[8.x] [index management] Index templates matching `a_fake_index_…

…pattern_that_wont_match_any_indices` preview fix (elastic#195174) (elastic#199983) # Backport This will backport the following commits from `main` to `8.x`: - [[index management] Index templates matching `a_fake_index_pattern_that_wont_match_any_indices` preview fix (elastic#195174)](elastic#195174)  ### Questions ? Please refer to the [Backport tool documentation](https://github.com/sqren/backport)  Co-authored-by: Matthew Kime <[email protected]>
nickpeihl · Nov 13, 2024 · 176b691 · 176b691
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diff --git a/x-pack/plugins/index_management/__jest__/client_integration/helpers/http_requests.ts b/x-pack/plugins/index_management/__jest__/client_integration/helpers/http_requests.ts
@@ -147,6 +147,12 @@ const registerHttpRequestMockHelpers = (
   const setSimulateTemplateResponse = (response?: HttpResponse, error?: ResponseError) =>
     mockResponse('POST', `${API_BASE_PATH}/index_templates/simulate`, response, error);
 
+  const setSimulateTemplateByNameResponse = (
+    name: string,
+    response?: HttpResponse,
+    error?: ResponseError
+  ) => mockResponse('POST', `${API_BASE_PATH}/index_templates/simulate/${name}`, response, error);
+
   const setLoadComponentTemplatesResponse = (response?: HttpResponse, error?: ResponseError) =>
     mockResponse('GET', `${API_BASE_PATH}/component_templates`, response, error);
 
@@ -229,6 +235,7 @@ const registerHttpRequestMockHelpers = (
     setLoadIndexStatsResponse,
     setUpdateIndexSettingsResponse,
     setSimulateTemplateResponse,
+    setSimulateTemplateByNameResponse,
     setLoadComponentTemplatesResponse,
     setLoadNodesPluginsResponse,
     setLoadTelemetryResponse,

diff --git a/x-pack/plugins/index_management/__jest__/client_integration/home/index_templates_tab.test.ts b/x-pack/plugins/index_management/__jest__/client_integration/home/index_templates_tab.test.ts
@@ -617,7 +617,9 @@ describe('Index Templates tab', () => {
           const { find, actions, exists } = testBed;
 
           httpRequestsMockHelpers.setLoadTemplateResponse(templates[0].name, template);
-          httpRequestsMockHelpers.setSimulateTemplateResponse({ simulateTemplate: 'response' });
+          httpRequestsMockHelpers.setSimulateTemplateByNameResponse(templates[0].name, {
+            simulateTemplate: 'response',
+          });
 
           await actions.clickTemplateAt(0);
 

diff --git a/...ent/public/application/components/index_templates/simulate_template/simulate_template.tsx b/...ent/public/application/components/index_templates/simulate_template/simulate_template.tsx
@@ -23,22 +23,25 @@ export interface Filters {
 }
 
 interface Props {
-  template: { [key: string]: any };
+  template?: { [key: string]: any };
   filters?: Filters;
+  templateName?: string;
 }
 
-export const SimulateTemplate = React.memo(({ template, filters }: Props) => {
+export const SimulateTemplate = React.memo(({ template, filters, templateName }: Props) => {
   const [templatePreview, setTemplatePreview] = useState('{}');
 
   const updatePreview = useCallback(async () => {
-    if (!template || Object.keys(template).length === 0) {
+    if (!templateName && (!template || Object.keys(template).length === 0)) {
       return;
     }
 
-    const indexTemplate = serializeTemplate(
-      stripEmptyFields(template, { types: ['string'] }) as TemplateDeserialized
-    );
-    const { data, error } = await simulateIndexTemplate(indexTemplate);
+    const indexTemplate = templateName
+      ? undefined
+      : serializeTemplate(
+          stripEmptyFields(template, { types: ['string'] }) as TemplateDeserialized
+        );
+    const { data, error } = await simulateIndexTemplate({ template: indexTemplate, templateName });
     let filteredTemplate = data;
 
     if (data) {
@@ -67,7 +70,7 @@ export const SimulateTemplate = React.memo(({ template, filters }: Props) => {
     }
 
     setTemplatePreview(JSON.stringify(filteredTemplate ?? error, null, 2));
-  }, [template, filters]);
+  }, [template, filters, templateName]);
 
   useEffect(() => {
     updatePreview();

diff --git a/...ment/public/application/sections/home/template_list/template_details/tabs/tab_preview.tsx b/...ment/public/application/sections/home/template_list/template_details/tabs/tab_preview.tsx
@@ -8,14 +8,13 @@
 import React from 'react';
 import { FormattedMessage } from '@kbn/i18n-react';
 import { EuiText, EuiSpacer } from '@elastic/eui';
-import { TemplateDeserialized } from '../../../../../../../common';
 import { SimulateTemplate } from '../../../../../components/index_templates';
 
 interface Props {
-  templateDetails: TemplateDeserialized;
+  templateName: string;
 }
 
-export const TabPreview = ({ templateDetails }: Props) => {
+export const TabPreview = ({ templateName }: Props) => {
   return (
     <div data-test-subj="previewTabContent">
       <EuiText>
@@ -29,7 +28,7 @@ export const TabPreview = ({ templateDetails }: Props) => {
 
       <EuiSpacer size="m" />
 
-      <SimulateTemplate template={templateDetails} />
+      <SimulateTemplate templateName={templateName} />
     </div>
   );
 };
diff --git a/...lic/application/sections/home/template_list/template_details/template_details_content.tsx b/...lic/application/sections/home/template_list/template_details/template_details_content.tsx
@@ -171,7 +171,7 @@ export const TemplateDetailsContent = ({
         [SETTINGS_TAB_ID]: <TabSettings settings={settings} />,
         [MAPPINGS_TAB_ID]: <TabMappings mappings={mappings} />,
         [ALIASES_TAB_ID]: <TabAliases aliases={aliases} />,
-        [PREVIEW_TAB_ID]: <TabPreview templateDetails={templateDetails} />,
+        [PREVIEW_TAB_ID]: <TabPreview templateName={templateName} />,
       };
 
       const tabContent = tabToComponentMap[activeTab];

diff --git a/x-pack/plugins/index_management/public/application/services/api.ts b/x-pack/plugins/index_management/public/application/services/api.ts
@@ -319,11 +319,23 @@ export async function updateTemplate(template: TemplateDeserialized) {
   return result;
 }
 
-export function simulateIndexTemplate(template: { [key: string]: any }) {
+export function simulateIndexTemplate({
+  template,
+  templateName,
+}: {
+  template?: { [key: string]: any };
+  templateName?: string;
+}) {
+  const path = templateName
+    ? `${API_BASE_PATH}/index_templates/simulate/${templateName}`
+    : `${API_BASE_PATH}/index_templates/simulate`;
+
+  const body = templateName ? undefined : JSON.stringify(template);
+
   return sendRequest({
-    path: `${API_BASE_PATH}/index_templates/simulate`,
+    path,
     method: 'post',
-    body: JSON.stringify(template),
+    body,
   }).then((result) => {
     uiMetricService.trackMetric(METRIC_TYPE.COUNT, UIM_TEMPLATE_SIMULATE);
     return result;

diff --git a/x-pack/plugins/index_management/server/routes/api/templates/register_simulate_route.ts b/x-pack/plugins/index_management/server/routes/api/templates/register_simulate_route.ts
@@ -15,23 +15,38 @@ const bodySchema = schema.object({}, { unknowns: 'allow' });
 export function registerSimulateRoute({ router, lib: { handleEsError } }: RouteDependencies) {
   router.post(
     {
-      path: addBasePath('/index_templates/simulate'),
-      validate: { body: bodySchema },
+      path: addBasePath('/index_templates/simulate/{templateName?}'),
+      validate: {
+        body: schema.nullable(bodySchema),
+        params: schema.object({ templateName: schema.maybe(schema.string()) }),
+      },
     },
     async (context, request, response) => {
       const { client } = (await context.core).elasticsearch;
       const template = request.body as TypeOf<typeof bodySchema>;
+      // Until ES fixes a bug on their side we need to send a fake index pattern
+      // that won't match any indices.
+      // Issue: https://github.com/elastic/elasticsearch/issues/59152
+      // eslint-disable-next-line @typescript-eslint/naming-convention
+      const index_patterns = ['a_fake_index_pattern_that_wont_match_any_indices'];
+      const templateName = request.params.templateName;
+
+      const params: estypes.IndicesSimulateTemplateRequest = templateName
+        ? {
+            name: templateName,
+            body: {
+              index_patterns,
+            },
+          }
+        : {
+            body: {
+              ...template,
+              index_patterns,
+            },
+          };
 
       try {
-        const templatePreview = await client.asCurrentUser.indices.simulateTemplate({
-          body: {
-            ...template,
-            // Until ES fixes a bug on their side we need to send a fake index pattern
-            // that won't match any indices.
-            // Issue: https://github.com/elastic/elasticsearch/issues/59152
-            index_patterns: ['a_fake_index_pattern_that_wont_match_any_indices'],
-          },
-        } as estypes.IndicesSimulateTemplateRequest);
+        const templatePreview = await client.asCurrentUser.indices.simulateTemplate(params);
 
         return response.ok({ body: templatePreview });
       } catch (error) {

diff --git a/x-pack/test/api_integration/apis/management/index_management/lib/templates.api.ts b/x-pack/test/api_integration/apis/management/index_management/lib/templates.api.ts
@@ -53,6 +53,12 @@ export function templatesApi(getService: FtrProviderContext['getService']) {
       .set('kbn-xsrf', 'xxx')
       .send(payload);
 
+  const simulateTemplateByName = (name: string) =>
+    supertest
+      .post(`${API_BASE_PATH}/index_templates/simulate/${name}`)
+      .set('kbn-xsrf', 'xxx')
+      .send();
+
   return {
     getAllTemplates,
     getOneTemplate,
@@ -61,5 +67,6 @@ export function templatesApi(getService: FtrProviderContext['getService']) {
     deleteTemplates,
     cleanUpTemplates,
     simulateTemplate,
+    simulateTemplateByName,
   };
 }
diff --git a/x-pack/test/api_integration/apis/management/index_management/templates.ts b/x-pack/test/api_integration/apis/management/index_management/templates.ts
@@ -24,6 +24,7 @@ export default function ({ getService }: FtrProviderContext) {
     updateTemplate,
     cleanUpTemplates,
     simulateTemplate,
+    simulateTemplateByName,
   } = templatesApi(getService);
 
   describe('index templates', () => {
@@ -452,6 +453,18 @@ export default function ({ getService }: FtrProviderContext) {
         const { body } = await simulateTemplate(payload).expect(200);
         expect(body.template).to.be.ok();
       });
+
+      it('should simulate an index template by name', async () => {
+        const templateName = `template-${getRandomString()}`;
+        const payload = getTemplatePayload(templateName, [getRandomString()]);
+
+        await createTemplate(payload).expect(200);
+
+        await simulateTemplateByName(templateName).expect(200);
+
+        // cleanup
+        await deleteTemplates([{ name: templateName }]);
+      });
     });
   });
 }
diff --git a/x-pack/test/functional/apps/index_management/index_template_wizard.ts b/x-pack/test/functional/apps/index_management/index_template_wizard.ts
@@ -107,6 +107,76 @@ export default ({ getPageObjects, getService }: FtrProviderContext) => {
       });
     });
 
+    // https://github.com/elastic/kibana/pull/195174
+    it('can preview index template that matches a_fake_index_pattern_that_wont_match_any_indices', async () => {
+      // Click Create Template button
+      await testSubjects.click('createTemplateButton');
+      const pageTitleText = await testSubjects.getVisibleText('pageTitle');
+      expect(pageTitleText).to.be('Create template');
+
+      const stepTitle1 = await testSubjects.getVisibleText('stepTitle');
+      expect(stepTitle1).to.be('Logistics');
+
+      // Fill out required fields
+      await testSubjects.setValue('nameField', 'a-star');
+      await testSubjects.setValue('indexPatternsField', 'a*');
+      await testSubjects.setValue('priorityField', '1000');
+
+      // Click Next button
+      await pageObjects.indexManagement.clickNextButton();
+
+      // Verify empty prompt
+      const emptyPrompt = await testSubjects.exists('emptyPrompt');
+      expect(emptyPrompt).to.be(true);
+
+      // Click Next button
+      await pageObjects.indexManagement.clickNextButton();
+
+      // Verify step title
+      const stepTitle2 = await testSubjects.getVisibleText('stepTitle');
+      expect(stepTitle2).to.be('Index settings (optional)');
+
+      // Click Next button
+      await pageObjects.indexManagement.clickNextButton();
+
+      // Verify step title
+      const stepTitle3 = await testSubjects.getVisibleText('stepTitle');
+      expect(stepTitle3).to.be('Mappings (optional)');
+
+      // Click Next button
+      await pageObjects.indexManagement.clickNextButton();
+
+      // Verify step title
+      const stepTitle4 = await testSubjects.getVisibleText('stepTitle');
+      expect(stepTitle4).to.be('Aliases (optional)');
+
+      // Click Next button
+      await pageObjects.indexManagement.clickNextButton();
+
+      // Verify step title
+      const stepTitle = await testSubjects.getVisibleText('stepTitle');
+      expect(stepTitle).to.be("Review details for 'a-star'");
+
+      // Verify that summary exists
+      const summaryTabContent = await testSubjects.exists('summaryTabContent');
+      expect(summaryTabContent).to.be(true);
+
+      // Verify that index mode is set to "Standard"
+      expect(await testSubjects.exists('indexModeTitle')).to.be(true);
+      expect(await testSubjects.getVisibleText('indexModeValue')).to.be('Standard');
+
+      // Click Create template
+      await pageObjects.indexManagement.clickNextButton();
+
+      // Click preview tab, we know its the last one
+      const tabs = await testSubjects.findAll('tab');
+      await tabs[tabs.length - 1].click();
+      const templatePreview = await testSubjects.getVisibleText('simulateTemplatePreview');
+      expect(templatePreview).to.not.contain('error');
+
+      await testSubjects.click('closeDetailsButton');
+    });
+
     describe('Mappings step', () => {
       beforeEach(async () => {
         await pageObjects.common.navigateToApp('indexManagement');