/// <summary>
/// Configures the ASP.NET Core request pipeline to collect Prometheus metrics on processed HTTP requests.
///
/// If using ASP.NET Core 3 or newer, call this after .UseRouting().
/// </summary>
public static IApplicationBuilder UseHttpMetrics(this IApplicationBuilder app,
HttpMiddlewareExporterOptions?options = null)
{
if (options == null)
{
options = new HttpMiddlewareExporterOptions();
}
app.UseMiddleware <CaptureRouteDataMiddleware>();
if (options.InProgress.Enabled)
{
app.UseMiddleware <HttpInProgressMiddleware>(options.InProgress.Gauge);
}
if (options.RequestCount.Enabled)
{
app.UseMiddleware <HttpRequestCountMiddleware>(options.RequestCount.Counter);
}
if (options.RequestDuration.Enabled)
{
app.UseMiddleware <HttpRequestDurationMiddleware>(options.RequestDuration.Histogram);
}
return(app);
}
/// <summary>
/// Configures the ASP.NET Core request pipeline to collect Prometheus metrics on processed HTTP requests.
/// </summary>
public static IApplicationBuilder UseHttpMetrics(this IApplicationBuilder app,
Action <HttpMiddlewareExporterOptions> configure)
{
var options = new HttpMiddlewareExporterOptions();
configure?.Invoke(options);
app.UseHttpMetrics(options);
return(app);
}
/// <summary>
/// Application Monitoring - Configures (prometheus) monitoring middleware to IApplicationBuilder instance
/// </summary>
/// <param name="app">IApplicationBuilder instance.</param>
/// <param name="configuration">IConfiguration instance.</param>
/// <param name="logger">ILogger instance.</param>
/// <returns>Same IApplicationBuilder instance after configuring MonitoringMiddleware</returns>
public static IApplicationBuilder UseMonitoringService(this IApplicationBuilder app, IConfiguration configuration, Microsoft.Extensions.Logging.ILogger logger)
{
var traceConfiguration = new TraceConfiguration();
configuration.Bind(SerilogTrace, traceConfiguration);
Metrics.SuppressDefaultMetrics();
var options = new HttpMiddlewareExporterOptions();
options.RequestDuration.Histogram = Metrics.CreateHistogram("http_request_duration",
"The duration of HTTP requests processed by an ASP.NET Core application",
new HistogramConfiguration()
{
// 500 ms to 2000 ms and infinite buckets
Buckets = Histogram.ExponentialBuckets(0.500, 2, 3),
LabelNames = new[] { "code", "method", "controller", "action" },
SuppressInitialValue = true,
});
logger.LogInformation(AddingMonitoringMiddleware);
var pattern = traceConfiguration.ExcludePattern;
if (options.InProgress.Enabled)
{
app.UseMiddleware <HttpMetricsInProgressMiddleware>(options.InProgress.Gauge, pattern);
}
if (options.RequestCount.Enabled)
{
app.UseMiddleware <HttpMetricsCountMiddleware>(options.RequestCount.Counter, pattern);
}
if (options.RequestDuration.Enabled)
{
app.UseMiddleware <HttpMetricsDurationMiddleware>(options.RequestDuration.Histogram, pattern);
}
app.UseMetricServer();
logger.LogInformation(MonitoringMiddlewareAdded);
return(app);
}
/// <summary>
/// Configures the ASP.NET Core request pipeline to collect Prometheus metrics on processed HTTP requests.
/// </summary>
public static IApplicationBuilder UseHttpMetrics(this IApplicationBuilder app,
HttpMiddlewareExporterOptions options = null)
{
if (options == null)
{
options = new HttpMiddlewareExporterOptions();
}
if (options.InFlight.Enabled)
{
app.UseMiddleware <HttpInFlightMiddleware>(options.InFlight.Gauge);
}
if (options.RequestCount.Enabled)
{
app.UseMiddleware <HttpRequestCountMiddleware>(options.RequestCount.Counter);
}
if (options.RequestDuration.Enabled)
{
app.UseMiddleware <HttpRequestDurationMiddleware>(options.RequestDuration.Histogram);
}
return(app);
}
