如何使用 AppSettings 设置 NLog 与 Topshelf 进行配置

问题描述

我正在使用 TopShelf 来促进构建 Windows 服务，同时还尝试正确配置 Nlog。

这是我的 Program 类，它用作我的应用程序的入口点：

class Program
{
    static void Main(string[] args)
    {
         var services = ConfigureServices();

        var serviceProvider = services.BuildServiceProvider();    

        var rc = HostFactory.Run(x =>
        {
            x.UseNLog();
            x.Service<Service>(s =>
            {
                s.ConstructUsing(() => serviceProvider.GetService<Service>());
                s.WhenStarted(cnc => cnc.Start());
                s.WhenStopped(cnc => cnc.Stop());
            });
            x.RunAsLocalSystem();
            x.SetDescription("Sample Topshelf Host");
            x.SetdisplayName("Stuff");
            x.SetServiceName("Stuff");               
        });

        var exitCode = (int)Convert.ChangeType(rc,rc.GetTypeCode());
        Environment.ExitCode = exitCode;

    }

    private static IServiceCollection ConfigureServices()
    {
        IServiceCollection services = new ServiceCollection();

        var config = LoadConfiguration();

        //Get the NLog configuration from AppSettings
        LogManager.Configuration = new NLogLoggingConfiguration(config.GetSection("NLog"));
        Logger nloglogger = LogManager.GetCurrentClassLogger();

        //registered services here
        services.AddTransient<IInjected,Injected>();
        return services;
    }

    public static IConfiguration LoadConfiguration()
    {
        var builder = new ConfigurationBuilder()
            .SetBasePath(Directory.GetCurrentDirectory())
            .AddJsonFile("appsettings.json",optional: true,reloadOnChange: true);            

        return builder.Build();
    }

}

这是 TopShelf 正在启动的类

public class Service
{
    private readonly IInjected _injected;
    private Timer _timer;

    public Service(IInjected injected)
    {
        _injected = injected
    }

    public void Start()
    {
        _timer = new Timer(1200);
        _timer.Elapsed += new ElapsedEventHandler(Onelapsedtime);           
        _timer.AutoReset = false;
        _timer.Enabled = true;
        _timer.Start();          
    }

    public void Stop()
    {
        Console.WriteLine("Service stopped");
        _timer.AutoReset = false;
        _timer.Enabled = false;
    }

    private void Onelapsedtime(object sender,ElapsedEventArgs e)
    {
        try
        {
           _injected.Process();
        }
        catch (Exception ex)
        {
            throw;
        }
        finally
        {
            _timer.Start();
        }

    }    
}

最后，应用设置

"NLog": {
  "internalLogLevel": "Debug","internalLogFile": "c:\\temp\\internal-nlog.txt","extensions": {
    "NLog.Extenstions.Logging": {
      "assembly": "Nlog.Extensions.Logging"
    }
  },"targets": {
    "logconsole": {
      "type": "Console","layout": "${longdate}|${level}|${message} |${all-event-properties} ${exception:format=tostring}"
    },"allfile": {
      "type": "File","fileName": "c:\\temp\\nlog-all-${shortdate}.log","layout": "${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}"
    }
  },"rules": [
    {
      "logger": "*","minLevel": "Debug","writeto": "logconsole"
    },{
      "logger": "*","minLevel": "Trace","writeto": "allfile"
    }
  ]
}

我注入的类有一个记录器的属性，并且按照 NLog 和我阅读过的文档中的说明进行注入。

private readonly ILogger<ClassName> _logger;

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

    public async Task Process()
    {
        _logger.LogDebug("Process started");
        //stuff being done here
    }

但我似乎无法将结果记录到控制台或文件中。

我确保我的 AppSettings 设置为始终复制。

让我印象深刻的一件事是，在将内部 NLog 记录器设置为调试后，我注意到了这个条目，但它的本质有点超出我的理解，而且我似乎无法在网上找到类似的问题：

021-02-17 12:20:18.4969 未为记录器配置调试目标： Topshelf.HostFactory 2021-02-17 12:20:18.4969 调试目标不 为记录器配置：Topshelf.HostConfigurators.HostConfiguratorImpl 2021-02-17 12:20:18.4969 未为记录器配置调试目标： Topshelf.Runtime.Windows.WindowsHostEnvironment 2021-02-17 12:20:18.6532 未为记录器配置调试目标： Topshelf.Builders.RunBuilder 2021-02-17 12:20:18.6532 调试目标 未为记录器配置：Topshelf.Hosts.ConsoleRunHost

否则，NLog 文件中没有其他明显的问题将我指向该问题。这里有什么问题？

解决方法

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