Add scoring engines to database and API layers

A Scoring Module needs to expose a list of available
scoring engines through API and Watcher CLI. This list
is stored in database and synchronized by Decision Engine.

Partially-Implements: blueprint scoring-module
Change-Id: I32168adeaf34fd12a731204c5b58fe68434ad087
APIImpact

watcher/tests/objects/test_scoring_engine.py

@@ -0,0 +1,150 @@
+# Copyright 2016 Intel
+# All Rights Reserved.
+#
+#    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.
+
+import mock
+from testtools import matchers
+
+from watcher import objects
+from watcher.tests.db import base
+from watcher.tests.db import utils
+
+
+class TestScoringEngineObject(base.DbTestCase):
+
+    def setUp(self):
+        super(TestScoringEngineObject, self).setUp()
+        self.fake_scoring_engine = utils.get_test_scoring_engine()
+
+    def test_get_by_id(self):
+        scoring_engine_id = self.fake_scoring_engine['id']
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_by_id',
+                               autospec=True) as mock_get_scoring_engine:
+            mock_get_scoring_engine.return_value = self.fake_scoring_engine
+            scoring_engine = objects.ScoringEngine.get_by_id(
+                self.context, scoring_engine_id)
+            mock_get_scoring_engine.assert_called_once_with(self.context,
+                                                            scoring_engine_id)
+            self.assertEqual(self.context, scoring_engine._context)
+
+    def test_get_by_uuid(self):
+        se_uuid = self.fake_scoring_engine['uuid']
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_by_uuid',
+                               autospec=True) as mock_get_scoring_engine:
+            mock_get_scoring_engine.return_value = self.fake_scoring_engine
+            scoring_engine = objects.ScoringEngine.get_by_uuid(
+                self.context, se_uuid)
+            mock_get_scoring_engine.assert_called_once_with(self.context,
+                                                            se_uuid)
+            self.assertEqual(self.context, scoring_engine._context)
+
+    def test_get_by_name(self):
+        scoring_engine_uuid = self.fake_scoring_engine['uuid']
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_by_uuid',
+                               autospec=True) as mock_get_scoring_engine:
+            mock_get_scoring_engine.return_value = self.fake_scoring_engine
+            scoring_engine = objects.ScoringEngine.get(
+                self.context, scoring_engine_uuid)
+            mock_get_scoring_engine.assert_called_once_with(
+                self.context, scoring_engine_uuid)
+            self.assertEqual(self.context, scoring_engine._context)
+
+    def test_list(self):
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_list',
+                               autospec=True) as mock_get_list:
+            mock_get_list.return_value = [self.fake_scoring_engine]
+            scoring_engines = objects.ScoringEngine.list(self.context)
+            self.assertEqual(1, mock_get_list.call_count, 1)
+            self.assertThat(scoring_engines, matchers.HasLength(1))
+            self.assertIsInstance(scoring_engines[0], objects.ScoringEngine)
+            self.assertEqual(self.context, scoring_engines[0]._context)
+
+    def test_create(self):
+        with mock.patch.object(self.dbapi, 'create_scoring_engine',
+                               autospec=True) as mock_create_scoring_engine:
+            mock_create_scoring_engine.return_value = self.fake_scoring_engine
+            scoring_engine = objects.ScoringEngine(
+                self.context, **self.fake_scoring_engine)
+
+            scoring_engine.create()
+            mock_create_scoring_engine.assert_called_once_with(
+                self.fake_scoring_engine)
+            self.assertEqual(self.context, scoring_engine._context)
+
+    def test_destroy(self):
+        _id = self.fake_scoring_engine['id']
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_by_id',
+                               autospec=True) as mock_get_scoring_engine:
+            mock_get_scoring_engine.return_value = self.fake_scoring_engine
+            with mock.patch.object(
+                    self.dbapi, 'destroy_scoring_engine',
+                    autospec=True) as mock_destroy_scoring_engine:
+                scoring_engine = objects.ScoringEngine.get_by_id(
+                    self.context, _id)
+                scoring_engine.destroy()
+                mock_get_scoring_engine.assert_called_once_with(
+                    self.context, _id)
+                mock_destroy_scoring_engine.assert_called_once_with(_id)
+                self.assertEqual(self.context, scoring_engine._context)
+
+    def test_save(self):
+        _id = self.fake_scoring_engine['id']
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_by_id',
+                               autospec=True) as mock_get_scoring_engine:
+            mock_get_scoring_engine.return_value = self.fake_scoring_engine
+            with mock.patch.object(
+                    self.dbapi, 'update_scoring_engine',
+                    autospec=True) as mock_update_scoring_engine:
+                scoring_engine = objects.ScoringEngine.get_by_id(
+                    self.context, _id)
+                scoring_engine.description = 'UPDATED DESCRIPTION'
+                scoring_engine.save()
+
+                mock_get_scoring_engine.assert_called_once_with(
+                    self.context, _id)
+                mock_update_scoring_engine.assert_called_once_with(
+                    _id, {'description': 'UPDATED DESCRIPTION'})
+                self.assertEqual(self.context, scoring_engine._context)
+
+    def test_refresh(self):
+        _id = self.fake_scoring_engine['id']
+        returns = [
+            dict(self.fake_scoring_engine, description="first description"),
+            dict(self.fake_scoring_engine, description="second description")]
+        expected = [mock.call(self.context, _id),
+                    mock.call(self.context, _id)]
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_by_id',
+                               side_effect=returns,
+                               autospec=True) as mock_get_scoring_engine:
+            scoring_engine = objects.ScoringEngine.get_by_id(self.context, _id)
+            self.assertEqual("first description", scoring_engine.description)
+            scoring_engine.refresh()
+            self.assertEqual("second description", scoring_engine.description)
+            self.assertEqual(expected, mock_get_scoring_engine.call_args_list)
+            self.assertEqual(self.context, scoring_engine._context)
+
+    def test_soft_delete(self):
+        _id = self.fake_scoring_engine['id']
+        with mock.patch.object(self.dbapi, 'get_scoring_engine_by_id',
+                               autospec=True) as mock_get_scoring_engine:
+            mock_get_scoring_engine.return_value = self.fake_scoring_engine
+            with mock.patch.object(self.dbapi, 'soft_delete_scoring_engine',
+                                   autospec=True) as mock_soft_delete:
+                scoring_engine = objects.ScoringEngine.get_by_id(
+                    self.context, _id)
+                scoring_engine.soft_delete()
+                mock_get_scoring_engine.assert_called_once_with(
+                    self.context, _id)
+                mock_soft_delete.assert_called_once_with(_id)
+                self.assertEqual(self.context, scoring_engine._context)