Add new Kubernetes resource kind: "CustomResourceDefinition"

Custom resource definition example in Kubernetes:
  apiVersion: "apiextensions.k8s.io/v1beta"
  kind: CustomResourceDefinition
  metadata:
    name: networks.kubernetes.com
  spec:
    group: kubernetes.com
    version: v1
    scope: Namespaced
    names:
      plural: networks
      singular: network
      kind: Network

Proposed Kubernetes context network definition:
  context:
    custom_resources:
      - name: network        # name of the resource (singular)
        version: v1          # optional, "v1" by default
        scope: Namespaced    # optional, "Namespaced" by default

From this definition, we will extract the Kubernetes parameters:
  - metadata.name: custom_resources.name + "s" + context_name + ".com"
  - spec.group: context_name + ".com"
  - spec.scope: custom_resources.scope
  - spec.version: custom_resources.version
  - spec.names.plural: custom_resources.name + "s"
  - spec.names.singular: custom_resources.name
  - spec.names.kind: custom_resources.name with first capital letter

[1] https://kubernetes.io/docs/concepts/api-extension/custom-resources/

JIRA: YARDSTICK-1163

Change-Id: If8980dc3f6ddf9c6949bf15be8011aa98482ddc9
Signed-off-by: Rodolfo Alonso Hernandez <rodolfo.alonso.hernandez@intel.com>

1 files changed, 105 insertions, 0 deletions

diff --git a/yardstick/tests/unit/common/test_kubernetes_utils.py b/yardstick/tests/unit/common/test_kubernetes_utils.py
new file mode 100644
index 000000000..e264fd94b
--- /dev/null
+++ b/yardstick/tests/unit/common/test_kubernetes_utils.py
@@ -0,0 +1,105 @@
+# Copyright (c) 2018 Intel 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.
+
+import mock
+from kubernetes import client
+from kubernetes.client import rest
+from kubernetes import config
+
+from yardstick.common import constants
+from yardstick.common import exceptions
+from yardstick.common import kubernetes_utils
+from yardstick.tests.unit import base
+
+
+class GetExtensionsV1betaApiTestCase(base.BaseUnitTestCase):
+
+    @mock.patch.object(client, 'ApiextensionsV1beta1Api', return_value='api')
+    @mock.patch.object(config, 'load_kube_config')
+    def test_execute_correct(self, mock_load_kube_config, mock_api):
+        self.assertEqual('api', kubernetes_utils.get_extensions_v1beta_api())
+        mock_load_kube_config.assert_called_once_with(
+            config_file=constants.K8S_CONF_FILE)
+        mock_api.assert_called_once()
+
+    @mock.patch.object(config, 'load_kube_config')
+    def test_execute_exception(self, mock_load_kube_config):
+        mock_load_kube_config.side_effect = IOError
+        with self.assertRaises(exceptions.KubernetesConfigFileNotFound):
+            kubernetes_utils.get_extensions_v1beta_api()
+
+
+class CreateCustomResourceDefinitionTestCase(base.BaseUnitTestCase):
+
+    @mock.patch.object(client, 'V1beta1CustomResourceDefinition',
+                       return_value='crd_obj')
+    @mock.patch.object(kubernetes_utils, 'get_extensions_v1beta_api')
+    def test_execute_correct(self, mock_get_api, mock_crd):
+        mock_create_crd = mock.Mock()
+        mock_get_api.return_value = mock_create_crd
+        body = {'spec': 'fake_spec', 'metadata': 'fake_metadata'}
+
+        kubernetes_utils.create_custom_resource_definition(body)
+        mock_get_api.assert_called_once()
+        mock_crd.assert_called_once_with(spec='fake_spec',
+                                         metadata='fake_metadata')
+        mock_create_crd.create_custom_resource_definition.\
+            assert_called_once_with('crd_obj')
+
+    @mock.patch.object(client, 'V1beta1CustomResourceDefinition',
+                       return_value='crd_obj')
+    @mock.patch.object(kubernetes_utils, 'get_extensions_v1beta_api')
+    def test_execute_exception(self, mock_get_api, mock_crd):
+        mock_create_crd = mock.Mock()
+        mock_create_crd.create_custom_resource_definition.\
+            side_effect = rest.ApiException
+        mock_get_api.return_value = mock_create_crd
+        body = {'spec': 'fake_spec', 'metadata': 'fake_metadata'}
+
+        with self.assertRaises(exceptions.KubernetesApiException):
+            kubernetes_utils.create_custom_resource_definition(body)
+        mock_get_api.assert_called_once()
+        mock_crd.assert_called_once_with(spec='fake_spec',
+                                         metadata='fake_metadata')
+        mock_create_crd.create_custom_resource_definition.\
+            assert_called_once_with('crd_obj')
+
+
+class DeleteCustomResourceDefinitionTestCase(base.BaseUnitTestCase):
+
+    @mock.patch.object(client, 'V1DeleteOptions', return_value='del_obj')
+    @mock.patch.object(kubernetes_utils, 'get_extensions_v1beta_api')
+    def test_execute_correct(self, mock_get_api, mock_delobj):
+        mock_delete_crd = mock.Mock()
+        mock_get_api.return_value = mock_delete_crd
+
+        kubernetes_utils.delete_custom_resource_definition('name')
+        mock_get_api.assert_called_once()
+        mock_delobj.assert_called_once()
+        mock_delete_crd.delete_custom_resource_definition.\
+            assert_called_once_with('name', 'del_obj')
+
+    @mock.patch.object(client, 'V1DeleteOptions', return_value='del_obj')
+    @mock.patch.object(kubernetes_utils, 'get_extensions_v1beta_api')
+    def test_execute_exception(self, mock_get_api, mock_delobj):
+        mock_delete_crd = mock.Mock()
+        mock_delete_crd.delete_custom_resource_definition.\
+            side_effect = rest.ApiException
+        mock_get_api.return_value = mock_delete_crd
+
+        with self.assertRaises(exceptions.KubernetesApiException):
+            kubernetes_utils.delete_custom_resource_definition('name')
+        mock_delobj.assert_called_once()
+        mock_delete_crd.delete_custom_resource_definition.\
+            assert_called_once_with('name', 'del_obj')