public static void Main(string[] args)
{
AspNetLayoutRendererBase.Register("TR_ID", (logEventInfo, httpContext, loggingConfiguration) =>
{
StringValues traceValues;
if (httpContext == null)
{
return(null);
}
if (!httpContext.Request.Headers.TryGetValue("TR_ID", out traceValues))
{
return(null);
}
return(traceValues.FirstOrDefault());
});
var logger = NLog.Web.NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger();
try
{
logger.Debug("init 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 void WithNLogger(Action <LoggerConfig> config)
{
// 自定义 layout renderer 一定要在加载 nlog.config 之前
// 详情见 issue#4014：https://github.com/NLog/NLog/issues/4014#issuecomment-644997803
var loggerConfig = new LoggerConfig();
config?.Invoke(loggerConfig);
AspNetLayoutRendererBase.Register("NetAddress", (_, _, _) => loggerConfig.NetAddress);
AspNetLayoutRendererBase.Register("LogLevel", (_, _, _) => loggerConfig.LogLevel);
RegisterLayoutRenderer();
_services.AddSingleton(NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger());
}
private static void RegisterLayoutRenderer()
{
AspNetLayoutRendererBase.Register("requestId", (logInfo, context, cfg) => getHeaders(context, "requestId"));
AspNetLayoutRendererBase.Register("platformId", (logInfo, context, cfg) => getHeaders(context, "platformId"));
AspNetLayoutRendererBase.Register("userflag", (logInfo, context, cfg) => getHeaders(context, "userflag"));
LayoutRenderer.Register <RequestDurationLayoutRenderer>("RequestDuration");
LayoutRenderer.Register <YearLayoutRenderer>("Year");
LayoutRenderer.Register <MonthLayoutRenderer>("Month");
LayoutRenderer.Register <HoursLayoutRenderer>("Hours");
string getHeaders(HttpContext context, string key)
{
if (context == null)
{
return(default);
public void RegisterLayoutRendererTest()
{
var httpcontextMock = SetupHttpAccessorWithHttpContext();
#if ASP_NET_CORE
httpcontextMock.Connection.LocalPort.Returns(123);
#else
httpcontextMock.Request.RawUrl.Returns("123");
#endif
// Act
AspNetLayoutRendererBase.Register("test-web",
(logEventInfo, httpContext, loggingConfiguration) =>
#if ASP_NET_CORE
httpContext.Connection.LocalPort);
#else
httpContext.Request.RawUrl);
#endif
Layout l = "${test-web}";
var restult = l.Render(LogEventInfo.CreateNullEvent());
// Assert
Assert.Equal("123", restult);
}
/// <summary>
/// Register a custom layout renderer using custom delegate-method <paramref name="layoutMethod" />
/// </summary>
/// <param name="setupBuilder">Fluent style</param>
/// <param name="name">Name of the layout renderer - without ${}.</param>
/// <param name="layoutMethod">Delegate method that returns layout renderer output.</param>
public static ISetupExtensionsBuilder RegisterAspNetLayoutRenderer(this ISetupExtensionsBuilder setupBuilder, string name, Func <LogEventInfo, HttpContextBase, LoggingConfiguration, object> layoutMethod)
{
AspNetLayoutRendererBase.Register(name, layoutMethod);
return(setupBuilder);
}