Grupowanie wiadomości w nLogu w ramach żądania HTTP

HomeController.cs

public class HomeController : Controller
{
    private static ILogger _logger = NLog.LogManager.GetCurrentClassLogger();

    public ActionResult Index()
    {
        _logger.Info("Home.Index started.");

        Random random = new Random();
        var value = random.Next(1, 3);
        _logger.Info($"Home.Index value is equal {value}");

        if (value == 1)
        {
            _logger.Error("Error during processing value");
            throw new Exception("Error during processing value");
        }

        _logger.Info("Home.Index ended.");
        return View();
    }
}

log1.txt

2019-01-25 06:15:23.7035 INFO Home.Index started.
2019-01-25 06:15:23.7074 INFO Home.Index value is equal 2
2019-01-25 06:15:23.7074 INFO Home.Index ended.
2019-01-25 06:15:23.7035 INFO Home.Index started.
2019-01-25 06:15:23.7035 INFO Home.Index started.
2019-01-25 06:15:23.7074 INFO Home.Index value is equal 2
2019-01-25 06:15:23.7035 INFO Home.Index started.
2019-01-25 06:15:23.7035 INFO Home.Index started.
2019-01-25 06:15:23.7074 INFO Home.Index value is equal 2
2019-01-25 06:15:23.7204 INFO Home.Index ended.
2019-01-25 06:15:23.7074 INFO Home.Index ended.
2019-01-25 06:15:23.7204 INFO Home.Index value is equal 1
2019-01-25 06:15:23.7204 ERROR Error during processing value
2019-01-25 06:15:23.7074 INFO Home.Index value is equal 2
2019-01-25 06:15:23.7384 INFO Home.Index ended.

log2.txt

2019-01-25 06:15:23.7035 INFO dc6f3750-87a3-41e5-ac56-d9f3453c6581 Home.Index started.
2019-01-25 06:15:23.7074 INFO dc6f3750-87a3-41e5-ac56-d9f3453c6581 Home.Index value is equal 2
2019-01-25 06:15:23.7074 INFO dc6f3750-87a3-41e5-ac56-d9f3453c6581 Home.Index ended.
2019-01-25 06:15:23.7035 INFO 8415583f-c228-4e2e-b5b7-54a568e18f9e Home.Index started.
2019-01-25 06:15:23.7035 INFO 04eaaa85-d320-4e52-9788-0d1aeeab7072 Home.Index started.
2019-01-25 06:15:23.7074 INFO 04eaaa85-d320-4e52-9788-0d1aeeab7072 Home.Index value is equal 2
2019-01-25 06:15:23.7035 INFO 52434052-da54-4b34-a800-8c1dc73ccdf4 Home.Index started.
2019-01-25 06:15:23.7035 INFO 5ffff241-29db-4101-a4df-c3cb4e74dd73 Home.Index started.
2019-01-25 06:15:23.7074 INFO 8415583f-c228-4e2e-b5b7-54a568e18f9e Home.Index value is equal 2
2019-01-25 06:15:23.7204 INFO 8415583f-c228-4e2e-b5b7-54a568e18f9e Home.Index ended.
2019-01-25 06:15:23.7074 INFO 04eaaa85-d320-4e52-9788-0d1aeeab7072 Home.Index ended.
2019-01-25 06:15:23.7204 INFO 5ffff241-29db-4101-a4df-c3cb4e74dd73 Home.Index value is equal 1
2019-01-25 06:15:23.7204 ERROR 5ffff241-29db-4101-a4df-c3cb4e74dd73 Error during processing value
2019-01-25 06:15:23.7074 INFO 52434052-da54-4b34-a800-8c1dc73ccdf4 Home.Index value is equal 2
2019-01-25 06:15:23.7384 INFO 52434052-da54-4b34-a800-8c1dc73ccdf4 Home.Index ended.

MvcApplication.cs

public class MvcApplication : System.Web.HttpApplication
{
    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }

    protected void Application_BeginRequest(object sender, EventArgs e)
    {
        Trace.CorrelationManager.ActivityId = Guid.NewGuid();
    }
}

NLog.config

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://www.nlog-project.org/schemas/NLog.xsd NLog.xsd"
      autoReload="true"
      throwExceptions="false"
      internalLogLevel="Off" internalLogFile="c:\temp\nlog-internal.log">
  <targets>
    <target xsi:type="File" name="f" fileName="${basedir}/App_Data/logs/${shortdate}.log"
            layout="${longdate} ${uppercase:${level}} ${activityid} ${message}" />
  </targets>

  <rules>
    <logger name="*" minlevel="Debug" writeTo="f" />
  </rules>
</nlog>

Program.cs

class Program
{
    static void Main(string[] args)
    {
        int instances = 5;
        var tasks = new Task[instances];
        for (int i = 0; i < instances; i++)
        {
            tasks[i] = Test();
        }

        Task.WaitAll(tasks);
    }

    static Task Test()
    {
        var webClient = new WebClient();

        return webClient.DownloadStringTaskAsync("http://localhost:55405/");
    }
}