Use API apps/v1 to create deployment

In Kubernetes version 1.16, deployment in ExtensionsV1beta1Deployment
is deprecated [1], so it is unable to create cnf.
In this patch, I first create method to get AppsV1Api [2],
then I include app_v1_api_client in Kubernetes translate_template to
create deployment.

[1]: https://kubernetes.io/blog/2019/07/18/api-deprecations-in-1-16/
[2]: https://github.com/kubernetes-client/python/blob/master/kubernetes/docs/AppsV1Api.md

Related-Bug: #1878753
Change-Id: I0004f5045a6f4aeae84c2105a1dac4369ab3b2fe

tacker/common/container/kubernetes_utils.py

@@ -67,6 +67,10 @@ class KubernetesHTTPAPI(object):
         k8s_client = self.get_k8s_client(auth_plugin=auth)
         return client.AutoscalingV1Api(api_client=k8s_client)
 
+    def get_app_v1_api_client(self, auth):
+        k8s_client = self.get_k8s_client(auth_plugin=auth)
+        return client.AppsV1Api(api_client=k8s_client)
+
     @staticmethod
     def create_ca_cert_tmp_file(ca_cert):
         file_descriptor, file_path = tempfile.mkstemp()

tacker/vnfm/infra_drivers/kubernetes/k8s/translate_outputs.py

@@ -33,10 +33,10 @@ DASH_CHARACTER = '_'
 class Transformer(object):
     """Transform TOSCA template to Kubernetes resources"""
 
-    def __init__(self, core_v1_api_client, extension_api_client,
+    def __init__(self, core_v1_api_client, app_v1_api_client,
                  scaling_api_client):
         self.core_v1_api_client = core_v1_api_client
-        self.extension_api_client = extension_api_client
+        self.app_v1_api_client = app_v1_api_client
         self.scaling_api_client = scaling_api_client
 
     def transform(self, tosca_kube_objects):
@@ -101,7 +101,7 @@ class Transformer(object):
                 LOG.debug('Successfully created ConfigMap %s',
                           k8s_object.metadata.name)
             elif object_type == 'Deployment':
-                self.extension_api_client.create_namespaced_deployment(
+                self.app_v1_api_client.create_namespaced_deployment(
                     namespace=namespace,
                     body=k8s_object)
                 LOG.debug('Successfully created Deployment %s',
@@ -221,15 +221,15 @@ class Transformer(object):
             metadata=client.V1ObjectMeta(
                 labels=labels, annotations=tosca_kube_obj.annotations),
             spec=client.V1PodSpec(containers=containers))
-
         # Create the specification of deployment
-        deployment_spec = client.ExtensionsV1beta1DeploymentSpec(
-            template=pod_template)
-        metadata = client.V1ObjectMeta(name=deployment_name)
+        label_selector = client.V1LabelSelector(match_labels=labels)
+        deployment_spec = client.V1DeploymentSpec(
+            template=pod_template, selector=label_selector)
+        metadata = client.V1ObjectMeta(name=deployment_name, labels=labels)
 
         # Instantiate the deployment object
-        deployment = client.ExtensionsV1beta1Deployment(
-            api_version="extensions/v1beta1",
+        deployment = client.V1Deployment(
+            api_version="apps/v1",
             kind="Deployment",
             metadata=metadata,
             spec=deployment_spec)
@@ -247,7 +247,7 @@ class Transformer(object):
 
             # Create target Deployment object
             target = client.V1CrossVersionObjectReference(
-                api_version="extensions/v1beta1",
+                api_version="apps/v1",
                 kind="Deployment",
                 name=deployment_name)
             # Create the specification of horizon pod auto-scaling

tacker/vnfm/infra_drivers/kubernetes/kubernetes_driver.py

@@ -92,14 +92,14 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
         try:
             core_v1_api_client = self.kubernetes.get_core_v1_api_client(
                 auth=auth_cred)
-            extension_api_client = self.kubernetes.get_extension_api_client(
+            app_v1_api_client = self.kubernetes.get_app_v1_api_client(
                 auth=auth_cred)
             scaling_api_client = self.kubernetes.get_scaling_api_client(
                 auth=auth_cred)
             tosca_to_kubernetes = translate_template.TOSCAToKubernetes(
                 vnf=vnf,
                 core_v1_api_client=core_v1_api_client,
-                extension_api_client=extension_api_client,
+                app_v1_api_client=app_v1_api_client,
                 scaling_api_client=scaling_api_client)
             deployment_names = tosca_to_kubernetes.deploy_kubernetes_objects()
         except Exception as e:
@@ -272,7 +272,7 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
         try:
             core_v1_api_client = self.kubernetes.get_core_v1_api_client(
                 auth=auth_cred)
-            extension_api_client = self.kubernetes.get_extension_api_client(
+            app_v1_api_client = self.kubernetes.get_app_v1_api_client(
                 auth=auth_cred)
             scaling_api_client = self.kubernetes.get_scaling_api_client(
                 auth=auth_cred)
@@ -321,7 +321,7 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
                     body = client.V1DeleteOptions(
                         propagation_policy='Foreground',
                         grace_period_seconds=5)
-                    extension_api_client.delete_namespaced_deployment(
+                    app_v1_api_client.delete_namespaced_deployment(
                         namespace=namespace,
                         name=deployment_name,
                         body=body)
@@ -350,7 +350,7 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
         try:
             core_v1_api_client = self.kubernetes.get_core_v1_api_client(
                 auth=auth_cred)
-            extension_api_client = self.kubernetes.get_extension_api_client(
+            app_v1_api_client = self.kubernetes.get_app_v1_api_client(
                 auth=auth_cred)
             scaling_api_client = self.kubernetes.get_scaling_api_client(
                 auth=auth_cred)
@@ -386,7 +386,7 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
                     except Exception:
                         pass
                     try:
-                        extension_api_client.read_namespaced_deployment(
+                        app_v1_api_client.read_namespaced_deployment(
                             namespace=namespace,
                             name=deployment_name)
                         count = count + 1
@@ -416,7 +416,7 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
         # initialize Kubernetes APIs
         auth_cred, file_descriptor = self._get_auth_creds(auth_attr)
         try:
-            extension_api_client = self.kubernetes.get_extension_api_client(
+            app_v1_api_client = self.kubernetes.get_app_v1_api_client(
                 auth=auth_cred)
             scaling_api_client = self.kubernetes.get_scaling_api_client(
                 auth=auth_cred)
@@ -427,7 +427,7 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
             for i in range(0, len(deployment_names), 2):
                 namespace = deployment_names[i]
                 deployment_name = deployment_names[i + 1]
-                deployment_info = extension_api_client.\
+                deployment_info = app_v1_api_client.\
                     read_namespaced_deployment(namespace=namespace,
                                                name=deployment_name)
                 scaling_info = scaling_api_client.\
@@ -454,7 +454,7 @@ class Kubernetes(abstract_driver.VnfAbstractDriver,
                               {'number': replicas})
                     scale_replicas = replicas
                 deployment_info.spec.replicas = scale_replicas
-                extension_api_client.patch_namespaced_deployment_scale(
+                app_v1_api_client.patch_namespaced_deployment_scale(
                     namespace=namespace,
                     name=deployment_name,
                     body=deployment_info)

tacker/vnfm/infra_drivers/kubernetes/translate_template.py

@@ -33,10 +33,10 @@ CONF = cfg.CONF
 class TOSCAToKubernetes(object):
 
     def __init__(self, vnf, core_v1_api_client,
-                 extension_api_client, scaling_api_client):
+                 app_v1_api_client, scaling_api_client):
         self.vnf = vnf
         self.core_v1_api_client = core_v1_api_client
-        self.extension_api_client = extension_api_client
+        self.app_v1_api_client = app_v1_api_client
         self.scaling_api_client = scaling_api_client
         self.attributes = {}
         self.vnfd_yaml = None
@@ -57,7 +57,7 @@ class TOSCAToKubernetes(object):
         tosca_kube_objects = self.generate_tosca_kube_objects()
         transformer = translate_outputs.Transformer(
             core_v1_api_client=self.core_v1_api_client,
-            extension_api_client=self.extension_api_client,
+            app_v1_api_client=self.app_v1_api_client,
             scaling_api_client=self.scaling_api_client)
         kubernetes_objects = transformer.transform(tosca_kube_objects)
         deployment_names = transformer.deploy(