Can't use Prometheus formatter - possibly example is wrong

[Alex Maslyukov]

Hi there,
I am trying to integrate Metrics into ASP net Core project and trying to use Prometheus formatter:
https://www.app-metrics.io/reporting/reporters/prometheus/

The line I am stuck is the following:

   .UseMetrics(
                        options =>
                        {
                            options.EndpointOptions = endpointsOptions =>
                            {
                                endpointsOptions.MetricsTextEndpointOutputFormatter = metrics.OutputMetricsFormatters.GetType<MetricsPrometheusTextOutputFormatter>();
                                endpointsOptions.MetricsEndpointOutputFormatter = metrics.OutputMetricsFormatters.GetType<MetricsPrometheusProtobufOutputFormatter>();
                            };
                        })
          

of course this line fails:

The non-generic method 'object.GetType()' cannot be used with type arguments

I believe there is some kind of error in documentation - instead of GetType - it has to find special formatter using some other means...

[Allan Hardy]

Thanks, I'll take a look

[Allan Hardy]

@FastNinja GetType is a custom extension method, yes not obvious I'll change this. Try importing the following namespace: App.Metrics.Formatters