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Patterns
editPatterns
editScoped services
editWhenever Kibana needs to get access to data saved in Elasticsearch, it
should perform a check whether an end-user has access to the data.
The Kibana Platform introduced a handler interface on the server-side to perform that association
internally. Core services, that require impersonation with an incoming
request, are exposed via context
argument of
the request handler interface.
async function handler(context, req, res) { const data = await context.core.elasticsearch.client.asCurrentUser('ping'); }
The request handler context exposes the following scoped core services:
Declare a custom scoped service
editPlugins can extend the handler context with a custom API that will be available to the plugin itself and all dependent plugins. For example, the plugin creates a custom Elasticsearch client and wants to use it via the request handler context:
import type { CoreSetup, RequestHandlerContext, IScopedClusterClient } from '@kbn/core/server'; interface MyRequestHandlerContext extends RequestHandlerContext { myPlugin: { client: IScopedClusterClient; }; } class MyPlugin { setup(core: CoreSetup) { const client = core.elasticsearch.createClient('myClient'); core.http.registerRouteHandlerContext<MyRequestHandlerContext, 'myPlugin'>('myPlugin', (context, req, res) => { return { client: client.asScoped(req) }; }); const router = core.http.createRouter<MyRequestHandlerContext>(); router.get( { path: '/api/my-plugin/', validate: … }, async (context, req, res) => { // context type is inferred as MyPluginContext const data = await context.myPlugin.client.asCurrentUser('endpoint'); } ); }