Add callstack field to BrdigeRuntime exception

src/python/nimbusml/internal/utils/entrypoints.py

@@ -270,6 +270,14 @@ def nimbusml_runnable_graph(self):
             '"nodes"',
             '"Nodes"')
 
+    def _parse_bridge_runtime_exception(self, exception_message):
+        r = exception_message.split("StackTrace: ", 1)
+        msg = r[0]
+        callstack = None
+        if len(r) > 1:
+            callstack = r[1]
+        return msg, callstack
+
     def _try_call_bridge(
             self,
             px_call,
@@ -281,6 +289,7 @@ def _try_call_bridge(
         try:
             ret = px_call(call_parameters)
         except RuntimeError as e:
+            msg, callstack = self._parse_bridge_runtime_exception(str(e))
             if verbose:
                 vars = '?'
                 if "data" in call_parameters:
@@ -298,16 +307,14 @@ def _try_call_bridge(
                         vars = "type={0} keys={1}".format(
                             type(od), ','.join(od))
                 if isinstance(verbose, six.integer_types) and verbose >= 2:
-                    raise BridgeRuntimeError(
-                        "{0}.\n--GRAPH--\n{1}\n--DATA--\n{2}"
-                        "\n--\nconcatenated={3}".format(
-                            str(e), str(self), vars, concatenated),
-                        model=output_modelfilename)
+                    raise BridgeRuntimeError(msg, callstack=callstack, graph=str(self), vars=vars,
+                                            concatenated=concatenated, 
+                                            model=output_modelfilename)
                 else:
-                    raise BridgeRuntimeError(
-                        str(e), model=output_modelfilename)
+                    raise BridgeRuntimeError(msg=msg, callstack=callstack,
+                        model=output_modelfilename)
             else:
-                raise e
+                raise BridgeRuntimeError(msg=msg, callstack=callstack)
         return ret
 
     def _get_separator(self):