`NetworkStatus.loading` available globally on `ApolloClient`?

Is there any way to determine whether NetworkStatus.loading is true for any currently executing ApolloClient operation?

I’d like to create an application-wide network activity indicator component in an Apollo-Angular project without having each Apollo client .query/.watchQuery/.mutate call report its NetworkStatus.loading. I thought of using middleware/afterware hooks in ApolloClientConfig.networkInterface, but since the Apollo client is configured in the AppModule decorator, it’s not easy to construct a hook that would report Apollo network activity in a way that would be available to an Angular component via an injected service.

[KeithGillette]

Thanks so much! With the help of the apollo-client and angular-apollo migration guides, the howtographql/angular-apollo example, and @kamilkisiela’s expert guidance, I got our project upgraded to ApolloClient 2.0.1 + Angular-Apollo 1.0.0 with apollo-angular-link-http. I successfully tested a third-party Angular network activity/loading component that intercepts Angular HttpClient used by apollo-angular-link-http, so for now I’ll leave my custom link writing to the one I needed for Meteor authentication with apollo-angular-link-http:

const meteorAuthenticationMiddleWareLink = new ApolloLink((operation: Operation, forward: NextLink): Observable<FetchResult> => {
	const meteorAuthenticationToken = Accounts._storedLoginToken();
	if (meteorAuthenticationToken) {
		const headers = new HttpHeaders({'meteor-login-token': Accounts._storedLoginToken()});
		operation.setContext({headers});
	}
	return forward(operation);
});

[kamilkisiela]

@KeithGillette that’s great! Thanks to using HttpClient we gain so many things like NativeScript support, SSR, features like that one you mentioned! If you have any questions feel free to message me on slack (same user handle)