[Upgrade Assistant] Disable UA and add prompt

x-pack/plugins/upgrade_assistant/common/constants.ts

@@ -13,3 +13,10 @@ import SemVer from 'semver/classes/semver';
  */
 export const mockKibanaVersion = '8.0.0';
 export const mockKibanaSemverVersion = new SemVer(mockKibanaVersion);
+
+/*
+ * This will be set to true up until the last minor before the next major.
+ * In readonly mode, the user will not be able to perform any actions in the UI
+ * and will be presented with a message indicating as such.
+ */
+export const UA_READONLY_MODE = true;

x-pack/plugins/upgrade_assistant/public/application/app.tsx

@@ -7,37 +7,19 @@
 
 import React from 'react';
 import { I18nStart } from 'src/core/public';
-import { EuiPageHeader, EuiPageHeaderSection, EuiTitle } from '@elastic/eui';
-import { FormattedMessage } from '@kbn/i18n/react';
-import { UpgradeAssistantTabs } from './components/tabs';
-import { AppContextProvider, ContextValue, AppContext } from './app_context';
+import { AppContextProvider, ContextValue } from './app_context';
+import { PageContent } from './components/page_content';
 
 export interface AppDependencies extends ContextValue {
   i18n: I18nStart;
 }
 
 export const RootComponent = ({ i18n, ...contextValue }: AppDependencies) => {
-  const { nextMajor } = contextValue.kibanaVersionInfo;
   return (
     <i18n.Context>
       <AppContextProvider value={contextValue}>
         <div data-test-subj="upgradeAssistantRoot">
-          <EuiPageHeader>
-            <EuiPageHeaderSection>
-              <EuiTitle size="l">
-                <h1>
-                  <FormattedMessage
-                    id="xpack.upgradeAssistant.appTitle"
-                    defaultMessage="{version} Upgrade Assistant"
-                    values={{ version: `${nextMajor}.0` }}
-                  />
-                </h1>
-              </EuiTitle>
-            </EuiPageHeaderSection>
-          </EuiPageHeader>
-          <AppContext.Consumer>
-            {({ http }) => <UpgradeAssistantTabs http={http} />}
-          </AppContext.Consumer>
+          <PageContent />
         </div>
       </AppContextProvider>
     </i18n.Context>

x-pack/plugins/upgrade_assistant/public/application/app_context.tsx

@@ -19,6 +19,7 @@ export interface ContextValue {
   isCloudEnabled: boolean;
   docLinks: DocLinksStart;
   kibanaVersionInfo: KibanaVersionContext;
+  isReadOnlyMode: boolean;
 }
 
 export const AppContext = createContext<ContextValue>({} as any);

x-pack/plugins/upgrade_assistant/public/application/components/coming_soon_prompt.tsx

@@ -0,0 +1,65 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+import { EuiEmptyPrompt, EuiPageContent, EuiLink } from '@elastic/eui';
+import { FormattedMessage } from '@kbn/i18n/react';
+import { useAppContext } from '../app_context';
+
+export const ComingSoonPrompt: React.FunctionComponent = () => {
+  const { kibanaVersionInfo, docLinks } = useAppContext();
+  const { nextMajor, currentMajor } = kibanaVersionInfo;
+  const { ELASTIC_WEBSITE_URL } = docLinks;
+
+  return (
+    <EuiPageContent>
+      <EuiEmptyPrompt
+        iconType="wrench"
+        data-test-subj="comingSoonPrompt"
+        title={
+          <h2>
+            <FormattedMessage
+              id="xpack.upgradeAssistant.emptyPrompt.title"
+              defaultMessage="{uaVersion} Upgrade Assistant"
+              values={{ uaVersion: `${nextMajor}.0` }}
+            />
+          </h2>
+        }
+        body={
+          <>
+            <p>
+              <FormattedMessage
+                id="xpack.upgradeAssistant.emptyPrompt.upgradeAssistantDescription"
+                defaultMessage="The Upgrade Assistant identifies deprecated settings in your cluster and helps you
+                resolve issues before you upgrade. Check back here when it's time to upgrade to Elastic {nextMajor}."
+                values={{ nextMajor: `${nextMajor}.0` }}
+              />
+            </p>
+
+            {currentMajor === 7 && (
+              <p>
+                <EuiLink
+                  external
+                  target="_blank"
+                  href={`${ELASTIC_WEBSITE_URL}guide/en/elasticsearch/reference/master/migrating-8.0.html`}
+                >
+                  <FormattedMessage
+                    id="xpack.upgradeAssistant.emptyPrompt.learnMoreDescription"
+                    defaultMessage="Learn more about migrating to {nextMajor}."
+                    values={{
+                      nextMajor: `${nextMajor}.0`,
+                    }}
+                  />
+                </EuiLink>
+              </p>
+            )}
+          </>
+        }
+      />
+    </EuiPageContent>
+  );
+};

x-pack/plugins/upgrade_assistant/public/application/components/page_content.tsx

@@ -0,0 +1,44 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+import { EuiPageHeader, EuiPageHeaderSection, EuiTitle } from '@elastic/eui';
+import { FormattedMessage } from '@kbn/i18n/react';
+
+import { useAppContext } from '../app_context';
+import { ComingSoonPrompt } from './coming_soon_prompt';
+import { UpgradeAssistantTabs } from './tabs';
+
+export const PageContent: React.FunctionComponent = () => {
+  const { kibanaVersionInfo, isReadOnlyMode, http } = useAppContext();
+  const { nextMajor } = kibanaVersionInfo;
+
+  // Read-only mode will be enabled up until the last minor before the next major release
+  if (isReadOnlyMode) {
+    return <ComingSoonPrompt />;
+  }
+
+  return (
+    <>
+      <EuiPageHeader data-test-subj="upgradeAssistantPageContent">
+        <EuiPageHeaderSection>
+          <EuiTitle size="l">
+            <h1>
+              <FormattedMessage
+                id="xpack.upgradeAssistant.appTitle"
+                defaultMessage="{version} Upgrade Assistant"
+                values={{ version: `${nextMajor}.0` }}
+              />
+            </h1>
+          </EuiTitle>
+        </EuiPageHeaderSection>
+      </EuiPageHeader>
+
+      <UpgradeAssistantTabs http={http} />
+    </>
+  );
+};

x-pack/plugins/upgrade_assistant/public/application/mount_management_section.ts

@@ -7,6 +7,7 @@
 
 import { CoreSetup } from 'src/core/public';
 import { ManagementAppMountParams } from '../../../../../src/plugins/management/public';
+import { UA_READONLY_MODE } from '../../common/constants';
 import { renderApp } from './render_app';
 import { KibanaVersionContext } from './app_context';
 
@@ -24,5 +25,6 @@ export async function mountManagementSection(
     i18n,
     docLinks,
     kibanaVersionInfo,
+    isReadOnlyMode: UA_READONLY_MODE,
   });
 }

x-pack/plugins/upgrade_assistant/tests_client_integration/helpers/index.ts

@@ -0,0 +1,8 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+export { setup, OverviewTestBed } from './overview.helpers';

x-pack/plugins/upgrade_assistant/tests_client_integration/helpers/overview.helpers.ts

@@ -0,0 +1,25 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { registerTestBed, TestBed, TestBedConfig } from '@kbn/test/jest';
+import { PageContent } from '../../public/application/components/page_content';
+import { WithAppDependencies } from './setup_environment';
+
+const testBedConfig: TestBedConfig = {
+  doMountAsync: true,
+};
+
+export type OverviewTestBed = TestBed<OverviewTestSubjects>;
+
+export const setup = async (overrides?: any): Promise<OverviewTestBed> => {
+  const initTestBed = registerTestBed(WithAppDependencies(PageContent, overrides), testBedConfig);
+  const testBed = await initTestBed();
+
+  return testBed;
+};
+
+export type OverviewTestSubjects = 'comingSoonPrompt' | 'upgradeAssistantPageContent';

x-pack/plugins/upgrade_assistant/tests_client_integration/helpers/setup_environment.tsx

@@ -0,0 +1,37 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import React from 'react';
+import axios from 'axios';
+
+import { docLinksServiceMock } from '../../../../../src/core/public/mocks';
+import { HttpSetup } from '../../../../../src/core/public';
+
+import { mockKibanaSemverVersion, UA_READONLY_MODE } from '../../common/constants';
+import { AppContextProvider } from '../../public/application/app_context';
+
+const mockHttpClient = axios.create();
+
+const contextValue = {
+  http: (mockHttpClient as unknown) as HttpSetup,
+  isCloudEnabled: false,
+  docLinks: docLinksServiceMock.createStartContract(),
+  kibanaVersionInfo: {
+    currentMajor: mockKibanaSemverVersion.major,
+    prevMajor: mockKibanaSemverVersion.major - 1,
+    nextMajor: mockKibanaSemverVersion.major + 1,
+  },
+  isReadOnlyMode: UA_READONLY_MODE,
+};
+
+export const WithAppDependencies = (Comp: any, overrides: any = {}) => (props: any) => {
+  return (
+    <AppContextProvider value={{ ...contextValue, ...overrides }}>
+      <Comp {...props} />
+    </AppContextProvider>
+  );
+};

x-pack/plugins/upgrade_assistant/tests_client_integration/overview.test.ts

@@ -0,0 +1,46 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0; you may not use this file except in compliance with the Elastic License
+ * 2.0.
+ */
+
+import { act } from 'react-dom/test-utils';
+
+import { OverviewTestBed, setup } from './helpers';
+
+describe('<PageContent />', () => {
+  let testBed: OverviewTestBed;
+
+  beforeEach(async () => {
+    await act(async () => {
+      testBed = await setup();
+    });
+  });
+
+  describe('Coming soon prompt', () => {
+    // Default behavior up until the last minor before the next major release
+    test('renders the coming soon prompt by default', () => {
+      const { exists } = testBed;
+
+      expect(exists('comingSoonPrompt')).toBe(true);
+    });
+  });
+
+  describe('Tabs', () => {
+    beforeEach(async () => {
+      await act(async () => {
+        // Override the default context value to verify tab content renders as expected
+        // This will be the default behavior on the last minor before the next major release (e.g., v7.15)
+        testBed = await setup({ isReadOnlyMode: false });
+      });
+    });
+
+    test('renders the coming soon prompt by default', () => {
+      const { exists } = testBed;
+
+      expect(exists('comingSoonPrompt')).toBe(false);
+      expect(exists('upgradeAssistantPageContent')).toBe(true);
+    });
+  });
+});

x-pack/plugins/upgrade_assistant/tsconfig.json

@@ -11,6 +11,7 @@
     "common/**/*",
     "public/**/*",
     "server/**/*",
+    "tests_client_integration/**/*",
     // have to declare *.json explicitly due to https://github.com/microsoft/TypeScript/issues/25636
     "public/**/*.json",
     "server/**/*.json"

x-pack/test/accessibility/apps/upgrade_assistant.ts

@@ -18,27 +18,37 @@ export default function ({ getService, getPageObjects }: FtrProviderContext) {
       await PageObjects.upgradeAssistant.navigateToPage();
     });
 
-    it('Overview Tab', async () => {
-      await retry.waitFor('Upgrade Assistant overview tab to be visible', async () => {
-        return testSubjects.exists('upgradeAssistantOverviewTabDetail');
+    it('Overview page', async () => {
+      await retry.waitFor('Upgrade Assistant overview page to be visible', async () => {
+        return testSubjects.exists('comingSoonPrompt');
       });
       await a11y.testAppSnapshot();
     });
 
-    it('Cluster Tab', async () => {
-      await testSubjects.click('upgradeAssistantClusterTab');
-      await retry.waitFor('Upgrade Assistant Cluster tab to be visible', async () => {
-        return testSubjects.exists('upgradeAssistantClusterTabDetail');
+    // These tests will be skipped until the last minor of the next major release
+    describe.skip('tabs', () => {
+      it('Overview Tab', async () => {
+        await retry.waitFor('Upgrade Assistant overview tab to be visible', async () => {
+          return testSubjects.exists('upgradeAssistantOverviewTabDetail');
+        });
+        await a11y.testAppSnapshot();
       });
-      await a11y.testAppSnapshot();
-    });
 
-    it('Indices Tab', async () => {
-      await testSubjects.click('upgradeAssistantIndicesTab');
-      await retry.waitFor('Upgrade Assistant Cluster tab to be visible', async () => {
-        return testSubjects.exists('upgradeAssistantIndexTabDetail');
+      it('Cluster Tab', async () => {
+        await testSubjects.click('upgradeAssistantClusterTab');
+        await retry.waitFor('Upgrade Assistant Cluster tab to be visible', async () => {
+          return testSubjects.exists('upgradeAssistantClusterTabDetail');
+        });
+        await a11y.testAppSnapshot();
+      });
+
+      it('Indices Tab', async () => {
+        await testSubjects.click('upgradeAssistantIndicesTab');
+        await retry.waitFor('Upgrade Assistant Cluster tab to be visible', async () => {
+          return testSubjects.exists('upgradeAssistantIndexTabDetail');
+        });
+        await a11y.testAppSnapshot();
       });
-      await a11y.testAppSnapshot();
     });
   });
 }