Serilog - Output/Enrich All Messages with MethodName from which log entry was Called

Question

Is there anyway to enrich all Serilog output with the Method Name.

For Instance consider If I have the following;

Public Class MyClassName

  Private Function MyFunctionName() As Boolean
      Logger.Information("Hello World")
      Return True
  End Function

End Class

The desired output would be as follows;

2015-04-06 18:41:35.361 +10:00 [Information] [MyFunctionName] Hello World!

Actually the Fully Qualified Name would be good.

2015-04-06 18:41:35.361 +10:00 [Information] [MyClassName.MyFunctionName] Hello World!

It seems that "Enrichers" are only good for Static Information and won't work each time.

Answer 1

in case you need a version in C#:

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);     } } 

use like this:

// at the beginning of the class private static Serilog.ILogger Log => Serilog.Log.ForContext<MyClass>();  // in the method Log.Here().Information("Hello, world!"); 

Remember to add those properties in the message template. You can use something like this:

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(); 

Answer 2

It's possible to do this with an enricher by reflecting over the call stack, but very expensive to do so, so Serilog doesn't offer it.

Instead you can use something like:

Logger.Here().Information("Hello, world!"); 

and implement the Here() method as an extension method on ILogger:

<Extension> Public Sub Here(ByVal logger as ILogger,     <CallerMemberName> Optional memberName As String = Nothing)      Return logger.ForContext("MemberName", memberName) End Sub  

Answer 3

Based on MovGP0's answer (for C#),

I created a solution that doesn't require the Here()-Method in every line where you want to log, by simply adding a custom Log.cs-Class into the "root namespace" of a project.

For more info see: https://gist.github.com/litetex/b88fe0531e5acea82df1189643fb1f79