Simple File Logger

A very simple file logging framework based on the Microsoft.Extensions.Logging.Abstractions NuGet package. While developing .NET Core 2.x apps for Windows IoT Core we ran into runtime issues using the file loggers provided by NLog and Serilog. Unfortunately we were forced to write our own file logger. The SimpleFileLogger writes log entries to a file which allows you to specify a MaxFileSizeBytes and MaxArchiveFileCount to manage log file size, log history, disk space consumption, etc.

Logger Options

Name	Description	Default
RootFolder	Log file folder name.	Entry assembly folder.
Filename	Filename of the log file.	app-log.log
MaxFileSizeBytes	The maximum file size in bytes before the log file is archived.	0 - no archiving will occur.
MaxArchiveFileCount	The number of archive files to retain.	5
Filter	Callback to validate if the logger is enabled for the specfied log level.	logLevel => logLevel != LogLevel.None

Sample Code

Console Application (DI)

using Hyprsoft.Logging.Core;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using System;

class Program
{
    static void Main(string[] args)
    {
        var services = new ServiceCollection();
        var serviceProvider = services.AddLogging(builder =>
        {
            builder.AddSimpleFileLogger();
            builder.AddConsole();
        })
        .AddSingleton<FakeService>()
        .BuildServiceProvider();

        var service = serviceProvider.GetService<FakeService>();
        service.DoSomething();

        Console.ReadKey();
    }
}

Console Application

using Hyprsoft.Logging.Core;
using Microsoft.Extensions.Logging;
using System;

class Program
{
    static void Main(string[] args)
    {
        var factory = new LoggerFactory();
        factory.AddSimpleFileLogger();
        factory.AddConsole();

        var logger = factory.CreateLogger<Program>();
        logger.LogInformation("Hello World!");

        Console.ReadKey();
    }
}

ASP.NET Core MVC Web App

using Microsoft.AspNetCore.Hosting;
using Hyprsoft.Logging.Core;
using Microsoft.Extensions.Logging;

public class Program
{
    public static void Main(string[] args)
    {
        CreateWebHostBuilder(args).Build().Run();
    }

    public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .ConfigureLogging(builder =>
            {
                builder.AddSimpleFileLogger();
                builder.AddFilter<SimpleFileLoggerProvider>("Microsoft", LogLevel.None);
            })
            .UseStartup<Startup>();
}

Sample Output

INFO: Hyprsoft.Logging.TestWeb.FakeService @ 2/20/2019 5:40:54 PM
	Hello World!