public FileLoggerProvider(FileLoggerSettings configuration)
        {
            _configuration = configuration;
            _configuration.ChangeToken.RegisterChangeCallback(p =>
            {
                //appsettings.json changed. reload settings.
                _configuration.Reload();

                //update loggers settings form new settings
                foreach (var item in this._loggers.Values)
                {
                    InitLoggerModel model = new InitLoggerModel();
                    InitLoggerSettings(item.Name, model);
                    InitLogger(model, item);
                }
            }, null);
        }
 public static ILoggerFactory AddFile(this ILoggerFactory factory, FileLoggerSettings fileLoggerSettings)
 {
     factory.AddProvider(new FileLoggerProvider(fileLoggerSettings));
     return(factory);
 }