[NP] Platform exposes API to get authenticated user data (elastic#55327)

* expose auth.get/isAuthenticated. move getAuthHeaders to internal type

* update mocks

* update docs

* update docs

* add integration test for auth

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

@@ -1,17 +1,17 @@
-<!-- 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; [getStartServices](./kibana-plugin-server.coresetup.getstartservices.md)
-
-## CoreSetup.getStartServices() method
-
-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`<!-- -->. This should only be used inside handlers registered during `setup` that will only be executed after `start` lifecycle.
-
-<b>Signature:</b>
-
-```typescript
-getStartServices(): Promise<[CoreStart, TPluginsStart]>;
-```
-<b>Returns:</b>
-
-`Promise<[CoreStart, TPluginsStart]>`
-
+<!-- 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; [getStartServices](./kibana-plugin-server.coresetup.getstartservices.md)
+
+## CoreSetup.getStartServices() method
+
+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`<!-- -->. This should only be used inside handlers registered during `setup` that will only be executed after `start` lifecycle.
+
+<b>Signature:</b>
+
+```typescript
+getStartServices(): Promise<[CoreStart, TPluginsStart]>;
+```
+<b>Returns:</b>
+
+`Promise<[CoreStart, TPluginsStart]>`
+

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

@@ -1,32 +1,32 @@
-<!-- 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)
-
-## CoreSetup interface
-
-Context passed to the plugins `setup` method.
-
-<b>Signature:</b>
-
-```typescript
-export interface CoreSetup<TPluginsStart extends object = object> 
-```
-
-## Properties
-
-|  Property | Type | Description |
-|  --- | --- | --- |
-|  [capabilities](./kibana-plugin-server.coresetup.capabilities.md) | <code>CapabilitiesSetup</code> | [CapabilitiesSetup](./kibana-plugin-server.capabilitiessetup.md) |
-|  [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) |
-|  [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) |
-
-## Methods
-
-|  Method | Description |
-|  --- | --- |
-|  [getStartServices()](./kibana-plugin-server.coresetup.getstartservices.md) | Allows plugins to get access to APIs available in start inside async handlers. Promise will not resolve until Core and plugin dependencies have completed <code>start</code>. This should only be used inside handlers registered during <code>setup</code> that will only be executed after <code>start</code> lifecycle. |
-
+<!-- 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)
+
+## CoreSetup interface
+
+Context passed to the plugins `setup` method.
+
+<b>Signature:</b>
+
+```typescript
+export interface CoreSetup<TPluginsStart extends object = object> 
+```
+
+## Properties
+
+|  Property | Type | Description |
+|  --- | --- | --- |
+|  [capabilities](./kibana-plugin-server.coresetup.capabilities.md) | <code>CapabilitiesSetup</code> | [CapabilitiesSetup](./kibana-plugin-server.capabilitiessetup.md) |
+|  [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) |
+|  [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) |
+
+## Methods
+
+|  Method | Description |
+|  --- | --- |
+|  [getStartServices()](./kibana-plugin-server.coresetup.getstartservices.md) | Allows plugins to get access to APIs available in start inside async handlers. Promise will not resolve until Core and plugin dependencies have completed <code>start</code>. This should only be used inside handlers registered during <code>setup</code> that will only be executed after <code>start</code> lifecycle. |
+

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

@@ -4,13 +4,13 @@
 
 ## GetAuthState type
 
-Get authentication state for a request. Returned by `auth` interceptor.
+Gets authentication state for a request. Returned by `auth` interceptor.
 
 <b>Signature:</b>
 
 ```typescript
-export declare type GetAuthState = (request: KibanaRequest | LegacyRequest) => {
+export declare type GetAuthState = <T = unknown>(request: KibanaRequest | LegacyRequest) => {
     status: AuthStatus;
-    state: unknown;
+    state: T;
 };
 ```

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

@@ -0,0 +1,14 @@
+<!-- Do not edit this file. It is automatically generated by API Documenter. -->
+
+[Home](./index.md) &gt; [kibana-plugin-server](./kibana-plugin-server.md) &gt; [HttpServiceSetup](./kibana-plugin-server.httpservicesetup.md) &gt; [auth](./kibana-plugin-server.httpservicesetup.auth.md)
+
+## HttpServiceSetup.auth property
+
+<b>Signature:</b>
+
+```typescript
+auth: {
+        get: GetAuthState;
+        isAuthenticated: IsAuthenticated;
+    };
+```

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

@@ -81,6 +81,7 @@ async (context, request, response) => {
 
 |  Property | Type | Description |
 |  --- | --- | --- |
+|  [auth](./kibana-plugin-server.httpservicesetup.auth.md) | <code>{</code><br/><code>        get: GetAuthState;</code><br/><code>        isAuthenticated: IsAuthenticated;</code><br/><code>    }</code> |  |
 |  [basePath](./kibana-plugin-server.httpservicesetup.basepath.md) | <code>IBasePath</code> | Access or manipulate the Kibana base path See [IBasePath](./kibana-plugin-server.ibasepath.md)<!-- -->. |
 |  [createCookieSessionStorageFactory](./kibana-plugin-server.httpservicesetup.createcookiesessionstoragefactory.md) | <code>&lt;T&gt;(cookieOptions: SessionStorageCookieOptions&lt;T&gt;) =&gt; Promise&lt;SessionStorageFactory&lt;T&gt;&gt;</code> | Creates cookie based session storage factory [SessionStorageFactory](./kibana-plugin-server.sessionstoragefactory.md) |
 |  [createRouter](./kibana-plugin-server.httpservicesetup.createrouter.md) | <code>() =&gt; IRouter</code> | Provides ability to declare a handler function for a particular path and HTTP request method. |

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

@@ -4,7 +4,7 @@
 
 ## IsAuthenticated type
 
-Return authentication status for a request.
+Returns authentication status for a request.
 
 <b>Signature:</b>