I'm trying to use serligo as my main logging utilitie but I can't seem to get it to work correctly.

In the Program.cs file, I configure the logger and also log a startup message, this message gets outputted to the console.

I also have, in one of my controllers, an ILogger<HomeController> instance that logs information when a certain action is called. These logs are not outputted to the console, and I cannot understand why.

Startup.cs

public class Program
{
    public static void Main(string[] args)
    {
        Log.Logger = new LoggerConfiguration()
            .WriteTo.Console()
            .CreateLogger();

        try
        {
            Log.Information("Starting up version {version}", Defaults.Version); // WORKS
            CreateHostBuilder(args).Build().Run();
        }
        catch (Exception ex)
        {
            Log.Fatal(ex, "Application start-up failed");
        }
        finally
        {
            Log.CloseAndFlush();
        }

    }

    public static IHostBuilder CreateHostBuilder(string[] args) =>
        Host.CreateDefaultBuilder(args)
            .UseSerilog((hostingContext, loggerConfiguration) => loggerConfiguration.ReadFrom.Configuration(hostingContext.Configuration))
            .ConfigureWebHostDefaults(webBuilder =>
            {
                webBuilder.UseStartup<Startup>();
            });
}

Controller

public class HomeController : Controller
{

    private readonly ILogger<HomeController> _logger;

    public HomeController(ILogger<HomeController> logger)
    {
        _logger = logger;
    }

    public IActionResult Index()
    {
        _logger.LogInformation("Home/Index"); //Does not work
        return View();
    }
 
}

appsettings.json

"Serilog": {
    "Using": [ "Serilog.Sinks.Console" ],
    "MinimumLevel": {
      "Default": "Verbose",
      "Override": {
        "Microsoft": "Warning",
        "Microsoft.AspNetCore": "Warning",
        "System": "Error"
      }
    },
    "WriteTo": [
      {
        "Name": "Async",
        "Args": {
          "configure": [
            {
              "Name": "Console",
              "Args": {
                "theme": "Serilog.Sinks.SystemConsole.Themes.AnsiConsoleTheme::Code, Serilog.Sinks.Console",
                "formatter": "Serilog.Formatting.Compact.RenderedCompactJsonFormatter, Serilog.Formatting.Compact"
              }
            }
          ]
        }
      }
    ]
  },

CodePudding user response：

.UseSerilog((hostingContext, loggerConfiguration) => loggerConfiguration.ReadFrom.Configuration(hostingContext.Configuration))

The issue relates the above code, in this part of code, you should also configure it to write to the console.

Modify the code as below:

.UseSerilog((hostingContext, loggerConfiguration) => loggerConfiguration.ReadFrom.Configuration(hostingContext.Configuration).WriteTo.Console())

Then, the output like this: