[Manila] Add benchmark for Manila list share servers operation

List of changes:
- Added support of 'list' operation for share servers.
- Added benchmark for listing of share servers.

Change-Id: Iea34c51eaf3cf73de52f882b09592a793a3159c1

rally-jobs/rally-manila.yaml

@@ -73,3 +73,15 @@
       sla:
         failure_rate:
           max: 0
+
+  ManilaShares.list_share_servers:
+    -
+      args:
+        search_opts: {}
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 10
+      sla:
+        failure_rate:
+          max: 0

rally/plugins/openstack/scenarios/manila/shares.py

@@ -121,3 +121,16 @@ class ManilaShares(utils.ManilaScenario):
             detailed=detailed,
             search_opts=search_opts,
         )
+
+    @validation.required_services(consts.Service.MANILA)
+    @validation.required_openstack(admin=True)
+    @base.scenario()
+    def list_share_servers(self, search_opts=None):
+        """Lists share servers.
+
+        Requires admin creds.
+
+        :param search_opts: container of following search opts:
+            "host", "status", "share_network" and "project_id".
+        """
+        self._list_share_servers(search_opts=search_opts)

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

@@ -160,3 +160,15 @@ class ManilaScenario(base.Scenario):
         share_networks = self.clients("manila").share_networks.list(
             detailed=detailed, search_opts=search_opts)
         return share_networks
+
+    @base.atomic_action_timer("manila.list_share_servers")
+    def _list_share_servers(self, search_opts=None):
+        """List share servers. Admin only.
+
+        :param search_opts: set of key-value pairs to filter share servers by.
+            Example: {"share_network": "share_network_name_or_id"}
+        :returns: list of instances of :class:`ShareServer`
+        """
+        share_servers = self.admin_clients("manila").share_servers.list(
+            search_opts=search_opts)
+        return share_servers

samples/tasks/scenarios/manila/list-share-servers.json

@@ -0,0 +1,14 @@
+{
+    "ManilaShares.list_share_servers": [
+        {
+            "args": {
+                "search_opts": {}
+            },
+            "runner": {
+                "type": "constant",
+                "times": 10,
+                "concurrency": 10
+            }
+        }
+    ]
+}

samples/tasks/scenarios/manila/list-share-servers.yaml

@@ -0,0 +1,9 @@
+---
+  ManilaShares.list_share_servers:
+    -
+      args:
+        search_opts: {}
+      runner:
+        type: "constant"
+        times: 10
+        concurrency: 10

tests/unit/plugins/openstack/scenarios/manila/test_shares.py

@@ -132,3 +132,19 @@ class ManilaSharesTestCase(test.TestCase):
             **expected_create_params)
         scenario._list_share_networks.assert_called_once_with(
             **expected_list_params)
+
+    @ddt.data(
+        {},
+        {"search_opts": None},
+        {"search_opts": {}},
+        {"search_opts": {"foo": "bar"}},
+    )
+    def test_list_share_servers(self, search_opts):
+        scenario = shares.ManilaShares()
+        scenario.context = {"admin": {"endpoint": "fake_endpoint"}}
+        scenario._list_share_servers = mock.MagicMock()
+
+        scenario.list_share_servers(search_opts=search_opts)
+
+        scenario._list_share_servers.assert_called_once_with(
+            search_opts=search_opts)

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

@@ -131,3 +131,20 @@ class ManilaScenarioTestCase(test.ClientsTestCase):
         self.clients("manila").share_networks.list.assert_called_once_with(
             detailed=params.get("detailed", True),
             search_opts=params.get("search_opts", None))
+
+    @ddt.data(
+        {},
+        {"search_opts": None},
+        {"search_opts": {"project_id": "fake_project"}},
+    )
+    def test__list_share_servers(self, params):
+        fake_share_servers = ["foo", "bar"]
+        self.admin_clients("manila").share_servers.list.return_value = (
+            fake_share_servers)
+
+        result = self.scenario._list_share_servers(**params)
+
+        self.assertEqual(fake_share_servers, result)
+        self.admin_clients(
+            "manila").share_servers.list.assert_called_once_with(
+                search_opts=params.get("search_opts", None))