Proguard support (#216)

* Allow unity to finish capturing uncaught exception

* Allow to use Proguard symbolication

* Formatting

* Documentation

* Formatting

Author: konraddysput

Runtime/BacktraceClient.cs

@@ -66,6 +66,19 @@ internal AttributeProvider AttributeProvider
             }
         }
 
+#if UNITY_ANDROID
+        private bool _useProguard = false;
+
+        /// <summary>
+        /// Allow to enable Proguard support for captured Exceptions.
+        /// </summary>
+        /// <param name="symbolicationId">Proguard map symbolication id</param>
+        public void UseProguard(String symbolicationId) {
+            _useProguard = true;
+            AttributeProvider["symbolication_id"] = symbolicationId;
+        }
+#endif
+
 #if !UNITY_WEBGL
         private BacktraceMetrics _metrics;
 
@@ -971,7 +984,11 @@ internal void OnAnrDetected(string stackTrace)
             {
                 Breadcrumbs.FromMonoBehavior(anrMessage, LogType.Warning, new Dictionary<string, string> { { "stackTrace", stackTrace } });
             }
-            SendUnhandledException(hang);
+            var report = new BacktraceReport(hang);
+            if (_useProguard) {
+                report.UseSymbolication("proguard");
+            }
+            SendUnhandledExceptionReport(report);
         }
 
         /// <summary>
@@ -988,15 +1005,20 @@ internal void HandleUnhandledExceptionsFromAndroidBackgroundThread(string backgr
             }
             var message = backgroundExceptionMessage.Substring(0, splitIndex);
             var stackTrace = backgroundExceptionMessage.Substring(splitIndex);
+            var report = new BacktraceReport(new BacktraceUnhandledException(message, stackTrace));
+            if (_useProguard) {
+                report.UseSymbolication("proguard");
+            }
+            
             if (Database != null)
             {
-                var backtraceData = new BacktraceReport(new BacktraceUnhandledException(message, stackTrace)).ToBacktraceData(null, GameObjectDepth);
+                var backtraceData = report.ToBacktraceData(null, GameObjectDepth);
                 AttributeProvider.AddAttributes(backtraceData.Attributes.Attributes);
                 Database.Add(backtraceData);
             }
             else
             {
-                HandleUnityMessage(message, stackTrace, LogType.Exception);
+                SendUnhandledExceptionReport(report);
             }
             var androidNativeClient = _nativeClient as Runtime.Native.Android.NativeClient;
             if (androidNativeClient != null)
@@ -1125,7 +1147,7 @@ internal void HandleUnityMessage(string message, string stackTrace, LogType type
                 };
             }
 
-            SendUnhandledException(exception, invokeSkipApi);
+            SendUnhandledExceptionReport(new BacktraceReport(exception), invokeSkipApi);
         }
 
         /// <summary>
@@ -1142,15 +1164,15 @@ private bool SamplingShouldSkip()
             return value > Configuration.Sampling;
         }
 
-        private void SendUnhandledException(BacktraceUnhandledException exception, bool invokeSkipApi = true)
+        private void SendUnhandledExceptionReport(BacktraceReport report, bool invokeSkipApi = true)
         {
             if (OnUnhandledApplicationException != null)
             {
-                OnUnhandledApplicationException.Invoke(exception);
+                OnUnhandledApplicationException.Invoke(report.Exception);
             }
-            if (ShouldSendReport(exception, null, null, invokeSkipApi))
+            if (ShouldSendReport(report.Exception, null, null, invokeSkipApi))
             {
-                SendReport(new BacktraceReport(exception));
+                SendReport(report);
             }
         }
 

Runtime/Model/BacktraceData.cs

@@ -82,6 +82,11 @@ internal string UuidString
         /// </summary>
         public string[] Classifier;
 
+        /// <summary>
+        /// Symbolication method
+        /// </summary>
+        public String Symbolication;
+
         /// <summary>
         /// Source code information.
         /// </summary>
@@ -125,6 +130,7 @@ public BacktraceData(BacktraceReport report, Dictionary<string, string> clientAt
             Uuid = Report.Uuid;
             Timestamp = Report.Timestamp;
             Classifier = Report.ExceptionTypeReport ? new[] { Report.Classifier } : new string[0];
+            Symbolication = report.Symbolication;
 
             SetAttributes(clientAttributes, gameObjectDepth);
             SetThreadInformations();
@@ -152,6 +158,11 @@ public string ToJson()
             jObject.Add("attributes", Attributes.ToJson());
             jObject.Add("annotations", Annotation.ToJson());
             jObject.Add("threads", ThreadData.ToJson());
+            
+            if (!String.IsNullOrEmpty(Symbolication)) {
+                jObject.Add("symbolication", Symbolication);
+            }
+            
             if (SourceCode != null)
             {
                 jObject.Add("sourceCode", SourceCode.ToJson());

Runtime/Model/BacktraceReport.cs

@@ -71,6 +71,11 @@ public class BacktraceReport
         /// </summary>
         public List<BacktraceStackFrame> DiagnosticStack { get; set; }
 
+        /// <summary>
+        /// Current report symbolication method
+        /// </summary>
+        public String Symbolication { get; set; }
+
         /// <summary>
         /// Source code
         /// </summary>
@@ -119,6 +124,14 @@ public BacktraceReport(
             SetDefaultAttributes();
         }
 
+        
+        /// <summary>
+        /// Sets report symbolication type
+        /// </summary>
+        public void UseSymbolication(String symbolication) {
+            Symbolication = symbolication;
+        }
+
         private void SetDefaultAttributes()
         {
             Attributes["error.message"] = Message;