public static IServiceCollection AddMetrics(this IServiceCollection services, Action <MetricsBuilder> configure)
{
if (services == null)
{
throw new ArgumentNullException(nameof(services));
}
services.AddOptions();
services.AddSingleton <IMetricsBuilder, MetricsBuilder>(r =>
{
var builder = new MetricsBuilder(services, services.AddHealthChecks());
configure(builder);
return(builder);
});
services.TryAddSingleton <IMetricsStore, MemoryMetricsStore>();
services.TryAddSingleton <IMetricsHost>(r =>
{
var host = new MetricsHost(r.GetRequiredService <IMetricsStore>());
return(host);
});
services.TryAddSingleton <IMetricsRegistry>(r =>
{
var registry = new MemoryMetricsRegistry
{
r.GetRequiredService <IMetricsHost>()
};
return(registry);
});
services.TryAdd(ServiceDescriptor.Singleton(typeof(IMetricsHost <>), typeof(MetricsHost <>)));
services.TryAddEnumerable(ServiceDescriptor.Singleton <IHostedService, EventSourceHostedService>());
return(services);
}