c# - 在 Azure Function 中处置 NLog

Question

我想在 Azure Functions Startup 类中添加 NLog，如下所示:

public class Startup : FunctionsStartup {
    public Startup()
    {        
        var logger = NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger();
    }
    public override void Configure(IFunctionsHostBuilder builder) {
        ... other setup code
        builder.Services.AddLogging((loggingBuilder) =>
        {
            loggingBuilder.AddNLog();
        });
    }
}

根据 Nlog，您应该使用 NLog.LogManager.Shutdown() 手动关闭记录器。如何在Azure Function中处置NLog？

Answer 1

如果我正确理解你的问题，你想在 Azure Function 实例被处置时关闭 NLog。在这种情况下，您可以执行如下操作:

public class Startup : FunctionsStartup {
    public Startup()
    {
        var logger = LogManager.Setup()
           .SetupExtensions(e => e.AutoLoadAssemblies(false))
           .LoadConfigurationFromFile("nlog.config", optional: false)
           .LoadConfiguration(builder => builder.LogFactory.AutoShutdown = false)
           .GetCurrentClassLogger();
    }

    public override void Configure(IFunctionsHostBuilder builder) {
        // other setup code
        builder.Services.AddLogging((loggingBuilder) =>
        {
            loggingBuilder.AddNLog(new NLogProviderOptions() { ShutdownOnDispose = true });
        });
    }
}

现在，NLog 将 Hook Microsoft 扩展日志记录的生命周期(禁用 AutoShutdown 并启用 ShutdownOnDispose)