[Step 1][TSVB] Enable dual mode, support index patterns and strings

src/plugins/vis_type_timeseries/server/lib/get_fields.ts

@@ -47,7 +47,6 @@ export async function getFields(
       ),
     },
     getUiSettingsService: () => requestContext.core.uiSettings.client,
-    getSavedObjectsClient: () => requestContext.core.savedObjects.client,
     getEsShardTimeout: async () => {
       return await framework.globalConfig$
         .pipe(

src/plugins/vis_type_timeseries/server/lib/get_vis_data.ts

@@ -52,7 +52,6 @@ export function getVisData(
     pre: {},
     payload: request.body,
     getUiSettingsService: () => requestContext.core.uiSettings.client,
-    getSavedObjectsClient: () => requestContext.core.savedObjects.client,
     getEsShardTimeout: async () => {
       return await framework.globalConfig$
         .pipe(

src/plugins/vis_type_timeseries/server/lib/search_strategies/lib/get_index_pattern.ts

@@ -0,0 +1,32 @@
+/*
+ * 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 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import { IndexPatternsService, IndexPattern } from '../../../../../data/server';
+
+interface IndexPatternObjectDependencies {
+  indexPatternsService: IndexPatternsService;
+}
+export async function getIndexPatternObject(
+  indexPatternString: string,
+  { indexPatternsService }: IndexPatternObjectDependencies
+) {
+  let indexPatternObject: IndexPattern | undefined | null;
+
+  if (!indexPatternString) {
+    indexPatternObject = await indexPatternsService.getDefault();
+  } else {
+    indexPatternObject = (await indexPatternsService.find(indexPatternString)).find(
+      (index) => index.title === indexPatternString
+    );
+  }
+
+  return {
+    indexPatternObject,
+    indexPatternString: indexPatternObject?.title || indexPatternString || '',
+  };
+}

src/plugins/vis_type_timeseries/server/lib/search_strategies/strategies/abstract_search_strategy.test.ts

@@ -36,6 +36,7 @@ describe('AbstractSearchStrategy', () => {
       getIndexPatternsService: jest.fn(() =>
         Promise.resolve({
           find: jest.fn(() => []),
+          getDefault: jest.fn(() => {}),
         })
       ),
     } as unknown) as ReqFacade<VisPayload>;

src/plugins/vis_type_timeseries/server/lib/search_strategies/strategies/abstract_search_strategy.ts

@@ -6,14 +6,15 @@
  * Side Public License, v 1.
  */
 
-import type { FakeRequest, IUiSettingsClient, SavedObjectsClientContract } from 'kibana/server';
+import type { FakeRequest, IUiSettingsClient } from 'kibana/server';
 
 import { indexPatterns, IndexPatternsFetcher } from '../../../../../data/server';
 
 import type { Framework } from '../../../plugin';
 import type { FieldSpec, IndexPatternsService } from '../../../../../data/common';
 import type { VisPayload, SanitizedFieldType } from '../../../../common/types';
 import type { VisTypeTimeseriesRequestHandlerContext } from '../../../types';
+import { getIndexPatternObject } from '../lib/get_index_pattern';
 
 /**
  * ReqFacade is a regular KibanaRequest object extended with additional service
@@ -29,7 +30,6 @@ export interface ReqFacade<T = unknown> extends FakeRequest {
     indexPatternsFetcher?: IndexPatternsFetcher;
   };
   getUiSettingsService: () => IUiSettingsClient;
-  getSavedObjectsClient: () => SavedObjectsClientContract;
   getEsShardTimeout: () => Promise<number>;
   getIndexPatternsService: () => Promise<IndexPatternsService>;
 }
@@ -89,16 +89,14 @@ export abstract class AbstractSearchStrategy {
       rollupIndex: string;
     }>
   ) {
-    const { indexPatternsFetcher } = req.pre;
-    const indexPatternsService = await req.getIndexPatternsService();
-    const kibanaIndexPattern = (await indexPatternsService.find(indexPattern)).find(
-      (index) => index.title === indexPattern
-    );
+    const { indexPatternObject } = await getIndexPatternObject(indexPattern, {
+      indexPatternsService: await req.getIndexPatternsService(),
+    });
 
     return toSanitizedFieldType(
-      kibanaIndexPattern
-        ? kibanaIndexPattern.getNonScriptedFields()
-        : await indexPatternsFetcher!.getFieldsForWildcard({
+      indexPatternObject
+        ? indexPatternObject.getNonScriptedFields()
+        : await req.pre.indexPatternsFetcher!.getFieldsForWildcard({
             pattern: indexPattern,
             fieldCapsOptions: { allow_no_indices: true },
             metaFields: [],

src/plugins/vis_type_timeseries/server/lib/vis_data/annotations/get_request_params.js

@@ -8,7 +8,7 @@
 
 import { buildAnnotationRequest } from './build_request_body';
 import { getEsShardTimeout } from '../helpers/get_es_shard_timeout';
-import { getIndexPatternObject } from '../helpers/get_index_pattern';
+import { getIndexPatternObject } from '../../search_strategies/lib/get_index_pattern';
 
 export async function getAnnotationRequestParams(
   req,
@@ -19,8 +19,13 @@ export async function getAnnotationRequestParams(
 ) {
   const uiSettings = req.getUiSettingsService();
   const esShardTimeout = await getEsShardTimeout(req);
-  const indexPattern = annotation.index_pattern;
-  const { indexPatternObject, indexPatternString } = await getIndexPatternObject(req, indexPattern);
+  const { indexPatternObject, indexPatternString } = await getIndexPatternObject(
+    annotation.index_pattern,
+    {
+      indexPatternsService: await req.getIndexPatternsService(),
+    }
+  );
+
   const request = await buildAnnotationRequest(
     req,
     panel,

src/plugins/vis_type_timeseries/server/lib/vis_data/get_table_data.js

@@ -11,7 +11,7 @@ import { handleErrorResponse } from './handle_error_response';
 import { get } from 'lodash';
 import { processBucket } from './table/process_bucket';
 import { getEsQueryConfig } from './helpers/get_es_query_uisettings';
-import { getIndexPatternObject } from './helpers/get_index_pattern';
+import { getIndexPatternObject } from '../search_strategies/lib/get_index_pattern';
 import { createFieldsFetcher } from './helpers/fields_fetcher';
 import { extractFieldLabel } from '../../../common/calculate_label';
 
@@ -23,7 +23,10 @@ export async function getTableData(req, panel) {
     capabilities,
   } = await req.framework.searchStrategyRegistry.getViableStrategy(req, panelIndexPattern);
   const esQueryConfig = await getEsQueryConfig(req);
-  const { indexPatternObject } = await getIndexPatternObject(req, panelIndexPattern);
+  const { indexPatternObject } = await getIndexPatternObject(panelIndexPattern, {
+    indexPatternsService: await req.getIndexPatternsService(),
+  });
+
   const extractFields = createFieldsFetcher(req, searchStrategy, capabilities);
 
   const calculatePivotLabel = async () => {

src/plugins/vis_type_timeseries/server/lib/vis_data/series/get_request_params.js

@@ -8,13 +8,16 @@
 
 import { buildRequestBody } from './build_request_body';
 import { getEsShardTimeout } from '../helpers/get_es_shard_timeout';
-import { getIndexPatternObject } from '../helpers/get_index_pattern';
+import { getIndexPatternObject } from '../../../lib/search_strategies/lib/get_index_pattern';
 
 export async function getSeriesRequestParams(req, panel, series, esQueryConfig, capabilities) {
   const uiSettings = req.getUiSettingsService();
   const indexPattern =
     (series.override_index_pattern && series.series_index_pattern) || panel.index_pattern;
-  const { indexPatternObject, indexPatternString } = await getIndexPatternObject(req, indexPattern);
+
+  const { indexPatternObject, indexPatternString } = await getIndexPatternObject(indexPattern, {
+    indexPatternsService: await req.getIndexPatternsService(),
+  });
 
   const request = await buildRequestBody(
     req,