kubernetes_utils: avoid 404 error code in delete_pod()

JIRA: YARDSTICK-1320

Change-Id: I5b762d4732440008630093e1d0952f7e41a8a191
Signed-off-by: Mytnyk, Volodymyr <volodymyrx.mytnyk@intel.com>

3 files changed, 37 insertions, 4 deletions

diff --git a/yardstick/benchmark/contexts/kubernetes.py b/yardstick/benchmark/contexts/kubernetes.py
index 27a011334..704c4a022 100644
--- a/yardstick/benchmark/contexts/kubernetes.py
+++ b/yardstick/benchmark/contexts/kubernetes.py
@@ -117,7 +117,7 @@ class KubernetesContext(ctx_base.Context):
             self._delete_pod(pod)
 
     def _delete_pod(self, pod):
-        k8s_utils.delete_pod(pod)
+        k8s_utils.delete_pod(pod, skip_codes=[404])
 
     def _create_crd(self):
         LOG.info('Create Custom Resource Definition elements')
diff --git a/yardstick/common/kubernetes_utils.py b/yardstick/common/kubernetes_utils.py
index 42267fc41..35e590f2b 100644
--- a/yardstick/common/kubernetes_utils.py
+++ b/yardstick/common/kubernetes_utils.py
@@ -136,8 +136,10 @@ def delete_replication_controller(name,
 def delete_pod(name,
                namespace='default',
                wait=False,
+               skip_codes=None,
                **kwargs):    # pragma: no cover
     # pylint: disable=unused-argument
+    skip_codes = [] if not skip_codes else skip_codes
     core_v1_api = get_core_api()
     body = kwargs.get('body', client.V1DeleteOptions())
     kwargs.pop('body', None)
@@ -146,9 +148,12 @@ def delete_pod(name,
                                           namespace,
                                           body,
                                           **kwargs)
-    except ApiException:
-        LOG.exception('Delete pod failed')
-        raise
+    except ApiException as e:
+        if e.status in skip_codes:
+            LOG.info(e.reason)
+        else:
+            raise exceptions.KubernetesApiException(
+                action='delete', resource='Pod')
 
 
 def read_pod(name,
diff --git a/yardstick/tests/unit/common/test_kubernetes_utils.py b/yardstick/tests/unit/common/test_kubernetes_utils.py
index bf9992b57..bdc2c12d5 100644
--- a/yardstick/tests/unit/common/test_kubernetes_utils.py
+++ b/yardstick/tests/unit/common/test_kubernetes_utils.py
@@ -222,3 +222,31 @@ class DeleteNetworkTestCase(base.BaseUnitTestCase):
             kubernetes_utils.delete_network(
                 constants.SCOPE_CLUSTER, mock.ANY, mock.ANY, mock.ANY,
                 mock.ANY)
+
+
+class DeletePodTestCase(base.BaseUnitTestCase):
+    @mock.patch.object(kubernetes_utils, 'get_core_api')
+    def test_execute_correct(self, mock_get_api):
+        mock_api = mock.Mock()
+        mock_get_api.return_value = mock_api
+
+        kubernetes_utils.delete_pod("name", body=None)
+        mock_api.delete_namespaced_pod.assert_called_once_with(
+            "name", 'default', None)
+
+    @mock.patch.object(kubernetes_utils, 'get_core_api')
+    def test_execute_exception(self, mock_get_api):
+        mock_api = mock.Mock()
+        mock_api.delete_namespaced_pod.side_effect = rest.ApiException(status=200)
+
+        mock_get_api.return_value = mock_api
+        with self.assertRaises(exceptions.KubernetesApiException):
+            kubernetes_utils.delete_pod(mock.ANY, skip_codes=[404])
+
+    @mock.patch.object(kubernetes_utils, 'get_core_api')
+    def test_execute_skip_exception(self, mock_get_api):
+        mock_api = mock.Mock()
+        mock_api.delete_namespaced_pod.side_effect = rest.ApiException(status=404)
+
+        mock_get_api.return_value = mock_api
+        kubernetes_utils.delete_pod(mock.ANY, skip_codes=[404])