NLog 5 忽略 Logging.LogLevel.Default 選項

Question

我正在嘗試使用以下 appsettings.json 為.NET 6 控制台應用程序配置 NLog：

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning"
    }
  },
  "NLog": {
    "targets": {
      "console": {
        "type": "Console",
        "layout": "${longdate} ${pad:padding=5:inner=${uppercase:${level}}} ${message}${onexception:inner=${newline}${exception:format=ToString}}"
      }
    },
    "rules": [
      {
        "logger": "*",
        "writeTo": "console",
        "minLevel": "Trace"
      }
    ]
  }
}

Host.CreateDefaultBuilder(args)
    .ConfigureLogging((context, logging) =>
    {
        var configuration = context.Configuration.GetSection("NLog");
        if (!configuration.Exists())
            return;

        LogManager.Configuration = new NLogLoggingConfiguration(configuration);
        logging.ClearProviders();
        logging.AddNLog();
    })
    .ConfigureServices(services =>
    {
        services.AddHostedService<MyHostedService>();
    })
    .Build()
    .Run();

MyHostedService的以下代碼按預期與NLog.Extensions.Logging 1.7.5一起工作 - 只有Information級別和更高級別的消息才會顯示在控制台中。

private readonly ILogger<MyHostedService> _logger;

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

public Task StartAsync(CancellationToken cancellationToken)
{
    _logger.LogTrace("Test");
    _logger.LogDebug("Test");
    _logger.LogInformation("Test");
    _logger.LogWarning("Test");
    _logger.LogError("Test");
    _logger.LogCritical("Test");
    return Task.CompletedTask;
}

但如果安裝了5.2.0 ，則它會輸出所有消息。 我究竟做錯了什么？ NLog.Extensions.Logging 5.2.0 package 是否需要額外的設置來考慮Logging.LogLevel.Default配置選項值？

Answer 1

NLog v5 包括幾個重大更改，其中一個是NLog.Extensions.Logging 沒有任何過濾器

你可以這樣做：

  "NLog": {
    "targets": {
      "console": {
        "type": "Console",
        "layout": "${longdate} ${pad:padding=5:inner=${uppercase:${level}}} ${message}${onexception:inner=${newline}${exception:format=ToString}}"
      }
    },
    "rules": [
      {
        "logger": "*",
        "finalMinLevel": "Info"
      },
      {
        "logger": "Microsoft*",
        "finalMinLevel": "Warn"
      },
      {
        "logger": "*",
        "writeTo": "console",
        "minLevel": "Trace"
      }
    ]
  }

或者你可以這樣做：

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning"
    },
    "NLog": {
      "RemoveLoggerFactoryFilter": false
    }
  },
  "NLog": {
    "targets": {
      "console": {
        "type": "Console"
      }
    },
    "rules": [
      {
        "logger": "*",
        "writeTo": "console",
        "minLevel": "Trace"
      }
    ]
  }
}

另見： https://github.com/NLog/NLog.Extensions.Logging/wiki/NLog-configuration-with-appsettings.json