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/common/__tests__/cluster-store.test.ts

@@ -6,6 +6,29 @@ import { ClusterStore, getClusterIdFromHost } from "../cluster-store";
 import { workspaceStore } from "../workspace-store";
 
 const testDataIcon = fs.readFileSync("test-data/cluster-store-migration-icon.png");
+const kubeconfig = `
+apiVersion: v1
+clusters:
+- cluster:
+    server: https://localhost
+  name: test
+contexts:
+- context:
+    cluster: test
+    user: test
+  name: foo
+- context:
+    cluster: test
+    user: test
+  name: foo2
+current-context: test
+kind: Config
+preferences: {}
+users:
+- name: test
+  user:
+    token: kubeconfig-user-q4lm4:xxxyyyy
+`;
 
 jest.mock("electron", () => {
   return {
@@ -47,13 +70,13 @@ describe("empty config", () => {
       clusterStore.addCluster(
         new Cluster({
           id: "foo",
-          contextName: "minikube",
+          contextName: "foo",
           preferences: {
             terminalCWD: "/tmp",
             icon: "data:image/jpeg;base64, iVBORw0KGgoAAAANSUhEUgAAA1wAAAKoCAYAAABjkf5",
             clusterName: "minikube"
           },
-          kubeConfigPath: ClusterStore.embedCustomKubeConfig("foo", "fancy foo config"),
+          kubeConfigPath: ClusterStore.embedCustomKubeConfig("foo", kubeconfig),
           workspace: workspaceStore.currentWorkspaceId
         })
       );
@@ -91,20 +114,20 @@ describe("empty config", () => {
       clusterStore.addClusters(
         new Cluster({
           id: "prod",
-          contextName: "prod",
+          contextName: "foo",
           preferences: {
             clusterName: "prod"
           },
-          kubeConfigPath: ClusterStore.embedCustomKubeConfig("prod", "fancy config"),
+          kubeConfigPath: ClusterStore.embedCustomKubeConfig("prod", kubeconfig),
           workspace: "workstation"
         }),
         new Cluster({
           id: "dev",
-          contextName: "dev",
+          contextName: "foo2",
           preferences: {
             clusterName: "dev"
           },
-          kubeConfigPath: ClusterStore.embedCustomKubeConfig("dev", "fancy config"),
+          kubeConfigPath: ClusterStore.embedCustomKubeConfig("dev", kubeconfig),
           workspace: "workstation"
         })
       );
@@ -177,20 +200,20 @@ describe("config with existing clusters", () => {
           clusters: [
             {
               id: "cluster1",
-              kubeConfig: "foo",
+              kubeConfigPath: kubeconfig,
               contextName: "foo",
               preferences: { terminalCWD: "/foo" },
               workspace: "default"
             },
             {
               id: "cluster2",
-              kubeConfig: "foo2",
+              kubeConfigPath: kubeconfig,
               contextName: "foo2",
               preferences: { terminalCWD: "/foo2" }
             },
             {
               id: "cluster3",
-              kubeConfig: "foo",
+              kubeConfigPath: kubeconfig,
               contextName: "foo",
               preferences: { terminalCWD: "/foo" },
               workspace: "foo",
@@ -247,6 +270,78 @@ describe("config with existing clusters", () => {
   });
 });
 
+describe("config with invalid cluster kubeconfig", () => {
+  beforeEach(() => {
+    const invalidKubeconfig = `
+apiVersion: v1
+clusters:
+- cluster:
+    server: https://localhost
+  name: test2
+contexts:
+- context:
+    cluster: test
+    user: test
+  name: test
+current-context: test
+kind: Config
+preferences: {}
+users:
+- name: test
+  user:
+    token: kubeconfig-user-q4lm4:xxxyyyy
+`;
+
+    ClusterStore.resetInstance();
+    const mockOpts = {
+      "tmp": {
+        "lens-cluster-store.json": JSON.stringify({
+          __internal__: {
+            migrations: {
+              version: "99.99.99"
+            }
+          },
+          clusters: [
+            {
+              id: "cluster1",
+              kubeConfigPath: invalidKubeconfig,
+              contextName: "test",
+              preferences: { terminalCWD: "/foo" },
+              workspace: "foo",
+            },
+            {
+              id: "cluster2",
+              kubeConfigPath: kubeconfig,
+              contextName: "foo",
+              preferences: { terminalCWD: "/foo" },
+              workspace: "default"
+            },
+
+          ]
+        })
+      }
+    };
+
+    mockFs(mockOpts);
+    clusterStore = ClusterStore.getInstance<ClusterStore>();
+
+    return clusterStore.load();
+  });
+
+  afterEach(() => {
+    mockFs.restore();
+  });
+
+  it("does not enable clusters with invalid kubeconfig", () => {
+    const storedClusters = clusterStore.clustersList;
+
+    expect(storedClusters.length).toBe(2);
+    expect(storedClusters[0].enabled).toBeFalsy;
+    expect(storedClusters[1].id).toBe("cluster2");
+    expect(storedClusters[1].enabled).toBeTruthy;
+  });
+});
+
 describe("pre 2.0 config with an existing cluster", () => {
   beforeEach(() => {
     ClusterStore.resetInstance();

src/common/__tests__/kube-helpers.test.ts

@@ -0,0 +1,101 @@
+import { KubeConfig } from "@kubernetes/client-node";
+import { validateKubeConfig } from "../kube-helpers";
+
+const kubeconfig = `
+apiVersion: v1
+clusters:
+- cluster:
+    server: https://localhost
+  name: test
+contexts:
+- context:
+    cluster: test
+    user: test
+  name: valid
+- context:
+    cluster: test2
+    user: test
+  name: invalidCluster
+- context:
+    cluster: test
+    user: test2
+  name: invalidUser
+- context:
+    cluster: test
+    user: invalidExec
+  name: invalidExec
+current-context: test
+kind: Config
+preferences: {}
+users:
+- name: test
+  user:
+    exec:
+      command: echo
+- name: invalidExec
+  user:
+    exec:
+      command: foo
+`;
+
+const kc = new KubeConfig();
+
+describe("validateKubeconfig", () => {
+  beforeAll(() => {
+    kc.loadFromString(kubeconfig);
+  });
+  describe("with default validation options", () => {
+    describe("with valid kubeconfig", () => {
+      it("does not raise exceptions", () => {
+        expect(() => { validateKubeConfig(kc, "valid");}).not.toThrow();
+      });
+    });
+    describe("with invalid context object", () => {
+      it("it raises exception", () => {
+        expect(() => { validateKubeConfig(kc, "invalid");}).toThrow("No valid context object provided in kubeconfig for context 'invalid'");
+      });
+    });
+
+    describe("with invalid cluster object", () => {
+      it("it raises exception", () => {
+        expect(() => { validateKubeConfig(kc, "invalidCluster");}).toThrow("No valid cluster object provided in kubeconfig for context 'invalidCluster'");
+      });
+    });
+
+    describe("with invalid user object", () => {
+      it("it raises exception", () => {
+        expect(() => { validateKubeConfig(kc, "invalidUser");}).toThrow("No valid user object provided in kubeconfig for context 'invalidUser'");
+      });
+    });
+
+    describe("with invalid exec command", () => {
+      it("it raises exception", () => {
+        expect(() => { validateKubeConfig(kc, "invalidExec");}).toThrow("User Exec command \"foo\" not found on host. Please ensure binary is found in PATH or use absolute path to binary in Kubeconfig");
+      });
+    });
+  });
+
+  describe("with validateCluster as false", () => {
+    describe("with invalid cluster object", () => {
+      it("does not raise exception", () => {
+        expect(() => { validateKubeConfig(kc, "invalidCluster", { validateCluster: false });}).not.toThrow();
+      });
+    });
+  });
+
+  describe("with validateUser as false", () => {
+    describe("with invalid user object", () => {
+      it("does not raise excpetions", () => {
+        expect(() => { validateKubeConfig(kc, "invalidUser", { validateUser: false });}).not.toThrow();
+      });
+    });
+  });
+
+  describe("with validateExec as false", () => {
+    describe("with invalid exec object", () => {
+      it("does not raise excpetions", () => {
+        expect(() => { validateKubeConfig(kc, "invalidExec", { validateExec: false });}).not.toThrow();
+      });
+    });
+  });
+});