Include stack trace in Course Rerun errors; Log errors.

common/djangoapps/course_action_state/managers.py

@@ -1,6 +1,7 @@
 """
 Model Managers for Course Actions
 """
+import traceback
 from django.db import models, transaction
 
 
@@ -135,14 +136,14 @@ class CourseRerunUIStateManager(CourseActionUIStateManager):
             new_state=self.State.SUCCEEDED,
         )
 
-    def failed(self, course_key, exception):
+    def failed(self, course_key):
         """
-        To be called when an existing rerun for the given course has failed with the given exception.
+        To be called within an exception handler when an existing rerun for the given course has failed.
         """
         self.update_state(
             course_key=course_key,
             new_state=self.State.FAILED,
-            message=exception.message,
+            message=traceback.format_exc(),
         )
 
 

common/djangoapps/course_action_state/tests/test_rerun_manager.py

@@ -91,12 +91,17 @@ class TestCourseRerunStateManager(TestCase):
 
         # set state to fail
         exception = Exception("failure in rerunning")
-        CourseRerunState.objects.failed(course_key=self.course_key, exception=exception)
-        self.expected_rerun_state.update({
-            'state': CourseRerunUIStateManager.State.FAILED,
-            'message': exception.message,
-        })
+        try:
+            raise exception
+        except:
+            CourseRerunState.objects.failed(course_key=self.course_key)
+
+        self.expected_rerun_state.update(
+            {'state': CourseRerunUIStateManager.State.FAILED}
+        )
+        self.expected_rerun_state.pop('message')
         rerun = self.verify_rerun_state()
+        self.assertIn(exception.message, rerun.message)
 
         # dismiss ui and verify
         self.dismiss_ui_and_verify(rerun)