Set error.type attribute (#42)

* Set error.type attribute

* Rename attribute name

Author: konraddysput

Backtrace/Base/BacktraceBase.cs

@@ -319,8 +319,7 @@ public virtual void HandleApplicationException()
         /// </summary>
         public virtual void HandleApplicationThreadException(object sender, System.Threading.ThreadExceptionEventArgs e)
         {
-            var exception = e.Exception as Exception;
-            Send(new BacktraceReport(exception));
+            ReportUnhandledException(e.Exception);
             OnUnhandledApplicationException?.Invoke(e.Exception);
         }
 
@@ -346,18 +345,26 @@ private void CurrentDomain_UnhandledException(object sender, UnhandledExceptionE
 
         private void ReportUnhandledException(Exception exception)
         {
+            if (UnpackAggregateExcetpion && exception is AggregateException)
+            {
+                exception = exception.InnerException;
+            }
             // Always prefer to use Database rather than freezing the app because of the http request.
             // On environment where the database cannot be enabled for any reason, we still want to report
             // data and in this situation we prefer to take this tradeoff. 
             var report = new BacktraceReport(exception);
+            report.SetReportErrorType("Unhandled Exception");
             if (Database != null)
             {
-                Database.Add(report, Attributes, MiniDumpType);
-            }
-            else
-            {
-                Send(report);
+                var result = Database.Add(report, Attributes, MiniDumpType);
+                // try to send anyway if the database refuses to accept a report for any reason.
+                if (result != null)
+                {
+                    return;
+                }
             }
+            Send(report);
+
         }
 #endif
     }

Backtrace/Model/BacktraceReport.cs

@@ -93,6 +93,8 @@ public class BacktraceReport
 
         internal readonly bool _reflectionMethodName;
 
+        private const string ERROR_TYPE_ATTRIBUTE = "error.type";
+
         /// <summary>
         /// Create new instance of Backtrace report to sending a report with custom client message
         /// </summary>
@@ -108,6 +110,10 @@ public BacktraceReport(
             : this(null as Exception, attributes, attachmentPaths, reflectionMethodName)
         {
             Message = message;
+            if (!Attributes.ContainsKey(ERROR_TYPE_ATTRIBUTE))
+            {
+                SetReportErrorType("Message");
+            }
         }
 
         /// <summary>
@@ -131,6 +137,10 @@ public BacktraceReport(
             _reflectionMethodName = reflectionMethodName;
             Message = ExceptionTypeReport ? exception.Message : string.Empty;
             SetCallingAssemblyInformation();
+            if (ExceptionTypeReport && !Attributes.ContainsKey(ERROR_TYPE_ATTRIBUTE))
+            {
+                SetReportErrorType("Exception");
+            }
         }
 
         /// <summary>
@@ -193,5 +203,10 @@ internal BacktraceReport CreateInnerReport()
             copy.Classifier = copy.Exception.GetType().Name;
             return copy;
         }
+
+        internal void SetReportErrorType(string errorType)
+        {
+            Attributes[ERROR_TYPE_ATTRIBUTE] = errorType;
+        }
     }
 }