How to add line numbers into stack trace in release version?

[raysefo]

Hi,

I have an asp.net web API. I deployed it onto IIS. I got this error when I load test with JMeter. Since there are no line numbers, it is hard to detect where the error is.

Source ---
{0}BusinessService
StackTrace ---
{0}   at BusinessService.GameServices.<GamePurchase>d__11.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Game.Controllers.GameController.<PurchaseGame>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Threading.Tasks.TaskHelpersExtensions.<CastToObject>d__1`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Controllers.ApiControllerActionInvoker.<InvokeActionAsyncCore>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Filters.AuthorizationFilterAttribute.<ExecuteAuthorizationFilterAsyncCore>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Web.Http.Controllers.ExceptionFilterResult.<ExecuteAsync>d__6.MoveNext()
TargetSite ---
{0}Void MoveNext()
Message ---
{0}A second operation started on this context before a previous asynchronous operation completed. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context. Any instance members are not guaranteed to be thread safe.

Here is the code segment that might produce this error:

private async Task<HttpResponseMessage> CallRazerService(RequestDto requestDto)
        {
            HttpResponseMessage response = null;
            using (var scope = new TransactionScope(TransactionScopeAsyncFlowOption.Enabled))
            {
                //Transform DTO into GameRequest for calling Razer Initiate
                var config = new MapperConfiguration(cfg =>
                {
                    cfg.CreateMap<RequestDto, GameRequest>();
                    cfg.CreateMap<GameRequest, GameConfirmRequest>();
                    cfg.CreateMap<GameConfirmResponse, GameConfirmResponseDto>();
                    cfg.CreateMap<Coupon, CouponDto>();
                });
                var iMapper = config.CreateMapper();
                var gameRequest = iMapper.Map<RequestDto, GameRequest>(requestDto);
                //Unique reference ID
                gameRequest.referenceId = Guid.NewGuid().ToString();
                //Create signature
                gameRequest = Utilities.CreateSignature(gameRequest, RequestType.Initiate);


                //Add initiation request into database
                _unitOfWork.GameRepository.Insert(gameRequest);

                #region Call Razer initiate/confirm

                //Call Razer for initiation
                response = await Utilities.CallRazer(gameRequest, "purchaseinitiation");

                //Read response
                var htmlResponse = await response.Content.ReadAsStringAsync();
                var gameResponse = JsonConvert.DeserializeObject<GameResponse>(htmlResponse);

                //Adding initiation response into database
                _unitOfWork.GameResponseRepository.Insert(gameResponse);

                if (gameResponse.initiationResultCode == "00")
                {
                    gameRequest.validatedToken = gameResponse.validatedToken;
                    //Create signature
                    var gameConfirmRequest = Utilities.CreateSignature(gameRequest, RequestType.Confirm);

                    //Transform DTO into GameRequest for calling Razer Initiate
                    var gameConfirmRequests = iMapper.Map<GameRequest, GameConfirmRequest>(gameConfirmRequest);

                    //Add confirm request into database
                    _unitOfWork.GameConfirmRequestRepository.Insert(gameConfirmRequests);

                    //Call Razer for confirm
                    response = await Utilities.CallRazer(gameRequest, "purchaseconfirmation");

                    //Read response
                    htmlResponse = await response.Content.ReadAsStringAsync();
                    var gameConfirmResponse = JsonConvert.DeserializeObject<GameConfirmResponse>(htmlResponse);

                    //Add confirm response into database
                    _unitOfWork.GameConfirmResponseRepository.Insert(gameConfirmResponse);

                }

                #endregion

                await _unitOfWork.SaveAsync();
                scope.Complete();
            }

            return response;
        }

And here is my exception logger:

public class UnhandledExceptionLogger : ExceptionLogger
    {
        public override void Log(ExceptionLoggerContext context)
        {
            var ex = context.Exception;

            string strLogText = "";
            strLogText += Environment.NewLine + "Source ---\n{0}" + ex.Source;
            strLogText += Environment.NewLine + "StackTrace ---\n{0}" + ex.StackTrace;
            strLogText += Environment.NewLine + "TargetSite ---\n{0}" + ex.TargetSite;

            if (ex.InnerException != null)
            {
                strLogText += Environment.NewLine + "Inner Exception is {0}" + ex.InnerException;
            }
            if (ex.Message != null)
            {
                strLogText += Environment.NewLine + "Message ---\n{0}" + ex.Message;
            }

            var requestedURi = (string)context.Request.RequestUri.AbsoluteUri;
            var requestMethod = context.Request.Method.ToString();
            var timeUtc = DateTime.Now;

            SqlErrorLogging sqlErrorLogging = new SqlErrorLogging();
            ApiError apiError = new ApiError()
            {
                Message = strLogText,
                RequestUri = requestedURi,
                RequestMethod = requestMethod,
                TimeUtc = DateTime.Now
            };
            sqlErrorLogging.InsertErrorLog(apiError);
        }
    }

How can I display line numbers in the stack trace in the release version?

 

[Skydiver]

You don't have to do anything special... The line numbers will be present if it's available to the framework after any optimizations which may have been performed by the compiler and the JIT compiler.

 

[jmcilhinney]

Are you deploying the PDB file(s) with your EXE/DLL? If not, try that. I'm not sure whether that's enough or not.

 

[Skydiver]

Bingo!

 

[raysefo]

Is it enough to build in release mode and get the FULL debugging info to produce the pdb?

 

[jmcilhinney]

Without having looked right now, I believe that there is a 'PDB only' option, which will generate the PDB files without affecting the assemblies. This should be the case by default though, which is why I was wondering whether you were generating the PDBs but not distributing them.

 

[raysefo]

I think I did not deploy PDBs to the IIS. Should I do any change in my exception logger in order to have line numbers? I am saving errors in DB table by the way.

 

[jmcilhinney]

What would you change? The information is in the StakcTrace of the exception. It either contains the line numbers or it doesn't. How you log that information can't change that.

 

[raysefo]

thank you