Umbraco GrayLog Appender

GrayLogAppender.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using AtlanticBT.Core.Logging;
using AtlanticBT.Core.Logging.Models;
using log4net.Appender;
using log4net.Core;

namespace AtlanticBT.Common.Umbraco.LogAppender
{
    public class GrayLogAppender : AppenderSkeleton
    {
        protected override void Append(LoggingEvent loggingEvent)
        {
            var logLevel = MapLogLevel(loggingEvent);

            var message = loggingEvent.RenderedMessage;
            if (Layout != null)
            {
                message = RenderLoggingEvent(loggingEvent);
            }

            var httpContext = HttpContext.Current;
            dynamic request = null;
            if (httpContext != null)
            {
                try
                {
                    var httpRequest = httpContext.Request;
                    request = new
                    {
                        Url = httpRequest.Url,
                        UrlReferrer = httpRequest.UrlReferrer,
                        RequestType = httpRequest.RequestType,
                        FormData = httpRequest.Form
                    };
                }
                catch (HttpException)
                {
                    //--This is thrown when the http request is not available
                }
            }

            if (loggingEvent.ExceptionObject != null)
            {
                AbtLoggingService.Log(message, "Umbraco Error", loggingEvent.ExceptionObject, logLevel, request);
            }
            else
            {
                AbtLoggingService.Log(message, "Umbraco", level: logLevel, dataObject: request);
            }
        }

        private static LogLevels MapLogLevel(LoggingEvent loggingEvent)
        {
            if (loggingEvent.Level == Level.Alert)
            {
                return LogLevels.Alert;
            }

            if (loggingEvent.Level == Level.Critical
                || loggingEvent.Level == Level.Fatal
                || loggingEvent.Level == Level.Severe)
            {
                return LogLevels.Critical;
            }

            if (loggingEvent.Level == Level.Emergency)
            {
                return LogLevels.Emergency;
            }

            if (loggingEvent.Level == Level.Warn)
            {
                return LogLevels.Warn;
            }

            if (loggingEvent.Level == Level.Info)
            {
                return LogLevels.Info;
            }

            if (loggingEvent.Level == Level.Debug)
            {
                return LogLevels.Debug;
            }

            if (loggingEvent.Level == Level.Notice)
            {
                return LogLevels.Notice;
            }

            return LogLevels.Error;
        }
    }
}

log4net.config

<?xml version="1.0"?>

<!-- 
    Example log4net.config setup to use the GrayLogAppender
    Either use use config or follow these steps
    1. Add this new appender to your config: <appender name="GrayLogAppender" ...
    2. Reference the new appender in <root> by adding <appender-ref ref="GrayLogAppender" />
    3. Clear any unused appenders in <root>
-->

<log4net>

  <root>
    <priority value="Info"/>
    <appender-ref ref="GrayLogAppender" />
  </root>
  
  <appender name="GrayLogAppender" type="AtlanticBT.Common.Umbraco.LogAppender.GrayLogAppender,AtlanticBT.Common.Umbraco.LogAppender">
    <threshold value="INFO" />
  </appender>

</log4net>