Revert "Adding entries of Call Stack Manager in StudentModule and StudentModuleHistory"

lms/djangoapps/courseware/models.py

@@ -25,7 +25,6 @@ from model_utils.models import TimeStampedModel
 from student.models import user_by_anonymous_id
 from submissions.models import score_set, score_reset
 
-from openedx.core.djangoapps.call_stack_manager import CallStackManager, CallStackMixin
 from xmodule_django.models import CourseKeyField, LocationKeyField, BlockTypeKeyField  # pylint: disable=import-error
 log = logging.getLogger(__name__)
 
@@ -69,20 +68,11 @@ class ChunkingManager(models.Manager):
         return res
 
 
-class ChunkingCallStackManager(CallStackManager, ChunkingManager):
-    """
-    A derived class of ChunkingManager, and CallStackManager
-    """
-    pass
-
-
-class StudentModule(CallStackMixin, models.Model):
+class StudentModule(models.Model):
     """
     Keeps student state for a particular module in a particular course.
     """
-    # uses both ChunkingManager and CallStackManager in ChuckingCallStackManager
-    objects = ChunkingCallStackManager()
-
+    objects = ChunkingManager()
     MODEL_TAGS = ['course_id', 'module_type']
 
     # For a homework problem, contains a JSON
@@ -94,7 +84,7 @@ class StudentModule(CallStackMixin, models.Model):
                     ('chapter', 'Section'),
                     ('sequential', 'Subsection'),
                     ('library_content', 'Library Content'))
-    # These three are the key for the object
+    ## These three are the key for the object
     module_type = models.CharField(max_length=32, choices=MODULE_TYPES, default='problem', db_index=True)
 
     # Key used to share state. This is the XBlock usage_id
@@ -152,13 +142,10 @@ class StudentModule(CallStackMixin, models.Model):
         return unicode(repr(self))
 
 
-class StudentModuleHistory(CallStackMixin, models.Model):
+class StudentModuleHistory(models.Model):
     """Keeps a complete history of state changes for a given XModule for a given
     Student. Right now, we restrict this to problems so that the table doesn't
     explode in size."""
-
-    # Add call stack manager as default Manager
-    objects = CallStackManager()
     HISTORY_SAVING_TYPES = {'problem'}
 
     class Meta(object):  # pylint: disable=missing-docstring

lms/djangoapps/courseware/user_state_client.py

@@ -18,8 +18,6 @@ from courseware.models import StudentModule, StudentModuleHistory
 from contracts import contract, new_contract
 from opaque_keys.edx.keys import UsageKey
 
-from openedx.core.djangoapps.call_stack_manager import donottrack
-
 new_contract('UsageKey', UsageKey)
 
 
@@ -27,6 +25,7 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
     """
     An interface that uses the Django ORM StudentModule as a backend.
     """
+
     class ServiceUnavailable(XBlockUserStateClient.ServiceUnavailable):
         """
         This error is raised if the service backing this client is currently unavailable.
@@ -54,7 +53,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
         """
         self.user = user
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(
         username="basestring",
         block_key=UsageKey,
@@ -84,11 +82,7 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
 
         return state
 
-    @donottrack(StudentModule, StudentModuleHistory)
-    @contract(username="basestring",
-              block_key=UsageKey,
-              state="dict(basestring: *)",
-              scope=ScopeBase)
+    @contract(username="basestring", block_key=UsageKey, state="dict(basestring: *)", scope=ScopeBase)
     def set(self, username, block_key, state, scope=Scope.user_state):
         """
         Set fields for a particular XBlock.
@@ -101,7 +95,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
         """
         self.set_many(username, {block_key: state}, scope)
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(
         username="basestring",
         block_key=UsageKey,
@@ -120,7 +113,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
         """
         return self.delete_many(username, [block_key], scope, fields=fields)
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(
         username="basestring",
         block_key=UsageKey,
@@ -147,7 +139,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
             field: date for (_, field, date) in results
         }
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(username="basestring", block_keys="seq(UsageKey)|set(UsageKey)")
     def _get_student_modules(self, username, block_keys):
         """
@@ -175,7 +166,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
                 usage_key = student_module.module_state_key.map_into_course(student_module.course_id)
                 yield (student_module, usage_key)
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(
         username="basestring",
         block_keys="seq(UsageKey)|set(UsageKey)",
@@ -207,7 +197,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
                 state = json.loads(module.state)
             yield (usage_key, state)
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(username="basestring", block_keys_to_state="dict(UsageKey: dict(basestring: *))", scope=ScopeBase)
     def set_many(self, username, block_keys_to_state, scope=Scope.user_state):
         """
@@ -254,7 +243,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
                 # We just read this object, so we know that we can do an update
                 student_module.save(force_update=True)
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(
         username="basestring",
         block_keys="seq(UsageKey)|set(UsageKey)",
@@ -288,7 +276,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
             # We just read this object, so we know that we can do an update
             student_module.save(force_update=True)
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(
         username="basestring",
         block_keys="seq(UsageKey)|set(UsageKey)",
@@ -321,7 +308,6 @@ class DjangoXBlockUserStateClient(XBlockUserStateClient):
             for field in json.loads(student_module.state):
                 yield (usage_key, field, student_module.modified)
 
-    @donottrack(StudentModule, StudentModuleHistory)
     @contract(username="basestring", block_key=UsageKey, scope=ScopeBase)
     def get_history(self, username, block_key, scope=Scope.user_state):
         """

openedx/core/djangoapps/call_stack_manager/core.py

@@ -27,7 +27,7 @@ How to use-
 4. Decorator is a parameterized decorator with class name/s as argument
     How to use -
     1. Import following
-        from openedx.core.djangoapps.call_stack_manager import donottrack
+        import from openedx.core.djangoapps.call_stack_manager import donottrack
 """
 
 import logging
@@ -132,15 +132,13 @@ def donottrack(*classes_not_to_be_tracked):
                 global TRACK_FLAG  # pylint: disable=W0603
                 current_flag = TRACK_FLAG
                 TRACK_FLAG = False
-                return_value = function(*args, **kwargs)
+                function(*args, **kwargs)
                 TRACK_FLAG = current_flag
-                return return_value
             else:
                 global HALT_TRACKING  # pylint: disable=W0603
                 current_halt_track = HALT_TRACKING
                 HALT_TRACKING = classes_not_to_be_tracked
-                return_value = function(*args, **kwargs)
+                function(*args, **kwargs)
                 HALT_TRACKING = current_halt_track
-                return return_value
         return wrapper
     return real_donottrack

openedx/core/djangoapps/call_stack_manager/tests.py

@@ -109,13 +109,6 @@ def donottrack_func_child():
     ModelMixin.objects.all()
 
 
-@donottrack()
-def donottrack_check_with_return():
-    """ function that returns something i.e. a wrapped function returning some value
-    """
-    return 42
-
-
 @patch('openedx.core.djangoapps.call_stack_manager.core.log.info')
 @patch('openedx.core.djangoapps.call_stack_manager.core.REGULAR_EXPS', [])
 class TestingCallStackManager(TestCase):
@@ -220,11 +213,3 @@ class TestingCallStackManager(TestCase):
         for __ in range(1, 5):
             ModelMixinCallStckMngr(id_field=1).save()
         self.assertEqual(len(log_capt.call_args_list), 1)
-
-    def test_donottrack_with_return(self, log_capt):
-        """ Test for @donottrack
-        Checks if wrapper function returns the same value as wrapped function
-        """
-        everything = donottrack_check_with_return()
-        self.assertEqual(everything, 42)
-        self.assertEqual(len(log_capt.call_args_list), 0)