using Serilog;

using System.Threading.Tasks;

using Serilog.Context;

​

class Program

{

    const string outputTemplate =

    "{Message:lj} {Properties:j}{NewLine}";

    private static ILogger _logger = new LoggerConfiguration()

                .MinimumLevel.Information()

                .Enrich.FromLogContext()

                .Enrich.WithThreadId()

                .WriteTo.Console(outputTemplate: outputTemplate)

                .CreateLogger();

​

    public static void Main(string[] args) {

        _logger.Information("Начало");

        async Task Handler1() {

            using (LogContext.PushProperty("Имя", "Вася")) 

            {

                using (LogContext.PushProperty("Имя", "Женя")) {

                    using (LogContext.PushProperty("Фамилия", "Пупкин")) 

                    {

                        await Task.Delay(500);

                        _logger.Information("Я покушал." + System.DateTime.Now.ToString());

                        await Task.Delay(500);

                    }

                }

            }

        }

        async Task Handler2() {

            using (LogContext.PushProperty("Имя", "Петя")) 

            {

                await Task.Delay(500);

                _logger.Information("Я поспал." + System.DateTime.Now.ToString());

                await Task.Delay(500);

            }

        }

        var task1 = Handler1();

        var task2 = Handler2();

        Task.WaitAll(task1, task2);

        _logger.Information("Конец");

    }

}