refactor: rename ModuleStore runtimes now that XModules are gone

All renames, excluding test classes:tt

* xmodule.x_module:DescriptorSystem ->
  xmodule.x_module:ModuleStoreRuntime

* xmodule.mako_block:MakoDescriptorSystem ->
  xmodule.x_module:ModuleStoreRuntime

* xmodule.x_module:XMLParsingSystem ->
  xmodule.modulestore.xml:XMLParsingModuleStoreRuntime

* xmodule.modulestore.xml:ImportSystem ->
  xmodule.modulestore.xml:XMLImportingModuleStoreRuntime

* xmodule.modulestore.mongo.base:CachingDescriptorSystem ->
  xmodule.modulestore.mongo.base:OldModuleStoreRuntime

* xmodule.modulestore.split_mongo.caching_descriptor_system:CachingDescriptorSystem ->
  xmodule.modulestore.split_mongo.runtime:SplitModuleStoreRuntime

cms/djangoapps/contentstore/helpers.py

@@ -320,7 +320,7 @@ def _import_xml_node_to_parent(
     block_type = node.tag
 
     # Modulestore's IdGenerator here is SplitMongoIdManager which is assigned
-    # by CachingDescriptorSystem Runtime and since we need our custom ImportIdGenerator
+    # by SplitModuleStoreRuntime and since we need our custom ImportIdGenerator
     # here we are temporaraliy swtiching it.
     original_id_generator = runtime.id_generator
 
@@ -357,7 +357,8 @@ def _import_xml_node_to_parent(
     else:
         # We have to handle the children ourselves, because there are lots of complex interactions between
         #    * the vanilla XBlock parse_xml() method, and its lack of API for "create and save a new XBlock"
-        #    * the XmlMixin version of parse_xml() which only works with ImportSystem, not modulestore or the v2 runtime
+        #    * the XmlMixin version of parse_xml() which only works with XMLImportingModuleStoreRuntime,
+        #      not modulestore or the v2 runtime
         #    * the modulestore APIs for creating and saving a new XBlock, which work but don't support XML parsing.
         # We can safely assume that if the XBLock class supports children, every child node will be the XML
         # serialization of a child block, in order. For blocks that don't support children, their XML content/nodes

cms/djangoapps/contentstore/views/tests/test_block.py

@@ -1845,7 +1845,7 @@ def setUp(self):
 
     @XBlockAside.register_temp_plugin(AsideTest, "test_aside")
     @patch(
-        "xmodule.modulestore.split_mongo.caching_descriptor_system.CachingDescriptorSystem.applicable_aside_types",
+        "xmodule.modulestore.split_mongo.runtime.SplitModuleStoreRuntime.applicable_aside_types",
         lambda self, block: ["test_aside"],
     )
     def test_duplicate_equality_with_asides(self):
@@ -2690,8 +2690,8 @@ def test_add_groups(self):
         group_id_to_child = split_test.group_id_to_child.copy()
         self.assertEqual(2, len(group_id_to_child))
 
-        # CachingDescriptorSystem is used in tests.
-        # CachingDescriptorSystem doesn't have user service, that's needed for
+        # SplitModuleStoreRuntime is used in tests.
+        # SplitModuleStoreRuntime doesn't have user service, that's needed for
         # SplitTestBlock. So, in this line of code we add this service manually.
         split_test.runtime._services["user"] = DjangoXBlockUserService(  # pylint: disable=protected-access
             self.user
@@ -4375,7 +4375,7 @@ def test_self_paced_item_visibility_state(self):
 
 
 @patch(
-    "xmodule.modulestore.split_mongo.caching_descriptor_system.CachingDescriptorSystem.applicable_aside_types",
+    "xmodule.modulestore.split_mongo.runtime.SplitModuleStoreRuntime.applicable_aside_types",
     lambda self, block: ["test_aside"],
 )
 class TestUpdateFromSource(ModuleStoreTestCase):

common/djangoapps/static_replace/services.py

@@ -16,7 +16,7 @@ class ReplaceURLService(Service):
     A service for replacing static/course/jump-to-id URLs with absolute URLs in XBlocks.
 
     Args:
-        block: (optional) An XBlock instance. Used when retrieving the service from the DescriptorSystem.
+        block: (optional) An XBlock instance. Used when retrieving the service from the ModuleStoreRuntime.
         static_asset_path: (optional) Path for static assets, which overrides data_directory and course_id, if nonempty
         static_paths_out: (optional) Array to collect tuples for each static URI found:
             * the original unmodified static URI
@@ -39,7 +39,7 @@ def __init__(
         self.jump_to_id_base_url = jump_to_id_base_url
         self.lookup_asset_url = lookup_asset_url
         # This is needed because the `Service` class initialization expects the XBlock passed as an `xblock` keyword
-        #  argument, but the `service` method from the `DescriptorSystem` passes a `block`.
+        #  argument, but the `service` method from the `ModuleStoreRuntime` passes a `block`.
         self._xblock = self.xblock() or block
 
     def replace_urls(self, text, static_replace_only=False):

docs/decisions/0020-upstream-downstream.rst

@@ -242,8 +242,7 @@ To support the Libraries Relaunch in Sumac:
     Video blocks.
 
 * We will define method(s) for syncing update on the XBlock runtime so that
-  they are available in the SplitModuleStore's XBlock Runtime
-  (CachingDescriptorSystem).
+  they are available in the SplitModuleStoreRuntime.
 
   * Either in the initial implementation or in a later implementation, it may
     make sense to declare abstract versions of the syncing method(s) higher up
@@ -350,10 +349,10 @@ change through development and code review.
 
 
     ###########################################################################
-    # xmodule/modulestore/split_mongo/caching_descriptor_system.py
+    # xmodule/modulestore/split_mongo/runtime.py
     ###########################################################################
 
-    class CachingDescriptorSystem(...):
+    class SplitModuleStoreRuntime(...):
 
         def validate_upstream_key(self, usage_key: UsageKey | str) -> UsageKey:
             """

lms/djangoapps/courseware/block_render.py

@@ -122,7 +122,7 @@ class LmsModuleRenderError(Exception):
 def make_track_function(request):
     '''
     Make a tracking function that logs what happened.
-    For use in DescriptorSystem.
+    For use in ModuleStoreRuntime.
     '''
     from common.djangoapps.track import views as track_views
 

lms/djangoapps/courseware/tests/helpers.py

@@ -68,7 +68,7 @@ class BaseTestXmodule(ModuleStoreTestCase):
 
     def new_module_runtime(self, runtime=None, **kwargs):
         """
-        Generate a new DescriptorSystem that is minimally set up for testing
+        Generate a new ModuleStoreRuntime that is minimally set up for testing
         """
         if runtime:
             return prepare_block_runtime(runtime, course_id=self.course.id, **kwargs)

lms/djangoapps/courseware/tests/test_block_render.py

@@ -57,7 +57,7 @@
 from xmodule.modulestore.tests.test_asides import AsideTestType  # lint-amnesty, pylint: disable=wrong-import-order
 from xmodule.services import RebindUserServiceError
 from xmodule.video_block import VideoBlock  # lint-amnesty, pylint: disable=wrong-import-order
-from xmodule.x_module import STUDENT_VIEW, DescriptorSystem  # lint-amnesty, pylint: disable=wrong-import-order
+from xmodule.x_module import STUDENT_VIEW, ModuleStoreRuntime  # lint-amnesty, pylint: disable=wrong-import-order
 from common.djangoapps.course_modes.models import CourseMode  # lint-amnesty, pylint: disable=reimported
 from common.djangoapps.student.tests.factories import (
     BetaTesterFactory,
@@ -461,8 +461,11 @@ def test_rebinding_same_user(self, block_type):
     @override_settings(FIELD_OVERRIDE_PROVIDERS=(
         'lms.djangoapps.courseware.student_field_overrides.IndividualStudentOverrideProvider',
     ))
-    @patch('xmodule.modulestore.xml.ImportSystem.applicable_aside_types', lambda self, block: ['test_aside'])
-    @patch('xmodule.modulestore.split_mongo.caching_descriptor_system.CachingDescriptorSystem.applicable_aside_types',
+    @patch(
+        'xmodule.modulestore.xml.XMLImportingModuleStoreRuntime.applicable_aside_types',
+        lambda self, block: ['test_aside']
+    )
+    @patch('xmodule.modulestore.split_mongo.runtime.SplitModuleStoreRuntime.applicable_aside_types',
            lambda self, block: ['test_aside'])
     @XBlockAside.register_temp_plugin(AsideTestType, 'test_aside')
     @ddt.data('regular', 'test_aside')
@@ -1920,7 +1923,7 @@ def _get_anonymous_id(self, course_id, xblock_class, should_get_deprecated_id: b
             location=location,
             static_asset_path=None,
             _runtime=Mock(
-                spec=DescriptorSystem,
+                spec=ModuleStoreRuntime,
                 resources_fs=None,
                 mixologist=Mock(_mixins=(), name='mixologist'),
                 _services={},
@@ -1933,7 +1936,7 @@ def _get_anonymous_id(self, course_id, xblock_class, should_get_deprecated_id: b
             fields={},
             days_early_for_beta=None,
         )
-        block.runtime = DescriptorSystem(None, None, None)
+        block.runtime = ModuleStoreRuntime(None, None, None)
         # Use the xblock_class's bind_for_student method
         block.bind_for_student = partial(xblock_class.bind_for_student, block)
 
@@ -2006,9 +2009,9 @@ def test_context_contains_display_name(self, mock_tracker):
         assert problem_display_name == block_info['display_name']
 
     @XBlockAside.register_temp_plugin(AsideTestType, 'test_aside')
-    @patch('xmodule.modulestore.mongo.base.CachingDescriptorSystem.applicable_aside_types',
+    @patch('xmodule.modulestore.mongo.base.OldModuleStoreRuntime.applicable_aside_types',
            lambda self, block: ['test_aside'])
-    @patch('xmodule.x_module.DescriptorSystem.applicable_aside_types',
+    @patch('xmodule.x_module.ModuleStoreRuntime.applicable_aside_types',
            lambda self, block: ['test_aside'])
     def test_context_contains_aside_info(self, mock_tracker):
         """

lms/djangoapps/courseware/tests/test_video_mongo.py

@@ -47,7 +47,7 @@
 from xmodule.modulestore.tests.django_utils import TEST_DATA_SPLIT_MODULESTORE
 # noinspection PyUnresolvedReferences
 from xmodule.tests.helpers import override_descriptor_system  # pylint: disable=unused-import
-from xmodule.tests.test_import import DummySystem
+from xmodule.tests.test_import import DummyModuleStoreRuntime
 from xmodule.tests.test_video import VideoBlockTestBase
 from xmodule.video_block import VideoBlock, bumper_utils, video_utils
 from xmodule.video_block.transcripts_utils import Transcript, save_to_store, subs_filename
@@ -1971,7 +1971,7 @@ def test_import_val_data_internal(self):
         Test that import val data internal works as expected.
         """
         create_profile('mobile')
-        module_system = DummySystem(load_error_blocks=True)
+        module_system = DummyModuleStoreRuntime(load_error_blocks=True)
 
         edx_video_id = 'test_edx_video_id'
         sub_id = '0CzPOIIdUsA'
@@ -2074,7 +2074,7 @@ def test_import_no_video_id(self):
         """
         xml_data = """<video><video_asset></video_asset></video>"""
         xml_object = etree.fromstring(xml_data)
-        module_system = DummySystem(load_error_blocks=True)
+        module_system = DummyModuleStoreRuntime(load_error_blocks=True)
 
         # Verify edx_video_id is empty before.
         assert self.block.edx_video_id == ''
@@ -2110,7 +2110,7 @@ def test_import_val_transcript(self):
             val_transcript_provider=val_transcript_provider
         )
         xml_object = etree.fromstring(xml_data)
-        module_system = DummySystem(load_error_blocks=True)
+        module_system = DummyModuleStoreRuntime(load_error_blocks=True)
 
         # Create static directory in import file system and place transcript files inside it.
         module_system.resources_fs.makedirs(EXPORT_IMPORT_STATIC_DIR, recreate=True)
@@ -2215,7 +2215,7 @@ def test_import_val_transcript_priority(self, sub_id, external_transcripts, val_
         edx_video_id = 'test_edx_video_id'
         language_code = 'en'
 
-        module_system = DummySystem(load_error_blocks=True)
+        module_system = DummyModuleStoreRuntime(load_error_blocks=True)
 
         # Create static directory in import file system and place transcript files inside it.
         module_system.resources_fs.makedirs(EXPORT_IMPORT_STATIC_DIR, recreate=True)
@@ -2283,7 +2283,7 @@ def test_import_val_transcript_priority(self, sub_id, external_transcripts, val_
 
     def test_import_val_data_invalid(self):
         create_profile('mobile')
-        module_system = DummySystem(load_error_blocks=True)
+        module_system = DummyModuleStoreRuntime(load_error_blocks=True)
 
         # Negative file_size is invalid
         xml_data = """

lms/djangoapps/lms_xblock/test/test_runtime.py

@@ -11,7 +11,7 @@
 from opaque_keys.edx.locations import BlockUsageLocator, CourseLocator
 from xblock.fields import ScopeIds
 
-from xmodule.x_module import DescriptorSystem
+from xmodule.x_module import ModuleStoreRuntime
 from lms.djangoapps.lms_xblock.runtime import handler_url
 
 
@@ -51,7 +51,7 @@ class TestHandlerUrl(TestCase):
     def setUp(self):
         super().setUp()
         self.block = BlockMock(name='block')
-        self.runtime = DescriptorSystem(
+        self.runtime = ModuleStoreRuntime(
             load_item=Mock(name='get_test_descriptor_system.load_item'),
             resources_fs=Mock(name='get_test_descriptor_system.resources_fs'),
             error_tracker=Mock(name='get_test_descriptor_system.error_tracker')

openedx/core/djangoapps/xblock/runtime/shims.py

@@ -157,7 +157,7 @@ def process_xml(self, xml):
         """
         # We can't parse XML in a vacuum - we need to know the parent block and/or the
         # OLX file that holds this XML in order to generate useful definition keys etc.
-        # The older ImportSystem runtime could do this because it stored the course_id
+        # The older XMLImportingModuleStoreRuntime runtime could do this because it stored the course_id
         # as part of the runtime.
         raise NotImplementedError("This newer runtime does not support process_xml()")
 
@@ -244,7 +244,7 @@ def xqueue(self):
 
     def get_field_provenance(self, xblock, field):
         """
-        A Studio-specific method that was implemented on DescriptorSystem.
+        A Studio-specific method that was implemented on ModuleStoreRuntime.
         Used by the problem block.
 
         For the given xblock, return a dict for the field's current state:

openedx/core/lib/tests/test_xblock_utils.py

@@ -177,7 +177,10 @@ def test_is_not_xblock_aside(self):
         """test if xblock is not aside"""
         assert is_xblock_aside(self.block.scope_ids.usage_id) is False
 
-    @patch('xmodule.modulestore.xml.ImportSystem.applicable_aside_types', lambda self, block: ['test_aside'])
+    @patch(
+        'xmodule.modulestore.xml.XMLImportingModuleStoreRuntime.applicable_aside_types',
+        lambda self, block: ['test_aside'],
+    )
     @XBlockAside.register_temp_plugin(AsideTestType, 'test_aside')
     def test_get_aside(self):
         """test get aside success"""

xmodule/capa/capa_problem.py

@@ -93,7 +93,7 @@ class LoncapaSystem(object):
         i18n: an object implementing the `gettext.Translations` interface so
             that we can use `.ugettext` to localize strings.
 
-    See :class:`DescriptorSystem` for documentation of other attributes.
+    See :class:`ModuleStoreRuntime` for documentation of other attributes.
 
     """
     def __init__(

xmodule/error_block.py

@@ -79,7 +79,7 @@ def _construct(cls, system, contents, error_msg, location, for_parent=None):
         Build a new ErrorBlock using ``system``.
 
         Arguments:
-            system (:class:`DescriptorSystem`): The :class:`DescriptorSystem` used
+            system (:class:`ModuleStoreRuntime`): The :class:`ModuleStoreRuntime` used
                 to construct the XBlock that had an error.
             contents (unicode): An encoding of the content of the xblock that had an error.
             error_msg (unicode): A message describing the error.

xmodule/mako_block.py

@@ -5,30 +5,7 @@
 
 from web_fragments.fragment import Fragment
 
-from .x_module import DescriptorSystem, shim_xmodule_js
-
-
-class MakoDescriptorSystem(DescriptorSystem):  # lint-amnesty, pylint: disable=abstract-method
-    """
-    Descriptor system that renders mako templates.
-    """
-    def __init__(self, render_template, **kwargs):
-        super().__init__(**kwargs)
-
-        self.render_template = render_template
-
-        # Add the MakoService to the runtime services.
-        # If it already exists, do not attempt to reinitialize it; otherwise, this could override the `namespace_prefix`
-        # of the `MakoService`, breaking template rendering in Studio.
-        #
-        # This is not needed by most XBlocks, because the MakoService is added to their runtimes.
-        # However, there are a few cases where the MakoService is not added to the XBlock's
-        # runtime. Specifically:
-        # * in the Instructor Dashboard bulk emails tab, when rendering the HtmlBlock for its WYSIWYG editor.
-        # * during testing, when fetching factory-created blocks.
-        if 'mako' not in self._services:
-            from common.djangoapps.edxmako.services import MakoService
-            self._services['mako'] = MakoService()
+from .x_module import shim_xmodule_js
 
 
 class MakoTemplateBlockBase: