[Discover] Remove discover:searchFieldsFromSource setting (elastic#20…

…2679) - Closes elastic#196501 ## Summary The PR removes `discover:searchFieldsFromSource` Advanced Setting and the associated code. This breaking change is planned for v9. The setting was marked as deprecated in v8.15 elastic#185871 ### Checklist - [x] [Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html) was added for features that require explanation or tutorials - [x] [Unit or functional tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html) were updated or added to match the most common scenarios - [x] The PR description includes the appropriate Release Notes section, and the correct `release_note:*` label is applied per the [guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)
SoniaSanzV · Dec 9, 2024 · 7cf9614 · 7cf9614
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diff --git a/docs/management/advanced-options.asciidoc b/docs/management/advanced-options.asciidoc
@@ -309,12 +309,6 @@ Limits the number of rows per page in the document table.
 [[discover-sample-size]]`discover:sampleSize`::
 Sets the maximum number of rows for the entire document table. This is the maximum number of documents fetched from {es}.
 
-[[discover-searchFieldsFromSource]]`discover:searchFieldsFromSource`::
-deprecated:[8.15.0]
-Load fields from the original JSON {ref}/mapping-source-field.html[`_source`].
-When disabled, *Discover* loads fields using the {es} search API's
-{ref}/search-fields.html#search-fields-param[`fields`] parameter.
-
 [[discover-searchonpageload]]`discover:searchOnPageLoad`::
 Controls whether a search is executed when *Discover* first loads. This setting
 does not have an effect when loading a saved search.

diff --git a/...s/embeddable_examples/public/react_embeddables/data_table/data_table_react_embeddable.tsx b/...s/embeddable_examples/public/react_embeddables/data_table/data_table_react_embeddable.tsx
@@ -112,7 +112,6 @@ export const getDataTableFactory = (
                       dataView={dataView}
                       sampleSizeState={100}
                       columns={fields ?? []}
-                      useNewFieldsApi={true}
                       services={allServices}
                       onSetColumns={() => {}}
                       ariaLabelledBy="dataTableReactEmbeddableAria"

diff --git a/packages/kbn-discover-utils/index.ts b/packages/kbn-discover-utils/index.ts
@@ -22,7 +22,6 @@ export {
   SAMPLE_ROWS_PER_PAGE_SETTING,
   SAMPLE_SIZE_SETTING,
   SEARCH_EMBEDDABLE_TYPE,
-  SEARCH_FIELDS_FROM_SOURCE,
   SEARCH_ON_PAGE_LOAD_SETTING,
   SHOW_FIELD_STATISTICS,
   SHOW_MULTIFIELDS,

diff --git a/packages/kbn-discover-utils/src/constants.ts b/packages/kbn-discover-utils/src/constants.ts
@@ -20,7 +20,6 @@ export const ROW_HEIGHT_OPTION = 'discover:rowHeightOption';
 export const SAMPLE_ROWS_PER_PAGE_SETTING = 'discover:sampleRowsPerPage';
 export const SAMPLE_SIZE_SETTING = 'discover:sampleSize';
 export const SEARCH_EMBEDDABLE_TYPE = 'search';
-export const SEARCH_FIELDS_FROM_SOURCE = 'discover:searchFieldsFromSource';
 export const SEARCH_ON_PAGE_LOAD_SETTING = 'discover:searchOnPageLoad';
 export const SHOW_FIELD_STATISTICS = 'discover:showFieldStatistics';
 export const SHOW_MULTIFIELDS = 'discover:showMultiFields';

diff --git a/packages/kbn-management/settings/setting_ids/index.ts b/packages/kbn-management/settings/setting_ids/index.ts
@@ -80,7 +80,6 @@ export const DISCOVER_MODIFY_COLUMNS_ON_SWITCH_ID = 'discover:modifyColumnsOnSwi
 export const DISCOVER_ROW_HEIGHT_OPTION_ID = 'discover:rowHeightOption';
 export const DISCOVER_SAMPLE_ROWS_PER_PAGE_ID = 'discover:sampleRowsPerPage';
 export const DISCOVER_SAMPLE_SIZE_ID = 'discover:sampleSize';
-export const DISCOVER_SEARCH_FIELDS_FROM_SOURCE_ID = 'discover:searchFieldsFromSource';
 export const DISCOVER_SEARCH_ON_PAGE_LOAD_ID = 'discover:searchOnPageLoad';
 export const DISCOVER_SHOW_FIELD_STATISTICS_ID = 'discover:showFieldStatistics';
 export const DISCOVER_SHOW_MULTI_FIELDS_ID = 'discover:showMultiFields';

diff --git a/packages/kbn-unified-data-table/README.md b/packages/kbn-unified-data-table/README.md
@@ -26,7 +26,6 @@ Props description:
 | **showFullScreenButton** | (optional)boolean | Determines whether the full screen button should be displayed. |
 | **isSortEnabled** | (optional)boolean | Manage user sorting control. |
 | **sort** | SortOrder[] | Current sort setting. |
-| **useNewFieldsApi** | boolean | How the data is fetched. |
 | **isPaginationEnabled** | (optional)boolean | Manage pagination control. |
 | **controlColumnIds** | (optional)string[] | List of used control columns (available: 'openDetails', 'select'). |
 | **rowHeightState** | (optional)number | Row height from state. |
@@ -145,7 +144,6 @@ Usage example:
       renderCustomGridBody={renderCustomGridBody}
       rowsPerPageOptions={[10, 30, 40, 100]}
       showFullScreenButton={false}
-      useNewFieldsApi={true}
       maxDocFieldsDisplayed={50}
       consumer="timeline"
       totalHits={
@@ -210,7 +208,6 @@ const {
     dataView,
     dataViews,
     setAppState: stateContainer.appState.update,
-    useNewFieldsApi,
     columns,
     sort,
   });

diff --git a/packages/kbn-unified-data-table/src/components/actions/columns.test.ts b/packages/kbn-unified-data-table/src/components/actions/columns.test.ts
@@ -25,7 +25,6 @@ function getStateColumnAction(
     } as unknown as Capabilities,
     dataView: dataViewMock,
     dataViews: dataViewsMock,
-    useNewFieldsApi: true,
     setAppState,
     columns: state.columns,
     sort: state.sort,

diff --git a/packages/kbn-unified-data-table/src/components/actions/columns.ts b/packages/kbn-unified-data-table/src/components/actions/columns.ts
@@ -18,7 +18,6 @@ export function getStateColumnActions({
   capabilities,
   dataView,
   dataViews,
-  useNewFieldsApi,
   setAppState,
   columns,
   sort,
@@ -28,7 +27,6 @@ export function getStateColumnActions({
   capabilities: Capabilities;
   dataView: DataView;
   dataViews: DataViewsContract;
-  useNewFieldsApi: boolean;
   setAppState: (state: {
     columns: string[];
     sort?: string[][];
@@ -41,15 +39,15 @@ export function getStateColumnActions({
 }) {
   function onAddColumn(columnName: string) {
     popularizeField(dataView, columnName, dataViews, capabilities);
-    const nextColumns = addColumn(columns || [], columnName, useNewFieldsApi);
+    const nextColumns = addColumn(columns || [], columnName);
     const nextSort = columnName === '_score' && !sort?.length ? [['_score', defaultOrder]] : sort;
     setAppState({ columns: nextColumns, sort: nextSort, settings });
   }
 
   function onRemoveColumn(columnName: string) {
     popularizeField(dataView, columnName, dataViews, capabilities);
 
-    const nextColumns = removeColumn(columns || [], columnName, useNewFieldsApi);
+    const nextColumns = removeColumn(columns || [], columnName);
     // The state's sort property is an array of [sortByColumn,sortDirection]
     const nextSort = sort && sort.length ? sort.filter((subArr) => subArr[0] !== columnName) : [];
 
@@ -98,32 +96,28 @@ export function getStateColumnActions({
  * Helper function to provide a fallback to a single _source column if the given array of columns
  * is empty, and removes _source if there are more than 1 columns given
  * @param columns
- * @param useNewFieldsApi should a new fields API be used
  */
-function buildColumns(columns: string[], useNewFieldsApi = false) {
+function buildColumns(columns: string[]) {
   if (columns.length > 1 && columns.indexOf('_source') !== -1) {
     return columns.filter((col) => col !== '_source');
   } else if (columns.length !== 0) {
     return columns;
   }
-  return useNewFieldsApi ? [] : ['_source'];
+  return [];
 }
 
-function addColumn(columns: string[], columnName: string, useNewFieldsApi?: boolean) {
+function addColumn(columns: string[], columnName: string) {
   if (columns.includes(columnName)) {
     return columns;
   }
-  return buildColumns([...columns, columnName], useNewFieldsApi);
+  return buildColumns([...columns, columnName]);
 }
 
-function removeColumn(columns: string[], columnName: string, useNewFieldsApi?: boolean) {
+function removeColumn(columns: string[], columnName: string) {
   if (!columns.includes(columnName)) {
     return columns;
   }
-  return buildColumns(
-    columns.filter((col) => col !== columnName),
-    useNewFieldsApi
-  );
+  return buildColumns(columns.filter((col) => col !== columnName));
 }
 
 function moveColumn(columns: string[], columnName: string, newIndex: number) {

diff --git a/packages/kbn-unified-data-table/src/components/data_table.test.tsx b/packages/kbn-unified-data-table/src/components/data_table.test.tsx
@@ -82,7 +82,6 @@ function getProps(): UnifiedDataTableProps {
     settings: {},
     showTimeCol: true,
     sort: [],
-    useNewFieldsApi: true,
     services: {
       fieldFormats: services.fieldFormats,
       uiSettings: services.uiSettings,
@@ -124,7 +123,6 @@ const renderDataTable = async (props: Partial<UnifiedDataTableProps>) => {
           setSettings(state.settings);
         }
       }, []),
-      useNewFieldsApi: true,
       columns,
       settings,
     });

diff --git a/packages/kbn-unified-data-table/src/components/data_table.tsx b/packages/kbn-unified-data-table/src/components/data_table.tsx
@@ -217,10 +217,6 @@ export interface UnifiedDataTableProps {
    * Current sort setting
    */
   sort: SortOrder[];
-  /**
-   * How the data is fetched
-   */
-  useNewFieldsApi: boolean;
   /**
    * Manage pagination control
    */
@@ -454,7 +450,6 @@ export const UnifiedDataTable = ({
   showTimeCol,
   showFullScreenButton = true,
   sort,
-  useNewFieldsApi,
   isSortEnabled = true,
   isPaginationEnabled = true,
   cellActionsTriggerId,
@@ -716,7 +711,6 @@ export const UnifiedDataTable = ({
       getRenderCellValueFn({
         dataView,
         rows: displayedRows,
-        useNewFieldsApi,
         shouldShowFieldHandler,
         closePopover: () => dataGridRef.current?.closeCellPopover(),
         fieldFormats,
@@ -728,7 +722,6 @@ export const UnifiedDataTable = ({
     [
       dataView,
       displayedRows,
-      useNewFieldsApi,
       shouldShowFieldHandler,
       maxDocFieldsDisplayed,
       fieldFormats,

diff --git a/packages/kbn-unified-data-table/src/hooks/use_data_grid_columns.test.tsx b/packages/kbn-unified-data-table/src/hooks/use_data_grid_columns.test.tsx
@@ -22,7 +22,6 @@ describe('useColumns', () => {
     dataViews: dataViewsMock,
     setAppState: () => {},
     columns: ['Time', 'message'],
-    useNewFieldsApi: false,
   };
 
   test('should return valid result', () => {
@@ -37,12 +36,11 @@ describe('useColumns', () => {
     expect(result.current.onSetColumns).toBeInstanceOf(Function);
   });
 
-  test('should skip _source column when useNewFieldsApi is set to true', () => {
+  test('should skip _source column', () => {
     const { result } = renderHook(() => {
       return useColumns({
         ...defaultProps,
         columns: ['Time', '_source'],
-        useNewFieldsApi: true,
       });
     });
 

diff --git a/packages/kbn-unified-data-table/src/hooks/use_data_grid_columns.ts b/packages/kbn-unified-data-table/src/hooks/use_data_grid_columns.ts
@@ -19,7 +19,6 @@ export interface UseColumnsProps {
   capabilities: Capabilities;
   dataView: DataView;
   dataViews: DataViewsContract;
-  useNewFieldsApi: boolean;
   setAppState: (state: {
     columns: string[];
     sort?: string[][];
@@ -36,44 +35,32 @@ export const useColumns = ({
   dataView,
   dataViews,
   setAppState,
-  useNewFieldsApi,
   columns,
   sort,
   defaultOrder = 'desc',
   settings,
 }: UseColumnsProps) => {
-  const [usedColumns, setUsedColumns] = useState(getColumns(columns, useNewFieldsApi));
+  const [usedColumns, setUsedColumns] = useState(getColumns(columns));
   useEffect(() => {
-    const nextColumns = getColumns(columns, useNewFieldsApi);
+    const nextColumns = getColumns(columns);
     if (isEqual(usedColumns, nextColumns)) {
       return;
     }
     setUsedColumns(nextColumns);
-  }, [columns, useNewFieldsApi, usedColumns]);
+  }, [columns, usedColumns]);
   const { onAddColumn, onRemoveColumn, onSetColumns, onMoveColumn } = useMemo(
     () =>
       getStateColumnActions({
         capabilities,
         dataView,
         dataViews,
         setAppState,
-        useNewFieldsApi,
         columns: usedColumns,
         sort,
         defaultOrder,
         settings,
       }),
-    [
-      capabilities,
-      dataView,
-      dataViews,
-      defaultOrder,
-      setAppState,
-      settings,
-      sort,
-      useNewFieldsApi,
-      usedColumns,
-    ]
+    [capabilities, dataView, dataViews, defaultOrder, setAppState, settings, sort, usedColumns]
   );
 
   return {
@@ -85,9 +72,9 @@ export const useColumns = ({
   };
 };
 
-function getColumns(columns: string[] | undefined, useNewFieldsApi: boolean) {
+function getColumns(columns: string[] | undefined) {
   if (!columns) {
     return [];
   }
-  return useNewFieldsApi ? columns.filter((col) => col !== '_source') : columns;
+  return columns.filter((col) => col !== '_source');
 }