WebAppSample.md

Autometrics Web Application Sample

The Autometrics.Samples.WebApp sample demonstrates how to use the Autometrics framework to instrument a .NET Web Application. The instrumentation of methods remains the same as in the other examples; the only difference lies in the configuration of the metrics exporter.

Instrumenting Methods

Autometrics makes it easy to instrument your methods with the Autometrics attribute. Just add the attribute to any method you want to instrument. Here is an example:

[Autometrics]
public IActionResult Index()
{
    // Your code here
    return View();
}

Configuring the Exporter

To configure the exporter for a web application, you'll need to modify the Startup.cs or Program.cs file. Below is an example of how to do this using the OpenTelemetry exporter:

using OpenTelemetry;
using OpenTelemetry.Metrics;
using OpenTelemetry.Trace;

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddRazorPages();

// Add OpenTelemetry services, and configure the metrics exporter for Autometrics.Instrumentation
builder.Services.AddOpenTelemetry()
    .WithMetrics(builder =>
    {
        // Additional configuration or other exporters can be added here
        builder.AddOtlpExporter();
        builder.AddMeter("Autometrics.Instrumentation");
    });


var app = builder.Build();
if (!app.Environment.IsDevelopment())
{
    app.UseExceptionHandler("/Error");
    app.UseHsts();
}

app.UseHttpsRedirection();
app.UseStaticFiles();
app.UseRouting();
app.UseAuthorization();
app.MapRazorPages();
app.MapControllers();
app.Run();