Enable deleting apps by using CLI

helpers/kubernetes.py

@@ -13,6 +13,8 @@ from kubernetes.client.exceptions import ApiException
 from kubernetes.utils import create_from_yaml
 from kubernetes.utils.create_from_yaml import FailToCreateError
 
+# Load the kube config once
+config.load_kube_config()
 
 def create_variables_secret(app_slug, variables_filepath):
     """Checks if a variables secret for app_name already exists, generates it if necessary.
@@ -117,19 +119,31 @@ def store_kustomization(kustomization_template_filepath, app_slug):
             namespace="flux-system",
             plural="kustomizations",
             body=kustomization_dict)
-
-
-                # create_from_yaml(
-                # api_client_instance,
-                # yaml_objects=[kustomization_dict],
-                # # All kustomizations live in the flux-system namespace
-                # namespace="flux-system"
-                # )
     except FailToCreateError as ex:
         print(f"Could not create {app_slug} Kustomization because of exception {ex}")
         return
     print(f"Kustomization created with api response: {api_response}")
 
+def delete_kustomization(kustomization_name):
+    """Deletes kustomization for an app_slug. Should also result in the
+    deletion of the app's HelmReleases, PVCs, OAuth2Client, etc. Nothing will
+    remain"""
+    api_client_instance = api_client.ApiClient()
+    custom_objects_api = client.CustomObjectsApi(api_client_instance)
+    body = client.V1DeleteOptions()
+    try:
+        api_response = custom_objects_api.delete_namespaced_custom_object(
+            group="kustomize.toolkit.fluxcd.io",
+            version="v1beta2",
+            namespace="flux-system",
+            plural="kustomizations",
+            name=kustomization_name,
+            body=body)
+    except ApiException as ex:
+        print(f"Could not delete {kustomization_name} Kustomization because of exception {ex}")
+        return False
+    print(f"Kustomization deleted with api response: {api_response}")
+
 
 def read_template_to_dict(template_filepath, template_globals):
     """Reads a Jinja2 template that contains yaml and turns it into a dict
@@ -198,7 +212,6 @@ def get_all_kustomizations(namespace='flux-system'):
     :return: Kustomizations as returned by CustomObjectsApi.list_namespaced_custom_object()
     :rtype: object
     """
-    config.load_kube_config()
     api = client.CustomObjectsApi()
     api_response = api.list_namespaced_custom_object(
         group="kustomize.toolkit.fluxcd.io",
@@ -231,7 +244,6 @@ def get_all_helmreleases(namespace='stackspin'):
     :return: Helmreleases as returned by CustomObjectsApi.list_namespaced_custom_object()
     :rtype: object
     """
-    config.load_kube_config()
     api = client.CustomObjectsApi()
     api_response = api.list_namespaced_custom_object(
         group="helm.toolkit.fluxcd.io",
@@ -244,7 +256,6 @@ def get_all_helmreleases(namespace='stackspin'):
 
 def get_kustomization(name, namespace='flux-system'):
     """Returns all info of a Flux kustomization with name 'name'"""
-    config.load_kube_config()
     api = client.CustomObjectsApi()
     try:
         resource = api.get_namespaced_custom_object(
@@ -264,7 +275,6 @@ def get_kustomization(name, namespace='flux-system'):
 
 def get_helmrelease(name, namespace='stackspin-apps'):
     """Returns all info of a Flux helmrelease with name 'name'"""
-    config.load_kube_config()
     api = client.CustomObjectsApi()
     try:
         resource = api.get_namespaced_custom_object(