Migrate status & stats APIs to KP + remove legacy status lib (#76054)

* Complete migration of legacy status API

* PR comments

* Remove optional auth on stats endpoint

* Regen docs

* PR comments

* PR nits

* Set ReplaySubject buffer to 1

* Fix exclude_usage logic

Co-authored-by: pgayvallet <pierre.gayvallet@elastic.co>

.i18nrc.json

@@ -57,7 +57,8 @@
     "visTypeXy": "src/plugins/vis_type_xy",
     "visualizations": "src/plugins/visualizations",
     "visualize": "src/plugins/visualize",
-    "apmOss": "src/plugins/apm_oss"
+    "apmOss": "src/plugins/apm_oss",
+    "usageCollection": "src/plugins/usage_collection"
   },
   "exclude": [
     "src/legacy/ui/ui_render/ui_render_mixin.js"

docs/development/core/server/kibana-plugin-core-server.coresetup.md

@@ -23,6 +23,7 @@ export interface CoreSetup<TPluginsStart extends object = object, TStart = unkno
 |  [getStartServices](./kibana-plugin-core-server.coresetup.getstartservices.md) | <code>StartServicesAccessor&lt;TPluginsStart, TStart&gt;</code> | [StartServicesAccessor](./kibana-plugin-core-server.startservicesaccessor.md) |
 |  [http](./kibana-plugin-core-server.coresetup.http.md) | <code>HttpServiceSetup &amp; {</code><br/><code>        resources: HttpResources;</code><br/><code>    }</code> | [HttpServiceSetup](./kibana-plugin-core-server.httpservicesetup.md) |
 |  [logging](./kibana-plugin-core-server.coresetup.logging.md) | <code>LoggingServiceSetup</code> | [LoggingServiceSetup](./kibana-plugin-core-server.loggingservicesetup.md) |
+|  [metrics](./kibana-plugin-core-server.coresetup.metrics.md) | <code>MetricsServiceSetup</code> | [MetricsServiceSetup](./kibana-plugin-core-server.metricsservicesetup.md) |
 |  [savedObjects](./kibana-plugin-core-server.coresetup.savedobjects.md) | <code>SavedObjectsServiceSetup</code> | [SavedObjectsServiceSetup](./kibana-plugin-core-server.savedobjectsservicesetup.md) |
 |  [status](./kibana-plugin-core-server.coresetup.status.md) | <code>StatusServiceSetup</code> | [StatusServiceSetup](./kibana-plugin-core-server.statusservicesetup.md) |
 |  [uiSettings](./kibana-plugin-core-server.coresetup.uisettings.md) | <code>UiSettingsServiceSetup</code> | [UiSettingsServiceSetup](./kibana-plugin-core-server.uisettingsservicesetup.md) |

docs/development/core/server/kibana-plugin-core-server.coresetup.metrics.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [CoreSetup](./kibana-plugin-core-server.coresetup.md) &gt; [metrics](./kibana-plugin-core-server.coresetup.metrics.md)
+
+## CoreSetup.metrics property
+
+[MetricsServiceSetup](./kibana-plugin-core-server.metricsservicesetup.md)
+
+<b>Signature:</b>
+
+```typescript
+metrics: MetricsServiceSetup;
+```

docs/development/core/server/kibana-plugin-core-server.corestart.md

@@ -20,7 +20,7 @@ export interface CoreStart
 |  [capabilities](./kibana-plugin-core-server.corestart.capabilities.md) | <code>CapabilitiesStart</code> | [CapabilitiesStart](./kibana-plugin-core-server.capabilitiesstart.md) |
 |  [elasticsearch](./kibana-plugin-core-server.corestart.elasticsearch.md) | <code>ElasticsearchServiceStart</code> | [ElasticsearchServiceStart](./kibana-plugin-core-server.elasticsearchservicestart.md) |
 |  [http](./kibana-plugin-core-server.corestart.http.md) | <code>HttpServiceStart</code> | [HttpServiceStart](./kibana-plugin-core-server.httpservicestart.md) |
-|  [metrics](./kibana-plugin-core-server.corestart.metrics.md) | <code>MetricsServiceStart</code> |  |
+|  [metrics](./kibana-plugin-core-server.corestart.metrics.md) | <code>MetricsServiceStart</code> | [MetricsServiceStart](./kibana-plugin-core-server.metricsservicestart.md) |
 |  [savedObjects](./kibana-plugin-core-server.corestart.savedobjects.md) | <code>SavedObjectsServiceStart</code> | [SavedObjectsServiceStart](./kibana-plugin-core-server.savedobjectsservicestart.md) |
 |  [uiSettings](./kibana-plugin-core-server.corestart.uisettings.md) | <code>UiSettingsServiceStart</code> | [UiSettingsServiceStart](./kibana-plugin-core-server.uisettingsservicestart.md) |
 

docs/development/core/server/kibana-plugin-core-server.corestart.metrics.md

@@ -4,6 +4,7 @@
 
 ## CoreStart.metrics property
 
+[MetricsServiceStart](./kibana-plugin-core-server.metricsservicestart.md)
 
 <b>Signature:</b>
 

docs/development/core/server/kibana-plugin-core-server.md

@@ -253,6 +253,7 @@ The plugin integrates with the core system via lifecycle events: `setup`<!-- -->
 |  [LegacyElasticsearchClientConfig](./kibana-plugin-core-server.legacyelasticsearchclientconfig.md) |  |
 |  [LifecycleResponseFactory](./kibana-plugin-core-server.lifecycleresponsefactory.md) | Creates an object containing redirection or error response with error details, HTTP headers, and other data transmitted to the client. |
 |  [LoggerConfigType](./kibana-plugin-core-server.loggerconfigtype.md) |  |
+|  [MetricsServiceStart](./kibana-plugin-core-server.metricsservicestart.md) | APIs to retrieves metrics gathered and exposed by the core platform. |
 |  [MIGRATION\_ASSISTANCE\_INDEX\_ACTION](./kibana-plugin-core-server.migration_assistance_index_action.md) |  |
 |  [MIGRATION\_DEPRECATION\_LEVEL](./kibana-plugin-core-server.migration_deprecation_level.md) |  |
 |  [MutatingOperationRefreshSetting](./kibana-plugin-core-server.mutatingoperationrefreshsetting.md) | Elasticsearch Refresh setting for mutating operation |

docs/development/core/server/kibana-plugin-core-server.metricsservicestart.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [MetricsServiceStart](./kibana-plugin-core-server.metricsservicestart.md)
+
+## MetricsServiceStart type
+
+APIs to retrieves metrics gathered and exposed by the core platform.
+
+<b>Signature:</b>
+
+```typescript
+export declare type MetricsServiceStart = MetricsServiceSetup;
+```

docs/development/core/server/kibana-plugin-core-server.servicestatuslevels.md

@@ -13,18 +13,22 @@ ServiceStatusLevels: Readonly<{
     available: Readonly<{
         toString: () => "available";
         valueOf: () => 0;
+        toJSON: () => "available";
     }>;
     degraded: Readonly<{
         toString: () => "degraded";
         valueOf: () => 1;
+        toJSON: () => "degraded";
     }>;
     unavailable: Readonly<{
         toString: () => "unavailable";
         valueOf: () => 2;
+        toJSON: () => "unavailable";
     }>;
     critical: Readonly<{
         toString: () => "critical";
         valueOf: () => 3;
+        toJSON: () => "critical";
     }>;
 }>
 ```

docs/development/core/server/kibana-plugin-core-server.statusservicesetup.isstatuspageanonymous.md

@@ -0,0 +1,13 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-core-server](./kibana-plugin-core-server.md) &gt; [StatusServiceSetup](./kibana-plugin-core-server.statusservicesetup.md) &gt; [isStatusPageAnonymous](./kibana-plugin-core-server.statusservicesetup.isstatuspageanonymous.md)
+
+## StatusServiceSetup.isStatusPageAnonymous property
+
+Whether or not the status HTTP APIs are available to unauthenticated users when an authentication provider is present.
+
+<b>Signature:</b>
+
+```typescript
+isStatusPageAnonymous: () => boolean;
+```

docs/development/core/server/kibana-plugin-core-server.statusservicesetup.md

@@ -74,6 +74,7 @@ core.status.set(
 |  [core$](./kibana-plugin-core-server.statusservicesetup.core_.md) | <code>Observable&lt;CoreStatus&gt;</code> | Current status for all Core services. |
 |  [dependencies$](./kibana-plugin-core-server.statusservicesetup.dependencies_.md) | <code>Observable&lt;Record&lt;string, ServiceStatus&gt;&gt;</code> | Current status for all plugins this plugin depends on. Each key of the <code>Record</code> is a plugin id. |
 |  [derivedStatus$](./kibana-plugin-core-server.statusservicesetup.derivedstatus_.md) | <code>Observable&lt;ServiceStatus&gt;</code> | The status of this plugin as derived from its dependencies. |
+|  [isStatusPageAnonymous](./kibana-plugin-core-server.statusservicesetup.isstatuspageanonymous.md) | <code>() =&gt; boolean</code> | Whether or not the status HTTP APIs are available to unauthenticated users when an authentication provider is present. |
 |  [overall$](./kibana-plugin-core-server.statusservicesetup.overall_.md) | <code>Observable&lt;ServiceStatus&gt;</code> | Overall system status for all of Kibana. |
 
 ## Methods

src/core/server/elasticsearch/version_check/ensure_es_version.ts

@@ -72,7 +72,7 @@ export function mapNodesVersionCompatibility(
   kibanaVersion: string,
   ignoreVersionMismatch: boolean
 ): NodesVersionCompatibility {
-  if (Object.keys(nodesInfo.nodes).length === 0) {
+  if (Object.keys(nodesInfo.nodes ?? {}).length === 0) {
     return {
       isCompatible: false,
       message: 'Unable to retrieve version information from Elasticsearch nodes.',

src/core/server/index.ts

@@ -60,7 +60,7 @@ import {
   SavedObjectsServiceStart,
 } from './saved_objects';
 import { CapabilitiesSetup, CapabilitiesStart } from './capabilities';
-import { MetricsServiceStart } from './metrics';
+import { MetricsServiceSetup, MetricsServiceStart } from './metrics';
 import { StatusServiceSetup } from './status';
 import { Auditor, AuditTrailSetup, AuditTrailStart } from './audit_trail';
 import { AppenderConfigType, appendersSchema, LoggingServiceSetup } from './logging';
@@ -320,6 +320,7 @@ export {
   OpsServerMetrics,
   OpsProcessMetrics,
   MetricsServiceSetup,
+  MetricsServiceStart,
 } from './metrics';
 
 export { DEFAULT_APP_CATEGORIES } from '../utils';
@@ -414,6 +415,8 @@ export interface CoreSetup<TPluginsStart extends object = object, TStart = unkno
   };
   /** {@link LoggingServiceSetup} */
   logging: LoggingServiceSetup;
+  /** {@link MetricsServiceSetup} */
+  metrics: MetricsServiceSetup;
   /** {@link SavedObjectsServiceSetup} */
   savedObjects: SavedObjectsServiceSetup;
   /** {@link StatusServiceSetup} */

src/core/server/internal_types.ts

@@ -33,7 +33,7 @@ import {
 } from './saved_objects';
 import { InternalUiSettingsServiceSetup, InternalUiSettingsServiceStart } from './ui_settings';
 import { InternalEnvironmentServiceSetup } from './environment';
-import { InternalMetricsServiceStart } from './metrics';
+import { InternalMetricsServiceSetup, InternalMetricsServiceStart } from './metrics';
 import { InternalRenderingServiceSetup } from './rendering';
 import { InternalHttpResourcesSetup } from './http_resources';
 import { InternalStatusServiceSetup } from './status';
@@ -54,6 +54,7 @@ export interface InternalCoreSetup {
   httpResources: InternalHttpResourcesSetup;
   auditTrail: AuditTrailSetup;
   logging: InternalLoggingServiceSetup;
+  metrics: InternalMetricsServiceSetup;
 }
 
 /**

src/core/server/legacy/legacy_service.test.ts

@@ -51,6 +51,7 @@ import { coreMock } from '../mocks';
 import { statusServiceMock } from '../status/status_service.mock';
 import { auditTrailServiceMock } from '../audit_trail/audit_trail_service.mock';
 import { loggingServiceMock } from '../logging/logging_service.mock';
+import { metricsServiceMock } from '../metrics/metrics_service.mock';
 
 const MockKbnServer: jest.Mock<KbnServer> = KbnServer as any;
 
@@ -99,6 +100,7 @@ beforeEach(() => {
       status: statusServiceMock.createInternalSetupContract(),
       auditTrail: auditTrailServiceMock.createSetupContract(),
       logging: loggingServiceMock.createInternalSetupContract(),
+      metrics: metricsServiceMock.createInternalSetupContract(),
     },
     plugins: { 'plugin-id': 'plugin-value' },
     uiPlugins: {

src/core/server/legacy/legacy_service.ts

@@ -302,13 +302,18 @@ export class LegacyService implements CoreService {
       logging: {
         configure: (config$) => setupDeps.core.logging.configure([], config$),
       },
+      metrics: {
+        collectionInterval: setupDeps.core.metrics.collectionInterval,
+        getOpsMetrics$: setupDeps.core.metrics.getOpsMetrics$,
+      },
       savedObjects: {
         setClientFactoryProvider: setupDeps.core.savedObjects.setClientFactoryProvider,
         addClientWrapper: setupDeps.core.savedObjects.addClientWrapper,
         registerType: setupDeps.core.savedObjects.registerType,
         getImportExportObjectLimit: setupDeps.core.savedObjects.getImportExportObjectLimit,
       },
       status: {
+        isStatusPageAnonymous: setupDeps.core.status.isStatusPageAnonymous,
         core$: setupDeps.core.status.core$,
         overall$: setupDeps.core.status.overall$,
         set: () => {

src/core/server/metrics/metrics_service.mock.ts

@@ -78,8 +78,8 @@ type MetricsServiceContract = PublicMethodsOf<MetricsService>;
 
 const createMock = () => {
   const mocked: jest.Mocked<MetricsServiceContract> = {
-    setup: jest.fn().mockReturnValue(createInternalSetupContractMock()),
-    start: jest.fn().mockReturnValue(createInternalStartContractMock()),
+    setup: jest.fn().mockReturnValue(createSetupContractMock()),
+    start: jest.fn().mockReturnValue(createStartContractMock()),
     stop: jest.fn(),
   };
   return mocked;

src/core/server/mocks.ts

@@ -52,6 +52,7 @@ export { typeRegistryMock as savedObjectsTypeRegistryMock } from './saved_object
 export { uiSettingsServiceMock } from './ui_settings/ui_settings_service.mock';
 export { metricsServiceMock } from './metrics/metrics_service.mock';
 export { renderingMock } from './rendering/rendering_service.mock';
+export { statusServiceMock } from './status/status_service.mock';
 export { contextServiceMock } from './context/context_service.mock';
 
 export function pluginInitializerContextConfigMock<T>(config: T) {
@@ -138,6 +139,7 @@ function createCoreSetupMock({
     uiSettings: uiSettingsMock,
     auditTrail: auditTrailServiceMock.createSetupContract(),
     logging: loggingServiceMock.createSetupContract(),
+    metrics: metricsServiceMock.createSetupContract(),
     getStartServices: jest
       .fn<Promise<[ReturnType<typeof createCoreStartMock>, object, any]>, []>()
       .mockResolvedValue([createCoreStartMock(), pluginStartDeps, pluginStartContract]),
@@ -174,6 +176,7 @@ function createInternalCoreSetupMock() {
     uiSettings: uiSettingsServiceMock.createSetupContract(),
     auditTrail: auditTrailServiceMock.createSetupContract(),
     logging: loggingServiceMock.createInternalSetupContract(),
+    metrics: metricsServiceMock.createInternalSetupContract(),
   };
   return setupDeps;
 }
@@ -183,7 +186,7 @@ function createInternalCoreStartMock() {
     capabilities: capabilitiesServiceMock.createStartContract(),
     elasticsearch: elasticsearchServiceMock.createInternalStart(),
     http: httpServiceMock.createInternalStartContract(),
-    metrics: metricsServiceMock.createStartContract(),
+    metrics: metricsServiceMock.createInternalStartContract(),
     savedObjects: savedObjectsServiceMock.createInternalStartContract(),
     uiSettings: uiSettingsServiceMock.createStartContract(),
     auditTrail: auditTrailServiceMock.createStartContract(),

src/core/server/plugins/plugin_context.ts

@@ -179,6 +179,10 @@ export function createPluginSetupContext<TPlugin, TPluginDependencies>(
     logging: {
       configure: (config$) => deps.logging.configure(['plugins', plugin.name], config$),
     },
+    metrics: {
+      collectionInterval: deps.metrics.collectionInterval,
+      getOpsMetrics$: deps.metrics.getOpsMetrics$,
+    },
     savedObjects: {
       setClientFactoryProvider: deps.savedObjects.setClientFactoryProvider,
       addClientWrapper: deps.savedObjects.addClientWrapper,
@@ -191,6 +195,7 @@ export function createPluginSetupContext<TPlugin, TPluginDependencies>(
       set: deps.status.plugins.set.bind(null, plugin.name),
       dependencies$: deps.status.plugins.getDependenciesStatus$(plugin.name),
       derivedStatus$: deps.status.plugins.getDerivedStatus$(plugin.name),
+      isStatusPageAnonymous: deps.status.isStatusPageAnonymous,
     },
     uiSettings: {
       register: deps.uiSettings.register,

src/core/server/server.api.md

@@ -416,6 +416,8 @@ export interface CoreSetup<TPluginsStart extends object = object, TStart = unkno
     // (undocumented)
     logging: LoggingServiceSetup;
     // (undocumented)
+    metrics: MetricsServiceSetup;
+    // (undocumented)
     savedObjects: SavedObjectsServiceSetup;
     // (undocumented)
     status: StatusServiceSetup;
@@ -433,9 +435,6 @@ export interface CoreStart {
     elasticsearch: ElasticsearchServiceStart;
     // (undocumented)
     http: HttpServiceStart;
-    // Warning: (ae-forgotten-export) The symbol "MetricsServiceStart" needs to be exported by the entry point index.d.ts
-    // Warning: (ae-unresolved-link) The @link reference could not be resolved: The package "kibana" does not have an export "MetricsServiceStart"
-    //
     // (undocumented)
     metrics: MetricsServiceStart;
     // (undocumented)
@@ -1431,6 +1430,9 @@ export interface MetricsServiceSetup {
     getOpsMetrics$: () => Observable<OpsMetrics>;
 }
 
+// @public
+export type MetricsServiceStart = MetricsServiceSetup;
+
 // @public @deprecated (undocumented)
 export type MIGRATION_ASSISTANCE_INDEX_ACTION = 'upgrade' | 'reindex';
 
@@ -2589,18 +2591,22 @@ export const ServiceStatusLevels: Readonly<{
     available: Readonly<{
         toString: () => "available";
         valueOf: () => 0;
+        toJSON: () => "available";
     }>;
     degraded: Readonly<{
         toString: () => "degraded";
         valueOf: () => 1;
+        toJSON: () => "degraded";
     }>;
     unavailable: Readonly<{
         toString: () => "unavailable";
         valueOf: () => 2;
+        toJSON: () => "unavailable";
     }>;
     critical: Readonly<{
         toString: () => "critical";
         valueOf: () => 3;
+        toJSON: () => "critical";
     }>;
 }>;
 
@@ -2676,6 +2682,7 @@ export interface StatusServiceSetup {
     dependencies$: Observable<Record<string, ServiceStatus>>;
     // Warning: (ae-unresolved-link) The @link reference could not be resolved: The package "kibana" does not have an export "StatusSetup"
     derivedStatus$: Observable<ServiceStatus>;
+    isStatusPageAnonymous: () => boolean;
     overall$: Observable<ServiceStatus>;
     set(status$: Observable<ServiceStatus>): void;
 }

src/core/server/server.ts

@@ -152,12 +152,15 @@ export class Server {
       savedObjects: savedObjectsSetup,
     });
 
-    await this.metrics.setup({ http: httpSetup });
+    const metricsSetup = await this.metrics.setup({ http: httpSetup });
 
     const statusSetup = await this.status.setup({
       elasticsearch: elasticsearchServiceSetup,
       pluginDependencies: pluginTree.asNames,
       savedObjects: savedObjectsSetup,
+      environment: environmentSetup,
+      http: httpSetup,
+      metrics: metricsSetup,
     });
 
     const renderingSetup = await this.rendering.setup({
@@ -189,6 +192,7 @@ export class Server {
       httpResources: httpResourcesSetup,
       auditTrail: auditTrailSetup,
       logging: loggingSetup,
+      metrics: metricsSetup,
     };
 
     const pluginsSetup = await this.plugins.setup(coreSetup);