/// <summary>
/// Add Metrics Middleware to the Owin pipeline.
/// Sample: Metric.Config.WithOwin( m => app.Use(m))
/// Where app is the IAppBuilder
/// </summary>
/// <param name="config">Chainable configuration object.</param>
/// <param name="middlewareRegistration">Action used to register middleware. This should generally be app.Use(middleware)</param>
/// <param name="owinConfig">Action used to configure Owin metrics.</param>
/// <returns>Chainable configuration object.</returns>
public static MetricsConfig WithOwin(this MetricsConfig config, Action <object> middlewareRegistration, Action <OwinMetricsConfig> owinConfig)
{
var owin = config.WithConfigExtension((ctx, hs) => new OwinMetricsConfig(middlewareRegistration, ctx, hs));
owinConfig(owin);
return(config);
}
public static MetricsConfig WithHapper(this MetricsConfig metricsConfig, IPipelines pipelines, Action <HapperMetricsConfig> configHapper)
{
var happerConfig = metricsConfig
.WithConfigExtension(
(ctx, hs) => new HapperMetricsConfig(ctx, hs, pipelines),
() => HapperMetricsConfig.Disabled);
configHapper(happerConfig);
return(metricsConfig);
}
public static MetricsConfig WithWebServerCounters(this MetricsConfig config)
{
Require.NotNull(config, nameof(config));
config.WithConfigExtension((context, hs) =>
{
context.Advanced.Gauge("websrv_conn_attempts_rate", () => new WebServicePerfCounterValueProvider(WebServicePerfCounters.CONNECTION_ATTEMPTS_PER_SECOND), Unit.Custom("connections/s"));
context.Advanced.Gauge("websrv_current_conn_cnt", () => new WebServicePerfCounterValueProvider(WebServicePerfCounters.CURRENT_CONNECTIONS), Unit.Custom("connections"));
});
return(config);
}
public static MetricsConfig WithSystemCounters(this MetricsConfig config)
{
Require.NotNull(config, nameof(config));
config.WithConfigExtension((context, hs) =>
{
context.Advanced.Gauge("cpu", () => new PerfCounterValueProvider("Processor", "% Processor Time", "_Total"), Unit.Percent);
context.Advanced.Gauge("memory", () => new MemoryLoadValueProvider(), Unit.Percent);
});
return(config);
}
public static MetricsConfig WithAspNetCounters(this MetricsConfig config)
{
Require.NotNull(config, nameof(config));
config.WithConfigExtension((context, hs) =>
{
context.Advanced.Gauge("aspnet_req_rate", () => new AspNetAppPerfCounterValueProvider(AspNetAppPerfCounters.REQUESTS_PER_SECOND), Unit.Custom("requests/s"));
context.Advanced.Gauge("aspnet_req_exec_time", () => new AspNetPerfCounterValueProvider(AspNetPerfCounters.REQUEST_EXECUTION_TIME), Unit.Custom("ms"));
context.Advanced.Gauge("aspnet_req_wait_time", () => new AspNetPerfCounterValueProvider(AspNetPerfCounters.REQUEST_WAIT_TIME), Unit.Custom("ms"));
context.Advanced.Gauge("aspnet_current_req_cnt", () => new AspNetPerfCounterValueProvider(AspNetPerfCounters.REQUESTS_CURRENT), Unit.Requests);
context.Advanced.Gauge("aspnet_disc_req_cnt", () => new AspNetPerfCounterValueProvider(AspNetPerfCounters.REQUESTS_DISCONNECTED), Unit.Requests);
context.Advanced.Gauge("aspnet_queued_req_cnt", () => new AspNetPerfCounterValueProvider(AspNetPerfCounters.REQUESTS_QUEUED), Unit.Requests);
context.Advanced.Gauge("aspnet_rejected_req_cnt", () => new AspNetPerfCounterValueProvider(AspNetPerfCounters.REQUESTS_REJECTED), Unit.Requests);
});
return(config);
}
public static IApplicationBuilder UseMetrics(this IApplicationBuilder app, MetricsConfig config, Clock clock)
{
if (app == null)
{
throw new ArgumentNullException(nameof(app));
}
// Verify if AddMetrics was done before calling UseMetrics
// We use the MetricsMarkerService to make sure if all the services were added.
MetricsServicesHelper.ThrowIfMetricsNotRegistered(app.ApplicationServices);
var options = app.ApplicationServices.GetService <IOptions <MetricsOptions> >().Value;
config.WithConfigExtension((ctx, hs) =>
{
var metricsContext = new AspNetMetricsContext(ctx, hs, clock);
// Metrics Endpoint Middleware
app.Use(next => new MetricsEndpointMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new PingEndpointEndpointMiddleware(next, options).Invoke);
app.Use(next => new HealthEndpointEndpointMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new MetricsEndpointTextEndpointMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new MetricsEndpointVisualizationEndpointMiddleware(next, options).Invoke);
// Web Metrics Middleware
app.Use(next => new ErrorRequestMeterMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new OAuth2ClientWebRequestMeterMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new PerRequestTimerMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new RequestTimerMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new ActiveRequestCounterEndpointMiddleware(next, options, metricsContext).Invoke);
app.Use(next => new PostAndPutRequestSizeHistogramMiddleware(next, options, metricsContext).Invoke);
});
UseHealthChecks(app);
return(app);
}