Check for network already created k8

When creating a network the host should be checked to see if the network
is already created. If the required network is already there it should be used.

JIRA: YARDSTICK-1315

Change-Id: I09b114a728364ee56397af70cc48f1b7904f06cc
Signed-off-by: John O Loughlin <john.oloughlin@intel.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/yardstick/common/kubernetes_utils.py b/yardstick/common/kubernetes_utils.py
index 42267fc41..d1dd42173 100644
--- a/yardstick/common/kubernetes_utils.py
+++ b/yardstick/common/kubernetes_utils.py
@@ -241,10 +241,30 @@ def get_custom_resource_definition(kind):
             action='delete', resource='CustomResourceDefinition')
 
 
-def create_network(scope, group, version, plural, body, namespace='default'):
+def get_network(scope, group, version, plural, name, namespace='default'):
     api = get_custom_objects_api()
     try:
         if scope == consts.SCOPE_CLUSTER:
+            network = api.get_cluster_custom_object(group, version, plural, name)
+        else:
+            network = api.get_namespaced_custom_object(
+                group, version, namespace, plural, name)
+    except ApiException as e:
+        if e.status in [404]:
+            return
+        else:
+            raise exceptions.KubernetesApiException(
+                action='get', resource='Custom Object: Network')
+    return network
+
+
+def create_network(scope, group, version, plural, body, name, namespace='default'):
+    api = get_custom_objects_api()
+    if get_network(scope, group, version, plural, name, namespace):
+        logging.info('Network %s already exists', name)
+        return
+    try:
+        if scope == consts.SCOPE_CLUSTER:
             api.create_cluster_custom_object(group, version, plural, body)
         else:
             api.create_namespaced_custom_object(