public MetricsMiddleware(RequestDelegate next, IActionDescriptorCollectionProvider actionDescriptorCollectionProvider, MetricsMiddlewareOptions options)
{
_next = next;
_actionDescriptorCollectionProvider = actionDescriptorCollectionProvider;
_options = options;
ErrorRequestsProcessed = Metrics.CreateCounter("server_request_error_total", "Number of unsuccessfull processed requests.", "method", "error_code");
OngoingRequests = Metrics.CreateGauge("server_request_in_progress", "Number of ongoing requests.", "method");
RequestResponseHistogram = Metrics.CreateHistogram("server_request_duration_seconds", "Histogram of request duration in seconds.",
new HistogramConfiguration()
{
LabelNames = new string[] { "method" },
Buckets = _options.Buckets
});
}
public static IApplicationBuilder UseMetricsMiddleware(this IApplicationBuilder builder, MetricsMiddlewareOptions options = null)
{
return(builder.UseMiddleware <MetricsMiddleware>(options ?? new MetricsMiddlewareOptions()));
}