Add ability to configure lens release channel (#3971)

src/common/user-store/preferences-helpers.ts

@@ -260,6 +260,32 @@ const editorConfiguration: PreferenceDescription<EditorConfiguration, EditorConf
   },
 };
 
+const defaultUpdateChannel = "latest";
+const updateChannels = new Map([
+  [defaultUpdateChannel, {
+    label: "Stable"
+  }],
+  ["beta", {
+    label: "Beta"
+  }],
+  ["alpha", {
+    label: "Alpha"
+  }],
+]);
+
+const updateChannel: PreferenceDescription<string> = {
+  fromStore(val) {
+    return updateChannels.has(val) ? val : defaultUpdateChannel;
+  },
+  toStore(val) {
+    if (!updateChannels.has(val) || val === defaultUpdateChannel) {
+      return undefined;
+    }
+
+    return val;
+  }
+};
+
 type PreferencesModelType<field extends keyof typeof DESCRIPTORS> = typeof DESCRIPTORS[field] extends PreferenceDescription<infer T, any> ? T : never;
 type UserStoreModelType<field extends keyof typeof DESCRIPTORS> = typeof DESCRIPTORS[field] extends PreferenceDescription<any, infer T> ? T : never;
 
@@ -288,4 +314,10 @@ export const DESCRIPTORS = {
   syncKubeconfigEntries,
   editorConfiguration,
   terminalCopyOnSelect,
+  updateChannel,
+};
+
+export const CONSTANTS = {
+  defaultUpdateChannel,
+  updateChannels,
 };

src/common/user-store/user-store.ts

@@ -30,7 +30,7 @@ import { appEventBus } from "../event-bus";
 import path from "path";
 import { fileNameMigration } from "../../migrations/user-store";
 import { ObservableToggleSet, toJS } from "../../renderer/utils";
-import { DESCRIPTORS, KubeconfigSyncValue, UserPreferencesModel, EditorConfiguration } from "./preferences-helpers";
+import { DESCRIPTORS, KubeconfigSyncValue, UserPreferencesModel, EditorConfiguration, CONSTANTS } from "./preferences-helpers";
 import logger from "../../main/logger";
 import type { monaco } from "react-monaco-editor";
 import { getPath } from "../utils/getPath";
@@ -75,6 +75,7 @@ export class UserStore extends BaseStore<UserStoreModel> /* implements UserStore
   @observable downloadBinariesPath?: string;
   @observable kubectlBinariesPath?: string;
   @observable terminalCopyOnSelect: boolean;
+  @observable updateChannel?: string;
 
   /**
    * Download kubectl binaries matching cluster version
@@ -106,6 +107,10 @@ export class UserStore extends BaseStore<UserStoreModel> /* implements UserStore
     return this.shell || process.env.SHELL || process.env.PTYSHELL;
   }
 
+  @computed get isAllowedToDowngrade(): boolean {
+    return this.updateChannel !== CONSTANTS.defaultUpdateChannel;
+  }
+
   startMainReactions() {
     // track telemetry availability
     reaction(() => this.allowTelemetry, allowed => {
@@ -218,6 +223,7 @@ export class UserStore extends BaseStore<UserStoreModel> /* implements UserStore
     this.syncKubeconfigEntries.replace(DESCRIPTORS.syncKubeconfigEntries.fromStore(preferences?.syncKubeconfigEntries));
     this.editorConfiguration = DESCRIPTORS.editorConfiguration.fromStore(preferences?.editorConfiguration);
     this.terminalCopyOnSelect = DESCRIPTORS.terminalCopyOnSelect.fromStore(preferences?.terminalCopyOnSelect);
+    this.updateChannel = DESCRIPTORS.updateChannel.fromStore(preferences?.updateChannel);
   }
 
   toJSON(): UserStoreModel {
@@ -240,6 +246,7 @@ export class UserStore extends BaseStore<UserStoreModel> /* implements UserStore
         syncKubeconfigEntries: DESCRIPTORS.syncKubeconfigEntries.toStore(this.syncKubeconfigEntries),
         editorConfiguration: DESCRIPTORS.editorConfiguration.toStore(this.editorConfiguration),
         terminalCopyOnSelect: DESCRIPTORS.terminalCopyOnSelect.toStore(this.terminalCopyOnSelect),
+        updateChannel: DESCRIPTORS.updateChannel.toStore(this.updateChannel),
       },
     };