Ignore clusters with invalid kubeconfig (#1956)

* Ignore clusters with invalid kubeconfig

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Improve error message

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Mark cluster as dead if kubeconfig loading fails

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Fix tests

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Validate cluster object in kubeconfig when constructing cluster

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Add unit tests for validateKubeConfig

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Refactor validateKubeconfig unit tests

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Extract ValidationOpts type

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Add default value to validationOpts param

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Change isDead to property

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Fix lint issues

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Add missing new line

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Update validateKubeConfig in-code documentation

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Remove isDead property

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

* Display warning notification if invalid kubeconfig detected (#2233)

* Display warning notification if invalid kubeconfig detected

Signed-off-by: Lauri Nevala <lauri.nevala@gmail.com>

src/renderer/ipc/index.tsx

@@ -5,6 +5,7 @@ import { Notifications, notificationsStore } from "../components/notifications";
 import { Button } from "../components/button";
 import { isMac } from "../../common/vars";
 import * as uuid from "uuid";
+import { invalidKubeconfigHandler } from "./invalid-kubeconfig-handler";
 
 function sendToBackchannel(backchannel: string, notificationId: string, data: BackchannelArg): void {
   notificationsStore.remove(notificationId);
@@ -58,4 +59,5 @@ export function registerIpcHandlers() {
     listener: UpdateAvailableHandler,
     verifier: areArgsUpdateAvailableFromMain,
   });
+  onCorrect(invalidKubeconfigHandler);
 }

src/renderer/ipc/invalid-kubeconfig-handler.tsx

@@ -0,0 +1,46 @@
+import React from "react";
+import { ipcRenderer, IpcRendererEvent, shell } from "electron";
+import { clusterStore } from "../../common/cluster-store";
+import { InvalidKubeConfigArgs, InvalidKubeconfigChannel } from "../../common/ipc/invalid-kubeconfig";
+import { Notifications, notificationsStore } from "../components/notifications";
+import { Button } from "../components/button";
+
+export const invalidKubeconfigHandler = {
+  source: ipcRenderer,
+  channel: InvalidKubeconfigChannel,
+  listener: InvalidKubeconfigListener,
+  verifier: (args: [unknown]): args is InvalidKubeConfigArgs  => {
+    return args.length === 1 && typeof args[0] === "string" && !!clusterStore.getById(args[0]);
+  },
+};
+
+function InvalidKubeconfigListener(event: IpcRendererEvent, ...[clusterId]: InvalidKubeConfigArgs): void {
+  const notificationId = `invalid-kubeconfig:${clusterId}`;
+  const cluster = clusterStore.getById(clusterId);
+  const contextName = cluster.name !== cluster.contextName ? `(context: ${cluster.contextName})` : "";
+
+  Notifications.error(
+    (
+      <div className="flex column gaps">
+        <b>Cluster with Invalid Kubeconfig Detected!</b>
+        <p>Cluster <b>{cluster.name}</b> has invalid kubeconfig {contextName} and cannot be displayed.
+        Please fix the <a href="#" onClick={(e) => { e.preventDefault(); shell.showItemInFolder(cluster.kubeConfigPath); }}>kubeconfig</a> manually and restart Lens
+        or remove the cluster.</p>
+        <p>Do you want to remove the cluster now?</p>
+        <div className="flex gaps row align-left box grow">
+          <Button active outlined label="Remove" onClick={()=> {
+            clusterStore.removeById(clusterId);
+            notificationsStore.remove(notificationId);
+          }} />
+          <Button active outlined label="Cancel" onClick={() => notificationsStore.remove(notificationId)} />
+        </div>
+      </div>
+    ),
+    {
+      id: notificationId,
+      timeout: 0
+    }
+  );
+}
+
+