Refactor strategy tempest

Depends-on: I950eec50d2cee38bd22c47a70ae6f88bbf049080
Depends-on: I6f39e8d935195c611f668f71590e1d9ff52ced0d
Depends-on: I7e441608b38338eecd80e663ed3abe66a89e504f
Depends-on: Ic6c44ae44da7c3b9a1c20e9b24a036063af266ba
Change-Id: I65ec65fc6da80eaf5feaaf0e49b295818f4a60b2

.zuul.yaml

@@ -7,7 +7,7 @@
         - watcher-tempest-functional
         - watcher-tempest-dummy_optim
         - watcher-tempest-actuator
-        - watcher-tempest-basic_optim:
+        - watcher-tempest-strategies:
             voting: false
         - watcher-tempest-vm_workload_consolidation
         - watcher-tempest-host_maintenance

watcher_tempest_plugin/tests/scenario/base.py

@@ -193,6 +193,10 @@ class BaseInfraOptimScenarioTest(manager.ScenarioTest):
         :param metrics: The metrics add to resource when using Gnocchi
         """
         compute_nodes = self.get_compute_nodes_setup()
+        instances = self.mgr.servers_client.list_servers(
+            detail=True)['servers']
+        if instances:
+            return instances
 
         created_instances = []
         for _ in compute_nodes[:CONF.compute.min_compute_nodes]:

watcher_tempest_plugin/tests/scenario/test_execute_strategies.py

@@ -0,0 +1,171 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2019 ZTE Corporation
+#
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from tempest import config
+
+from watcher_tempest_plugin.tests.scenario import base
+
+CONF = config.CONF
+
+
+class TestExecuteStrategies(base.BaseInfraOptimScenarioTest):
+    """Tests for strategies"""
+
+    @classmethod
+    def skip_checks(cls):
+        super(TestExecuteStrategies, cls).skip_checks()
+
+    @classmethod
+    def resource_setup(cls):
+        super(TestExecuteStrategies, cls).resource_setup()
+        if CONF.compute.min_compute_nodes < 2:
+            raise cls.skipException(
+                "Less than 2 compute nodes, skipping multinode tests.")
+        if not CONF.compute_feature_enabled.live_migration:
+            raise cls.skipException("Live migration is not enabled")
+
+        cls.initial_compute_nodes_setup = cls.get_compute_nodes_setup()
+        enabled_compute_nodes = [cn for cn in cls.initial_compute_nodes_setup
+                                 if cn.get('status') == 'enabled']
+
+        cls.wait_for_compute_node_setup()
+
+        if len(enabled_compute_nodes) < 2:
+            raise cls.skipException(
+                "Less than 2 compute nodes are enabled, "
+                "skipping multinode tests.")
+
+    def test_execute_basic_strategy(self):
+        self.addCleanup(self.rollback_compute_nodes_status)
+        self._create_one_instance_per_host_with_statistic()
+        self.make_host_statistic()
+        goal_name = "server_consolidation"
+        strategy_name = "basic"
+        audit_kwargs = {
+            "parameters": {
+                "granularity": 300,
+                "period": 300,
+                "aggregation_method": {"instance": "mean",
+                                       "compute_node": "mean"}
+            }
+        }
+
+        self.execute_strategy(goal_name, strategy_name, **audit_kwargs)
+
+    def test_execute_dummy_strategy(self):
+        goal_name = "dummy"
+        strategy_name = "dummy"
+        audit_kwargs = dict()
+
+        self.execute_strategy(goal_name, strategy_name, **audit_kwargs)
+
+    def test_execute_host_maintenance_strategy(self):
+        instances = self._create_one_instance_per_host_with_statistic()
+        hostname = instances[0].get('OS-EXT-SRV-ATTR:hypervisor_hostname')
+
+        goal_name = "cluster_maintaining"
+        strategy_name = "host_maintenance"
+        audit_kwargs = dict()
+        audit_kwargs = {
+            "parameters": {
+                "maintenance_node": hostname
+            }
+        }
+
+        self.execute_strategy(goal_name, strategy_name, **audit_kwargs)
+
+    def test_execute_storage_capacity_balance_strategy(self):
+        self.create_volume(imageRef=CONF.compute.image_ref, size=3)
+        self.create_volume(imageRef=CONF.compute.image_ref, size=3)
+        self.create_volume(imageRef=CONF.compute.image_ref, size=3)
+        self.create_volume(imageRef=CONF.compute.image_ref)
+        audit_parameters = {"volume_threshold": 25}
+
+        goal_name = "workload_balancing"
+        strategy_name = "storage_capacity_balance"
+        audit_kwargs = {"parameters": audit_parameters}
+
+        self.execute_strategy(goal_name, strategy_name, **audit_kwargs)
+
+    def test_execute_vm_workload_consolidation_strategy(self):
+        self.addCleanup(self.rollback_compute_nodes_status)
+        metrics = {
+            'cpu_util': {
+                'archive_policy_name': 'low'
+            },
+            'memory.resident': {
+                'archive_policy_name': 'low'
+            },
+            'memory': {
+                'archive_policy_name': 'low'
+            },
+            'disk.root.size': {
+                'archive_policy_name': 'low'
+            }
+        }
+        self._create_one_instance_per_host_with_statistic(metrics)
+
+        goal_name = "server_consolidation"
+        strategy_name = "vm_workload_consolidation"
+        audit_kwargs = {
+            "parameters": {
+                "period": 300,
+            }
+        }
+
+        self.execute_strategy(goal_name, strategy_name, **audit_kwargs)
+
+    def test_execute_workload_stabilization_strategy(self):
+        self.addCleanup(self.rollback_compute_nodes_status)
+        instances = self._create_one_instance_per_host_with_statistic()
+        self._pack_all_created_instances_on_one_host(instances)
+        self.make_host_statistic()
+
+        audit_parameters = {
+            "metrics": ["instance_cpu_usage"],
+            "thresholds": {"instance_cpu_usage": 0.2},
+            "weights": {"instance_cpu_usage_weight": 1.0},
+            "periods": {"instance": 72000, "compute_node": 60000},
+            "instance_metrics": {"instance_cpu_usage": "host_cpu_usage"},
+            "granularity": 300,
+            "aggregation_method": {"instance": "mean", "compute_node": "mean"}}
+
+        goal_name = "workload_balancing"
+        strategy_name = "workload_stabilization"
+        audit_kwargs = {"parameters": audit_parameters}
+
+        self.execute_strategy(goal_name, strategy_name, **audit_kwargs)
+
+    def test_execute_zone_migration_live_migration_strategy(self):
+        self.addCleanup(self.rollback_compute_nodes_status)
+        instances = self._create_one_instance_per_host_with_statistic()
+        node = instances[0].get('OS-EXT-SRV-ATTR:hypervisor_hostname')
+
+        vacant_node = [hyp['hypervisor_hostname'] for hyp
+                       in self.get_hypervisors_setup()
+                       if hyp['state'] == 'up'
+                       and hyp['hypervisor_hostname'] != node][0]
+
+        audit_parameters = {
+            "compute_nodes": [{"src_node": node, "dst_node": vacant_node}],
+            }
+
+        goal_name = "hardware_maintenance"
+        strategy_name = "zone_migration"
+        audit_kwargs = {"parameters": audit_parameters}
+
+        self.execute_strategy(goal_name, strategy_name, **audit_kwargs)