NovaFlavorsTestCase(test.TestCase):
         scenario.create_flavor(ram=100, vcpus=1, disk=1, fakeargs="fakeargs")
         scenario._create_flavor.assert_called_once_with(100, 1, 1,
                                                         fakeargs="fakeargs")
+
+    def test_create_and_get_flavor(self, **kwargs):
+        scenario = flavors.CreateAndGetFlavor()
+        scenario._create_flavor = mock.Mock()
+        scenario._get_flavor = mock.Mock()
+        scenario.run(ram=100, vcpus=1, disk=1, **kwargs)
+
+        scenario._create_flavor.assert_called_once_with(100, 1, 1, **kwargs)
+        scenario._get_flavor.assert_called_once_with(
+            scenario._create_flavor.return_value.id)

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

@@ -995,6 +995,17 @@ class NovaScenarioTestCase(test.ScenarioTestCase):
         self._test_atomic_action_timer(nova_scenario.atomic_actions(),
                                        "nova.create_flavor")
 
+    def test__get_flavor(self):
+        nova_scenario = utils.NovaScenario()
+        result = nova_scenario._get_flavor("foo_flavor_id")
+        self.assertEqual(
+            self.admin_clients("nova").flavors.get.return_value,
+            result)
+        self.admin_clients("nova").flavors.get.assert_called_once_with(
+            "foo_flavor_id")
+        self._test_atomic_action_timer(nova_scenario.atomic_actions(),
+                                       "nova.get_flavor")
+
     def test__update_server(self):
         server = mock.Mock()
         nova_scenario = utils.NovaScenario()