Ejemplo n.º 1
0
        /// <summary>
        /// Convert an exception object of the PortalErrorContract
        /// </summary>
        /// <param name="exception">The exception.</param>
        /// <returns>The PortalErrorContract.</returns>
        public static PortalErrorContract FromException(Exception exception)
        {
            var error = new PortalErrorContract();

            PortalException extensionException = exception as PortalException;

            if (extensionException != null)
            {
                error.message        = extensionException.Message;
                error.httpStatusCode = extensionException.httpStatusCode.ToString();
            }
            else
            {
                // If we cannot positivly identify the exception type, we cannot show the message
                // in the exception to the end user. The exception (and it's messsage) will be
                // logged to MDS so nothing is lost.
                error.message             = "Try again. Contact support if the problem persists.";
                error.httpStatusCode      = System.Net.HttpStatusCode.InternalServerError.ToString();
                error.operationTrackingId = string.Empty;
            }

            var debugModeSetting = ConfigurationManager.AppSettings["Microsoft.Azure.Portal.Configuration.PortalConfiguration.DevelopmentMode"];

            if (string.Equals(debugModeSetting, "true"))
            {
                error.stackTrace = exception.ToString();
            }

            return(error);
        }
        /// <summary>
        /// Called when an exception occurs.
        /// </summary>
        /// <param name="filterContext">The action-filter context.</param>
        public override void OnException(ExceptionContext filterContext)
        {
            Debug.WriteLine(filterContext.Exception.ToString());

            try
            {
                filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
                try
                {
                    filterContext.HttpContext.Response.StatusCode = (int)System.Net.HttpStatusCode.InternalServerError;
                }
                catch (HttpException httpException)
                {
                    // Attempting to change the response status code after the response has started streaming to the client causes
                    // an exception. We can't fix the stream the from this state, so ensure the original exception is logged.
                    string logMessage = string.Format(CultureInfo.InvariantCulture,
                                                      "Unable to report exception to the client. A HttpException occured while attempting to set the response status code to InternalServerError. " +
                                                      "This can occur if the exception is thrown after the response to the client has started down the wire.{0}{0}" +
                                                      "The response was in this state: {0}{1}{0}{0}" +
                                                      "The HttpException was: {2}{0}{0}" +
                                                      "The original exception was already logged and is repeated here for convenience only: {3}",
                                                      Environment.NewLine,
                                                      ResponseSummary(filterContext),
                                                      httpException,
                                                      filterContext.Exception.ToString());

                    Debug.WriteLine(logMessage);

                    // The client typically sees the 200 and generates a parseerror at this point irrespective of whether we rethrow
                    // or set ExceptionHandled to true (or to false). We may as well set it to true and save another logging attempt.
                    filterContext.ExceptionHandled = true;
                    return;
                }

                // Handle aggregate exceptions
                var aggregateException = filterContext.Exception as AggregateException;
                if (aggregateException != null)
                {
                    filterContext.Exception = aggregateException.Flatten().InnerException;
                }

                PortalException extensionException = filterContext.Exception as PortalException;
                if (extensionException != null)
                {
                    filterContext.HttpContext.Response.StatusCode        = (int)extensionException.httpStatusCode;
                    filterContext.HttpContext.Response.StatusDescription = NormalizeString(extensionException.Message);
                }

                filterContext.Result = new JsonResult()
                {
                    JsonRequestBehavior = JsonRequestBehavior.AllowGet,
                    Data = PortalErrorContract.FromException(filterContext.Exception)
                };

                filterContext.ExceptionHandled = true;
            }
            catch (Exception exception)
            {
                Debug.WriteLine(exception);
            }
        }