c＃简化的方法将异常线编号纳入Serilog

Question

我正在使用Serilog使用此代码来将异常的行编写到我的日志中。这里的问题是行号是将异常放在捕获块中而不是发生异常的实际线路的地方。

问题

try
{
  //line: 2
     throw new Exception();

}
catch(Exception ex)
{
    //line: 15
       Log.Here().Error(ex, "Hello, world!");
   //Serilog will log the exception line as line 15 instead of line 2 
   //which doesn't help me at all if I have 100s of lines of code 
   //that could throw an actual exception
}

这是我当前的serilog代码，

public static class LoggerExtensions
{
    public static ILogger Here(this ILogger logger,
        [CallerMemberName] string memberName = "",
        [CallerFilePath] string sourceFilePath = "",
        [CallerLineNumber] int sourceLineNumber = 0) {
        return logger
            .ForContext("MemberName", memberName)
            .ForContext("FilePath", sourceFilePath)
            .ForContext("LineNumber", sourceLineNumber);
    }
}

我在我的每个类中都使用这样的Serilog代码，还需要简化以接受任何T型T类，但这是另一天的另一个问题：

     Serilog.Log.ForContext<T>()

//类

private static Serilog.ILogger Log => Serilog.Log.ForContext<MyClass>();

// in the method
Log.Here().Information("Hello, world!");


var outputTemplate = "[{Timestamp:HH:mm:ss} {Level}] {SourceContext}{NewLine}{Message}{NewLine}in method {MemberName} at {FilePath}:{LineNumber}{NewLine}{Exception}{NewLine}";

Log.Logger = new LoggerConfiguration()
            .MinimumLevel.Warning()
            .Enrich.FromLogContext()
            .WriteTo.RollingFile("log/{Date}.log", outputTemplate, LogEventLevel.Warning)
            .WriteTo.Console(LogEventLevel.Warning, outputTemplate, theme: AnsiConsoleTheme.Literate)
            .CreateLogger();

部分解决方案

这是我用来找到最初发生异常的实际线路的代码。而不是在每个捕获块中一遍又一遍地使用这3行代码（stacktrace，frax，line），而是想找到一种使用它的方法，并自动将其正确附加到Serilog输出模板上。

catch(Exception ex)
{
   var stackTrace = new StackTrace(ex, true);
   var frame = stackTrace.GetFrame(0);
   var line = frame.GetFileLineNumber();// This is what I need as the actual line number
   Log.Here().Error(ex, $"Exception occured on line # {line}"); //This works but doesn't follow the output template pattern
}

Answer 1

只需将代码从捕获块移动到您的“ there（）”方法中

public static class LoggerExtensions
{
    public static ILogger Here(this ILogger logger,
        [CallerMemberName] string memberName = "",
        [CallerFilePath] string sourceFilePath = "",
        [CallerLineNumber] int sourceLineNumber = 0) {
      
       var stackTrace = new StackTrace(ex, true);
       var frame = stackTrace.GetFrame(0);
       var line = frame.GetFileLineNumber();

        return logger
            .ForContext("MemberName", memberName)
            .ForContext("FilePath", sourceFilePath)
            .ForContext("LineNumber", **line**);
    }
}

，这样就简单地将方法称为相同

Log.Here(ex).Error(ex, "Hello, world!");

，或者您只需将日志直接写入该方法中

public static class LoggerExtensions
    {
        public static ILogger Here(this ILogger logger, Exception ex, string message,
            [CallerMemberName] string memberName = "",
            [CallerFilePath] string sourceFilePath = "",
            [CallerLineNumber] int sourceLineNumber = 0) {
          
           var stackTrace = new StackTrace(ex, true);
           var frame = stackTrace.GetFrame(0);
           var line = frame.GetFileLineNumber();
            
                LogContext.PushProperty("MemberName", memberName)
                LogContext.PushProperty("FilePath", sourceFilePath)
                LogContext.PushProperty("LineNumber", **line**);
          Log.Error(ex, message);
        }
    }

，然后只需调用

Log.Here(ex, "Hello, world!");

Answer 2

caller信息 .NET 4.5。这将进行编译，这是必须手动检查堆栈跟踪的很大进步。

    public void Log(string message,
            [CallerFilePath] string filePath = "",
            [CallerLineNumber] int lineNumber = 0)
    {
        // Do logging
    }