Log4Net Appender that submits errors to NewRelic

gistfile1.cs

using System;
using System.Collections.Generic;
using log4net.Appender;
using log4net.spi;
using Sitecore.Data.Items;

namespace SitecoreDiagnostics.NewRelic
{
    public class Log4NetErrorAppender : AppenderSkeleton
    {
        protected override void Append(LoggingEvent loggingEvent)
        {
            if (!Configuration.NewRelicEnabled)
            {
                return;
            }

            if (loggingEvent.Level < Level.ERROR)
            {
                return;
            }

            // Skip exceptions
            var isException = !string.IsNullOrEmpty(loggingEvent.GetExceptionStrRep());

            if (isException)
            {
                return;
            }

            IDictionary<string, string> parameters = new Dictionary<string, string>();

            parameters.Add("Level", loggingEvent.Level.ToString());
            parameters.Add("LoggerName", loggingEvent.LoggerName);
            parameters.Add("ThreadName", loggingEvent.ThreadName);
            parameters.Add("Machine", Environment.MachineName);
            parameters.Add("Identity", loggingEvent.Identity);

            string siteName;

            if (SitecoreContextHelper.TryGetSiteName(out siteName))
            {
                parameters.Add("Site", siteName);
            }

            string languageName;

            if (SitecoreContextHelper.TryGetLanguageName(out languageName))
            {
                parameters.Add("Language", languageName);
            }

            string databaseName;

            if (SitecoreContextHelper.TryGetDatabaseName(out databaseName))
            {
                parameters.Add("Database", databaseName);
            }

            string deviceName;

            if (SitecoreContextHelper.TryGetDeviceName(out deviceName))
            {
                parameters.Add("Device", deviceName);
            }

            Item item;

            if (SitecoreContextHelper.TryGetItem(out item))
            {
                parameters.Add("ItemPath", item.Paths.FullPath);

                global::NewRelic.Api.Agent.NewRelic.SetTransactionName("Custom", TransactionNaming.GetName(item, deviceName));
            }

            global::NewRelic.Api.Agent.NewRelic.NoticeError(loggingEvent.MessageObject.ToString(), parameters);
        }
    }
}