public static IObservabilityBuilder AddAspNetMetrics(this IObservabilityBuilder builder, Action <AspNetMetricsOptions>?configureOptions = null)
{
if (builder is null)
{
throw new ArgumentNullException(nameof(builder));
}
var options = new AspNetMetricsOptions();
configureOptions?.Invoke(options);
return(builder.AddDiagnosticSource("Microsoft.AspNetCore", new AspNetMetricsObserver(options)));
}
public AspNetMetricsObserver(AspNetMetricsOptions options, IMetrics metrics)
{
_options = options ?? throw new ArgumentNullException(nameof(options));
_metrics = metrics ?? throw new ArgumentNullException(nameof(metrics));
// Support overrides here
_httpErrorsTotalMetric = CreateErrorTotalCounter();
_httpRequestsInProgressMetric = CreateRequestsInProgressGauge();
_httpRequestDurationMetric = options.RequestDurationMetricType switch
{
ObserverMetricType.Summary => CreateHttpRequestDurationSummary(),
_ => CreateHttpRequestDurationHistogram()
};
}
public AspNetMetricsObserver(AspNetMetricsOptions options)
: this(options, new PrometheusMetrics())
{
}