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fix: demo course reindex fix (#37496) #37620

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fix: demo course reindex fix (#37496) #37620

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84 changes: 65 additions & 19 deletions cms/djangoapps/contentstore/courseware_index.py
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Original file line number Diff line number Diff line change
Expand Up @@ -187,19 +187,21 @@ def prepare_item_index(item, skip_index=False, groups_usage_info=None):

if item.category == "split_test": # lint-amnesty, pylint: disable=too-many-nested-blocks
split_partition = item.get_selected_partition()
for split_test_child in item.get_children():
if split_partition:
for group in split_partition.groups:
group_id = str(group.id)
child_location = item.group_id_to_child.get(group_id, None)
if child_location == split_test_child.location:
groups_usage_info.update({
str(get_item_location(split_test_child)): [group_id],
})
for component in split_test_child.get_children():
# Only process split_test groups if groups_usage_info is available
if groups_usage_info is not None:
for split_test_child in item.get_children():
if split_partition:
for group in split_partition.groups:
group_id = str(group.id)
child_location = item.group_id_to_child.get(group_id, None)
if child_location == split_test_child.location:
groups_usage_info.update({
str(get_item_location(component)): [group_id]
str(get_item_location(split_test_child)): [group_id],
})
for component in split_test_child.get_children():
groups_usage_info.update({
str(get_item_location(component)): [group_id]
})

if groups_usage_info:
item_location = get_item_location(item)
Expand Down Expand Up @@ -248,14 +250,47 @@ def prepare_item_index(item, skip_index=False, groups_usage_info=None):
try:
with modulestore.branch_setting(ModuleStoreEnum.RevisionOption.published_only):
structure = cls._fetch_top_level(modulestore, structure_key)
groups_usage_info = cls.fetch_group_usage(modulestore, structure)
if structure is None:
log.warning(
"Course structure not found for indexing %s - skipping index",
structure_key
)
return 0
try:
groups_usage_info = cls.fetch_group_usage(modulestore, structure)
except Exception as group_err: # pylint: disable=broad-except
log.warning(
"Could not fetch group usage info for course %s - continuing without groups: %r",
structure_key,
group_err
)
groups_usage_info = None

# First perform any additional indexing from the structure object
cls.supplemental_index_information(modulestore, structure)
# Wrap in try-except to handle demo courses that might have missing metadata
try:
cls.supplemental_index_information(modulestore, structure)
except Exception as supp_err: # pylint: disable=broad-except
log.warning(
"Supplemental indexing failed for %s - continuing with content indexing: %r",
structure_key,
supp_err
)

# Now index the content
for item in structure.get_children():
prepare_item_index(item, groups_usage_info=groups_usage_info)
# Handle cases where get_children() might fail or return None
try:
children = structure.get_children()
if children is not None:
for item in children:
prepare_item_index(item, groups_usage_info=groups_usage_info)
except Exception as children_err: # pylint: disable=broad-except
log.warning(
"Error getting children for course %s - some content may not be indexed: %r",
structure_key,
children_err
)

if items_index:
searcher.index(items_index, request_timeout=timeout)
cls.remove_deleted_items(searcher, structure_key, indexed_items)
Expand Down Expand Up @@ -616,10 +651,21 @@ def index_about_information(cls, modulestore, course):
}

# load data for all of the 'about' blocks for this course into a dictionary
about_dictionary = {
item.location.block_id: item.data
for item in modulestore.get_items(course.id, qualifiers={"category": "about"})
}
# Handle demo courses that might not have about blocks yet
try:
about_items = modulestore.get_items(course.id, qualifiers={"category": "about"})
about_dictionary = {
item.location.block_id: item.data
for item in about_items
}
except Exception as about_err: # pylint: disable=broad-except
# Demo courses may not have about blocks initialized yet
log.warning(
"Could not load about blocks for course %s - continuing with empty about dictionary: %r",
course_id,
about_err
)
about_dictionary = {}

about_context = {
"course": course,
Expand Down
204 changes: 204 additions & 0 deletions cms/djangoapps/contentstore/tests/test_courseware_index.py
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Original file line number Diff line number Diff line change
Expand Up @@ -509,6 +509,210 @@ def test_empty_course(self):
added_to_index = CoursewareSearchIndexer.do_course_reindex(self.store, empty_course.id)
assert added_to_index == 0

def test_demo_course_reindexing(self):
"""
Test that demo courses can be reindexed successfully without errors.

This test verifies fix for issue #37496 where demo course reindexing fails.
Demo courses may have missing metadata or incomplete structure, but indexing
should still complete successfully.
"""
# Create a demo course with typical demo course structure
# Demo courses typically have org="edX", course="DemoX", run="Demo_Course"
demo_course = CourseFactory.create(
modulestore=self.store,
org="edX",
course="DemoX",
run="Demo_Course",
start=datetime(2015, 3, 1, tzinfo=UTC),
display_name="Demo Course"
)

# Add some content to the demo course
chapter = BlockFactory.create(
parent_location=demo_course.location,
category='chapter',
display_name="Demo Chapter",
modulestore=self.store,
publish_item=True,
start=datetime(2015, 3, 1, tzinfo=UTC),
)
sequential = BlockFactory.create(
parent_location=chapter.location,
category='sequential',
display_name="Demo Sequential",
modulestore=self.store,
publish_item=True,
start=datetime(2015, 3, 1, tzinfo=UTC),
)
vertical = BlockFactory.create(
parent_location=sequential.location,
category='vertical',
display_name="Demo Vertical",
modulestore=self.store,
publish_item=True,
start=datetime(2015, 4, 1, tzinfo=UTC),
)
html_unit = BlockFactory.create(
parent_location=vertical.location,
category="html",
display_name="Demo Content",
modulestore=self.store,
publish_item=True,
)

# Reindex the demo course - this should complete without errors
# even if some metadata is missing
try:
added_to_index = CoursewareSearchIndexer.do_course_reindex(self.store, demo_course.id)
# Verify that indexing completed successfully
self.assertIsNotNone(added_to_index)
self.assertGreaterEqual(added_to_index, 0)

# Verify that the course content was indexed
response = self.search(field_dictionary={"course": str(demo_course.id)})
# Should have at least the published blocks indexed
self.assertGreaterEqual(response["total"], 3)

# Verify that specific blocks are in the index
indexed_ids = [result["data"]["id"] for result in response["results"]]
self.assertIn(str(chapter.location), indexed_ids)
self.assertIn(str(sequential.location), indexed_ids)
self.assertIn(str(vertical.location), indexed_ids)
self.assertIn(str(html_unit.location), indexed_ids)

except SearchIndexingError as e:
# If indexing fails, that's the bug we're fixing
self.fail(f"Demo course reindexing failed with SearchIndexingError: {e}")
except Exception as e:
# Any other exception is also a failure
self.fail(f"Demo course reindexing failed with exception: {e}")

def test_demo_course_reindexing_with_missing_metadata(self):
"""
Test that demo courses can be reindexed even when metadata is missing.

This test simulates the scenario where demo courses might have missing
about blocks or other metadata that could cause indexing to fail.
"""
# Create a demo course
demo_course = CourseFactory.create(
modulestore=self.store,
org="edX",
course="DemoX",
run="Demo_Course",
start=datetime(2015, 3, 1, tzinfo=UTC),
display_name="Demo Course"
)

# Add minimal content
chapter = BlockFactory.create(
parent_location=demo_course.location,
category='chapter',
display_name="Demo Chapter",
modulestore=self.store,
publish_item=True,
start=datetime(2015, 3, 1, tzinfo=UTC),
)

# Mock get_items to simulate missing about blocks (common in demo courses)
# This simulates the scenario where about blocks haven't been initialized yet
original_get_items = self.store.get_items

def mock_get_items(course_id, qualifiers=None):
# If querying for about blocks, return empty list (simulating missing blocks)
if qualifiers and qualifiers.get("category") == "about":
return []
# Otherwise, use the original method
return original_get_items(course_id, qualifiers=qualifiers)

# Test that indexing still works even with missing about blocks
with patch.object(self.store, 'get_items', side_effect=mock_get_items):
try:
added_to_index = CoursewareSearchIndexer.do_course_reindex(self.store, demo_course.id)
# Verify that indexing completed successfully despite missing metadata
self.assertIsNotNone(added_to_index)
self.assertGreaterEqual(added_to_index, 0)

# Verify that the course content was still indexed
response = self.search(field_dictionary={"course": str(demo_course.id)})
self.assertGreaterEqual(response["total"], 1)

except SearchIndexingError as e:
# If indexing fails, that's the bug we're fixing
self.fail(f"Demo course reindexing with missing metadata failed with SearchIndexingError: {e}")
except Exception as e:
# Any other exception is also a failure
self.fail(f"Demo course reindexing with missing metadata failed with exception: {e}")

def test_normal_course_indexing_unaffected(self):
"""
Test that normal course indexing is unaffected by the demo course fixes.

This test verifies that the error handling added for demo courses doesn't
break normal course indexing functionality.
"""
# Create a normal course (not a demo course)
normal_course = CourseFactory.create(
modulestore=self.store,
org="TestOrg",
course="TestCourse",
run="TestRun",
start=datetime(2015, 3, 1, tzinfo=UTC),
display_name="Normal Test Course"
)

# Add content to the normal course
chapter = BlockFactory.create(
parent_location=normal_course.location,
category='chapter',
display_name="Test Chapter",
modulestore=self.store,
publish_item=True,
start=datetime(2015, 3, 1, tzinfo=UTC),
)
sequential = BlockFactory.create(
parent_location=chapter.location,
category='sequential',
display_name="Test Sequential",
modulestore=self.store,
publish_item=True,
start=datetime(2015, 3, 1, tzinfo=UTC),
)
vertical = BlockFactory.create(
parent_location=sequential.location,
category='vertical',
display_name="Test Vertical",
modulestore=self.store,
publish_item=True,
start=datetime(2015, 4, 1, tzinfo=UTC),
)
html_unit = BlockFactory.create(
parent_location=vertical.location,
category="html",
display_name="Test Content",
modulestore=self.store,
publish_item=True,
)

# Reindex the normal course - should work exactly as before
added_to_index = CoursewareSearchIndexer.do_course_reindex(self.store, normal_course.id)

# Verify that indexing completed successfully
self.assertIsNotNone(added_to_index)
self.assertGreaterEqual(added_to_index, 3)

# Verify that the course content was indexed
response = self.search(field_dictionary={"course": str(normal_course.id)})
self.assertGreaterEqual(response["total"], 3)

# Verify that specific blocks are in the index
indexed_ids = [result["data"]["id"] for result in response["results"]]
self.assertIn(str(chapter.location), indexed_ids)
self.assertIn(str(sequential.location), indexed_ids)
self.assertIn(str(vertical.location), indexed_ids)
self.assertIn(str(html_unit.location), indexed_ids)


@patch('django.conf.settings.SEARCH_ENGINE', 'search.tests.utils.ForceRefreshElasticSearchEngine')
@ddt.ddt
Expand Down