Expose metrics service to public API (#59294) (#59355)

* expose metrics service to public API

* update generated doc

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

@@ -20,6 +20,7 @@ export interface CoreSetup<TPluginsStart extends object = object>
 |  [context](./kibana-plugin-server.coresetup.context.md) | <code>ContextSetup</code> | [ContextSetup](./kibana-plugin-server.contextsetup.md) |
 |  [elasticsearch](./kibana-plugin-server.coresetup.elasticsearch.md) | <code>ElasticsearchServiceSetup</code> | [ElasticsearchServiceSetup](./kibana-plugin-server.elasticsearchservicesetup.md) |
 |  [http](./kibana-plugin-server.coresetup.http.md) | <code>HttpServiceSetup</code> | [HttpServiceSetup](./kibana-plugin-server.httpservicesetup.md) |
+|  [metrics](./kibana-plugin-server.coresetup.metrics.md) | <code>MetricsServiceSetup</code> | [MetricsServiceSetup](./kibana-plugin-server.metricsservicesetup.md) |
 |  [savedObjects](./kibana-plugin-server.coresetup.savedobjects.md) | <code>SavedObjectsServiceSetup</code> | [SavedObjectsServiceSetup](./kibana-plugin-server.savedobjectsservicesetup.md) |
 |  [uiSettings](./kibana-plugin-server.coresetup.uisettings.md) | <code>UiSettingsServiceSetup</code> | [UiSettingsServiceSetup](./kibana-plugin-server.uisettingsservicesetup.md) |
 |  [uuid](./kibana-plugin-server.coresetup.uuid.md) | <code>UuidServiceSetup</code> | [UuidServiceSetup](./kibana-plugin-server.uuidservicesetup.md) |

docs/development/core/server/kibana-plugin-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-server](./kibana-plugin-server.md) &gt; [CoreSetup](./kibana-plugin-server.coresetup.md) &gt; [metrics](./kibana-plugin-server.coresetup.metrics.md)
+
+## CoreSetup.metrics property
+
+[MetricsServiceSetup](./kibana-plugin-server.metricsservicesetup.md)
+
+<b>Signature:</b>
+
+```typescript
+metrics: MetricsServiceSetup;
+```

src/core/server/index.ts

@@ -54,6 +54,7 @@ import { SavedObjectsClientContract } from './saved_objects/types';
 import { SavedObjectsServiceSetup, SavedObjectsServiceStart } from './saved_objects';
 import { CapabilitiesSetup, CapabilitiesStart } from './capabilities';
 import { UuidServiceSetup } from './uuid';
+import { MetricsServiceSetup } from './metrics';
 
 export { bootstrap } from './bootstrap';
 export { Capabilities, CapabilitiesProvider, CapabilitiesSwitcher } from './capabilities';
@@ -335,6 +336,8 @@ export interface CoreSetup<TPluginsStart extends object = object> {
   uiSettings: UiSettingsServiceSetup;
   /** {@link UuidServiceSetup} */
   uuid: UuidServiceSetup;
+  /** {@link MetricsServiceSetup} */
+  metrics: MetricsServiceSetup;
   /**
    * Allows plugins to get access to APIs available in start inside async handlers.
    * Promise will not resolve until Core and plugin dependencies have completed `start`.

src/core/server/legacy/legacy_service.ts

@@ -296,6 +296,9 @@ export class LegacyService implements CoreService {
         isTlsEnabled: setupDeps.core.http.isTlsEnabled,
         getServerInfo: setupDeps.core.http.getServerInfo,
       },
+      metrics: {
+        getOpsMetrics$: setupDeps.core.metrics.getOpsMetrics$,
+      },
       savedObjects: {
         setClientFactoryProvider: setupDeps.core.savedObjects.setClientFactoryProvider,
         addClientWrapper: setupDeps.core.savedObjects.addClientWrapper,

src/core/server/mocks.ts

@@ -128,6 +128,7 @@ function createCoreSetupMock() {
     savedObjects: savedObjectsServiceMock.createInternalSetupContract(),
     uiSettings: uiSettingsMock,
     uuid: uuidServiceMock.createSetupContract(),
+    metrics: metricsServiceMock.createSetupContract(),
     getStartServices: jest
       .fn<Promise<[ReturnType<typeof createCoreStartMock>, object]>, []>()
       .mockResolvedValue([createCoreStartMock(), {}]),

src/core/server/plugins/plugin_context.ts

@@ -166,6 +166,9 @@ export function createPluginSetupContext<TPlugin, TPluginDependencies>(
       isTlsEnabled: deps.http.isTlsEnabled,
       getServerInfo: deps.http.getServerInfo,
     },
+    metrics: {
+      getOpsMetrics$: deps.metrics.getOpsMetrics$,
+    },
     savedObjects: {
       setClientFactoryProvider: deps.savedObjects.setClientFactoryProvider,
       addClientWrapper: deps.savedObjects.addClientWrapper,

src/core/server/server.api.md

@@ -606,6 +606,8 @@ export interface CoreSetup<TPluginsStart extends object = object> {
     // (undocumented)
     http: HttpServiceSetup;
     // (undocumented)
+    metrics: MetricsServiceSetup;
+    // (undocumented)
     savedObjects: SavedObjectsServiceSetup;
     // (undocumented)
     uiSettings: UiSettingsServiceSetup;