如何从Serilog请求日志记录中排除健康检查终结点

public class Startup
{
    public void ConfigureServices(IServiceCollection services)
    {
        // ..other service configuration

        services.AddHealthChecks(); // Add health check services
    }

    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
        {
            // .. other middleware
            app.UseRouting();
            app.UseAuthorization();
            app.UseEndpoints(endpoints =>
            {
                endpoints.MapHealthChecks("/health"); //Add health check endpoint
                endpoints.MapControllers();
            });
        }
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    // ... Other middleware

    app.UseSerilogRequestLogging(opts
        // EnrichFromRequest helper function is shown in the previous post
        => opts.EnrichDiagnosticContext = LogHelper.EnrichFromRequest); 

    app.UseRouting();
    app.UseAuthorization();
    app.UseEndpoints(endpoints =>
    {
        endpoints.MapHealthChecks("/healthz"); //Add health check endpoint
        endpoints.MapControllers();
    });
}

public static class SerilogApplicationBuilderExtensions
{
    static LogEventLevel DefaultGetLevel(HttpContext ctx, double _, Exception ex) =>
        ex != null
            ? LogEventLevel.Error 
            : ctx.Response.StatusCode > 499 
                ? LogEventLevel.Error 
                : LogEventLevel.Information;
}

public static class LogHelper
{
    public static LogEventLevel CustomGetLevel(HttpContext ctx, double _, Exception ex) =>
        ex != null
            ? LogEventLevel.Error 
            : ctx.Response.StatusCode > 499 
                ? LogEventLevel.Error 
                : LogEventLevel.Debug; //Debug instead of Information
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    // ... Other middleware

    app.UseSerilogRequestLogging(opts => {
        opts.EnrichDiagnosticContext = LogHelper.EnrichFromRequest;
        opts.GetLevel = LogHelper.CustomGetLevel; // Use custom level function
    });

    //... other middleware
}

Log.Logger = new LoggerConfiguration()
    .MinimumLevel.Debug()
    .WriteTo.Console()
    .CreateLogger();

public static class LogHelper
{
    private static bool IsHealthCheckEndpoint(HttpContext ctx)
    {
        var endpoint = ctx.GetEndpoint();
        if (endpoint is object) // same as !(endpoint is null)
        {
            return string.Equals(
                endpoint.DisplayName, 
                "Health checks",
                StringComparison.Ordinal);
        }
        // No endpoint, so not a health check endpoint
        return false;
    }
}

public static class LogHelper
{
    public static LogEventLevel ExcludeHealthChecks(HttpContext ctx, double _, Exception ex) => 
        ex != null
            ? LogEventLevel.Error 
            : ctx.Response.StatusCode > 499 
                ? LogEventLevel.Error 
                : IsHealthCheckEndpoint(ctx) // Not an error, check if it was a health check
                    ? LogEventLevel.Verbose // Was a health check, use Verbose
                    : LogEventLevel.Information;
        }
}

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    // ... Other middleware

    app.UseSerilogRequestLogging(opts => {
        opts.EnrichDiagnosticContext = LogHelper.EnrichFromRequest;
        opts.GetLevel = LogHelper.ExcludeHealthChecks; // Use the custom level
    });

    //... other middleware
}