prometheus-net-contrib

A plugin for the prometheus-net package, exposing event counters and diagnostic listeners for .NET Core Runtime, ASP.NET Core, SignalR, GRPC, etc.

Installation

Supports .NET core v3.0+ only.

Add the package from nuget:

dotnet add package prometheus-net.Contrib

And then start the collectors:

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        ...
        services.AddPrometheusCounters();
        services.AddPrometheusAspNetCoreMetrics();
        services.AddPrometheusHttpClientMetrics();
        services.AddPrometheusSqlClientMetrics();
    }
}

.NET Core 3.0 Event Counters

Runtime

ASP .NET Core

ASP .NET Core SignalR

ASP .NET Core GRPC Server

ASP .NET Core GRPC Client

.NET Core Diagnostic Listeners

ASP .NET Core

HTTP Client

SQL Client

SQL Client (Microsoft.Data.SqlClient 3.x)

GRPC Client

Identity Server

dotnet add package prometheus-net.IdentityServer

And then start the collectors:

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        services.AddIdentityServer(options =>
        {
            options.Events.RaiseErrorEvents = true;
            options.Events.RaiseFailureEvents = true;
            options.Events.RaiseInformationEvents = true;
            options.Events.RaiseSuccessEvents = true;
        });

        services.AddPrometheusIdentityServerMetrics();
    }
}

Prometheus healthchecks

It is possible to publish all healthchecks results to a prometheus

public virtual void ConfigureServices(IServiceCollection services)
{
    services.AddHealthChecks()
        .AddSqlServer("<Connection String>", name: "sqlserver")

    services.AddSingleton<IHealthCheckPublisher, PrometheusHealthcheckPublisher>();

    return services;
}