LogInRequest usecase

gistfile1.txt

class LogInRequest(
    private val service: ApolloService
) : UseCase<LoginData, LoginResponse>() {
    override fun buildObservable(criteria: LoginData): Observable<LoginResponse> =
        service.logIn(criteria)
            .doOnError {
                if (it is HttpException) {
                    Throwable(getMessageByCode(it.code()))
                } else {
                    Throwable(it.message)
                }
            }
 }