From: garciadeblas <gerardo.garciadeblas@telefonica.com>
Date: Wed, 24 Mar 2021 08:22:13 +0000 (+0100)
Subject: Reformat N2VC to standardized format
X-Git-Tag: release-v10.0-start
X-Git-Url: https://osm.etsi.org/gitweb/?a=commitdiff_plain;h=65420dffa860d99bf246b1bc5530999d30bcc22c;p=osm%2FN2VC.git

Reformat N2VC to standardized format

Change-Id: I7bfc2236cd5f059dc1b659e9fb746fef619124b8
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
---

diff --git a/n2vc/juju_watcher.py b/n2vc/juju_watcher.py
index e206e06..9f9520f 100644
--- a/n2vc/juju_watcher.py
+++ b/n2vc/juju_watcher.py
@@ -72,10 +72,7 @@ def application_ready(application: Application) -> bool:
 
 class JujuModelWatcher:
     @staticmethod
-    async def wait_for_model(
-        model: Model,
-        timeout: float = 3600
-    ):
+    async def wait_for_model(model: Model, timeout: float = 3600):
         """
         Wait for all entities in model to reach its final state.
 
diff --git a/n2vc/k8s_conn.py b/n2vc/k8s_conn.py
index f82e032..89805b3 100644
--- a/n2vc/k8s_conn.py
+++ b/n2vc/k8s_conn.py
@@ -33,6 +33,7 @@ class K8sConnector(abc.ABC, Loggable):
     ################################### P U B L I C ####################################
     ####################################################################################
     """
+
     @staticmethod
     def generate_kdu_instance_name(**kwargs):
         raise NotImplementedError("Method not implemented")
@@ -209,11 +210,12 @@ class K8sConnector(abc.ABC, Loggable):
 
     @abc.abstractmethod
     async def scale(
-            self, kdu_instance: str,
-            scale: int,
-            resource_name: str,
-            total_timeout: float = 1800,
-            **kwargs,
+        self,
+        kdu_instance: str,
+        scale: int,
+        resource_name: str,
+        total_timeout: float = 1800,
+        **kwargs,
     ) -> bool:
         """
         Scales an application in KDU instance.
@@ -230,10 +232,10 @@ class K8sConnector(abc.ABC, Loggable):
 
     @abc.abstractmethod
     async def get_scale_count(
-            self,
-            resource_name: str,
-            kdu_instance: str,
-            **kwargs,
+        self,
+        resource_name: str,
+        kdu_instance: str,
+        **kwargs,
     ) -> int:
         """
         Get an application scale count.
@@ -356,10 +358,9 @@ class K8sConnector(abc.ABC, Loggable):
         """
 
     @abc.abstractmethod
-    async def get_services(self,
-                           cluster_uuid: str,
-                           kdu_instance: str,
-                           namespace: str) -> list:
+    async def get_services(
+        self, cluster_uuid: str, kdu_instance: str, namespace: str
+    ) -> list:
         """
         Returns a list of services defined for the specified kdu instance.
 
@@ -377,10 +378,9 @@ class K8sConnector(abc.ABC, Loggable):
         """
 
     @abc.abstractmethod
-    async def get_service(self,
-                          cluster_uuid: str,
-                          service_name: str,
-                          namespace: str = None) -> object:
+    async def get_service(
+        self, cluster_uuid: str, service_name: str, namespace: str = None
+    ) -> object:
         """
         Obtains the data of the specified service in the k8cluster.
 
diff --git a/n2vc/k8s_helm3_conn.py b/n2vc/k8s_helm3_conn.py
index 7d69168..06e5788 100644
--- a/n2vc/k8s_helm3_conn.py
+++ b/n2vc/k8s_helm3_conn.py
@@ -35,14 +35,14 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
     """
 
     def __init__(
-            self,
-            fs: object,
-            db: object,
-            kubectl_command: str = "/usr/bin/kubectl",
-            helm_command: str = "/usr/bin/helm3",
-            log: object = None,
-            on_update_db=None,
-            vca_config: dict = None,
+        self,
+        fs: object,
+        db: object,
+        kubectl_command: str = "/usr/bin/kubectl",
+        helm_command: str = "/usr/bin/helm3",
+        log: object = None,
+        on_update_db=None,
+        vca_config: dict = None,
     ):
         """
         Initializes helm connector for helm v3
@@ -56,29 +56,31 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         """
 
         # parent class
-        K8sHelmBaseConnector.__init__(self,
-                                      db=db,
-                                      log=log,
-                                      fs=fs,
-                                      kubectl_command=kubectl_command,
-                                      helm_command=helm_command,
-                                      on_update_db=on_update_db,
-                                      vca_config=vca_config)
+        K8sHelmBaseConnector.__init__(
+            self,
+            db=db,
+            log=log,
+            fs=fs,
+            kubectl_command=kubectl_command,
+            helm_command=helm_command,
+            on_update_db=on_update_db,
+            vca_config=vca_config,
+        )
 
         self.log.info("K8S Helm3 connector initialized")
 
     async def install(
-            self,
-            cluster_uuid: str,
-            kdu_model: str,
-            kdu_instance: str,
-            atomic: bool = True,
-            timeout: float = 300,
-            params: dict = None,
-            db_dict: dict = None,
-            kdu_name: str = None,
-            namespace: str = None,
-            **kwargs,
+        self,
+        cluster_uuid: str,
+        kdu_model: str,
+        kdu_instance: str,
+        atomic: bool = True,
+        timeout: float = 300,
+        params: dict = None,
+        db_dict: dict = None,
+        kdu_name: str = None,
+        namespace: str = None,
+        **kwargs,
     ):
         """Install a helm chart
 
@@ -207,7 +209,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         paths = {
             "kube_dir": kube_dir,
             "kube_config": config_filename,
-            "cluster_dir": cluster_dir
+            "cluster_dir": cluster_dir,
         }
 
         # 3 - Prepare environment variables
@@ -215,7 +217,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
             "HELM_CACHE_HOME": helm_path_cache,
             "HELM_CONFIG_HOME": helm_path_config,
             "HELM_DATA_HOME": helm_path_data,
-            "KUBECONFIG": config_filename
+            "KUBECONFIG": config_filename,
         }
 
         for file_name, file in paths.items():
@@ -226,8 +228,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
 
         return paths, env
 
-    async def _get_namespaces(self,
-                              cluster_id: str):
+    async def _get_namespaces(self, cluster_id: str):
 
         self.log.debug("get namespaces cluster_id {}".format(cluster_id))
 
@@ -249,9 +250,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
 
         return namespaces
 
-    async def _create_namespace(self,
-                                cluster_id: str,
-                                namespace: str):
+    async def _create_namespace(self, cluster_id: str, namespace: str):
 
         self.log.debug(f"create namespace: {cluster_id} for cluster_id: {namespace}")
 
@@ -280,9 +279,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         command1 = "{} get manifest {} --namespace={}".format(
             self._helm_command, kdu_instance, namespace
         )
-        command2 = "{} get --namespace={} -f -".format(
-            self.kubectl_command, namespace
-        )
+        command2 = "{} get --namespace={} -f -".format(self.kubectl_command, namespace)
         output, _rc = await self._local_async_exec_pipe(
             command1, command2, env=env, raise_exception_on_error=True
         )
@@ -309,9 +306,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
                 self.log.debug("Default repo already present")
                 break
         else:
-            await self.repo_add(cluster_uuid,
-                                "stable",
-                                self._stable_repo_url)
+            await self.repo_add(cluster_uuid, "stable", self._stable_repo_url)
 
         # Returns False as no software needs to be uninstalled
         return False
@@ -327,9 +322,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
             cluster_name=cluster_id, create_if_not_exist=True
         )
 
-        command = "{} list --all-namespaces  --output yaml".format(
-            self._helm_command
-        )
+        command = "{} list --all-namespaces  --output yaml".format(self._helm_command)
         output, _rc = await self._local_async_exec(
             command=command, raise_exception_on_error=True, env=env
         )
@@ -340,8 +333,9 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         else:
             return []
 
-    def _get_inspect_command(self, inspect_command: str, kdu_model: str, repo_str: str,
-                             version: str):
+    def _get_inspect_command(
+        self, inspect_command: str, kdu_model: str, repo_str: str, version: str
+    ):
         inspect_command = "{} show {} {}{} {}".format(
             self._helm_command, inspect_command, kdu_model, repo_str, version
         )
@@ -356,7 +350,9 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         return_text: bool = False,
     ):
 
-        self.log.debug("status of kdu_instance: {}, namespace: {} ".format(kdu_instance, namespace))
+        self.log.debug(
+            "status of kdu_instance: {}, namespace: {} ".format(kdu_instance, namespace)
+        )
 
         if not namespace:
             namespace = "kube-system"
@@ -373,7 +369,7 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
             command=command,
             raise_exception_on_error=True,
             show_error_log=show_error_log,
-            env=env
+            env=env,
         )
 
         if return_text:
@@ -394,8 +390,16 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         # unable to parse 'resources' as currently it is not included in helm3
         return data
 
-    def _get_install_command(self, kdu_model: str, kdu_instance: str, namespace: str,
-                             params_str: str, version: str, atomic: bool, timeout: float) -> str:
+    def _get_install_command(
+        self,
+        kdu_model: str,
+        kdu_instance: str,
+        namespace: str,
+        params_str: str,
+        version: str,
+        atomic: bool,
+        timeout: float,
+    ) -> str:
 
         timeout_str = ""
         if timeout:
@@ -430,8 +434,16 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         )
         return command
 
-    def _get_upgrade_command(self, kdu_model: str, kdu_instance: str, namespace: str,
-                             params_str: str, version: str, atomic: bool, timeout: float) -> str:
+    def _get_upgrade_command(
+        self,
+        kdu_model: str,
+        kdu_instance: str,
+        namespace: str,
+        params_str: str,
+        version: str,
+        atomic: bool,
+        timeout: float,
+    ) -> str:
 
         timeout_str = ""
         if timeout:
@@ -467,7 +479,9 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
         )
         return command
 
-    def _get_rollback_command(self, kdu_instance: str, namespace: str, revision: float) -> str:
+    def _get_rollback_command(
+        self, kdu_instance: str, namespace: str, revision: float
+    ) -> str:
         return "{} rollback {} {} --namespace={} --wait".format(
             self._helm_command, kdu_instance, revision, namespace
         )
@@ -475,7 +489,8 @@ class K8sHelm3Connector(K8sHelmBaseConnector):
     def _get_uninstall_command(self, kdu_instance: str, namespace: str) -> str:
 
         return "{} uninstall {} --namespace={}".format(
-            self._helm_command, kdu_instance, namespace)
+            self._helm_command, kdu_instance, namespace
+        )
 
     def _get_helm_chart_repos_ids(self, cluster_uuid) -> list:
         repo_ids = []
diff --git a/n2vc/k8s_helm_base_conn.py b/n2vc/k8s_helm_base_conn.py
index b5bf640..b3d7bda 100644
--- a/n2vc/k8s_helm_base_conn.py
+++ b/n2vc/k8s_helm_base_conn.py
@@ -42,6 +42,7 @@ class K8sHelmBaseConnector(K8sConnector):
     ################################### P U B L I C ####################################
     ####################################################################################
     """
+
     service_account = "osm"
     _STABLE_REPO_URL = "https://charts.helm.sh/stable"
 
@@ -96,11 +97,15 @@ class K8sHelmBaseConnector(K8sConnector):
         Parses cluster_uuid stored at database that can be either 'namespace:cluster_id' or only
         cluster_id for backward compatibility
         """
-        namespace, _, cluster_id = cluster_uuid.rpartition(':')
+        namespace, _, cluster_id = cluster_uuid.rpartition(":")
         return namespace, cluster_id
 
     async def init_env(
-        self, k8s_creds: str, namespace: str = "kube-system", reuse_cluster_uuid=None, **kwargs,
+        self,
+        k8s_creds: str,
+        namespace: str = "kube-system",
+        reuse_cluster_uuid=None,
+        **kwargs,
     ) -> (str, bool):
         """
         It prepares a given K8s cluster environment to run Charts
@@ -123,7 +128,9 @@ class K8sHelmBaseConnector(K8sConnector):
             cluster_id = str(uuid4())
         cluster_uuid = "{}:{}".format(namespace, cluster_id)
 
-        self.log.debug("Initializing K8S Cluster {}. namespace: {}".format(cluster_id, namespace))
+        self.log.debug(
+            "Initializing K8S Cluster {}. namespace: {}".format(cluster_id, namespace)
+        )
 
         paths, env = self._init_paths_env(
             cluster_name=cluster_id, create_if_not_exist=True
@@ -144,11 +151,14 @@ class K8sHelmBaseConnector(K8sConnector):
         return cluster_uuid, n2vc_installed_sw
 
     async def repo_add(
-            self, cluster_uuid: str, name: str, url: str, repo_type: str = "chart"
+        self, cluster_uuid: str, name: str, url: str, repo_type: str = "chart"
     ):
         _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("Cluster {}, adding {} repository {}. URL: {}".format(
-            cluster_id, repo_type, name, url))
+        self.log.debug(
+            "Cluster {}, adding {} repository {}. URL: {}".format(
+                cluster_id, repo_type, name, url
+            )
+        )
 
         # sync local dir
         self.fs.sync(from_path=cluster_id)
@@ -159,18 +169,18 @@ class K8sHelmBaseConnector(K8sConnector):
         )
 
         # helm repo update
-        command = "{} repo update".format(
-            self._helm_command
-        )
+        command = "{} repo update".format(self._helm_command)
         self.log.debug("updating repo: {}".format(command))
-        await self._local_async_exec(command=command, raise_exception_on_error=False, env=env)
+        await self._local_async_exec(
+            command=command, raise_exception_on_error=False, env=env
+        )
 
         # helm repo add name url
-        command = "{} repo add {} {}".format(
-            self._helm_command, name, url
-        )
+        command = "{} repo add {} {}".format(self._helm_command, name, url)
         self.log.debug("adding repo: {}".format(command))
-        await self._local_async_exec(command=command, raise_exception_on_error=True, env=env)
+        await self._local_async_exec(
+            command=command, raise_exception_on_error=True, env=env
+        )
 
         # sync fs
         self.fs.reverse_sync(from_path=cluster_id)
@@ -193,9 +203,7 @@ class K8sHelmBaseConnector(K8sConnector):
             cluster_name=cluster_id, create_if_not_exist=True
         )
 
-        command = "{} repo list --output yaml".format(
-            self._helm_command
-        )
+        command = "{} repo list --output yaml".format(self._helm_command)
 
         # Set exception to false because if there are no repos just want an empty list
         output, _rc = await self._local_async_exec(
@@ -228,16 +236,20 @@ class K8sHelmBaseConnector(K8sConnector):
             cluster_name=cluster_id, create_if_not_exist=True
         )
 
-        command = "{} repo remove {}".format(
-            self._helm_command, name
+        command = "{} repo remove {}".format(self._helm_command, name)
+        await self._local_async_exec(
+            command=command, raise_exception_on_error=True, env=env
         )
-        await self._local_async_exec(command=command, raise_exception_on_error=True, env=env)
 
         # sync fs
         self.fs.reverse_sync(from_path=cluster_id)
 
     async def reset(
-            self, cluster_uuid: str, force: bool = False, uninstall_sw: bool = False, **kwargs
+        self,
+        cluster_uuid: str,
+        force: bool = False,
+        uninstall_sw: bool = False,
+        **kwargs,
     ) -> bool:
         """Reset a cluster
 
@@ -250,8 +262,11 @@ class K8sHelmBaseConnector(K8sConnector):
         :return: Returns True if successful or raises an exception.
         """
         namespace, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
-        self.log.debug("Resetting K8s environment. cluster uuid: {} uninstall={}"
-                       .format(cluster_id, uninstall_sw))
+        self.log.debug(
+            "Resetting K8s environment. cluster uuid: {} uninstall={}".format(
+                cluster_id, uninstall_sw
+            )
+        )
 
         # sync local dir
         self.fs.sync(from_path=cluster_id)
@@ -276,14 +291,18 @@ class K8sHelmBaseConnector(K8sConnector):
                             # that in some cases of previously installed helm releases it
                             # raised an error
                             self.log.warn(
-                                "Error uninstalling release {}: {}".format(kdu_instance, e)
+                                "Error uninstalling release {}: {}".format(
+                                    kdu_instance, e
+                                )
                             )
                 else:
                     msg = (
                         "Cluster uuid: {} has releases and not force. Leaving K8s helm environment"
                     ).format(cluster_id)
                     self.log.warn(msg)
-                    uninstall_sw = False  # Allow to remove k8s cluster without removing Tiller
+                    uninstall_sw = (
+                        False  # Allow to remove k8s cluster without removing Tiller
+                    )
 
         if uninstall_sw:
             await self._uninstall_sw(cluster_id, namespace)
@@ -298,18 +317,18 @@ class K8sHelmBaseConnector(K8sConnector):
         return True
 
     async def _install_impl(
-            self,
-            cluster_id: str,
-            kdu_model: str,
-            paths: dict,
-            env: dict,
-            kdu_instance: str,
-            atomic: bool = True,
-            timeout: float = 300,
-            params: dict = None,
-            db_dict: dict = None,
-            kdu_name: str = None,
-            namespace: str = None,
+        self,
+        cluster_id: str,
+        kdu_model: str,
+        paths: dict,
+        env: dict,
+        kdu_instance: str,
+        atomic: bool = True,
+        timeout: float = 300,
+        params: dict = None,
+        db_dict: dict = None,
+        kdu_name: str = None,
+        namespace: str = None,
     ):
         # params to str
         params_str, file_to_delete = self._params_to_file_option(
@@ -324,8 +343,9 @@ class K8sHelmBaseConnector(K8sConnector):
                 version = str(parts[1])
                 kdu_model = parts[0]
 
-        command = self._get_install_command(kdu_model, kdu_instance, namespace,
-                                            params_str, version, atomic, timeout)
+        command = self._get_install_command(
+            kdu_model, kdu_instance, namespace, params_str, version, atomic, timeout
+        )
 
         self.log.debug("installing: {}".format(command))
 
@@ -422,8 +442,15 @@ class K8sHelmBaseConnector(K8sConnector):
                 version = str(parts[1])
                 kdu_model = parts[0]
 
-        command = self._get_upgrade_command(kdu_model, kdu_instance, instance_info["namespace"],
-                                            params_str, version, atomic, timeout)
+        command = self._get_upgrade_command(
+            kdu_model,
+            kdu_instance,
+            instance_info["namespace"],
+            params_str,
+            version,
+            atomic,
+            timeout,
+        )
 
         self.log.debug("upgrading: {}".format(command))
 
@@ -495,20 +522,20 @@ class K8sHelmBaseConnector(K8sConnector):
             return 0
 
     async def scale(
-            self,
-            kdu_instance: str,
-            scale: int,
-            resource_name: str,
-            total_timeout: float = 1800,
-            **kwargs,
+        self,
+        kdu_instance: str,
+        scale: int,
+        resource_name: str,
+        total_timeout: float = 1800,
+        **kwargs,
     ):
         raise NotImplementedError("Method not implemented")
 
     async def get_scale_count(
-            self,
-            resource_name: str,
-            kdu_instance: str,
-            **kwargs,
+        self,
+        resource_name: str,
+        kdu_instance: str,
+        **kwargs,
     ):
         raise NotImplementedError("Method not implemented")
 
@@ -536,8 +563,9 @@ class K8sHelmBaseConnector(K8sConnector):
             cluster_name=cluster_id, create_if_not_exist=True
         )
 
-        command = self._get_rollback_command(kdu_instance, instance_info["namespace"],
-                                             revision)
+        command = self._get_rollback_command(
+            kdu_instance, instance_info["namespace"], revision
+        )
 
         self.log.debug("rolling_back: {}".format(command))
 
@@ -611,9 +639,7 @@ class K8sHelmBaseConnector(K8sConnector):
 
         _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
         self.log.debug(
-            "uninstall kdu_instance {} from cluster {}".format(
-                kdu_instance, cluster_id
-            )
+            "uninstall kdu_instance {} from cluster {}".format(kdu_instance, cluster_id)
         )
 
         # sync local dir
@@ -696,10 +722,9 @@ class K8sHelmBaseConnector(K8sConnector):
             "different from rollback, upgrade and status"
         )
 
-    async def get_services(self,
-                           cluster_uuid: str,
-                           kdu_instance: str,
-                           namespace: str) -> list:
+    async def get_services(
+        self, cluster_uuid: str, kdu_instance: str, namespace: str
+    ) -> list:
         """
         Returns a list of services defined for the specified kdu instance.
 
@@ -739,14 +764,14 @@ class K8sHelmBaseConnector(K8sConnector):
 
         return service_list
 
-    async def get_service(self,
-                          cluster_uuid: str,
-                          service_name: str,
-                          namespace: str) -> object:
+    async def get_service(
+        self, cluster_uuid: str, service_name: str, namespace: str
+    ) -> object:
 
         self.log.debug(
             "get service, service_name: {}, namespace: {}, cluster_uuid: {}".format(
-                service_name, namespace, cluster_uuid)
+                service_name, namespace, cluster_uuid
+            )
         )
 
         _, cluster_id = self._get_namespace_cluster_id(cluster_uuid)
@@ -803,8 +828,11 @@ class K8sHelmBaseConnector(K8sConnector):
                 break
         else:
             # instance does not exist
-            raise K8sException("Instance name: {} not found in cluster: {}".format(
-                kdu_instance, cluster_id))
+            raise K8sException(
+                "Instance name: {} not found in cluster: {}".format(
+                    kdu_instance, cluster_id
+                )
+            )
 
         status = await self._status_kdu(
             cluster_id=cluster_id,
@@ -863,14 +891,19 @@ class K8sHelmBaseConnector(K8sConnector):
                     repo_id = db_repo.get("_id")
                     if curr_repo_url != db_repo["url"]:
                         if curr_repo_url:
-                            self.log.debug("repo {} url changed, delete and and again".format(
-                                db_repo["url"]))
+                            self.log.debug(
+                                "repo {} url changed, delete and and again".format(
+                                    db_repo["url"]
+                                )
+                            )
                             await self.repo_remove(cluster_uuid, db_repo["name"])
                             deleted_repo_list.append(repo_id)
 
                         # add repo
                         self.log.debug("add repo {}".format(db_repo["name"]))
-                        await self.repo_add(cluster_uuid, db_repo["name"], db_repo["url"])
+                        await self.repo_add(
+                            cluster_uuid, db_repo["name"], db_repo["url"]
+                        )
                         added_repo_dict[repo_id] = db_repo["name"]
                 except Exception as e:
                     raise K8sException(
@@ -945,22 +978,30 @@ class K8sHelmBaseConnector(K8sConnector):
         """
 
     @abc.abstractmethod
-    async def _status_kdu(self, cluster_id: str, kdu_instance: str, namespace: str = None,
-                          show_error_log: bool = False, return_text: bool = False):
+    async def _status_kdu(
+        self,
+        cluster_id: str,
+        kdu_instance: str,
+        namespace: str = None,
+        show_error_log: bool = False,
+        return_text: bool = False,
+    ):
         """
         Implements the helm version dependent method to obtain status of a helm instance
         """
 
     @abc.abstractmethod
-    def _get_install_command(self, kdu_model, kdu_instance, namespace,
-                             params_str, version, atomic, timeout) -> str:
+    def _get_install_command(
+        self, kdu_model, kdu_instance, namespace, params_str, version, atomic, timeout
+    ) -> str:
         """
         Obtain command to be executed to delete the indicated instance
         """
 
     @abc.abstractmethod
-    def _get_upgrade_command(self, kdu_model, kdu_instance, namespace,
-                             params_str, version, atomic, timeout) -> str:
+    def _get_upgrade_command(
+        self, kdu_model, kdu_instance, namespace, params_str, version, atomic, timeout
+    ) -> str:
         """
         Obtain command to be executed to upgrade the indicated instance
         """
@@ -978,8 +1019,9 @@ class K8sHelmBaseConnector(K8sConnector):
         """
 
     @abc.abstractmethod
-    def _get_inspect_command(self, show_command: str, kdu_model: str, repo_str: str,
-                             version: str):
+    def _get_inspect_command(
+        self, show_command: str, kdu_model: str, repo_str: str, version: str
+    ):
         """
         Obtain command to be executed to obtain information about the kdu
         """
@@ -1122,11 +1164,13 @@ class K8sHelmBaseConnector(K8sConnector):
         raise_exception_on_error: bool = False,
         show_error_log: bool = True,
         encode_utf8: bool = False,
-        env: dict = None
+        env: dict = None,
     ) -> (str, int):
 
         command = K8sHelmBaseConnector._remove_multiple_spaces(command)
-        self.log.debug("Executing async local command: {}, env: {}".format(command, env))
+        self.log.debug(
+            "Executing async local command: {}, env: {}".format(command, env)
+        )
 
         # split command
         command = shlex.split(command)
@@ -1137,8 +1181,10 @@ class K8sHelmBaseConnector(K8sConnector):
 
         try:
             process = await asyncio.create_subprocess_exec(
-                *command, stdout=asyncio.subprocess.PIPE, stderr=asyncio.subprocess.PIPE,
-                env=environ
+                *command,
+                stdout=asyncio.subprocess.PIPE,
+                stderr=asyncio.subprocess.PIPE,
+                env=environ,
             )
 
             # wait for command terminate
@@ -1182,18 +1228,22 @@ class K8sHelmBaseConnector(K8sConnector):
             else:
                 return "", -1
 
-    async def _local_async_exec_pipe(self,
-                                     command1: str,
-                                     command2: str,
-                                     raise_exception_on_error: bool = True,
-                                     show_error_log: bool = True,
-                                     encode_utf8: bool = False,
-                                     env: dict = None):
+    async def _local_async_exec_pipe(
+        self,
+        command1: str,
+        command2: str,
+        raise_exception_on_error: bool = True,
+        show_error_log: bool = True,
+        encode_utf8: bool = False,
+        env: dict = None,
+    ):
 
         command1 = K8sHelmBaseConnector._remove_multiple_spaces(command1)
         command2 = K8sHelmBaseConnector._remove_multiple_spaces(command2)
         command = "{} | {}".format(command1, command2)
-        self.log.debug("Executing async local command: {}, env: {}".format(command, env))
+        self.log.debug(
+            "Executing async local command: {}, env: {}".format(command, env)
+        )
 
         # split command
         command1 = shlex.split(command1)
@@ -1207,9 +1257,9 @@ class K8sHelmBaseConnector(K8sConnector):
             read, write = os.pipe()
             await asyncio.create_subprocess_exec(*command1, stdout=write, env=environ)
             os.close(write)
-            process_2 = await asyncio.create_subprocess_exec(*command2, stdin=read,
-                                                             stdout=asyncio.subprocess.PIPE,
-                                                             env=environ)
+            process_2 = await asyncio.create_subprocess_exec(
+                *command2, stdin=read, stdout=asyncio.subprocess.PIPE, env=environ
+            )
             os.close(read)
             stdout, stderr = await process_2.communicate()
 
@@ -1285,7 +1335,7 @@ class K8sHelmBaseConnector(K8sConnector):
             "name": service_name,
             "type": self._get_deep(data, ("spec", "type")),
             "ports": self._get_deep(data, ("spec", "ports")),
-            "cluster_ip": self._get_deep(data, ("spec", "clusterIP"))
+            "cluster_ip": self._get_deep(data, ("spec", "clusterIP")),
         }
         if service["type"] == "LoadBalancer":
             ip_map_list = self._get_deep(data, ("status", "loadBalancer", "ingress"))
@@ -1317,7 +1367,9 @@ class K8sHelmBaseConnector(K8sConnector):
                 version = "--version {}".format(str(parts[1]))
                 kdu_model = parts[0]
 
-        full_command = self._get_inspect_command(inspect_command, kdu_model, repo_str, version)
+        full_command = self._get_inspect_command(
+            inspect_command, kdu_model, repo_str, version
+        )
         output, _rc = await self._local_async_exec(
             command=full_command, encode_utf8=True
         )
@@ -1338,11 +1390,13 @@ class K8sHelmBaseConnector(K8sConnector):
             try:
                 await asyncio.sleep(check_every)
                 detailed_status = await self._status_kdu(
-                    cluster_id=cluster_id, kdu_instance=kdu_instance, namespace=namespace,
-                    return_text=False
+                    cluster_id=cluster_id,
+                    kdu_instance=kdu_instance,
+                    namespace=namespace,
+                    return_text=False,
                 )
                 status = detailed_status.get("info").get("description")
-                self.log.debug('KDU {} STATUS: {}.'.format(kdu_instance, status))
+                self.log.debug("KDU {} STATUS: {}.".format(kdu_instance, status))
                 # write status to db
                 result = await self.write_app_status_to_db(
                     db_dict=db_dict,
@@ -1357,7 +1411,9 @@ class K8sHelmBaseConnector(K8sConnector):
                 self.log.debug("Task cancelled")
                 return
             except Exception as e:
-                self.log.debug("_store_status exception: {}".format(str(e)), exc_info=True)
+                self.log.debug(
+                    "_store_status exception: {}".format(str(e)), exc_info=True
+                )
                 pass
             finally:
                 if run_once:
@@ -1368,9 +1424,7 @@ class K8sHelmBaseConnector(K8sConnector):
     def _params_to_file_option(self, cluster_id: str, params: dict) -> (str, str):
 
         if params and len(params) > 0:
-            self._init_paths_env(
-                cluster_name=cluster_id, create_if_not_exist=True
-            )
+            self._init_paths_env(cluster_name=cluster_id, create_if_not_exist=True)
 
             def get_random_number():
                 r = random.randrange(start=1, stop=99999999)
@@ -1417,11 +1471,11 @@ class K8sHelmBaseConnector(K8sConnector):
         # check embeded chart (file or dir)
         if chart_name.startswith("/"):
             # extract file or directory name
-            chart_name = chart_name[chart_name.rfind("/") + 1:]
+            chart_name = chart_name[chart_name.rfind("/") + 1 :]
         # check URL
         elif "://" in chart_name:
             # extract last portion of URL
-            chart_name = chart_name[chart_name.rfind("/") + 1:]
+            chart_name = chart_name[chart_name.rfind("/") + 1 :]
 
         name = ""
         for c in chart_name:
diff --git a/n2vc/k8s_helm_conn.py b/n2vc/k8s_helm_conn.py
index d443f8d..46a0e99 100644
--- a/n2vc/k8s_helm_conn.py
+++ b/n2vc/k8s_helm_conn.py
@@ -73,7 +73,8 @@ class K8sHelmConnector(K8sHelmBaseConnector):
         # initialize helm client-only
         self.log.debug("Initializing helm client-only...")
         command = "{} init --client-only --stable-repo-url {} ".format(
-            self._helm_command, self._stable_repo_url)
+            self._helm_command, self._stable_repo_url
+        )
         try:
             asyncio.ensure_future(
                 self._local_async_exec(command=command, raise_exception_on_error=False)
@@ -89,17 +90,17 @@ class K8sHelmConnector(K8sHelmBaseConnector):
         self.log.info("K8S Helm2 connector initialized")
 
     async def install(
-            self,
-            cluster_uuid: str,
-            kdu_model: str,
-            kdu_instance: str,
-            atomic: bool = True,
-            timeout: float = 300,
-            params: dict = None,
-            db_dict: dict = None,
-            kdu_name: str = None,
-            namespace: str = None,
-            **kwargs,
+        self,
+        cluster_uuid: str,
+        kdu_model: str,
+        kdu_instance: str,
+        atomic: bool = True,
+        timeout: float = 300,
+        params: dict = None,
+        db_dict: dict = None,
+        kdu_name: str = None,
+        namespace: str = None,
+        **kwargs,
     ):
         """
         Deploys of a new KDU instance. It would implicitly rely on the `install` call
@@ -247,8 +248,9 @@ class K8sHelmConnector(K8sHelmBaseConnector):
 
         return services
 
-    async def _cluster_init(self, cluster_id: str, namespace: str,
-                            paths: dict, env: dict):
+    async def _cluster_init(
+        self, cluster_id: str, namespace: str, paths: dict, env: dict
+    ):
         """
         Implements the helm version dependent cluster initialization:
         For helm2 it initialized tiller environment if needed
@@ -304,7 +306,7 @@ class K8sHelmConnector(K8sHelmBaseConnector):
                 namespace,
                 paths["helm_dir"],
                 self.service_account,
-                self._stable_repo_url
+                self._stable_repo_url,
             )
             _, _rc = await self._local_async_exec(
                 command=command, raise_exception_on_error=True, env=env
@@ -339,11 +341,8 @@ class K8sHelmConnector(K8sHelmBaseConnector):
         for repo in repo_list:
             if repo["name"] == "stable" and repo["url"] != self._stable_repo_url:
                 self.log.debug("Add new stable repo url: {}")
-                await self.repo_remove(cluster_uuid,
-                                       "stable")
-                await self.repo_add(cluster_uuid,
-                                    "stable",
-                                    self._stable_repo_url)
+                await self.repo_remove(cluster_uuid, "stable")
+                await self.repo_add(cluster_uuid, "stable", self._stable_repo_url)
                 break
 
         return n2vc_installed_sw
@@ -434,8 +433,9 @@ class K8sHelmConnector(K8sHelmBaseConnector):
         else:
             return []
 
-    def _get_inspect_command(self, show_command: str, kdu_model: str, repo_str: str,
-                             version: str):
+    def _get_inspect_command(
+        self, show_command: str, kdu_model: str, repo_str: str, version: str
+    ):
         inspect_command = "{} inspect {} {}{} {}".format(
             self._helm_command, show_command, kdu_model, repo_str, version
         )
@@ -615,15 +615,15 @@ class K8sHelmConnector(K8sHelmBaseConnector):
         if version:
             version_str = "--version {}".format(version)
 
-        command = "{helm} upgrade {atomic} --output yaml {params} {timeout} {name} {model} {ver}"\
-            .format(helm=self._helm_command,
-                    atomic=atomic_str,
-                    params=params_str,
-                    timeout=timeout_str,
-                    name=kdu_instance,
-                    model=kdu_model,
-                    ver=version_str
-                    )
+        command = "{helm} upgrade {atomic} --output yaml {params} {timeout} {name} {model} {ver}".format(
+            helm=self._helm_command,
+            atomic=atomic_str,
+            params=params_str,
+            timeout=timeout_str,
+            name=kdu_instance,
+            model=kdu_model,
+            ver=version_str,
+        )
         return command
 
     def _get_rollback_command(self, kdu_instance, namespace, revision) -> str:
diff --git a/n2vc/k8s_juju_conn.py b/n2vc/k8s_juju_conn.py
index 3a2d9e3..24b3142 100644
--- a/n2vc/k8s_juju_conn.py
+++ b/n2vc/k8s_juju_conn.py
@@ -371,17 +371,17 @@ class K8sJujuConnector(K8sConnector):
                 cluster_uuid,
                 kdu_instance,
                 filter=db_dict["filter"],
-                vca_id=kwargs.get("vca_id")
+                vca_id=kwargs.get("vca_id"),
             )
         return True
 
     async def scale(
-            self,
-            kdu_instance: str,
-            scale: int,
-            resource_name: str,
-            total_timeout: float = 1800,
-            **kwargs,
+        self,
+        kdu_instance: str,
+        scale: int,
+        resource_name: str,
+        total_timeout: float = 1800,
+        **kwargs,
     ) -> bool:
         """Scale an application in a model
 
@@ -402,20 +402,21 @@ class K8sJujuConnector(K8sConnector):
                 model_name=kdu_instance,
                 application_name=resource_name,
                 scale=scale,
-                total_timeout=total_timeout
+                total_timeout=total_timeout,
             )
         except Exception as e:
             error_msg = "Error scaling application {} in kdu instance {}: {}".format(
-                resource_name, kdu_instance, e)
+                resource_name, kdu_instance, e
+            )
             self.log.error(error_msg)
             raise K8sException(message=error_msg)
         return True
 
     async def get_scale_count(
-            self,
-            resource_name: str,
-            kdu_instance: str,
-            **kwargs,
+        self,
+        resource_name: str,
+        kdu_instance: str,
+        **kwargs,
     ) -> int:
         """Get an application scale count
 
@@ -431,7 +432,8 @@ class K8sJujuConnector(K8sConnector):
             return len(status.applications[resource_name].units)
         except Exception as e:
             error_msg = "Error getting scale count from application {} in kdu instance {}: {}".format(
-                resource_name, kdu_instance, e)
+                resource_name, kdu_instance, e
+            )
             self.log.error(error_msg)
             raise K8sException(message=error_msg)
 
@@ -577,7 +579,9 @@ class K8sJujuConnector(K8sConnector):
                     "status is not completed: {} output: {}".format(status, output)
                 )
             if self.on_update_db:
-                await self.on_update_db(cluster_uuid, kdu_instance, filter=db_dict["filter"])
+                await self.on_update_db(
+                    cluster_uuid, kdu_instance, filter=db_dict["filter"]
+                )
 
             return output
 
@@ -711,16 +715,19 @@ class K8sJujuConnector(K8sConnector):
         try:
             for model_name in vcastatus:
                 # Adding executed actions
-                vcastatus[model_name]["executedActions"] = \
-                    await libjuju.get_executed_actions(kdu_instance)
+                vcastatus[model_name][
+                    "executedActions"
+                ] = await libjuju.get_executed_actions(kdu_instance)
 
                 for application in vcastatus[model_name]["applications"]:
                     # Adding application actions
-                    vcastatus[model_name]["applications"][application]["actions"] = \
-                        await libjuju.get_actions(application, kdu_instance)
+                    vcastatus[model_name]["applications"][application][
+                        "actions"
+                    ] = await libjuju.get_actions(application, kdu_instance)
                     # Adding application configs
-                    vcastatus[model_name]["applications"][application]["configs"] = \
-                        await libjuju.get_application_configs(kdu_instance, application)
+                    vcastatus[model_name]["applications"][application][
+                        "configs"
+                    ] = await libjuju.get_application_configs(kdu_instance, application)
 
         except Exception as e:
             self.log.debug("Error in updating vca status: {}".format(str(e)))
diff --git a/n2vc/libjuju.py b/n2vc/libjuju.py
index cb2e0ba..ce1c9df 100644
--- a/n2vc/libjuju.py
+++ b/n2vc/libjuju.py
@@ -273,7 +273,9 @@ class Libjuju:
         """
         return await controller.get_model(model_name)
 
-    async def model_exists(self, model_name: str, controller: Controller = None) -> bool:
+    async def model_exists(
+        self, model_name: str, controller: Controller = None
+    ) -> bool:
         """
         Check if model exists
 
@@ -662,11 +664,11 @@ class Libjuju:
         return application
 
     async def scale_application(
-            self,
-            model_name: str,
-            application_name: str,
-            scale: int = 1,
-            total_timeout: float = None,
+        self,
+        model_name: str,
+        application_name: str,
+        scale: int = 1,
+        total_timeout: float = None,
     ):
         """
         Scale application (K8s)
@@ -693,8 +695,7 @@ class Libjuju:
             await application.scale(scale=scale)
             # Wait until application is scaled in model
             self.log.debug(
-                "Waiting for application {} to be scaled in model {}...".format
-                (
+                "Waiting for application {} to be scaled in model {}...".format(
                     application_name, model_name
                 )
             )
@@ -707,7 +708,9 @@ class Libjuju:
                 # wait until application unit count and scale count are equal.
                 # Because there is a delay before scaling triggers in Juju model.
                 if application_scale == scale:
-                    await JujuModelWatcher.wait_for_model(model=model, timeout=total_timeout)
+                    await JujuModelWatcher.wait_for_model(
+                        model=model, timeout=total_timeout
+                    )
                     self.log.debug(
                         "Application {} is scaled in model {}".format(
                             application_name, model_name
diff --git a/n2vc/loggable.py b/n2vc/loggable.py
index b3b98da..d588a1d 100644
--- a/n2vc/loggable.py
+++ b/n2vc/loggable.py
@@ -115,7 +115,7 @@ class Loggable:
         if not include_path:
             i = filename.rfind("/")
             if i > 0:
-                filename = filename[i + 1:]
+                filename = filename[i + 1 :]
 
         # datetime
         dt = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S.%f")
diff --git a/n2vc/n2vc_conn.py b/n2vc/n2vc_conn.py
index bfdf460..6b0df89 100644
--- a/n2vc/n2vc_conn.py
+++ b/n2vc/n2vc_conn.py
@@ -294,14 +294,12 @@ class N2VCConnector(abc.ABC, Loggable):
     # TODO
     @abc.abstractmethod
     async def remove_relation(self):
-        """
-        """
+        """ """
 
     # TODO
     @abc.abstractmethod
     async def deregister_execution_environments(self):
-        """
-        """
+        """ """
 
     @abc.abstractmethod
     async def delete_namespace(
@@ -464,7 +462,9 @@ class N2VCConnector(abc.ABC, Loggable):
                         the_table, the_filter, the_path, update_dict, vca_id=vca_id
                     )
                 else:
-                    self.on_update_db(the_table, the_filter, the_path, update_dict, vca_id=vca_id)
+                    self.on_update_db(
+                        the_table, the_filter, the_path, update_dict, vca_id=vca_id
+                    )
 
         except DbException as e:
             if e.http_code == HTTPStatus.NOT_FOUND:
diff --git a/n2vc/n2vc_juju_conn.py b/n2vc/n2vc_juju_conn.py
index 99661f5..eed2f30 100644
--- a/n2vc/n2vc_juju_conn.py
+++ b/n2vc/n2vc_juju_conn.py
@@ -143,15 +143,18 @@ class N2VCJujuConnector(N2VCConnector):
             libjuju = await self._get_libjuju(vca_id)
             for model_name in vcastatus:
                 # Adding executed actions
-                vcastatus[model_name]["executedActions"] = \
-                    await libjuju.get_executed_actions(model_name)
+                vcastatus[model_name][
+                    "executedActions"
+                ] = await libjuju.get_executed_actions(model_name)
                 for application in vcastatus[model_name]["applications"]:
                     # Adding application actions
-                    vcastatus[model_name]["applications"][application]["actions"] = \
-                        await libjuju.get_actions(application, model_name)
+                    vcastatus[model_name]["applications"][application][
+                        "actions"
+                    ] = await libjuju.get_actions(application, model_name)
                     # Adding application configs
-                    vcastatus[model_name]["applications"][application]["configs"] = \
-                        await libjuju.get_application_configs(model_name, application)
+                    vcastatus[model_name]["applications"][application][
+                        "configs"
+                    ] = await libjuju.get_application_configs(model_name, application)
         except Exception as e:
             self.log.debug("Error in updating vca status: {}".format(str(e)))
 
diff --git a/n2vc/provisioner.py b/n2vc/provisioner.py
index 91d5c04..e2b51b9 100644
--- a/n2vc/provisioner.py
+++ b/n2vc/provisioner.py
@@ -250,7 +250,8 @@ class AsyncSSHProvisioner:
             params.series = hw["series"]
             params.instance_id = "manual:{}".format(self.host)
             params.nonce = "manual:{}:{}".format(
-                self.host, str(uuid.uuid4()),
+                self.host,
+                str(uuid.uuid4()),
             )  # a nop for Juju w/manual machines
             params.hardware_characteristics = {
                 "arch": hw["arch"],
@@ -261,7 +262,9 @@ class AsyncSSHProvisioner:
 
         return params
 
-    async def install_agent(self, connection, nonce, machine_id, proxy=None, series=None):
+    async def install_agent(
+        self, connection, nonce, machine_id, proxy=None, series=None
+    ):
         """
         :param object connection: Connection to Juju API
         :param str nonce: The nonce machine specification
@@ -297,7 +300,9 @@ class AsyncSSHProvisioner:
             - '[::1]:17070'
         """
         if proxy:
-            m = re.search(r"apiaddresses:\n- (\d+\.\d+\.\d+\.\d+):17070", results.script)
+            m = re.search(
+                r"apiaddresses:\n- (\d+\.\d+\.\d+\.\d+):17070", results.script
+            )
             apiaddress = m.group(1)
 
             """Add IP Table rule
@@ -326,8 +331,10 @@ class AsyncSSHProvisioner:
                     stdout, stderr = await self._run_configure_script(script)
                     break
                 except Exception as e:
-                    self.log.debug("Waiting for DNAT rules to be applied and saved, "
-                                   "sleeping {} seconds".format(delay))
+                    self.log.debug(
+                        "Waiting for DNAT rules to be applied and saved, "
+                        "sleeping {} seconds".format(delay)
+                    )
                     if attempts > retry:
                         raise e
                     else:
diff --git a/n2vc/tests/unit/test_k8s_helm3_conn.py b/n2vc/tests/unit/test_k8s_helm3_conn.py
index 3b81323..c175b7a 100644
--- a/n2vc/tests/unit/test_k8s_helm3_conn.py
+++ b/n2vc/tests/unit/test_k8s_helm3_conn.py
@@ -45,10 +45,9 @@ class TestK8sHelm3Conn(asynctest.TestCase):
             "HELM_CACHE_HOME": "{}/.cache/helm".format(cluster_dir),
             "HELM_CONFIG_HOME": "{}/.config/helm".format(cluster_dir),
             "HELM_DATA_HOME": "{}/.local/share/helm".format(cluster_dir),
-            "KUBECONFIG": "{}/.kube/config".format(cluster_dir)
+            "KUBECONFIG": "{}/.kube/config".format(cluster_dir),
         }
-        self.helm_conn = K8sHelm3Connector(self.fs, self.db,
-                                           log=self.logger)
+        self.helm_conn = K8sHelm3Connector(self.fs, self.db, log=self.logger)
         self.logger.debug("Set up executed")
 
     @asynctest.fail_on(active_handles=True)
@@ -60,16 +59,25 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         self.helm_conn.repo_add = asynctest.CoroutineMock()
 
         k8scluster_uuid, installed = await self.helm_conn.init_env(
-            k8s_creds, namespace=self.namespace, reuse_cluster_uuid=self.cluster_id)
+            k8s_creds, namespace=self.namespace, reuse_cluster_uuid=self.cluster_id
+        )
 
-        self.assertEqual(k8scluster_uuid, "{}:{}".format(self.namespace, self.cluster_id),
-                         "Check cluster_uuid format: <namespace>.<cluster_id>")
+        self.assertEqual(
+            k8scluster_uuid,
+            "{}:{}".format(self.namespace, self.cluster_id),
+            "Check cluster_uuid format: <namespace>.<cluster_id>",
+        )
         self.helm_conn._get_namespaces.assert_called_once_with(self.cluster_id)
-        self.helm_conn._create_namespace.assert_called_once_with(self.cluster_id, self.namespace)
+        self.helm_conn._create_namespace.assert_called_once_with(
+            self.cluster_id, self.namespace
+        )
         self.helm_conn.repo_list.assert_called_once_with(k8scluster_uuid)
         self.helm_conn.repo_add.assert_called_once_with(
-            k8scluster_uuid, "stable", "https://charts.helm.sh/stable")
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+            k8scluster_uuid, "stable", "https://charts.helm.sh/stable"
+        )
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         self.logger.debug(f"cluster_uuid: {k8scluster_uuid}")
 
     @asynctest.fail_on(active_handles=True)
@@ -81,24 +89,42 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         await self.helm_conn.repo_add(self.cluster_uuid, repo_name, repo_url)
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.assertEqual(self.helm_conn._local_async_exec.call_count, 2,
-                         "local_async_exec expected 2 calls, called {}".format(
-                             self.helm_conn._local_async_exec.call_count))
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.assertEqual(
+            self.helm_conn._local_async_exec.call_count,
+            2,
+            "local_async_exec expected 2 calls, called {}".format(
+                self.helm_conn._local_async_exec.call_count
+            ),
+        )
 
         repo_update_command = "/usr/bin/helm3 repo update"
         repo_add_command = "/usr/bin/helm3 repo add {} {}".format(repo_name, repo_url)
         calls = self.helm_conn._local_async_exec.call_args_list
         call0_kargs = calls[0][1]
-        self.assertEqual(call0_kargs.get("command"), repo_update_command,
-                         "Invalid repo update command: {}".format(call0_kargs.get("command")))
-        self.assertEqual(call0_kargs.get("env"), self.env,
-                         "Invalid env for update command: {}".format(call0_kargs.get("env")))
+        self.assertEqual(
+            call0_kargs.get("command"),
+            repo_update_command,
+            "Invalid repo update command: {}".format(call0_kargs.get("command")),
+        )
+        self.assertEqual(
+            call0_kargs.get("env"),
+            self.env,
+            "Invalid env for update command: {}".format(call0_kargs.get("env")),
+        )
         call1_kargs = calls[1][1]
-        self.assertEqual(call1_kargs.get("command"), repo_add_command,
-                         "Invalid repo add command: {}".format(call1_kargs.get("command")))
-        self.assertEqual(call1_kargs.get("env"), self.env,
-                         "Invalid env for add command: {}".format(call1_kargs.get("env")))
+        self.assertEqual(
+            call1_kargs.get("command"),
+            repo_add_command,
+            "Invalid repo add command: {}".format(call1_kargs.get("command")),
+        )
+        self.assertEqual(
+            call1_kargs.get("env"),
+            self.env,
+            "Invalid env for add command: {}".format(call1_kargs.get("env")),
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_repo_list(self):
@@ -108,10 +134,13 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         await self.helm_conn.repo_list(self.cluster_uuid)
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm3 repo list --output yaml"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, env=self.env,
-                                                            raise_exception_on_error=False)
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_repo_remove(self):
@@ -121,10 +150,13 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         await self.helm_conn.repo_remove(self.cluster_uuid, repo_name)
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm3 repo remove {}".format(repo_name)
-        self.helm_conn._local_async_exec.assert_called_with(command=command, env=self.env,
-                                                            raise_exception_on_error=True)
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_install(self):
@@ -145,25 +177,33 @@ class TestK8sHelm3Conn(asynctest.TestCase):
             self.kdu_instance,
             atomic=True,
             namespace=self.namespace,
-            db_dict=db_dict
+            db_dict=db_dict,
         )
 
         self.helm_conn._get_namespaces.assert_called_once()
-        self.helm_conn._create_namespace.assert_called_once_with(self.cluster_id, self.namespace)
+        self.helm_conn._create_namespace.assert_called_once_with(
+            self.cluster_id, self.namespace
+        )
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn._store_status.assert_called_with(cluster_id=self.cluster_id,
-                                                        kdu_instance=kdu_instance,
-                                                        namespace=self.namespace,
-                                                        db_dict=db_dict,
-                                                        operation="install",
-                                                        run_once=True,
-                                                        check_every=0)
-        command = "/usr/bin/helm3 install stable-openldap-0005399828 --atomic --output yaml   " \
-                  "--timeout 300s --namespace testk8s stable/openldap --version 1.2.2"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=False)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.helm_conn._store_status.assert_called_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="install",
+            run_once=True,
+            check_every=0,
+        )
+        command = (
+            "/usr/bin/helm3 install stable-openldap-0005399828 --atomic --output yaml   "
+            "--timeout 300s --namespace testk8s stable/openldap --version 1.2.2"
+        )
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_upgrade(self):
@@ -175,32 +215,38 @@ class TestK8sHelm3Conn(asynctest.TestCase):
             "name": kdu_instance,
             "namespace": self.namespace,
             "revision": 1,
-            "status": "DEPLOYED"
+            "status": "DEPLOYED",
         }
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
         self.helm_conn._store_status = asynctest.CoroutineMock()
-        self.helm_conn.get_instance_info = asynctest.CoroutineMock(return_value=instance_info)
+        self.helm_conn.get_instance_info = asynctest.CoroutineMock(
+            return_value=instance_info
+        )
 
-        await self.helm_conn.upgrade(self.cluster_uuid,
-                                     kdu_instance,
-                                     kdu_model,
-                                     atomic=True,
-                                     db_dict=db_dict)
+        await self.helm_conn.upgrade(
+            self.cluster_uuid, kdu_instance, kdu_model, atomic=True, db_dict=db_dict
+        )
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn._store_status.assert_called_with(cluster_id=self.cluster_id,
-                                                        kdu_instance=kdu_instance,
-                                                        namespace=self.namespace,
-                                                        db_dict=db_dict,
-                                                        operation="upgrade",
-                                                        run_once=True,
-                                                        check_every=0)
-        command = "/usr/bin/helm3 upgrade stable-openldap-0005399828 stable/openldap " \
-                  "--namespace testk8s --atomic --output yaml  --timeout 300s  " \
-                  "--version 1.2.3"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=False)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.helm_conn._store_status.assert_called_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="upgrade",
+            run_once=True,
+            check_every=0,
+        )
+        command = (
+            "/usr/bin/helm3 upgrade stable-openldap-0005399828 stable/openldap "
+            "--namespace testk8s --atomic --output yaml  --timeout 300s  "
+            "--version 1.2.3"
+        )
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_rollback(self):
@@ -211,29 +257,34 @@ class TestK8sHelm3Conn(asynctest.TestCase):
             "name": kdu_instance,
             "namespace": self.namespace,
             "revision": 2,
-            "status": "DEPLOYED"
+            "status": "DEPLOYED",
         }
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
         self.helm_conn._store_status = asynctest.CoroutineMock()
-        self.helm_conn.get_instance_info = asynctest.CoroutineMock(return_value=instance_info)
+        self.helm_conn.get_instance_info = asynctest.CoroutineMock(
+            return_value=instance_info
+        )
 
-        await self.helm_conn.rollback(self.cluster_uuid,
-                                      kdu_instance=kdu_instance,
-                                      revision=1,
-                                      db_dict=db_dict)
+        await self.helm_conn.rollback(
+            self.cluster_uuid, kdu_instance=kdu_instance, revision=1, db_dict=db_dict
+        )
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn._store_status.assert_called_with(cluster_id=self.cluster_id,
-                                                        kdu_instance=kdu_instance,
-                                                        namespace=self.namespace,
-                                                        db_dict=db_dict,
-                                                        operation="rollback",
-                                                        run_once=True,
-                                                        check_every=0)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.helm_conn._store_status.assert_called_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="rollback",
+            run_once=True,
+            check_every=0,
+        )
         command = "/usr/bin/helm3 rollback stable-openldap-0005399828 1 --namespace=testk8s --wait"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=False)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_uninstall(self):
@@ -243,58 +294,75 @@ class TestK8sHelm3Conn(asynctest.TestCase):
             "name": kdu_instance,
             "namespace": self.namespace,
             "revision": 3,
-            "status": "DEPLOYED"
+            "status": "DEPLOYED",
         }
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
         self.helm_conn._store_status = asynctest.CoroutineMock()
-        self.helm_conn.get_instance_info = asynctest.CoroutineMock(return_value=instance_info)
+        self.helm_conn.get_instance_info = asynctest.CoroutineMock(
+            return_value=instance_info
+        )
 
         await self.helm_conn.uninstall(self.cluster_uuid, kdu_instance)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm3 uninstall {} --namespace={}".format(
-            kdu_instance, self.namespace)
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True)
+            kdu_instance, self.namespace
+        )
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_get_services(self):
         kdu_instance = "test_services_1"
-        service = {
-            "name": "testservice",
-            "type": "LoadBalancer"
-        }
-        self.helm_conn._local_async_exec_pipe = asynctest.CoroutineMock(return_value=("", 0))
+        service = {"name": "testservice", "type": "LoadBalancer"}
+        self.helm_conn._local_async_exec_pipe = asynctest.CoroutineMock(
+            return_value=("", 0)
+        )
         self.helm_conn._parse_services = Mock(return_value=["testservice"])
         self.helm_conn._get_service = asynctest.CoroutineMock(return_value=service)
 
-        services = await self.helm_conn.get_services(self.cluster_uuid, kdu_instance,
-                                                     self.namespace)
+        services = await self.helm_conn.get_services(
+            self.cluster_uuid, kdu_instance, self.namespace
+        )
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         self.helm_conn._parse_services.assert_called_once()
-        command1 = "/usr/bin/helm3 get manifest {} --namespace=testk8s".format(kdu_instance)
+        command1 = "/usr/bin/helm3 get manifest {} --namespace=testk8s".format(
+            kdu_instance
+        )
         command2 = "/usr/bin/kubectl get --namespace={} -f -".format(self.namespace)
-        self.helm_conn._local_async_exec_pipe.assert_called_once_with(command1, command2,
-                                                                      env=self.env,
-                                                                      raise_exception_on_error=True)
-        self.assertEqual(services, [service], "Invalid service returned from get_service")
+        self.helm_conn._local_async_exec_pipe.assert_called_once_with(
+            command1, command2, env=self.env, raise_exception_on_error=True
+        )
+        self.assertEqual(
+            services, [service], "Invalid service returned from get_service"
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_get_service(self):
         service_name = "service1"
 
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
-        await self.helm_conn.get_service(self.cluster_uuid, service_name, self.namespace)
+        await self.helm_conn.get_service(
+            self.cluster_uuid, service_name, self.namespace
+        )
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        command = "/usr/bin/kubectl --kubeconfig=./tmp/helm3_cluster_id/.kube/config " \
-                  "--namespace=testk8s get service service1 -o=yaml"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        command = (
+            "/usr/bin/kubectl --kubeconfig=./tmp/helm3_cluster_id/.kube/config "
+            "--namespace=testk8s get service service1 -o=yaml"
+        )
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_inspect_kdu(self):
@@ -304,10 +372,14 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         repo_url = "https://kubernetes-charts.storage.googleapis.com/"
         await self.helm_conn.inspect_kdu(kdu_model, repo_url)
 
-        command = "/usr/bin/helm3 show all openldap --repo " \
-                  "https://kubernetes-charts.storage.googleapis.com/ " \
-                  "--version 1.2.4"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, encode_utf8=True)
+        command = (
+            "/usr/bin/helm3 show all openldap --repo "
+            "https://kubernetes-charts.storage.googleapis.com/ "
+            "--version 1.2.4"
+        )
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, encode_utf8=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_help_kdu(self):
@@ -317,10 +389,14 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         repo_url = "https://kubernetes-charts.storage.googleapis.com/"
         await self.helm_conn.help_kdu(kdu_model, repo_url)
 
-        command = "/usr/bin/helm3 show readme openldap --repo " \
-                  "https://kubernetes-charts.storage.googleapis.com/ " \
-                  "--version 1.2.4"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, encode_utf8=True)
+        command = (
+            "/usr/bin/helm3 show readme openldap --repo "
+            "https://kubernetes-charts.storage.googleapis.com/ "
+            "--version 1.2.4"
+        )
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, encode_utf8=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_values_kdu(self):
@@ -330,10 +406,14 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         repo_url = "https://kubernetes-charts.storage.googleapis.com/"
         await self.helm_conn.values_kdu(kdu_model, repo_url)
 
-        command = "/usr/bin/helm3 show values openldap --repo " \
-                  "https://kubernetes-charts.storage.googleapis.com/ " \
-                  "--version 1.2.4"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, encode_utf8=True)
+        command = (
+            "/usr/bin/helm3 show values openldap --repo "
+            "https://kubernetes-charts.storage.googleapis.com/ "
+            "--version 1.2.4"
+        )
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, encode_utf8=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_instances_list(self):
@@ -341,26 +421,31 @@ class TestK8sHelm3Conn(asynctest.TestCase):
 
         await self.helm_conn.instances_list(self.cluster_uuid)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm3 list --all-namespaces  --output yaml"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_status_kdu(self):
         kdu_instance = "stable-openldap-0005399828"
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
 
-        await self.helm_conn._status_kdu(self.cluster_id, kdu_instance,
-                                         self.namespace, return_text=True)
+        await self.helm_conn._status_kdu(
+            self.cluster_id, kdu_instance, self.namespace, return_text=True
+        )
         command = "/usr/bin/helm3 status {} --namespace={} --output yaml".format(
             kdu_instance, self.namespace
         )
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True,
-                                                                 show_error_log=False)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command,
+            env=self.env,
+            raise_exception_on_error=True,
+            show_error_log=False,
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_store_status(self):
@@ -371,28 +456,36 @@ class TestK8sHelm3Conn(asynctest.TestCase):
                 "description": "Install complete",
                 "status": {
                     "code": "1",
-                    "notes": "The openldap helm chart has been installed"
-                }
+                    "notes": "The openldap helm chart has been installed",
+                },
             }
         }
         self.helm_conn._status_kdu = asynctest.CoroutineMock(return_value=status)
-        self.helm_conn.write_app_status_to_db = asynctest.CoroutineMock(return_value=status)
-
-        await self.helm_conn._store_status(cluster_id=self.cluster_id,
-                                           kdu_instance=kdu_instance,
-                                           namespace=self.namespace,
-                                           db_dict=db_dict,
-                                           operation="install",
-                                           run_once=True,
-                                           check_every=0)
-        self.helm_conn._status_kdu.assert_called_once_with(cluster_id=self.cluster_id,
-                                                           kdu_instance=kdu_instance,
-                                                           namespace=self.namespace,
-                                                           return_text=False)
-        self.helm_conn.write_app_status_to_db.assert_called_once_with(db_dict=db_dict,
-                                                                      status="Install complete",
-                                                                      detailed_status=str(status),
-                                                                      operation="install")
+        self.helm_conn.write_app_status_to_db = asynctest.CoroutineMock(
+            return_value=status
+        )
+
+        await self.helm_conn._store_status(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="install",
+            run_once=True,
+            check_every=0,
+        )
+        self.helm_conn._status_kdu.assert_called_once_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            return_text=False,
+        )
+        self.helm_conn.write_app_status_to_db.assert_called_once_with(
+            db_dict=db_dict,
+            status="Install complete",
+            detailed_status=str(status),
+            operation="install",
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_reset_uninstall_false(self):
@@ -400,22 +493,23 @@ class TestK8sHelm3Conn(asynctest.TestCase):
 
         await self.helm_conn.reset(self.cluster_uuid, force=False, uninstall_sw=False)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.file_delete.assert_called_once_with(self.cluster_id,
-                                                              ignore_non_exist=True)
+        self.helm_conn.fs.file_delete.assert_called_once_with(
+            self.cluster_id, ignore_non_exist=True
+        )
         self.helm_conn._uninstall_sw.assert_not_called()
 
     @asynctest.fail_on(active_handles=True)
     async def test_reset_uninstall(self):
-        kdu_instance = 'stable-openldap-0021099429'
+        kdu_instance = "stable-openldap-0021099429"
         instances = [
             {
-                'app_version': '2.4.48',
-                'chart': 'openldap-1.2.3',
-                'name': kdu_instance,
-                'namespace': self.namespace,
-                'revision': '1',
-                'status': 'deployed',
-                'updated': '2020-10-30 11:11:20.376744191 +0000 UTC'
+                "app_version": "2.4.48",
+                "chart": "openldap-1.2.3",
+                "name": kdu_instance,
+                "namespace": self.namespace,
+                "revision": "1",
+                "status": "deployed",
+                "updated": "2020-10-30 11:11:20.376744191 +0000 UTC",
             }
         ]
         self.helm_conn._uninstall_sw = asynctest.CoroutineMock()
@@ -424,19 +518,25 @@ class TestK8sHelm3Conn(asynctest.TestCase):
 
         await self.helm_conn.reset(self.cluster_uuid, force=True, uninstall_sw=True)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.file_delete.assert_called_once_with(self.cluster_id,
-                                                              ignore_non_exist=True)
-        self.helm_conn.instances_list.assert_called_once_with(cluster_uuid=self.cluster_uuid)
-        self.helm_conn.uninstall.assert_called_once_with(cluster_uuid=self.cluster_uuid,
-                                                         kdu_instance=kdu_instance)
-        self.helm_conn._uninstall_sw.assert_called_once_with(self.cluster_id, self.namespace)
+        self.helm_conn.fs.file_delete.assert_called_once_with(
+            self.cluster_id, ignore_non_exist=True
+        )
+        self.helm_conn.instances_list.assert_called_once_with(
+            cluster_uuid=self.cluster_uuid
+        )
+        self.helm_conn.uninstall.assert_called_once_with(
+            cluster_uuid=self.cluster_uuid, kdu_instance=kdu_instance
+        )
+        self.helm_conn._uninstall_sw.assert_called_once_with(
+            self.cluster_id, self.namespace
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_sync_repos_add(self):
         repo_list = [
             {
                 "name": "stable",
-                "url": "https://kubernetes-charts.storage.googleapis.com/"
+                "url": "https://kubernetes-charts.storage.googleapis.com/",
             }
         ]
         self.helm_conn.repo_list = asynctest.CoroutineMock(return_value=repo_list)
@@ -445,9 +545,7 @@ class TestK8sHelm3Conn(asynctest.TestCase):
             if args[0] == "k8sclusters":
                 return {
                     "_admin": {
-                        "helm_chart_repos": [
-                            "4b5550a9-990d-4d95-8a48-1f4614d6ac9c"
-                        ]
+                        "helm_chart_repos": ["4b5550a9-990d-4d95-8a48-1f4614d6ac9c"]
                     }
                 }
             elif args[0] == "k8srepos":
@@ -455,8 +553,9 @@ class TestK8sHelm3Conn(asynctest.TestCase):
                     "_id": "4b5550a9-990d-4d95-8a48-1f4614d6ac9c",
                     "type": "helm-chart",
                     "name": "bitnami",
-                    "url": "https://charts.bitnami.com/bitnami"
+                    "url": "https://charts.bitnami.com/bitnami",
                 }
+
         self.helm_conn.db.get_one = asynctest.Mock()
         self.helm_conn.db.get_one.side_effect = get_one_result
 
@@ -464,36 +563,33 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         self.helm_conn.repo_remove = asynctest.CoroutineMock()
 
         deleted_repo_list, added_repo_dict = await self.helm_conn.synchronize_repos(
-            self.cluster_uuid)
+            self.cluster_uuid
+        )
         self.helm_conn.repo_remove.assert_not_called()
-        self.helm_conn.repo_add.assert_called_once_with(self.cluster_uuid, "bitnami",
-                                                        "https://charts.bitnami.com/bitnami")
+        self.helm_conn.repo_add.assert_called_once_with(
+            self.cluster_uuid, "bitnami", "https://charts.bitnami.com/bitnami"
+        )
         self.assertEqual(deleted_repo_list, [], "Deleted repo list should be empty")
-        self.assertEqual(added_repo_dict,
-                         {"4b5550a9-990d-4d95-8a48-1f4614d6ac9c": "bitnami"},
-                         "Repos added should include only one bitnami")
+        self.assertEqual(
+            added_repo_dict,
+            {"4b5550a9-990d-4d95-8a48-1f4614d6ac9c": "bitnami"},
+            "Repos added should include only one bitnami",
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_sync_repos_delete(self):
         repo_list = [
             {
                 "name": "stable",
-                "url": "https://kubernetes-charts.storage.googleapis.com/"
+                "url": "https://kubernetes-charts.storage.googleapis.com/",
             },
-            {
-                "name": "bitnami",
-                "url": "https://charts.bitnami.com/bitnami"
-            }
+            {"name": "bitnami", "url": "https://charts.bitnami.com/bitnami"},
         ]
         self.helm_conn.repo_list = asynctest.CoroutineMock(return_value=repo_list)
 
         def get_one_result(*args, **kwargs):
             if args[0] == "k8sclusters":
-                return {
-                    "_admin": {
-                        "helm_chart_repos": []
-                    }
-                }
+                return {"_admin": {"helm_chart_repos": []}}
 
         self.helm_conn.db.get_one = asynctest.Mock()
         self.helm_conn.db.get_one.side_effect = get_one_result
@@ -502,8 +598,11 @@ class TestK8sHelm3Conn(asynctest.TestCase):
         self.helm_conn.repo_remove = asynctest.CoroutineMock()
 
         deleted_repo_list, added_repo_dict = await self.helm_conn.synchronize_repos(
-            self.cluster_uuid)
+            self.cluster_uuid
+        )
         self.helm_conn.repo_add.assert_not_called()
         self.helm_conn.repo_remove.assert_called_once_with(self.cluster_uuid, "bitnami")
-        self.assertEqual(deleted_repo_list, ["bitnami"], "Deleted repo list should be bitnami")
+        self.assertEqual(
+            deleted_repo_list, ["bitnami"], "Deleted repo list should be bitnami"
+        )
         self.assertEqual(added_repo_dict, {}, "No repos should be added")
diff --git a/n2vc/tests/unit/test_k8s_helm_conn.py b/n2vc/tests/unit/test_k8s_helm_conn.py
index 1eb5775..c57c8a4 100644
--- a/n2vc/tests/unit/test_k8s_helm_conn.py
+++ b/n2vc/tests/unit/test_k8s_helm_conn.py
@@ -41,16 +41,17 @@ class TestK8sHelmConn(asynctest.TestCase):
         self.cluster_uuid = "{}:{}".format(self.namespace, self.cluster_id)
         # pass fake kubectl and helm commands to make sure it does not call actual commands
         K8sHelmConnector._check_file_exists = asynctest.Mock(return_value=True)
-        K8sHelmConnector._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
+        K8sHelmConnector._local_async_exec = asynctest.CoroutineMock(
+            return_value=("", 0)
+        )
         cluster_dir = self.fs.path + self.cluster_id
         self.kube_config = self.fs.path + self.cluster_id + "/.kube/config"
         self.helm_home = self.fs.path + self.cluster_id + "/.helm"
         self.env = {
             "HELM_HOME": "{}/.helm".format(cluster_dir),
-            "KUBECONFIG": "{}/.kube/config".format(cluster_dir)
+            "KUBECONFIG": "{}/.kube/config".format(cluster_dir),
         }
-        self.helm_conn = K8sHelmConnector(self.fs, self.db,
-                                          log=self.logger)
+        self.helm_conn = K8sHelmConnector(self.fs, self.db, log=self.logger)
         self.logger.debug("Set up executed")
 
     @asynctest.fail_on(active_handles=True)
@@ -67,24 +68,42 @@ class TestK8sHelmConn(asynctest.TestCase):
         await self.helm_conn.repo_add(self.cluster_uuid, repo_name, repo_url)
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.assertEqual(self.helm_conn._local_async_exec.call_count, 2,
-                         "local_async_exec expected 2 calls, called {}".format(
-                             self.helm_conn._local_async_exec.call_count))
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.assertEqual(
+            self.helm_conn._local_async_exec.call_count,
+            2,
+            "local_async_exec expected 2 calls, called {}".format(
+                self.helm_conn._local_async_exec.call_count
+            ),
+        )
 
         repo_update_command = "/usr/bin/helm repo update"
         repo_add_command = "/usr/bin/helm repo add {} {}".format(repo_name, repo_url)
         calls = self.helm_conn._local_async_exec.call_args_list
         call0_kargs = calls[0][1]
-        self.assertEqual(call0_kargs.get("command"), repo_update_command,
-                         "Invalid repo update command: {}".format(call0_kargs.get("command")))
-        self.assertEqual(call0_kargs.get("env"), self.env,
-                         "Invalid env for update command: {}".format(call0_kargs.get("env")))
+        self.assertEqual(
+            call0_kargs.get("command"),
+            repo_update_command,
+            "Invalid repo update command: {}".format(call0_kargs.get("command")),
+        )
+        self.assertEqual(
+            call0_kargs.get("env"),
+            self.env,
+            "Invalid env for update command: {}".format(call0_kargs.get("env")),
+        )
         call1_kargs = calls[1][1]
-        self.assertEqual(call1_kargs.get("command"), repo_add_command,
-                         "Invalid repo add command: {}".format(call1_kargs.get("command")))
-        self.assertEqual(call1_kargs.get("env"), self.env,
-                         "Invalid env for add command: {}".format(call1_kargs.get("env")))
+        self.assertEqual(
+            call1_kargs.get("command"),
+            repo_add_command,
+            "Invalid repo add command: {}".format(call1_kargs.get("command")),
+        )
+        self.assertEqual(
+            call1_kargs.get("env"),
+            self.env,
+            "Invalid env for add command: {}".format(call1_kargs.get("env")),
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_repo_list(self):
@@ -93,10 +112,13 @@ class TestK8sHelmConn(asynctest.TestCase):
         await self.helm_conn.repo_list(self.cluster_uuid)
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm repo list --output yaml"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, env=self.env,
-                                                            raise_exception_on_error=False)
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_repo_remove(self):
@@ -105,10 +127,13 @@ class TestK8sHelmConn(asynctest.TestCase):
         await self.helm_conn.repo_remove(self.cluster_uuid, repo_name)
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm repo remove {}".format(repo_name)
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command, env=self.env,
-                                                                 raise_exception_on_error=True)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_install(self):
@@ -126,24 +151,30 @@ class TestK8sHelmConn(asynctest.TestCase):
             kdu_instance,
             atomic=True,
             namespace=self.namespace,
-            db_dict=db_dict
+            db_dict=db_dict,
         )
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn._store_status.assert_called_with(cluster_id=self.cluster_id,
-                                                        kdu_instance=kdu_instance,
-                                                        namespace=self.namespace,
-                                                        db_dict=db_dict,
-                                                        operation="install",
-                                                        run_once=True,
-                                                        check_every=0)
-        command = "/usr/bin/helm install --atomic --output yaml   --timeout 300 " \
-                  "--name=stable-openldap-0005399828 --namespace testk8s stable/openldap " \
-                  "--version 1.2.2"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=False)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.helm_conn._store_status.assert_called_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="install",
+            run_once=True,
+            check_every=0,
+        )
+        command = (
+            "/usr/bin/helm install --atomic --output yaml   --timeout 300 "
+            "--name=stable-openldap-0005399828 --namespace testk8s stable/openldap "
+            "--version 1.2.2"
+        )
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_upgrade(self):
@@ -155,31 +186,37 @@ class TestK8sHelmConn(asynctest.TestCase):
             "name": kdu_instance,
             "namespace": self.namespace,
             "revision": 1,
-            "status": "DEPLOYED"
+            "status": "DEPLOYED",
         }
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
         self.helm_conn._store_status = asynctest.CoroutineMock()
-        self.helm_conn.get_instance_info = asynctest.CoroutineMock(return_value=instance_info)
+        self.helm_conn.get_instance_info = asynctest.CoroutineMock(
+            return_value=instance_info
+        )
 
-        await self.helm_conn.upgrade(self.cluster_uuid,
-                                     kdu_instance,
-                                     kdu_model,
-                                     atomic=True,
-                                     db_dict=db_dict)
+        await self.helm_conn.upgrade(
+            self.cluster_uuid, kdu_instance, kdu_model, atomic=True, db_dict=db_dict
+        )
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn._store_status.assert_called_with(cluster_id=self.cluster_id,
-                                                        kdu_instance=kdu_instance,
-                                                        namespace=self.namespace,
-                                                        db_dict=db_dict,
-                                                        operation="upgrade",
-                                                        run_once=True,
-                                                        check_every=0)
-        command = "/usr/bin/helm upgrade --atomic --output yaml  --timeout 300 " \
-                  "stable-openldap-0005399828 stable/openldap --version 1.2.3"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=False)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.helm_conn._store_status.assert_called_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="upgrade",
+            run_once=True,
+            check_every=0,
+        )
+        command = (
+            "/usr/bin/helm upgrade --atomic --output yaml  --timeout 300 "
+            "stable-openldap-0005399828 stable/openldap --version 1.2.3"
+        )
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_rollback(self):
@@ -190,29 +227,34 @@ class TestK8sHelmConn(asynctest.TestCase):
             "name": kdu_instance,
             "namespace": self.namespace,
             "revision": 2,
-            "status": "DEPLOYED"
+            "status": "DEPLOYED",
         }
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
         self.helm_conn._store_status = asynctest.CoroutineMock()
-        self.helm_conn.get_instance_info = asynctest.CoroutineMock(return_value=instance_info)
+        self.helm_conn.get_instance_info = asynctest.CoroutineMock(
+            return_value=instance_info
+        )
 
-        await self.helm_conn.rollback(self.cluster_uuid,
-                                      kdu_instance=kdu_instance,
-                                      revision=1,
-                                      db_dict=db_dict)
+        await self.helm_conn.rollback(
+            self.cluster_uuid, kdu_instance=kdu_instance, revision=1, db_dict=db_dict
+        )
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn._store_status.assert_called_with(cluster_id=self.cluster_id,
-                                                        kdu_instance=kdu_instance,
-                                                        namespace=self.namespace,
-                                                        db_dict=db_dict,
-                                                        operation="rollback",
-                                                        run_once=True,
-                                                        check_every=0)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        self.helm_conn._store_status.assert_called_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="rollback",
+            run_once=True,
+            check_every=0,
+        )
         command = "/usr/bin/helm rollback stable-openldap-0005399828 1 --wait"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=False)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=False
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_uninstall(self):
@@ -222,57 +264,71 @@ class TestK8sHelmConn(asynctest.TestCase):
             "name": kdu_instance,
             "namespace": self.namespace,
             "revision": 3,
-            "status": "DEPLOYED"
+            "status": "DEPLOYED",
         }
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
         self.helm_conn._store_status = asynctest.CoroutineMock()
-        self.helm_conn.get_instance_info = asynctest.CoroutineMock(return_value=instance_info)
+        self.helm_conn.get_instance_info = asynctest.CoroutineMock(
+            return_value=instance_info
+        )
 
         await self.helm_conn.uninstall(self.cluster_uuid, kdu_instance)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm delete --purge  {}".format(kdu_instance)
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_get_services(self):
         kdu_instance = "test_services_1"
-        service = {
-            "name": "testservice",
-            "type": "LoadBalancer"
-        }
-        self.helm_conn._local_async_exec_pipe = asynctest.CoroutineMock(return_value=("", 0))
+        service = {"name": "testservice", "type": "LoadBalancer"}
+        self.helm_conn._local_async_exec_pipe = asynctest.CoroutineMock(
+            return_value=("", 0)
+        )
         self.helm_conn._parse_services = Mock(return_value=["testservice"])
         self.helm_conn._get_service = asynctest.CoroutineMock(return_value=service)
 
-        services = await self.helm_conn.get_services(self.cluster_uuid, kdu_instance,
-                                                     self.namespace)
+        services = await self.helm_conn.get_services(
+            self.cluster_uuid, kdu_instance, self.namespace
+        )
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         self.helm_conn._parse_services.assert_called_once()
         command1 = "/usr/bin/helm get manifest {} ".format(kdu_instance)
         command2 = "/usr/bin/kubectl get --namespace={} -f -".format(self.namespace)
-        self.helm_conn._local_async_exec_pipe.assert_called_once_with(command1, command2,
-                                                                      env=self.env,
-                                                                      raise_exception_on_error=True)
-        self.assertEqual(services, [service], "Invalid service returned from get_service")
+        self.helm_conn._local_async_exec_pipe.assert_called_once_with(
+            command1, command2, env=self.env, raise_exception_on_error=True
+        )
+        self.assertEqual(
+            services, [service], "Invalid service returned from get_service"
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_get_service(self):
         service_name = "service1"
 
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
-        await self.helm_conn.get_service(self.cluster_uuid, service_name, self.namespace)
+        await self.helm_conn.get_service(
+            self.cluster_uuid, service_name, self.namespace
+        )
 
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
-        command = "/usr/bin/kubectl --kubeconfig=./tmp/helm_cluster_id/.kube/config " \
-                  "--namespace=testk8s get service service1 -o=yaml"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
+        command = (
+            "/usr/bin/kubectl --kubeconfig=./tmp/helm_cluster_id/.kube/config "
+            "--namespace=testk8s get service service1 -o=yaml"
+        )
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_inspect_kdu(self):
@@ -282,10 +338,14 @@ class TestK8sHelmConn(asynctest.TestCase):
         repo_url = "https://kubernetes-charts.storage.googleapis.com/"
         await self.helm_conn.inspect_kdu(kdu_model, repo_url)
 
-        command = "/usr/bin/helm inspect  openldap --repo " \
-                  "https://kubernetes-charts.storage.googleapis.com/ " \
-                  "--version 1.2.4"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, encode_utf8=True)
+        command = (
+            "/usr/bin/helm inspect  openldap --repo "
+            "https://kubernetes-charts.storage.googleapis.com/ "
+            "--version 1.2.4"
+        )
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, encode_utf8=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_help_kdu(self):
@@ -295,10 +355,14 @@ class TestK8sHelmConn(asynctest.TestCase):
         repo_url = "https://kubernetes-charts.storage.googleapis.com/"
         await self.helm_conn.help_kdu(kdu_model, repo_url)
 
-        command = "/usr/bin/helm inspect readme openldap --repo " \
-                  "https://kubernetes-charts.storage.googleapis.com/ " \
-                  "--version 1.2.4"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, encode_utf8=True)
+        command = (
+            "/usr/bin/helm inspect readme openldap --repo "
+            "https://kubernetes-charts.storage.googleapis.com/ "
+            "--version 1.2.4"
+        )
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, encode_utf8=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_values_kdu(self):
@@ -308,10 +372,14 @@ class TestK8sHelmConn(asynctest.TestCase):
         repo_url = "https://kubernetes-charts.storage.googleapis.com/"
         await self.helm_conn.values_kdu(kdu_model, repo_url)
 
-        command = "/usr/bin/helm inspect values openldap --repo " \
-                  "https://kubernetes-charts.storage.googleapis.com/ " \
-                  "--version 1.2.4"
-        self.helm_conn._local_async_exec.assert_called_with(command=command, encode_utf8=True)
+        command = (
+            "/usr/bin/helm inspect values openldap --repo "
+            "https://kubernetes-charts.storage.googleapis.com/ "
+            "--version 1.2.4"
+        )
+        self.helm_conn._local_async_exec.assert_called_with(
+            command=command, encode_utf8=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_instances_list(self):
@@ -319,24 +387,29 @@ class TestK8sHelmConn(asynctest.TestCase):
 
         await self.helm_conn.instances_list(self.cluster_uuid)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.reverse_sync.assert_called_once_with(from_path=self.cluster_id)
+        self.helm_conn.fs.reverse_sync.assert_called_once_with(
+            from_path=self.cluster_id
+        )
         command = "/usr/bin/helm list --output yaml"
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command, env=self.env, raise_exception_on_error=True
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_status_kdu(self):
         kdu_instance = "stable-openldap-0005399828"
         self.helm_conn._local_async_exec = asynctest.CoroutineMock(return_value=("", 0))
 
-        await self.helm_conn._status_kdu(self.cluster_id, kdu_instance,
-                                         self.namespace, return_text=True)
+        await self.helm_conn._status_kdu(
+            self.cluster_id, kdu_instance, self.namespace, return_text=True
+        )
         command = "/usr/bin/helm status {} --output yaml".format(kdu_instance)
-        self.helm_conn._local_async_exec.assert_called_once_with(command=command,
-                                                                 env=self.env,
-                                                                 raise_exception_on_error=True,
-                                                                 show_error_log=False)
+        self.helm_conn._local_async_exec.assert_called_once_with(
+            command=command,
+            env=self.env,
+            raise_exception_on_error=True,
+            show_error_log=False,
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_store_status(self):
@@ -347,28 +420,36 @@ class TestK8sHelmConn(asynctest.TestCase):
                 "description": "Install complete",
                 "status": {
                     "code": "1",
-                    "notes": "The openldap helm chart has been installed"
-                }
+                    "notes": "The openldap helm chart has been installed",
+                },
             }
         }
         self.helm_conn._status_kdu = asynctest.CoroutineMock(return_value=status)
-        self.helm_conn.write_app_status_to_db = asynctest.CoroutineMock(return_value=status)
-
-        await self.helm_conn._store_status(cluster_id=self.cluster_id,
-                                           kdu_instance=kdu_instance,
-                                           namespace=self.namespace,
-                                           db_dict=db_dict,
-                                           operation="install",
-                                           run_once=True,
-                                           check_every=0)
-        self.helm_conn._status_kdu.assert_called_once_with(cluster_id=self.cluster_id,
-                                                           kdu_instance=kdu_instance,
-                                                           namespace=self.namespace,
-                                                           return_text=False)
-        self.helm_conn.write_app_status_to_db.assert_called_once_with(db_dict=db_dict,
-                                                                      status="Install complete",
-                                                                      detailed_status=str(status),
-                                                                      operation="install")
+        self.helm_conn.write_app_status_to_db = asynctest.CoroutineMock(
+            return_value=status
+        )
+
+        await self.helm_conn._store_status(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            db_dict=db_dict,
+            operation="install",
+            run_once=True,
+            check_every=0,
+        )
+        self.helm_conn._status_kdu.assert_called_once_with(
+            cluster_id=self.cluster_id,
+            kdu_instance=kdu_instance,
+            namespace=self.namespace,
+            return_text=False,
+        )
+        self.helm_conn.write_app_status_to_db.assert_called_once_with(
+            db_dict=db_dict,
+            status="Install complete",
+            detailed_status=str(status),
+            operation="install",
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_reset_uninstall_false(self):
@@ -376,22 +457,23 @@ class TestK8sHelmConn(asynctest.TestCase):
 
         await self.helm_conn.reset(self.cluster_uuid, force=False, uninstall_sw=False)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.file_delete.assert_called_once_with(self.cluster_id,
-                                                              ignore_non_exist=True)
+        self.helm_conn.fs.file_delete.assert_called_once_with(
+            self.cluster_id, ignore_non_exist=True
+        )
         self.helm_conn._uninstall_sw.assert_not_called()
 
     @asynctest.fail_on(active_handles=True)
     async def test_reset_uninstall(self):
-        kdu_instance = 'stable-openldap-0021099429'
+        kdu_instance = "stable-openldap-0021099429"
         instances = [
             {
-                'app_version': '2.4.48',
-                'chart': 'openldap-1.2.3',
-                'name': kdu_instance,
-                'namespace': self.namespace,
-                'revision': '1',
-                'status': 'deployed',
-                'updated': '2020-10-30 11:11:20.376744191 +0000 UTC'
+                "app_version": "2.4.48",
+                "chart": "openldap-1.2.3",
+                "name": kdu_instance,
+                "namespace": self.namespace,
+                "revision": "1",
+                "status": "deployed",
+                "updated": "2020-10-30 11:11:20.376744191 +0000 UTC",
             }
         ]
         self.helm_conn._uninstall_sw = asynctest.CoroutineMock()
@@ -400,12 +482,18 @@ class TestK8sHelmConn(asynctest.TestCase):
 
         await self.helm_conn.reset(self.cluster_uuid, force=True, uninstall_sw=True)
         self.helm_conn.fs.sync.assert_called_once_with(from_path=self.cluster_id)
-        self.helm_conn.fs.file_delete.assert_called_once_with(self.cluster_id,
-                                                              ignore_non_exist=True)
-        self.helm_conn.instances_list.assert_called_once_with(cluster_uuid=self.cluster_uuid)
-        self.helm_conn.uninstall.assert_called_once_with(cluster_uuid=self.cluster_uuid,
-                                                         kdu_instance=kdu_instance)
-        self.helm_conn._uninstall_sw.assert_called_once_with(self.cluster_id, self.namespace)
+        self.helm_conn.fs.file_delete.assert_called_once_with(
+            self.cluster_id, ignore_non_exist=True
+        )
+        self.helm_conn.instances_list.assert_called_once_with(
+            cluster_uuid=self.cluster_uuid
+        )
+        self.helm_conn.uninstall.assert_called_once_with(
+            cluster_uuid=self.cluster_uuid, kdu_instance=kdu_instance
+        )
+        self.helm_conn._uninstall_sw.assert_called_once_with(
+            self.cluster_id, self.namespace
+        )
 
     @asynctest.fail_on(active_handles=True)
     async def test_uninstall_sw_namespace(self):
@@ -413,27 +501,37 @@ class TestK8sHelmConn(asynctest.TestCase):
 
         await self.helm_conn._uninstall_sw(self.cluster_id, self.namespace)
         calls = self.helm_conn._local_async_exec.call_args_list
-        self.assertEqual(len(calls), 3, "To uninstall should have executed three commands")
+        self.assertEqual(
+            len(calls), 3, "To uninstall should have executed three commands"
+        )
         call0_kargs = calls[0][1]
-        command_0 = "/usr/bin/helm --kubeconfig={} --home={} reset".format(self.kube_config,
-                                                                           self.helm_home)
-        self.assertEqual(call0_kargs,
-                         {"command": command_0,
-                          "raise_exception_on_error": True,
-                          "env": self.env}, "Invalid args for first call to local_exec")
+        command_0 = "/usr/bin/helm --kubeconfig={} --home={} reset".format(
+            self.kube_config, self.helm_home
+        )
+        self.assertEqual(
+            call0_kargs,
+            {"command": command_0, "raise_exception_on_error": True, "env": self.env},
+            "Invalid args for first call to local_exec",
+        )
         call1_kargs = calls[1][1]
-        command_1 = "/usr/bin/kubectl --kubeconfig={} delete " \
-                    "clusterrolebinding.rbac.authorization.k8s.io/osm-tiller-cluster-rule".\
-            format(self.kube_config)
-        self.assertEqual(call1_kargs,
-                         {"command": command_1,
-                          "raise_exception_on_error": False,
-                          "env": self.env}, "Invalid args for second call to local_exec")
+        command_1 = (
+            "/usr/bin/kubectl --kubeconfig={} delete "
+            "clusterrolebinding.rbac.authorization.k8s.io/osm-tiller-cluster-rule".format(
+                self.kube_config
+            )
+        )
+        self.assertEqual(
+            call1_kargs,
+            {"command": command_1, "raise_exception_on_error": False, "env": self.env},
+            "Invalid args for second call to local_exec",
+        )
         call2_kargs = calls[2][1]
-        command_2 = "/usr/bin/kubectl --kubeconfig={} --namespace kube-system delete " \
-                    "serviceaccount/{}".\
-            format(self.kube_config, self.service_account)
-        self.assertEqual(call2_kargs,
-                         {"command": command_2,
-                          "raise_exception_on_error": False,
-                          "env": self.env}, "Invalid args for third call to local_exec")
+        command_2 = (
+            "/usr/bin/kubectl --kubeconfig={} --namespace kube-system delete "
+            "serviceaccount/{}".format(self.kube_config, self.service_account)
+        )
+        self.assertEqual(
+            call2_kargs,
+            {"command": command_2, "raise_exception_on_error": False, "env": self.env},
+            "Invalid args for third call to local_exec",
+        )
diff --git a/n2vc/tests/unit/test_k8s_juju_conn.py b/n2vc/tests/unit/test_k8s_juju_conn.py
index e5f150b..d7f55be 100644
--- a/n2vc/tests/unit/test_k8s_juju_conn.py
+++ b/n2vc/tests/unit/test_k8s_juju_conn.py
@@ -664,8 +664,9 @@ class UpdateVcaStatusTest(K8sJujuConnTestCase):
         self.k8s_juju_conn.libjuju.get_application_configs = AsyncMock()
 
     def test_success(self):
-        self.loop.run_until_complete(self.k8s_juju_conn.update_vca_status(
-            self.vcaStatus, self.kdu_instance))
+        self.loop.run_until_complete(
+            self.k8s_juju_conn.update_vca_status(self.vcaStatus, self.kdu_instance)
+        )
         self.k8s_juju_conn.libjuju.get_executed_actions.assert_called_once()
         self.k8s_juju_conn.libjuju.get_actions.assert_called_once()
         self.k8s_juju_conn.libjuju.get_application_configs.assert_called_once()
@@ -674,8 +675,9 @@ class UpdateVcaStatusTest(K8sJujuConnTestCase):
         self.k8s_juju_conn.libjuju.get_model.return_value = None
         self.k8s_juju_conn.libjuju.get_executed_actions.side_effect = Exception()
         with self.assertRaises(Exception):
-            self.loop.run_until_complete(self.k8s_juju_conn.update_vca_status(
-                self.vcaStatus, self.kdu_instance))
+            self.loop.run_until_complete(
+                self.k8s_juju_conn.update_vca_status(self.vcaStatus, self.kdu_instance)
+            )
             self.k8s_juju_conn.libjuju.get_executed_actions.assert_not_called()
             self.k8s_juju_conn.libjuju.get_actions.assert_not_called_once()
             self.k8s_juju_conn.libjuju.get_application_configs.assert_not_called_once()
@@ -689,15 +691,9 @@ class ScaleTest(K8sJujuConnTestCase):
         self._scale = 2
         self.k8s_juju_conn.libjuju.scale_application = AsyncMock()
 
-    def test_success(
-            self
-    ):
+    def test_success(self):
         self.loop.run_until_complete(
-            self.k8s_juju_conn.scale(
-                self.kdu_name,
-                self._scale,
-                self.application_name
-            )
+            self.k8s_juju_conn.scale(self.kdu_name, self._scale, self.application_name)
         )
         self.k8s_juju_conn.libjuju.scale_application.assert_called_once()
 
@@ -706,9 +702,7 @@ class ScaleTest(K8sJujuConnTestCase):
         with self.assertRaises(Exception):
             self.loop.run_until_complete(
                 self.k8s_juju_conn.scale(
-                    self.kdu_name,
-                    self._scale,
-                    self.application_name
+                    self.kdu_name, self._scale, self.application_name
                 )
             )
         self.k8s_juju_conn.libjuju.scale_application.assert_called_once()
diff --git a/n2vc/tests/unit/test_libjuju.py b/n2vc/tests/unit/test_libjuju.py
index 5b120b1..3447340 100644
--- a/n2vc/tests/unit/test_libjuju.py
+++ b/n2vc/tests/unit/test_libjuju.py
@@ -228,8 +228,14 @@ class GetExecutedActionsTest(LibjujuTestCase):
         executed_actions = self.loop.run_until_complete(
             self.libjuju.get_executed_actions("model")
         )
-        expected_result = [{'id': 'id', 'action': 'action_name',
-                           'status': 'status', 'output': 'completed'}]
+        expected_result = [
+            {
+                "id": "id",
+                "action": "action_name",
+                "status": "status",
+                "output": "completed",
+            }
+        ]
         self.assertListEqual(expected_result, executed_actions)
         self.assertIsInstance(executed_actions, list)
 
@@ -259,7 +265,8 @@ class GetApplicationConfigsTest(LibjujuTestCase):
         mock_get_model.return_value = None
         with self.assertRaises(JujuError):
             self.loop.run_until_complete(
-                self.libjuju.get_application_configs("model", "app"))
+                self.libjuju.get_application_configs("model", "app")
+            )
 
         mock_get_controller.assert_called_once()
         mock_disconnect_controller.assert_called_once()
@@ -275,8 +282,9 @@ class GetApplicationConfigsTest(LibjujuTestCase):
         mock_get_controller,
     ):
         mock_get_application.return_value = FakeApplication()
-        application_configs = self.loop.run_until_complete(self.libjuju
-                                                           .get_application_configs("model", "app"))
+        application_configs = self.loop.run_until_complete(
+            self.libjuju.get_application_configs("model", "app")
+        )
 
         self.assertEqual(application_configs, ["app_config"])
 
@@ -1102,12 +1110,12 @@ class DestroyApplicationTest(LibjujuTestCase):
         super(DestroyApplicationTest, self).setUp()
 
     def test_success(
-            self,
-            mock_get_controller,
-            mock_get_model,
-            mock_disconnect_controller,
-            mock_get_application,
-            mock_disconnect_model,
+        self,
+        mock_get_controller,
+        mock_get_model,
+        mock_disconnect_controller,
+        mock_get_application,
+        mock_disconnect_model,
     ):
         mock_get_application.return_value = FakeApplication()
         mock_get_model.return_value = None
@@ -1123,12 +1131,12 @@ class DestroyApplicationTest(LibjujuTestCase):
         mock_disconnect_model.assert_called_once()
 
     def test_no_application(
-            self,
-            mock_get_controller,
-            mock_get_model,
-            mock_disconnect_controller,
-            mock_get_application,
-            mock_disconnect_model,
+        self,
+        mock_get_controller,
+        mock_get_model,
+        mock_disconnect_controller,
+        mock_get_application,
+        mock_disconnect_model,
     ):
         mock_get_model.return_value = None
         mock_get_application.return_value = None
@@ -1143,12 +1151,12 @@ class DestroyApplicationTest(LibjujuTestCase):
         mock_get_application.assert_called()
 
     def test_exception(
-            self,
-            mock_get_controller,
-            mock_get_model,
-            mock_disconnect_controller,
-            mock_get_application,
-            mock_disconnect_model,
+        self,
+        mock_get_controller,
+        mock_get_model,
+        mock_disconnect_controller,
+        mock_get_application,
+        mock_disconnect_model,
     ):
         mock_get_application.return_value = FakeApplication
         mock_get_model.return_value = None
@@ -1912,13 +1920,7 @@ class ScaleApplicationTest(LibjujuTestCase):
     ):
         mock_get_model.return_value = juju.model.Model()
         mock_get_application.return_value = FakeApplication()
-        self.loop.run_until_complete(
-            self.libjuju.scale_application(
-                "model",
-                "app",
-                2
-            )
-        )
+        self.loop.run_until_complete(self.libjuju.scale_application("model", "app", 2))
         mock_wait_for_model.assert_called_once()
         mock_disconnect_controller.assert_called_once()
         mock_disconnect_model.assert_called_once()
@@ -1936,34 +1938,25 @@ class ScaleApplicationTest(LibjujuTestCase):
         mock_get_model.return_value = juju.model.Model()
         with self.assertRaises(JujuApplicationNotFound):
             self.loop.run_until_complete(
-                self.libjuju.scale_application(
-                    "model",
-                    "app",
-                    2
-                )
+                self.libjuju.scale_application("model", "app", 2)
             )
         mock_disconnect_controller.assert_called()
         mock_disconnect_model.assert_called()
 
     def test_exception(
-            self,
-            mock_wait_for,
-            mock_disconnect_controller,
-            mock_disconnect_model,
-            mock_get_application,
-            mock_get_model,
-            mock_get_controller,
+        self,
+        mock_wait_for,
+        mock_disconnect_controller,
+        mock_disconnect_model,
+        mock_get_application,
+        mock_get_model,
+        mock_get_controller,
     ):
         mock_get_model.return_value = None
         mock_get_application.return_value = FakeApplication()
         with self.assertRaises(Exception):
             self.loop.run_until_complete(
-                self.libjuju.scale_application(
-                    "model",
-                    "app",
-                    2,
-                    total_timeout=0
-                )
+                self.libjuju.scale_application("model", "app", 2, total_timeout=0)
             )
         mock_disconnect_controller.assert_called_once()
 
diff --git a/n2vc/utils.py b/n2vc/utils.py
index f0146a0..0dbd71e 100644
--- a/n2vc/utils.py
+++ b/n2vc/utils.py
@@ -33,7 +33,11 @@ def base64_to_cacert(b64string):
     try:
         cacert = base64.b64decode(b64string).decode("utf-8")
 
-        cacert = re.sub(r"\\n", r"\n", cacert,)
+        cacert = re.sub(
+            r"\\n",
+            r"\n",
+            cacert,
+        )
     except binascii.Error as e:
         raise N2VCInvalidCertificate(message="Invalid CA Certificate: {}".format(e))
 
diff --git a/setup.py b/setup.py
index ec1dccb..ab23ca8 100644
--- a/setup.py
+++ b/setup.py
@@ -38,5 +38,5 @@ setup(
     packages=find_packages(exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
     include_package_data=True,
     entry_points={"console_scripts": []},
-    setup_requires=['setuptools-version-command']
+    setup_requires=["setuptools-version-command"],
 )
diff --git a/tox.ini b/tox.ini
index 816de79..628b15e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -35,6 +35,7 @@ deps = black
 skip_install = true
 commands =
         - black --check --diff n2vc/
+        - black --check --diff setup.py
 
 
 #######################################################################################