08.04.2022 akış

Program.cs içinde App'imize serilog ekliyoruz.
Aşağıdaki kütüphaneleri nuget üzerinden yüklüyoruz

Serilog.AspNetCore

Serilog.Exceptions

Serilog.Extensions.Logging

Serilog.Sinks.Console

Serilog.Sinks.RollingFile

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public static int Main(string[] args) { //Loglamayı başlatıyoruz ILogger logger = new LoggerConfiguration() .MinimumLevel.Information() .MinimumLevel.Override("Microsoft", LogEventLevel.Warning) .MinimumLevel.Override("Microsoft.AspNetCore.Mvc", LogEventLevel.Error) .MinimumLevel.Override("Microsoft", LogEventLevel.Information) //.Enrich.FromLogContext() .Enrich.WithExceptionDetails() //.WriteTo.Console() .WriteTo.File(path:@"Logs/AppStatus.txt", rollingInterval: RollingInterval.Hour, formatter: new JsonFormatter(renderMessage: true)) .CreateLogger(); try { logger.Information("Starting CrmApp"); CreateHostBuilder(args).Build().Run(); return 0; } catch (Exception ex) { logger.Fatal(ex, "App terminated unexpectedly"); return 1; } finally { Log.CloseAndFlush(); } }

Register edeceğimiz host servis kısmını loglamak için aşağıdaki yapıya serilog ekliyoruz

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public static IHostBuilder CreateHostBuilder(string[] args) => Host.CreateDefaultBuilder(args) .ConfigureAppConfiguration((app, config) => { config.AddJsonFile("appsettings.json"); config.AddJsonFile($"appsettings.{Env}.json"); }) .ConfigureWebHostDefaults(webBuilder => { webBuilder.ConfigureKestrel(options => options.AddServerHeader = false); webBuilder.UseStartup<Startup>(); }) .UseSerilog((hostContext, configuration) => { configuration.ReadFrom.Configuration(hostContext.Configuration) .MinimumLevel.Information() .Enrich.WithExceptionDetails() .WriteTo.File(path: @"Logs/AppListener.txt", rollingInterval: RollingInterval.Hour, formatter: new JsonFormatter(renderMessage: true)); });

 Middleware oluşturuyoruz.

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public static class ApplicationBuilderExtensions { public static BackgroundLeadCheckTask Listener { get; set; } public static IApplicationBuilder UseEventListener(this IApplicationBuilder app) { var life = app.ApplicationServices.GetService<IHostApplicationLifetime>(); Listener = new BackgroundLeadCheckTask(app.ApplicationServices.GetService<ICustomerApiClient>(), app.ApplicationServices.GetService<ILogger>()); life.ApplicationStarted.Register(OnStarted); life.ApplicationStopping.Register(OnStopping); return app; } private static void OnStarted() { Listener.Start(TimeSpan.FromSeconds(10)); } private static void OnStopping() { Task.Run(async () => { await Listener.StopAsync(); }); }

  Background taskımızı yazarken dotnet 6.0 yeni zamanlama apilerinden periodic timer kullanıyoruz.

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public class BackgroundLeadCheckTask { private Task _timerTask; private readonly CancellationTokenSource _cts = new(); private readonly ICustomerApiClient _customerApiClient; private readonly ILogger _logger; public BackgroundLeadCheckTask(ICustomerApiClient customerApiClient, ILogger logger) { _customerApiClient = customerApiClient; _logger = logger; } public void Start(TimeSpan timespan) { async Task DoStart() { try { var timer = new PeriodicTimer(timespan); while (await timer.WaitForNextTickAsync(_cts.Token)) { _logger.Information($"{DateTime.Now}"); } } catch (OperationCanceledException ex) { _logger.Error($"{ex.Message}"); _cts.Cancel(); } } _timerTask = DoStart(); FirstInit(); } public Task FirstInit() { _logger.Information($"ilk kod çağırıldı ve cache alınacak {DateTime.Now}"); return Task.CompletedTask; } public async Task StopAsync() { _cts.Cancel(); await _timerTask; _cts.Dispose(); _logger.Information($"BackgroundTask cancelled {DateTime.Now}"); } }

 Startup.cs içinde oluşturduğumuz middleware'i Configure metodu içine register ediyoruz

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public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseEventListener(); }