[Fleet] Fix reserved keys for Elasticsearch output YAML box (elastic#…

…175901)

## Summary

Fixes elastic#175892

Updates reserved keywords that trigger the `Custom` preset for the
Elasticsearch output.



https://github.com/elastic/kibana/assets/6766512/dda60f6c-d77e-4e98-946b-2c389660074b

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

x-pack/plugins/fleet/common/constants/output.ts

@@ -122,12 +122,12 @@ export const kafkaSupportedVersions = [
 
 export const RESERVED_CONFIG_YML_KEYS = [
   'bulk_max_size',
-  'workers',
+  'compression_level',
+  'connection_idle_timeout',
   'queue.mem.events',
-  'flush.min_events',
-  'flush.timeout',
-  'compression',
-  'idle_timeout',
+  'queue.mem.flush.min_events',
+  'queue.mem.flush.timeout',
+  'workers',
 ];
 
 export const OUTPUT_TYPES_WITH_PRESET_SUPPORT: Array<ValueOf<OutputType>> = [

x-pack/plugins/fleet/cypress/e2e/fleet_settings_outputs.cy.ts

@@ -5,6 +5,8 @@
  * 2.0.
  */
 
+import { RESERVED_CONFIG_YML_KEYS } from '../../common/constants';
+
 import {
   getSpecificSelectorId,
   SETTINGS_CONFIRM_MODAL_BTN,
@@ -32,30 +34,55 @@ import {
 } from '../screens/fleet_outputs';
 
 import { login } from '../tasks/login';
-
 import { visit } from '../tasks/common';
 
 export const fillYamlConfigBox = (query: string) => {
   cy.get('[data-test-subj="kibanaCodeEditor"] textarea').type(query, { force: true });
 };
 
+export const clearYamlConfigBox = () => {
+  cy.get('[data-test-subj="kibanaCodeEditor"] textarea').clear({ force: true });
+};
+
 describe('Outputs', () => {
   beforeEach(() => {
     login();
   });
 
   describe('Elasticsearch', () => {
     describe('Preset input', () => {
+      afterEach(() => {
+        clearYamlConfigBox();
+        cy.getBySel(SETTINGS_OUTPUTS.PRESET_INPUT).select('balanced');
+      });
+
       it('is set to balanced by default', () => {
         selectESOutput();
 
         cy.getBySel(SETTINGS_OUTPUTS.PRESET_INPUT).should('have.value', 'balanced');
       });
 
-      it('forces custom when reserved key is included in config YAML box', () => {
+      for (const keyword of RESERVED_CONFIG_YML_KEYS) {
+        it(`forces custom when reserved key ${keyword} is included in config YAML box`, () => {
+          selectESOutput();
+
+          fillYamlConfigBox(`${keyword}: value`);
+
+          cy.getBySel(SETTINGS_OUTPUTS.PRESET_INPUT)
+            .should('have.value', 'custom')
+            .should('be.disabled');
+        });
+      }
+
+      it('handles expanded syntax for reserved keys', () => {
         selectESOutput();
 
-        fillYamlConfigBox('bulk_max_size: 1000');
+        fillYamlConfigBox(`
+queue:
+  mem:
+    flush:
+      min_events: 100
+          `);
 
         cy.getBySel(SETTINGS_OUTPUTS.PRESET_INPUT)
           .should('have.value', 'custom')