Extend the hasData service to check for specific apps data.

[afgomez]

In the observability plugin we have an overview page that shows different metrics for the observability apps. The very first thing we check is if the app has data or not.

Since we have now a hasData service provided by kibana, it would be useful to perform the data checks for the applications in this service. That way the functionality is available for every body.

Proposed API

interface HasDataService {
  // ...
  hasAppData: (kibanaApp: string) => Promise<boolean>
}

where kibanaApp is the app identifier registered by the relevant plugin.

Example

const { dataViews } = useKibana().services;
const hasLogsData = await dataViews.hasData.hasAppData('logs'); // true | false

[elasticmachine]

Pinging @elastic/kibana-app-services (Team:AppServicesSv)

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[kertal]

Closing this because it's not planned to be resolved in the foreseeable future. It will be tracked in our Icebox and will be re-opened if our priorities change. Feel free to re-open if you think it should be melted sooner.