// Fill Error Data table properties from exception details
private static TblErrorLogs fillError(HttpContext context, Exception ex)
{
TblErrorLogs error = new TblErrorLogs();
error.ErrorCode = (HttpStatusCode)Enum.Parse(typeof(HttpStatusCode), context.Response.StatusCode.ToString());
error.Message = ex.Message;
error.StackTrace = ex.StackTrace;
error.OccurDate = DateTime.Now;
error.ErrorTitle = ex.Source;
// When execption parameter is null it may 404 or some http error occurred (i have set error type to 404 by default)
if (ex == null)
{
error.ErrorType = ErrorTypes.NotFound;
}
else if (Utility.CriticalNames.Where(prop => context.Request.Path.ToString().Contains(prop)).Any())
{
error.ErrorType = ErrorTypes.Critical;
}
else
{
error.ErrorType = ErrorTypes.RunTime;
}
error.IpAddress = context.Connection.RemoteIpAddress.ToString();
error.OccurAddress = context.Request.Path;
if (context.User.Identity.IsAuthenticated)
{
error.UserId = long.Parse(context.User.Claims.First(prop => prop.Type == ClaimTypes.NameIdentifier).Value);
}
return(error);
}
private static string LogXmlFormat(TblErrorLogs errorLog)
{
XmlWriterSettings xmlWriterSettings = new XmlWriterSettings();
xmlWriterSettings.Indent = true;
xmlWriterSettings.IndentChars = (" ");
xmlWriterSettings.CloseOutput = true;
xmlWriterSettings.OmitXmlDeclaration = true;
StringBuilder outputBuilder = new StringBuilder();
using (XmlWriter writer = XmlWriter.Create(outputBuilder, xmlWriterSettings))
{
writer.WriteStartElement("Error");
writer.WriteAttributeString("OccurLocation", errorLog.OccurAddress);
writer.WriteAttributeString("OccurDate", errorLog.OccurDate.ToString("yyyy/MM/dd H:m:s"));
writer.WriteAttributeString("ErrorType", errorLog.ErrorType.ToString());
writer.WriteElementString("ErrorCode", errorLog.ErrorCode.ToString());
writer.WriteElementString("UserId", (errorLog.UserId != null?errorLog.UserId.ToString():"Not logined"));
writer.WriteElementString("IpAddress", errorLog.IpAddress);
writer.WriteElementString("ErrorTitle", errorLog.ErrorTitle);
writer.WriteElementString("ErrorMessage", errorLog.Message);
writer.WriteElementString("StackTrace", errorLog.StackTrace);
writer.WriteEndElement();
writer.Flush();
}
return(outputBuilder.ToString());
}
public static void LogExceptionDb(HttpContext context, Exception ex)
{
// I have repository design pattern and i has registered my UnitOfWork services in startup.cs
// Also you can use your DbContext directly or any strategy you have for store data in database
var unitOfWork = (IUnitOfWork)context.RequestServices.GetService(typeof(IUnitOfWork));
TblErrorLogs error = fillError(context, ex);
unitOfWord.tblErrorLog.Insert(error);
unitOfWord.tblErrorLog.Save();
context.Response.Redirect("/Error/Index");
}
private static string LogFileFormat(TblErrorLogs errorLog)
{
string output = $"----------------- {errorLog.ErrorCode.ToString()} - {errorLog.ErrorType} -----------------\n" +
$"Error Id: {errorLog.Id}\n" +
$"Error Title: {errorLog.ErrorTitle}\n" +
$"Occur Date: {errorLog.OccurDate.ToString("yyyy/MM/dd H:m:s")}\n" +
$"Occur Address: {errorLog.OccurAddress}\n" +
$"Ip Address: {errorLog.IpAddress}\n" +
$"User Id: {(errorLog.UserId != null ? errorLog.UserId.ToString() : "Not logined")}\n" +
$"Error Message: {errorLog.Message}\n" +
$"Stack trace: {errorLog.StackTrace}";
return(output);
}
public static void LogExceptionFile(HttpContext context, Exception ex, bool inXmlFormat = false, string filePath = "errorLog/error_{0}.log")
{
//Don't forget to set restricted permission or restricted location for log file to protect from direct users access.
string fileName = string.Format(filePath, DateTime.Now.ToString("yyyyMMddHHmmss") + "_" + new Random().Next(100, 999));
TblErrorLogs error = fillError(context, ex);
if (inXmlFormat)
{
File.WriteAllText(filePath, LogXmlFormat(error));
}
else
{
File.WriteAllText(filePath, LogFileFormat(error));
}
context.Response.Redirect("/Error/Index");
}
