X-Git-Url: https://osm.etsi.org/gitweb/?a=blobdiff_plain;f=n2vc%2Fk8s_helm_conn.py;h=3541db6b52868b3eb8fdc666d5078fecb1832e7e;hb=refs%2Fchanges%2F57%2F8557%2F1;hp=f49159eeb2a20ee216edeb5833286e271510949a;hpb=bc355a11bd4f77d67cec3a5a979c42cbdff5a92e;p=osm%2FN2VC.git

diff --git a/n2vc/k8s_helm_conn.py b/n2vc/k8s_helm_conn.py
index f49159e..3541db6 100644
--- a/n2vc/k8s_helm_conn.py
+++ b/n2vc/k8s_helm_conn.py
@@ -102,6 +102,17 @@ class K8sHelmConnector(K8sConnector):
             namespace: str = 'kube-system',
             reuse_cluster_uuid=None
     ) -> (str, bool):
+        """
+        It prepares a given K8s cluster environment to run Charts on both sides:
+            client (OSM)
+            server (Tiller)
+
+        :param k8s_creds: credentials to access a given K8s cluster, i.e. a valid '.kube/config'
+        :param namespace: optional namespace to be used for helm. By default, 'kube-system' will be used
+        :param reuse_cluster_uuid: existing cluster uuid for reuse
+        :return: uuid of the K8s cluster and True if connector has installed some software in the cluster
+        (on error, an exception will be raised)
+        """
 
         cluster_uuid = reuse_cluster_uuid
         if not cluster_uuid:
@@ -359,8 +370,8 @@ class K8sHelmConnector(K8sConnector):
                 if result is not None:
                     # instance already exists: generate a new one
                     kdu_instance = None
-            except Exception as e:
-                kdu_instance = None
+            except K8sException:
+                pass
 
         # helm repo install
         command = '{} install {} --output yaml --kubeconfig={} --home={} {} {} --name={} {} {}'\
@@ -1102,7 +1113,7 @@ class K8sHelmConnector(K8sConnector):
                 self.debug('Return code: {}'.format(return_code))
 
             if raise_exception_on_error and return_code != 0:
-                raise Exception(output)
+                raise K8sException(output)
 
             if encode_utf8:
                 output = output.encode('utf-8').strip()
@@ -1110,11 +1121,15 @@ class K8sHelmConnector(K8sConnector):
 
             return output, return_code
 
+        except K8sException:
+            raise
         except Exception as e:
             msg = 'Exception executing command: {} -> {}'.format(command, e)
-            if show_error_log:
-                self.error(msg)
-            return '', -1
+            self.error(msg)
+            if raise_exception_on_error:
+                raise K8sException(e) from e
+            else:
+                return '', -1
 
     def _remote_exec(
             self,