Update logging of users context

Change-Id: I76e493d371a98097853176c5e6c7f7251fbb35ba

CHANGELOG.rst

@@ -16,6 +16,15 @@ Changelog
 .. Release notes for existing releases are MUTABLE! If there is something that
    was missed or can be improved, feel free to change it!
 
+unreleased
+----------
+
+Changed
+~~~~~~~
+
+* Improved logging message for the number of used threads while creating
+  keystone users and projects/tenants at *users@openstack* context.
+
 [1.5.0] - 2019-05-29
 --------------------
 
@@ -243,8 +252,8 @@ Fixed
 
 [1.0.0] - 2018-03-28
 --------------------
-Start a fork of `rally/plugins/openstack module of original OpenStack Rally
+A start of a fork from `rally/plugins/openstack module of original OpenStack
-project
+Rally project
 <https://github.com/openstack/rally/tree/0.11.1/rally/plugins/openstack>`_
 
 Added
@@ -271,7 +280,7 @@ Changed
   <https://github.com/openstack/python-novaclient/blob/10.0.0/releasenotes/notes/remove-virt-interfaces-add-rm-fixed-floating-398c905d9c91cca8.yaml>`_.
   These actions should be performed via neutronclient now. It is not as simple
   as it was via Nova-API and you can find more neutron-related atomic actions
-  in results of scenarios.
+  in results of workloads.
 
 Removed
 ~~~~~~~

rally_openstack/contexts/keystone/users.py

@@ -161,9 +161,7 @@ class UserGenerator(context.Context):
                 if default:
                     clients.neutron().delete_security_group(default[0]["id"])
 
-    def _create_tenants(self):
+    def _create_tenants(self, threads):
-        threads = self.config["resource_management_workers"]
-
         tenants = collections.deque()
 
         def publish(queue):
@@ -189,9 +187,8 @@ class UserGenerator(context.Context):
 
         return tenants_dict
 
-    def _create_users(self):
+    def _create_users(self, threads):
         # NOTE(msdubov): This should be called after _create_tenants().
-        threads = self.config["resource_management_workers"]
         users_per_tenant = self.config["users_per_tenant"]
         default_role = cfg.CONF.openstack.keystone_default_role
 
@@ -274,11 +271,13 @@ class UserGenerator(context.Context):
 
     def create_users(self):
         """Create tenants and users, using the broker pattern."""
-        threads = self.config["resource_management_workers"]
+
+        threads = min(self.config["resource_management_workers"],
+                      self.config["tenants"])
 
         LOG.debug("Creating %(tenants)d tenants using %(threads)s threads"
                   % {"tenants": self.config["tenants"], "threads": threads})
-        self.context["tenants"] = self._create_tenants()
+        self.context["tenants"] = self._create_tenants(threads)
 
         if len(self.context["tenants"]) < self.config["tenants"]:
             raise exceptions.ContextSetupFailure(
@@ -286,9 +285,10 @@ class UserGenerator(context.Context):
                 msg="Failed to create the requested number of tenants.")
 
         users_num = self.config["users_per_tenant"] * self.config["tenants"]
+        threads = min(self.config["resource_management_workers"], users_num)
         LOG.debug("Creating %(users)d users using %(threads)s threads"
                   % {"users": users_num, "threads": threads})
-        self.context["users"] = self._create_users()
+        self.context["users"] = self._create_users(threads)
         for user in self.context["users"]:
             self.context["tenants"][user["tenant_id"]]["users"].append(user)
 

tests/unit/contexts/keystone/test_users.py

@@ -345,7 +345,7 @@ class UserGeneratorForNewUsersTestCase(test.ScenarioTestCase):
     def test__create_tenants(self, mock_identity):
         self.context["config"]["users"]["tenants"] = 1
         user_generator = users.UserGenerator(self.context)
-        tenants = user_generator._create_tenants()
+        tenants = user_generator._create_tenants(1)
         self.assertEqual(1, len(tenants))
         id, tenant = tenants.popitem()
         self.assertIn("name", tenant)
@@ -356,7 +356,7 @@ class UserGeneratorForNewUsersTestCase(test.ScenarioTestCase):
         user_generator = users.UserGenerator(self.context)
         user_generator.context["tenants"] = {"t1": {"id": "t1", "name": "t1"},
                                              "t2": {"id": "t2", "name": "t2"}}
-        users_ = user_generator._create_users()
+        users_ = user_generator._create_users(4)
         self.assertEqual(4, len(users_))
         for user in users_:
             self.assertIn("id", user)
@@ -369,7 +369,7 @@ class UserGeneratorForNewUsersTestCase(test.ScenarioTestCase):
         user_generator = users.UserGenerator(self.context)
         user_generator.context["tenants"] = {"t1": {"id": "t1", "name": "t1"},
                                              "t2": {"id": "t2", "name": "t2"}}
-        users_ = user_generator._create_users()
+        users_ = user_generator._create_users(4)
         self.assertEqual(4, len(users_))
         for user in users_:
             self.assertIn("id", user)
@@ -517,7 +517,7 @@ class UserGeneratorForNewUsersTestCase(test.ScenarioTestCase):
         }
 
         user_generator = users.UserGenerator(config)
-        users_ = user_generator._create_users()
+        users_ = user_generator._create_users(2)
 
         for user in users_:
             self.assertEqual("internal", user["credential"].endpoint_type)
@@ -540,7 +540,7 @@ class UserGeneratorForNewUsersTestCase(test.ScenarioTestCase):
         }
 
         user_generator = users.UserGenerator(config)
-        users_ = user_generator._create_users()
+        users_ = user_generator._create_users(2)
 
         for user in users_:
             self.assertEqual("public", user["credential"].endpoint_type)