Я работаю над настройкой ведения журнала в нашем приложении ASP. NET Core 3, используя ILogger (Microsoft.Extensions.Logging) с NLog, чтобы разрешить запись в текстовые файлы.
проблема в том, что ILogger не пишет сообщения уровня TRACE и DEBUG. Либо в текстовый файл, либо в окно вывода Visual Studio. Использование NLog.Logger работает со всеми уровнями. Эта проблема также существует в приложении по умолчанию ASP. NET Core 3 Web API с NLog, настроенным из их официального руководства. Ниже приведен соответствующий код, который у меня есть.
Program.cs
public static void Main(string[] args)
{
var logger = NLog.Web.NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger();
try
{
logger.Trace("NLog Trace from Main()");
logger.Debug("NLog Debug from Main()");
logger.Info("NLog Info from Main()");
logger.Warn("NLog Warn from Main()");
logger.Error("NLog Error from Main()");
logger.Fatal("NLog Fatal from Main()");
CreateHostBuilder(args).Build().Run();
}
catch (Exception exception)
{
//NLog: catch setup errors
logger.Error(exception, "Stopped program because of exception");
throw;
}
finally
{
// Ensure to flush and stop internal timers/threads before application-exit (Avoid segmentation fault on Linux)
NLog.LogManager.Shutdown();
}
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
})
.ConfigureLogging(options =>
{
options.SetMinimumLevel(Microsoft.Extensions.Logging.LogLevel.Trace);
}).UseNLog();
nlog.config
<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
autoReload="true"
internalLogLevel="Info"
internalLogFile="c:\temp\internal-nlog.txt">
<!-- enable asp.net core layout renderers -->
<extensions>
<add assembly="NLog.Web.AspNetCore"/>
</extensions>
<!-- the targets to write to -->
<targets>
<!-- write logs to file -->
<target xsi:type="File" name="allfile" fileName="c:\temp\nlog-all-${shortdate}.log"
layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}" />
<!-- another file log, only own logs. Uses some ASP.NET core renderers -->
<target xsi:type="File" name="ownFile-web" fileName="c:\temp\nlog-own-${shortdate}.log"
layout="${longdate}|${event-properties:item=EventId_Id}|${uppercase:${level}}|${logger}|${message} ${exception:format=tostring}|url: ${aspnet-request-url}|action: ${aspnet-mvc-action}" />
</targets>
<!-- rules to map from logger name to target -->
<rules>
<!--All logs, including from Microsoft-->
<logger name="*" minlevel="Trace" writeTo="allfile" />
<!--Skip non-critical Microsoft logs and so log only own logs-->
<logger name="Microsoft.*" maxlevel="Info" final="true" /> <!-- BlackHole without writeTo -->
<logger name="*" minlevel="Trace" writeTo="ownFile-web" />
</rules>
</nlog>
настройки приложения. json
{
"Logging": {
"LogLevel": {
"Default": "Trace",
"Microsoft": "Warning",
"Microsoft.Hosting.Lifetime": "Information"
}
},
"AllowedHosts": "*"
}
WeatherForecastController.cs
private readonly ILogger<WeatherForecastController> _logger;
public WeatherForecastController(ILogger<WeatherForecastController> logger)
{
_logger = logger;
}
[HttpGet]
public IEnumerable<WeatherForecast> Get()
{
_logger.LogTrace("ILogger LogTrace from WeatherForecastController.");
_logger.LogDebug("ILogger LogDebug from WeatherForecastController.");
_logger.LogInformation("ILogger LogInformation from WeatherForecastController.");
_logger.LogWarning("ILogger LogWarning from WeatherForecastController.");
_logger.LogError("ILogger LogError from WeatherForecastController.");
_logger.LogCritical("ILogger LogCritical from WeatherForecastController.");
var rng = new Random();
return Enumerable.Range(1, 5).Select(index => new WeatherForecast
{
Date = DateTime.Now.AddDays(index),
TemperatureC = rng.Next(-20, 55),
Summary = Summaries[rng.Next(Summaries.Length)]
})
.ToArray();
}
Вывод в файл журнала
2020-05-26 09:48:41.2752||TRACE|NLogTest.Program|NLog Trace from Main() |url: |action:
2020-05-26 09:48:41.3081||DEBUG|NLogTest.Program|NLog Debug from Main() |url: |action:
2020-05-26 09:48:41.3081||INFO|NLogTest.Program|NLog Info from Main() |url: |action:
2020-05-26 09:48:41.3081||WARN|NLogTest.Program|NLog Warn from Main() |url: |action:
2020-05-26 09:48:41.3081||ERROR|NLogTest.Program|NLog Error from Main() |url: |action:
2020-05-26 09:48:41.3081||FATAL|NLogTest.Program|NLog Fatal from Main() |url: |action:
2020-05-26 09:48:41.9009||INFO|NLogTest.Controllers.WeatherForecastController|ILogger LogInformation from WeatherForecastController. |url: https://localhost/weatherforecast|action: Get
2020-05-26 09:48:41.9162||WARN|NLogTest.Controllers.WeatherForecastController|ILogger LogWarning from WeatherForecastController. |url: https://localhost/weatherforecast|action: Get
2020-05-26 09:48:41.9162||ERROR|NLogTest.Controllers.WeatherForecastController|ILogger LogError from WeatherForecastController. |url: https://localhost/weatherforecast|action: Get
2020-05-26 09:48:41.9219||FATAL|NLogTest.Controllers.WeatherForecastController|ILogger LogCritical from WeatherForecastController. |url: https://localhost/weatherforecast|action: Get
Теперь кто-нибудь может сказать мне, почему ILogger не пишет сообщения TRACE и DEBUG? Я гуглил это несколько часов, и, насколько я могу судить, все должно быть настроено правильно (?).
Спасибо!