[UnifiedFieldList] Allow wildcards in field search

src/plugins/unified_field_list/public/components/field_item_button/field_item_button.test.tsx

@@ -147,4 +147,18 @@ describe('UnifiedFieldList <FieldItemButton />', () => {
     );
     expect(component).toMatchSnapshot();
   });
+
+  test('renders properly for wildcard search', () => {
+    const component = shallow(
+      <FieldItemButton
+        field={scriptedField}
+        fieldSearchHighlight="sc*te"
+        isEmpty={false}
+        isSelected={false}
+        isActive={false}
+        onClick={undefined}
+      />
+    );
+    expect(component).toMatchSnapshot();
+  });
 });

src/plugins/unified_field_list/public/components/field_item_button/field_item_button.tsx

@@ -14,6 +14,7 @@ import { EuiButtonIcon, EuiButtonIconProps, EuiHighlight, EuiIcon, EuiToolTip }
 import type { DataViewField } from '@kbn/data-views-plugin/common';
 import { type FieldListItem, type GetCustomFieldType } from '../../types';
 import { FieldIcon, getFieldIconProps } from '../field_icon';
+import { fieldNameWildcardMatcher } from '../../utils/field_name_wildcard_matcher';
 import './field_item_button.scss';
 
 /**
@@ -194,7 +195,7 @@ export function FieldItemButton<T extends FieldListItem = DataViewField>({
       fieldIcon={<FieldIcon {...iconProps} />}
       fieldName={
         <EuiHighlight
-          search={fieldSearchHighlight || ''}
+          search={getSearchHighlight(displayName, fieldSearchHighlight)}
           title={title}
           data-test-subj={`field-${field.name}`}
         >
@@ -230,3 +231,15 @@ function FieldConflictInfoIcon() {
     </EuiToolTip>
   );
 }
+
+function getSearchHighlight(displayName: string, fieldSearchHighlight?: string): string {
+  const searchHighlight = fieldSearchHighlight || '';
+  if (
+    searchHighlight.includes('*') &&
+    fieldNameWildcardMatcher({ name: displayName }, searchHighlight)
+  ) {
+    return displayName;
+  }
+
+  return searchHighlight;
+}

src/plugins/unified_field_list/public/hooks/use_field_filters.test.tsx

@@ -68,6 +68,33 @@ describe('UnifiedFieldList useFieldFilters()', () => {
     expect(result.current.onFilterField!(dataView.getFieldByName('bytes')!)).toBe(false);
   });
 
+  it('should update correctly on search by name which has a wildcard', async () => {
+    const props: FieldFiltersParams<DataViewField> = {
+      allFields: dataView.fields,
+      services: mockedServices,
+    };
+    const { result } = renderHook(useFieldFilters, {
+      initialProps: props,
+    });
+
+    expect(result.current.fieldSearchHighlight).toBe('');
+    expect(result.current.onFilterField).toBeUndefined();
+
+    act(() => {
+      result.current.fieldListFiltersProps.onChangeNameFilter('message*me1');
+    });
+
+    expect(result.current.fieldSearchHighlight).toBe('message*me1');
+    expect(result.current.onFilterField).toBeDefined();
+    expect(result.current.onFilterField!({ displayName: 'test' } as DataViewField)).toBe(false);
+    expect(result.current.onFilterField!({ displayName: 'message' } as DataViewField)).toBe(false);
+    expect(result.current.onFilterField!({ displayName: 'message.name1' } as DataViewField)).toBe(
+      true
+    );
+    expect(result.current.onFilterField!({ name: 'messagename10' } as DataViewField)).toBe(false);
+    expect(result.current.onFilterField!({ name: 'message.test' } as DataViewField)).toBe(false);
+  });
+
   it('should update correctly on filter by type', async () => {
     const props: FieldFiltersParams<DataViewField> = {
       allFields: dataView.fields,

src/plugins/unified_field_list/public/hooks/use_field_filters.ts

@@ -13,6 +13,7 @@ import type { CoreStart } from '@kbn/core-lifecycle-browser';
 import { type FieldListFiltersProps } from '../components/field_list_filters';
 import { type FieldListItem, type FieldTypeKnown, GetCustomFieldType } from '../types';
 import { getFieldIconType } from '../utils/field_types';
+import { fieldNameWildcardMatcher } from '../utils/field_name_wildcard_matcher';
 
 const htmlId = htmlIdGenerator('fieldList');
 
@@ -74,11 +75,7 @@ export function useFieldFilters<T extends FieldListItem = DataViewField>({
       onFilterField:
         fieldSearchHighlight?.length || selectedFieldTypes.length > 0
           ? (field: T) => {
-              if (
-                fieldSearchHighlight?.length &&
-                !field.name?.toLowerCase().includes(fieldSearchHighlight) &&
-                !field.displayName?.toLowerCase().includes(fieldSearchHighlight)
-              ) {
+              if (fieldSearchHighlight && !fieldNameWildcardMatcher(field, fieldSearchHighlight)) {
                 return false;
               }
               if (selectedFieldTypes.length > 0) {

src/plugins/unified_field_list/public/utils/field_name_wildcard_matcher.test.tsx

@@ -0,0 +1,38 @@
+/*
+ * 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 { type DataViewField } from '@kbn/data-views-plugin/common';
+import { fieldNameWildcardMatcher } from './field_name_wildcard_matcher';
+
+describe('UnifiedFieldList fieldNameWildcardMatcher()', () => {
+  it('should work correctly', async () => {
+    expect(fieldNameWildcardMatcher({ displayName: 'test' } as DataViewField, 'no')).toBe(false);
+    expect(
+      fieldNameWildcardMatcher({ displayName: 'test', name: 'yes' } as DataViewField, 'yes')
+    ).toBe(true);
+
+    const search = 'test*ue';
+    expect(fieldNameWildcardMatcher({ displayName: 'test' } as DataViewField, search)).toBe(false);
+    expect(fieldNameWildcardMatcher({ displayName: 'test.value' } as DataViewField, search)).toBe(
+      true
+    );
+    expect(fieldNameWildcardMatcher({ name: 'test.this_value' } as DataViewField, search)).toBe(
+      true
+    );
+    expect(fieldNameWildcardMatcher({ name: 'message.test' } as DataViewField, search)).toBe(false);
+    expect(
+      fieldNameWildcardMatcher({ name: 'test.this_value.maybe' } as DataViewField, search)
+    ).toBe(false);
+    expect(
+      fieldNameWildcardMatcher({ name: 'test.this_value.maybe' } as DataViewField, `${search}*`)
+    ).toBe(true);
+    expect(
+      fieldNameWildcardMatcher({ name: 'test.this_value.maybe' } as DataViewField, '*value*')
+    ).toBe(true);
+  });
+});

src/plugins/unified_field_list/public/utils/field_name_wildcard_matcher.ts

@@ -0,0 +1,34 @@
+/*
+ * 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 { escapeRegExp, memoize } from 'lodash';
+
+const makeRegEx = memoize(function makeRegEx(glob: string) {
+  const globRegex = glob.split('*').map(escapeRegExp).join('.*');
+  return new RegExp(globRegex.includes('*') ? `^${globRegex}$` : globRegex, 'i');
+});
+
+/**
+ * Checks if field displayName or name matches the provided search string.
+ * The search string can have wildcard.
+ * @param field
+ * @param fieldSearchHighlight
+ */
+export const fieldNameWildcardMatcher = (
+  field: { name: string; displayName?: string },
+  fieldSearchHighlight: string
+): boolean => {
+  if (!fieldSearchHighlight) {
+    return false;
+  }
+
+  return (
+    (!!field.displayName && makeRegEx(fieldSearchHighlight).test(field.displayName)) ||
+    makeRegEx(fieldSearchHighlight).test(field.name)
+  );
+};