LoggerUnitOfWork.cs

public class LoggerUnitOfWork : IManageUnitsOfWork
{
    private static readonly ILog logger = LogManager.GetLogger(typeof(LoggerUnitOfWork));
    
    public void Begin()
    {
        logger.Info("Started processing a message.");
    }

    public void End(Exception ex = null)
    {
        if (ex != null)
        {
            logger.Error("Finished processing with errors.", ex);
        }
        else
        {
            logger.Info("Successfully processed the message.");
        }
    }
}