.NET 6 Minimal Web API with Endpoint Logging

minimal-web-api-with-endpoint-logging.md

.NET 6 Minimal Web API with Endpoint Logging

with your project set to C# 10 (add <LangVersion>preview</LangVersion> to your .csproj file), in your Program.cs simply add ILogger<Program> logger to your endpoint delegate:

using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;

namespace MinimalWebApiWithLogging
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var builder = WebApplication.CreateBuilder(args);
            var app = builder.Build();

            app.MapGet("/hello/{name}", (ILogger<Program> logger, string name) =>
            {
                logger.LogInformation("say hello to {name} ...", name);
                return Results.Text($"hello {name}");
            });

            app.Logger.LogInformation("starting the app ...");
            app.Run();
        }
    }
}

... yes, C# 10 allows you to remove all boiler plate code, so only lines 18 - 28 will remain ;-)

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