def create_modulestore_instance(
engine,
content_store,
doc_store_config,
options,
i18n_service=None,
fs_service=None,
user_service=None,
signal_handler=None,
):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ['render_template']
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache('mongo_metadata_inheritance')
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache('default')
if issubclass(class_, MixedModuleStore):
_options['create_modulestore_instance'] = create_modulestore_instance
if issubclass(class_, BranchSettingMixin):
_options['branch_setting_func'] = _get_modulestore_branch_setting
if HAS_USER_SERVICE and not user_service:
xb_user_service = DjangoXBlockUserService(get_current_user())
else:
xb_user_service = None
if 'read_preference' in doc_store_config:
doc_store_config['read_preference'] = getattr(
ReadPreference, doc_store_config['read_preference'])
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, 'XBLOCK_MIXINS', ()),
xblock_select=getattr(settings, 'XBLOCK_SELECT_FUNCTION', None),
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
fs_service=fs_service or xblock.reference.plugins.FSService(),
user_service=user_service or xb_user_service,
signal_handler=signal_handler or SignalHandler(class_),
**_options)
def handle(self, *args, **options):
"Execute the command"
if len(args) != 2:
raise CommandError("clone requires two arguments: <source-course_id> <dest-course_id>")
source_course_id = args[0]
dest_course_id = args[1]
mstore = modulestore('direct')
cstore = contentstore()
mstore.metadata_inheritance_cache_subsystem = CACHE
mstore.request_cache = RequestCache.get_request_cache()
org, course_num, run = dest_course_id.split("/")
mstore.ignore_write_events_on_courses.append('{0}/{1}'.format(org, course_num))
print("Cloning course {0} to {1}".format(source_course_id, dest_course_id))
source_location = CourseDescriptor.id_to_location(source_course_id)
dest_location = CourseDescriptor.id_to_location(dest_course_id)
if clone_course(mstore, cstore, source_location, dest_location):
# be sure to recompute metadata inheritance after all those updates
mstore.refresh_cached_metadata_inheritance_tree(dest_location)
print("copying User permissions...")
_copy_course_group(source_location, dest_location)
def get_template_request_context():
"""
Returns the template processing context to use for the current request,
or returns None if there is not a current request.
"""
request = getattr(REQUEST_CONTEXT, "request", None)
if not request:
return None
request_cache_dict = RequestCache.get_request_cache().data
cache_key = "edxmako_request_context"
if cache_key in request_cache_dict:
return request_cache_dict[cache_key]
context = RequestContext(request)
context['is_secure'] = request.is_secure()
context['site'] = safe_get_host(request)
# This used to happen when a RequestContext object was initialized but was
# moved to a different part of the logic when template engines were introduced.
# Since we are not using template engines we do this here.
# https://github.com/django/django/commit/37505b6397058bcc3460f23d48a7de9641cd6ef0
for processor in get_template_context_processors():
context.update(processor(request))
request_cache_dict[cache_key] = context
return context
def create_modulestore_instance(engine, options):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache('mongo_metadata_inheritance')
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache('default')
return class_(
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
modulestore_update_signal=Signal(
providing_args=['modulestore', 'course_id', 'location']),
**_options)
def check_team_member(user, content):
"""
If the content has a commentable_id, verifies that either it is not associated with a team,
or if it is, that the user is a member of that team.
"""
if not content:
return False
try:
commentable_id = content['commentable_id']
request_cache_dict = RequestCache.get_request_cache().data
cache_key = "django_comment_client.check_team_member.{}.{}".format(
user.id, commentable_id)
if cache_key in request_cache_dict:
return request_cache_dict[cache_key]
team = get_team(commentable_id)
if team is None:
passes_condition = True
else:
passes_condition = team.users.filter(id=user.id).exists()
request_cache_dict[cache_key] = passes_condition
except KeyError:
# We do not expect KeyError in production-- it usually indicates an improper test mock.
logging.warning("Did not find key commentable_id in content.")
passes_condition = False
return passes_condition
def get_template_request_context():
"""
Returns the template processing context to use for the current request,
or returns None if there is not a current request.
"""
request = getattr(REQUEST_CONTEXT, "request", None)
if not request:
return None
request_cache_dict = RequestCache.get_request_cache().data
cache_key = "edxmako_request_context"
if cache_key in request_cache_dict:
return request_cache_dict[cache_key]
context = RequestContext(request)
context['is_secure'] = request.is_secure()
context['site'] = safe_get_host(request)
# This used to happen when a RequestContext object was initialized but was
# moved to a different part of the logic when template engines were introduced.
# Since we are not using template engines we do this here.
# https://github.com/django/django/commit/37505b6397058bcc3460f23d48a7de9641cd6ef0
for processor in get_template_context_processors():
context.update(processor(request))
request_cache_dict[cache_key] = context
return context
def create_modulestore_instance(engine, options):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache('mongo_metadata_inheritance')
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache('default')
return class_(
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
modulestore_update_signal=Signal(providing_args=['modulestore', 'course_id', 'location']),
**_options
)
def handle(self, *args, **options):
if len(args) != 1 and len(args) != 2:
raise CommandError("delete_course requires one or more arguments: <location> |commit|")
course_id = args[0]
commit = False
if len(args) == 2:
commit = args[1] == 'commit'
if commit:
print 'Actually going to delete the course from DB....'
ms = modulestore('direct')
cs = contentstore()
ms.metadata_inheritance_cache_subsystem = CACHE
ms.request_cache = RequestCache.get_request_cache()
org, course_num, run = course_id.split("/")
ms.ignore_write_events_on_courses.append('{0}/{1}'.format(org, course_num))
if query_yes_no("Deleting course {0}. Confirm?".format(course_id), default="no"):
if query_yes_no("Are you sure. This action cannot be undone!", default="no"):
loc = CourseDescriptor.id_to_location(course_id)
if delete_course(ms, cs, loc, commit):
print 'removing User permissions from course....'
# in the django layer, we need to remove all the user permissions groups associated with this course
if commit:
_delete_course_group(loc)
def get_group_info_for_cohort(cohort, use_cached=False):
"""
Get the ids of the group and partition to which this cohort has been linked
as a tuple of (int, int).
If the cohort has not been linked to any group/partition, both values in the
tuple will be None.
The partition group info is cached for the duration of a request. Pass
use_cached=True to use the cached value instead of fetching from the
database.
"""
request_cache = RequestCache.get_request_cache()
cache_key = u"cohorts.get_group_info_for_cohort.{}".format(cohort.id)
if use_cached and cache_key in request_cache.data:
return request_cache.data[cache_key]
request_cache.data.pop(cache_key, None)
try:
partition_group = CourseUserGroupPartitionGroup.objects.get(course_user_group=cohort)
return request_cache.data.setdefault(cache_key, (partition_group.group_id, partition_group.partition_id))
except CourseUserGroupPartitionGroup.DoesNotExist:
pass
return request_cache.data.setdefault(cache_key, (None, None))
def get_group_info_for_cohort(cohort, use_cached=False):
"""
Get the ids of the group and partition to which this cohort has been linked
as a tuple of (int, int).
If the cohort has not been linked to any group/partition, both values in the
tuple will be None.
The partition group info is cached for the duration of a request. Pass
use_cached=True to use the cached value instead of fetching from the
database.
"""
request_cache = RequestCache.get_request_cache()
cache_key = u"cohorts.get_group_info_for_cohort.{}".format(cohort.id)
if use_cached and cache_key in request_cache.data:
return request_cache.data[cache_key]
request_cache.data.pop(cache_key, None)
try:
partition_group = CourseUserGroupPartitionGroup.objects.get(
course_user_group=cohort)
return request_cache.data.setdefault(
cache_key,
(partition_group.group_id, partition_group.partition_id))
except CourseUserGroupPartitionGroup.DoesNotExist:
pass
return request_cache.data.setdefault(cache_key, (None, None))
def create_modulestore_instance(engine, doc_store_config, options, i18n_service=None):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache('mongo_metadata_inheritance')
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache('default')
return class_(
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
modulestore_update_signal=Signal(providing_args=['modulestore', 'course_id', 'location']),
xblock_mixins=getattr(settings, 'XBLOCK_MIXINS', ()),
xblock_select=getattr(settings, 'XBLOCK_SELECT_FUNCTION', None),
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
**_options
)
def create_modulestore_instance(
engine,
content_store,
doc_store_config,
options,
i18n_service=None,
fs_service=None,
user_service=None,
signal_handler=None,
):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ["render_template"]
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache("mongo_metadata_inheritance")
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache("default")
if issubclass(class_, MixedModuleStore):
_options["create_modulestore_instance"] = create_modulestore_instance
if issubclass(class_, BranchSettingMixin):
_options["branch_setting_func"] = _get_modulestore_branch_setting
if HAS_USER_SERVICE and not user_service:
xb_user_service = DjangoXBlockUserService(get_current_user())
else:
xb_user_service = None
if "read_preference" in doc_store_config:
doc_store_config["read_preference"] = getattr(ReadPreference, doc_store_config["read_preference"])
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, "XBLOCK_MIXINS", ()),
xblock_select=getattr(settings, "XBLOCK_SELECT_FUNCTION", None),
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
fs_service=fs_service or xblock.reference.plugins.FSService(),
user_service=user_service or xb_user_service,
signal_handler=signal_handler or SignalHandler(class_),
**_options
)
def handle(self, *args, **options):
if len(args) != 1:
raise CommandError("check_course requires one argument: <location>")
loc_str = args[0]
loc = CourseDescriptor.id_to_location(loc_str)
store = modulestore()
# setup a request cache so we don't throttle the DB with all the metadata inheritance requests
store.set_modulestore_configuration({
'metadata_inheritance_cache_subsystem': CACHE,
'request_cache': RequestCache.get_request_cache()
})
course = store.get_item(loc, depth=3)
err_cnt = 0
def _xlint_metadata(module):
err_cnt = check_module_metadata_editability(module)
for child in module.get_children():
err_cnt = err_cnt + _xlint_metadata(child)
return err_cnt
err_cnt = err_cnt + _xlint_metadata(course)
# we've had a bug where the xml_attributes field can we rewritten as a string rather than a dict
def _check_xml_attributes_field(module):
err_cnt = 0
if hasattr(module, 'xml_attributes') and isinstance(module.xml_attributes, basestring):
print 'module = {0} has xml_attributes as a string. It should be a dict'.format(module.location.url())
err_cnt = err_cnt + 1
for child in module.get_children():
err_cnt = err_cnt + _check_xml_attributes_field(child)
return err_cnt
err_cnt = err_cnt + _check_xml_attributes_field(course)
# check for dangling discussion items, this can cause errors in the forums
def _get_discussion_items(module):
discussion_items = []
if module.location.category == 'discussion':
discussion_items = discussion_items + [module.location.url()]
for child in module.get_children():
discussion_items = discussion_items + _get_discussion_items(child)
return discussion_items
discussion_items = _get_discussion_items(course)
# now query all discussion items via get_items() and compare with the tree-traversal
queried_discussion_items = store.get_items(['i4x', course.location.org, course.location.course,
'discussion', None, None])
for item in queried_discussion_items:
if item.location.url() not in discussion_items:
print 'Found dangling discussion module = {0}'.format(item.location.url())
def _enable_storage(self):
"""
Enables storage backing by setting the waffle's cached value to True.
"""
cache_key = func_call_cache_key(
is_switch_enabled.request_cached_contained_func,
_bs_waffle_switch_name(STORAGE_BACKING_FOR_CACHE),
)
RequestCache.get_request_cache().data[cache_key] = True
log.warning(u'STORAGE_BACKING_FOR_CACHE is enabled.')
def get_cohort(user, course_key, assign=True, use_cached=False):
"""Returns the user's cohort for the specified course.
The cohort for the user is cached for the duration of a request. Pass
use_cached=True to use the cached value instead of fetching from the
database.
Arguments:
user: a Django User object.
course_key: CourseKey
assign (bool): if False then we don't assign a group to user
use_cached (bool): Whether to use the cached value or fetch from database.
Returns:
A CourseUserGroup object if the course is cohorted and the User has a
cohort, else None.
Raises:
ValueError if the CourseKey doesn't exist.
"""
request_cache = RequestCache.get_request_cache()
cache_key = u"cohorts.get_cohort.{}.{}".format(user.id, course_key)
if use_cached and cache_key in request_cache.data:
return request_cache.data[cache_key]
request_cache.data.pop(cache_key, None)
# First check whether the course is cohorted (users shouldn't be in a cohort
# in non-cohorted courses, but settings can change after course starts)
course_cohort_settings = get_course_cohort_settings(course_key)
if not course_cohort_settings.is_cohorted:
return request_cache.data.setdefault(cache_key, None)
# If course is cohorted, check if the user already has a cohort.
try:
membership = CohortMembership.objects.get(
course_id=course_key,
user_id=user.id,
)
return request_cache.data.setdefault(cache_key, membership.course_user_group)
except CohortMembership.DoesNotExist:
# Didn't find the group. If we do not want to assign, return here.
if not assign:
# Do not cache the cohort here, because in the next call assign
# may be True, and we will have to assign the user a cohort.
return None
# Otherwise assign the user a cohort.
membership = CohortMembership.objects.create(
user=user,
course_user_group=get_random_cohort(course_key)
)
return request_cache.data.setdefault(cache_key, membership.course_user_group)
def get_cohort(user, course_key, assign=True, use_cached=False):
"""Returns the user's cohort for the specified course.
The cohort for the user is cached for the duration of a request. Pass
use_cached=True to use the cached value instead of fetching from the
database.
Arguments:
user: a Django User object.
course_key: CourseKey
assign (bool): if False then we don't assign a group to user
use_cached (bool): Whether to use the cached value or fetch from database.
Returns:
A CourseUserGroup object if the course is cohorted and the User has a
cohort, else None.
Raises:
ValueError if the CourseKey doesn't exist.
"""
request_cache = RequestCache.get_request_cache()
cache_key = u"cohorts.get_cohort.{}.{}".format(user.id, course_key)
if use_cached and cache_key in request_cache.data:
return request_cache.data[cache_key]
request_cache.data.pop(cache_key, None)
# First check whether the course is cohorted (users shouldn't be in a cohort
# in non-cohorted courses, but settings can change after course starts)
course_cohort_settings = get_course_cohort_settings(course_key)
if not course_cohort_settings.is_cohorted:
return request_cache.data.setdefault(cache_key, None)
# If course is cohorted, check if the user already has a cohort.
try:
membership = CohortMembership.objects.get(
course_id=course_key,
user_id=user.id,
)
return request_cache.data.setdefault(cache_key,
membership.course_user_group)
except CohortMembership.DoesNotExist:
# Didn't find the group. If we do not want to assign, return here.
if not assign:
# Do not cache the cohort here, because in the next call assign
# may be True, and we will have to assign the user a cohort.
return None
# Otherwise assign the user a cohort.
membership = CohortMembership.objects.create(
user=user, course_user_group=get_random_cohort(course_key))
return request_cache.data.setdefault(cache_key,
membership.course_user_group)
def has_permission(user, permission, course_id=None):
assert isinstance(course_id, (NoneType, CourseKey))
request_cache_dict = RequestCache.get_request_cache().data
cache_key = "django_comment_client.permissions.has_permission.all_permissions.{}.{}".format(
user.id, course_id)
if cache_key in request_cache_dict:
all_permissions = request_cache_dict[cache_key]
else:
all_permissions = all_permissions_for_user_in_course(user, course_id)
request_cache_dict[cache_key] = all_permissions
return permission in all_permissions
def enable_for_current_request(setting_name):
"""
Enables the given block_structure setting for the
duration of the current request.
"""
cache_key = func_call_cache_key(
is_switch_enabled.request_cached_contained_func,
_bs_waffle_switch_name(setting_name),
)
RequestCache.get_request_cache().data[cache_key] = True
log.warning(u'BlockStructure: Config %s is enabled for current request.',
setting_name)
def _bookmarks_cache(self, course_key, fetch=False):
"""
Return the user's bookmarks cache for a particular course.
Arguments:
course_key (CourseKey): course_key of the course whose bookmarks cache should be returned.
fetch (Bool): if the bookmarks should be fetched and cached if they already aren't.
"""
store = modulestore()
course_key = store.fill_in_run(course_key)
if course_key.run is None:
return []
cache_key = CACHE_KEY_TEMPLATE.format(self._user.id, course_key)
bookmarks_cache = RequestCache.get_request_cache().data.get(cache_key, None)
if bookmarks_cache is None and fetch is True:
bookmarks_cache = api.get_bookmarks(
self._user, course_key=course_key, fields=DEFAULT_FIELDS
)
RequestCache.get_request_cache().data[cache_key] = bookmarks_cache
return bookmarks_cache
def has_permission(user, permission, course_id=None):
assert isinstance(course_id, (NoneType, CourseKey))
request_cache_dict = RequestCache.get_request_cache().data
cache_key = "django_comment_client.permissions.has_permission.all_permissions.{}.{}".format(
user.id, course_id
)
if cache_key in request_cache_dict:
all_permissions = request_cache_dict[cache_key]
else:
all_permissions = all_permissions_for_user_in_course(user, course_id)
request_cache_dict[cache_key] = all_permissions
return permission in all_permissions
def __init__(self, **kwargs):
request_cache_dict = RequestCache.get_request_cache().data
services = kwargs.setdefault('services', {})
services['user_tags'] = UserTagsService(self)
services['partitions'] = LmsPartitionService(
user=kwargs.get('user'),
course_id=kwargs.get('course_id'),
track_function=kwargs.get('track_function', None),
cache=request_cache_dict)
services['library_tools'] = LibraryToolsService(modulestore())
services['fs'] = xblock.reference.plugins.FSService()
services['settings'] = SettingsService()
self.request_token = kwargs.pop('request_token', None)
super(LmsModuleSystem, self).__init__(**kwargs)
def get_team(commentable_id):
""" Returns the team that the commentable_id belongs to if it exists. Returns None otherwise. """
request_cache_dict = RequestCache.get_request_cache().data
cache_key = "django_comment_client.team_commentable.{}".format(commentable_id)
if cache_key in request_cache_dict:
return request_cache_dict[cache_key]
try:
team = CourseTeam.objects.get(discussion_topic_id=commentable_id)
except CourseTeam.DoesNotExist:
team = None
request_cache_dict[cache_key] = team
return team
def get_team(commentable_id):
""" Returns the team that the commentable_id belongs to if it exists. Returns None otherwise. """
request_cache_dict = RequestCache.get_request_cache().data
cache_key = u"django_comment_client.team_commentable.{}".format(commentable_id)
if cache_key in request_cache_dict:
return request_cache_dict[cache_key]
try:
team = CourseTeam.objects.get(discussion_topic_id=commentable_id)
except CourseTeam.DoesNotExist:
team = None
request_cache_dict[cache_key] = team
return team
def __init__(self, **kwargs):
request_cache_dict = RequestCache.get_request_cache().data
services = kwargs.setdefault('services', {})
services['user_tags'] = UserTagsService(self)
services['partitions'] = LmsPartitionService(
user=kwargs.get('user'),
course_id=kwargs.get('course_id'),
track_function=kwargs.get('track_function', None),
cache=request_cache_dict
)
services['library_tools'] = LibraryToolsService(modulestore())
services['fs'] = xblock.reference.plugins.FSService()
services['settings'] = SettingsService()
self.request_token = kwargs.pop('request_token', None)
super(LmsModuleSystem, self).__init__(**kwargs)
def __init__(self, **kwargs):
request_cache_dict = RequestCache.get_request_cache().data
services = kwargs.setdefault('services', {})
services['fs'] = xblock.reference.plugins.FSService()
services['i18n'] = ModuleI18nService
services['library_tools'] = LibraryToolsService(modulestore())
services['partitions'] = PartitionService(
course_id=kwargs.get('course_id'), cache=request_cache_dict)
store = modulestore()
services['settings'] = SettingsService()
services['user_tags'] = UserTagsService(self)
if badges_enabled():
services['badging'] = BadgingService(
course_id=kwargs.get('course_id'), modulestore=store)
self.request_token = kwargs.pop('request_token', None)
super(LmsModuleSystem, self).__init__(**kwargs)
def __init__(self, **kwargs):
request_cache_dict = RequestCache.get_request_cache().data
services = kwargs.setdefault('services', {})
services['fs'] = xblock.reference.plugins.FSService()
services['i18n'] = ModuleI18nService
services['library_tools'] = LibraryToolsService(modulestore())
services['partitions'] = PartitionService(
course_id=kwargs.get('course_id'),
cache=request_cache_dict
)
store = modulestore()
services['settings'] = SettingsService()
services['user_tags'] = UserTagsService(self)
if badges_enabled():
services['badging'] = BadgingService(course_id=kwargs.get('course_id'), modulestore=store)
self.request_token = kwargs.pop('request_token', None)
super(LmsModuleSystem, self).__init__(**kwargs)
def handle(self, *args, **options):
if len(args) != 1 and len(args) != 2:
raise CommandError(
"delete_course requires one or more arguments: <location> |commit|"
)
course_id = args[0]
commit = False
if len(args) == 2:
commit = args[1] == 'commit'
if commit:
print 'Actually going to delete the course from DB....'
ms = modulestore('direct')
cs = contentstore()
ms.set_modulestore_configuration({
'metadata_inheritance_cache_subsystem':
CACHE,
'request_cache':
RequestCache.get_request_cache()
})
org, course_num, run = course_id.split("/")
ms.ignore_write_events_on_courses.append('{0}/{1}'.format(
org, course_num))
if query_yes_no("Deleting course {0}. Confirm?".format(course_id),
default="no"):
if query_yes_no("Are you sure. This action cannot be undone!",
default="no"):
loc = CourseDescriptor.id_to_location(course_id)
if delete_course(ms, cs, loc, commit):
print 'removing User permissions from course....'
# in the django layer, we need to remove all the user permissions groups associated with this course
if commit:
try:
_delete_course_group(loc)
except Exception as err:
print(
"Error in deleting course groups for {0}: {1}".
format(loc, err))
def _providers_for_course(cls, course):
"""
Return a filtered list of enabled providers based
on the course passed in. Cache this result per request to avoid
needing to call the provider filter api hundreds of times.
Arguments:
course: The course XBlock
"""
request_cache = RequestCache.get_request_cache()
enabled_providers = request_cache.data.get(
ENABLED_OVERRIDE_PROVIDERS_KEY, NOTSET
)
if enabled_providers == NOTSET:
enabled_providers = tuple(
(provider_class for provider_class in cls.provider_classes if provider_class.enabled_for(course))
)
request_cache.data[ENABLED_OVERRIDE_PROVIDERS_KEY] = enabled_providers
return enabled_providers
def create_modulestore_instance(engine, content_store, doc_store_config, options, i18n_service=None, fs_service=None):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ['render_template']
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache('mongo_metadata_inheritance')
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache('default')
if issubclass(class_, MixedModuleStore):
_options['create_modulestore_instance'] = create_modulestore_instance
if issubclass(class_, BranchSettingMixin):
_options['branch_setting_func'] = _get_modulestore_branch_setting
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, 'XBLOCK_MIXINS', ()),
xblock_select=getattr(settings, 'XBLOCK_SELECT_FUNCTION', None),
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
fs_service=fs_service or xblock.reference.plugins.FSService(),
**_options
)
def create_modulestore_instance(engine,
content_store,
doc_store_config,
options,
i18n_service=None,
fs_service=None):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ['render_template']
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache('mongo_metadata_inheritance')
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache('default')
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, 'XBLOCK_MIXINS', ()),
xblock_select=getattr(settings, 'XBLOCK_SELECT_FUNCTION', None),
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
fs_service=fs_service or xblock.reference.plugins.FSService(),
branch_setting_func=_get_modulestore_branch_setting,
create_modulestore_instance=create_modulestore_instance,
**_options)
def _providers_for_block(cls, block):
"""
Computes a list of enabled providers based on the given XBlock.
The result is cached per request to avoid the overhead incurred
by filtering override providers hundreds of times.
Arguments:
block: An XBlock
"""
course_id = unicode(block.location.course_key)
cache_key = ENABLED_MODULESTORE_OVERRIDE_PROVIDERS_KEY.format(course_id=course_id)
request_cache = RequestCache.get_request_cache()
enabled_providers = request_cache.data.get(cache_key)
if enabled_providers is None:
enabled_providers = [
provider_class for provider_class in cls.provider_classes if provider_class.enabled_for(block)
]
request_cache.data[cache_key] = enabled_providers
return enabled_providers
def _providers_for_block(cls, block):
"""
Computes a list of enabled providers based on the given XBlock.
The result is cached per request to avoid the overhead incurred
by filtering override providers hundreds of times.
Arguments:
block: An XBlock
"""
course_id = unicode(block.location.course_key)
cache_key = ENABLED_MODULESTORE_OVERRIDE_PROVIDERS_KEY.format(course_id=course_id)
request_cache = RequestCache.get_request_cache()
enabled_providers = request_cache.data.get(cache_key)
if enabled_providers is None:
enabled_providers = [
provider_class for provider_class in cls.provider_classes if provider_class.enabled_for(block)
]
request_cache.data[cache_key] = enabled_providers
return enabled_providers
def create_modulestore_instance(engine, content_store, doc_store_config, options, i18n_service=None):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ["render_template"]
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = get_cache("mongo_metadata_inheritance")
except InvalidCacheBackendError:
metadata_inheritance_cache = get_cache("default")
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, "XBLOCK_MIXINS", ()),
xblock_select=getattr(settings, "XBLOCK_SELECT_FUNCTION", None),
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
branch_setting_func=_get_modulestore_branch_setting,
create_modulestore_instance=create_modulestore_instance,
**_options
)
def check_team_member(user, content):
"""
If the content has a commentable_id, verifies that either it is not associated with a team,
or if it is, that the user is a member of that team.
"""
if not content:
return False
try:
commentable_id = content['commentable_id']
request_cache_dict = RequestCache.get_request_cache().data
cache_key = u"django_comment_client.check_team_member.{}.{}".format(user.id, commentable_id)
if cache_key in request_cache_dict:
return request_cache_dict[cache_key]
team = get_team(commentable_id)
if team is None:
passes_condition = True
else:
passes_condition = team.users.filter(id=user.id).exists()
request_cache_dict[cache_key] = passes_condition
except KeyError:
# We do not expect KeyError in production-- it usually indicates an improper test mock.
logging.warning("Did not find key commentable_id in content.")
passes_condition = False
return passes_condition
def _clear_cache(self):
"""
Clears the requestcached values on the is_switch_enabled function.
"""
cache_key = func_call_cache_key(is_switch_enabled.request_cached_contained_func, self.name)
RequestCache.get_request_cache().data.pop(cache_key, None)
def create_modulestore_instance(
engine,
content_store,
doc_store_config,
options,
i18n_service=None,
fs_service=None,
user_service=None,
signal_handler=None,
):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ['render_template']
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = caches['mongo_metadata_inheritance']
except InvalidCacheBackendError:
metadata_inheritance_cache = caches['default']
if issubclass(class_, MixedModuleStore):
_options['create_modulestore_instance'] = create_modulestore_instance
if issubclass(class_, BranchSettingMixin):
_options['branch_setting_func'] = _get_modulestore_branch_setting
if HAS_USER_SERVICE and not user_service:
xb_user_service = DjangoXBlockUserService(get_current_user())
else:
xb_user_service = None
if 'read_preference' in doc_store_config:
doc_store_config['read_preference'] = getattr(
ReadPreference, doc_store_config['read_preference'])
if XBlockDisableConfig and settings.FEATURES.get(
'ENABLE_DISABLING_XBLOCK_TYPES', False):
disabled_xblock_types = XBlockDisableConfig.disabled_block_types()
else:
disabled_xblock_types = ()
xblock_field_data_wrappers = [
load_function(path) for path in settings.XBLOCK_FIELD_DATA_WRAPPERS
]
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, 'XBLOCK_MIXINS', ()),
xblock_select=getattr(settings, 'XBLOCK_SELECT_FUNCTION', None),
xblock_field_data_wrappers=xblock_field_data_wrappers,
disabled_xblock_types=disabled_xblock_types,
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
fs_service=fs_service or xblock.reference.plugins.FSService(),
user_service=user_service or xb_user_service,
signal_handler=signal_handler or SignalHandler(class_),
**_options)
from dogapi import dog_http_api, dog_stats_api
from django.conf import settings
from xmodule.modulestore.django import modulestore
from django.dispatch import Signal
from request_cache.middleware import RequestCache
from django.core.cache import get_cache
CACHE = get_cache('mongo_metadata_inheritance')
for store_name in settings.MODULESTORE:
store = modulestore(store_name)
store.metadata_inheritance_cache_subsystem = CACHE
store.request_cache = RequestCache.get_request_cache()
modulestore_update_signal = Signal(
providing_args=['modulestore', 'course_id', 'location'])
store.modulestore_update_signal = modulestore_update_signal
if hasattr(settings, 'DATADOG_API'):
dog_http_api.api_key = settings.DATADOG_API
dog_stats_api.start(api_key=settings.DATADOG_API, statsd=True)
def get_cohort(user, course_key, assign=True, use_cached=False):
"""Returns the user's cohort for the specified course.
The cohort for the user is cached for the duration of a request. Pass
use_cached=True to use the cached value instead of fetching from the
database.
Arguments:
user: a Django User object.
course_key: CourseKey
assign (bool): if False then we don't assign a group to user
use_cached (bool): Whether to use the cached value or fetch from database.
Returns:
A CourseUserGroup object if the course is cohorted and the User has a
cohort, else None.
Raises:
ValueError if the CourseKey doesn't exist.
"""
request_cache = RequestCache.get_request_cache()
cache_key = u"cohorts.get_cohort.{}.{}".format(user.id, course_key)
if use_cached and cache_key in request_cache.data:
return request_cache.data[cache_key]
request_cache.data.pop(cache_key, None)
# First check whether the course is cohorted (users shouldn't be in a cohort
# in non-cohorted courses, but settings can change after course starts)
course_cohort_settings = get_course_cohort_settings(course_key)
if not course_cohort_settings.is_cohorted:
return request_cache.data.setdefault(cache_key, None)
# If course is cohorted, check if the user already has a cohort.
try:
membership = CohortMembership.objects.get(
course_id=course_key,
user_id=user.id,
)
return request_cache.data.setdefault(cache_key, membership.course_user_group)
except CohortMembership.DoesNotExist:
# Didn't find the group. If we do not want to assign, return here.
if not assign:
# Do not cache the cohort here, because in the next call assign
# may be True, and we will have to assign the user a cohort.
return None
# Otherwise assign the user a cohort.
try:
with transaction.atomic():
membership = CohortMembership.objects.create(
user=user,
course_user_group=get_random_cohort(course_key)
)
return request_cache.data.setdefault(cache_key, membership.course_user_group)
except IntegrityError as integrity_error:
# An IntegrityError is raised when multiple workers attempt to
# create the same row in one of the cohort model entries:
# CourseCohort, CohortMembership.
log.info(
"HANDLING_INTEGRITY_ERROR: IntegrityError encountered for course '%s' and user '%s': %s",
course_key, user.id, unicode(integrity_error)
)
return get_cohort(user, course_key, assign, use_cached)
from dogapi import dog_http_api, dog_stats_api
from django.conf import settings
from xmodule.modulestore.django import modulestore
from django.dispatch import Signal
from request_cache.middleware import RequestCache
from django.core.cache import get_cache
cache = get_cache('mongo_metadata_inheritance')
for store_name in settings.MODULESTORE:
store = modulestore(store_name)
store.metadata_inheritance_cache_subsystem = cache
store.request_cache = RequestCache.get_request_cache()
modulestore_update_signal = Signal(providing_args=['modulestore', 'course_id', 'location'])
store.modulestore_update_signal = modulestore_update_signal
if hasattr(settings, 'DATADOG_API'):
dog_http_api.api_key = settings.DATADOG_API
dog_stats_api.start(api_key=settings.DATADOG_API, statsd=True)
def create_modulestore_instance(
engine,
content_store,
doc_store_config,
options,
i18n_service=None,
fs_service=None,
user_service=None,
signal_handler=None,
):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ['render_template']
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = caches['mongo_metadata_inheritance']
except InvalidCacheBackendError:
metadata_inheritance_cache = caches['default']
if issubclass(class_, MixedModuleStore):
_options['create_modulestore_instance'] = create_modulestore_instance
if issubclass(class_, BranchSettingMixin):
_options['branch_setting_func'] = _get_modulestore_branch_setting
if HAS_USER_SERVICE and not user_service:
xb_user_service = DjangoXBlockUserService(get_current_user())
else:
xb_user_service = None
if 'read_preference' in doc_store_config:
doc_store_config['read_preference'] = getattr(ReadPreference, doc_store_config['read_preference'])
xblock_field_data_wrappers = [load_function(path) for path in settings.XBLOCK_FIELD_DATA_WRAPPERS]
def fetch_disabled_xblock_types():
"""
Get the disabled xblock names, using the request_cache if possible to avoid hitting
a database every time the list is needed.
"""
# If the import could not be loaded, return an empty list.
if disabled_xblocks is None:
return []
if request_cache:
if 'disabled_xblock_types' not in request_cache.data:
request_cache.data['disabled_xblock_types'] = [block.name for block in disabled_xblocks()]
return request_cache.data['disabled_xblock_types']
else:
disabled_xblock_types = [block.name for block in disabled_xblocks()]
return disabled_xblock_types
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, 'XBLOCK_MIXINS', ()),
xblock_select=getattr(settings, 'XBLOCK_SELECT_FUNCTION', None),
xblock_field_data_wrappers=xblock_field_data_wrappers,
disabled_xblock_types=fetch_disabled_xblock_types,
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService,
fs_service=fs_service or xblock.reference.plugins.FSService(),
user_service=user_service or xb_user_service,
signal_handler=signal_handler or SignalHandler(class_),
**_options
)
from dogapi import dog_http_api, dog_stats_api
from django.conf import settings
from xmodule.modulestore.django import modulestore
from django.dispatch import Signal
from request_cache.middleware import RequestCache
from django.core.cache import get_cache
CACHE = get_cache('mongo_metadata_inheritance')
for store_name in settings.MODULESTORE:
store = modulestore(store_name)
store.set_modulestore_configuration({
'metadata_inheritance_cache_subsystem': CACHE,
'request_cache': RequestCache.get_request_cache()
})
modulestore_update_signal = Signal(providing_args=['modulestore', 'course_id', 'location'])
store.modulestore_update_signal = modulestore_update_signal
if hasattr(settings, 'DATADOG_API'):
dog_http_api.api_key = settings.DATADOG_API
dog_stats_api.start(api_key=settings.DATADOG_API, statsd=True)
from dogapi import dog_http_api, dog_stats_api
from django.conf import settings
from xmodule.modulestore.django import modulestore
from request_cache.middleware import RequestCache
from django.core.cache import get_cache
cache = get_cache('mongo_metadata_inheritance')
for store_name in settings.MODULESTORE:
store = modulestore(store_name)
store.set_modulestore_configuration({
'metadata_inheritance_cache_subsystem': cache,
'request_cache': RequestCache.get_request_cache()
})
if hasattr(settings, 'DATADOG_API'):
dog_http_api.api_key = settings.DATADOG_API
dog_stats_api.start(api_key=settings.DATADOG_API, statsd=True)
def create_modulestore_instance(
engine,
content_store,
doc_store_config,
options,
i18n_service=None,
fs_service=None,
user_service=None,
signal_handler=None,
):
"""
This will return a new instance of a modulestore given an engine and options
"""
class_ = load_function(engine)
_options = {}
_options.update(options)
FUNCTION_KEYS = ['render_template']
for key in FUNCTION_KEYS:
if key in _options and isinstance(_options[key], basestring):
_options[key] = load_function(_options[key])
if HAS_REQUEST_CACHE:
request_cache = RequestCache.get_request_cache()
else:
request_cache = None
try:
metadata_inheritance_cache = caches['mongo_metadata_inheritance']
except InvalidCacheBackendError:
metadata_inheritance_cache = caches['default']
if issubclass(class_, MixedModuleStore):
_options['create_modulestore_instance'] = create_modulestore_instance
if issubclass(class_, BranchSettingMixin):
_options['branch_setting_func'] = _get_modulestore_branch_setting
if HAS_USER_SERVICE and not user_service:
xb_user_service = DjangoXBlockUserService(get_current_user())
else:
xb_user_service = None
if 'read_preference' in doc_store_config:
doc_store_config['read_preference'] = getattr(ReadPreference, doc_store_config['read_preference'])
if XBlockDisableConfig and settings.FEATURES.get('ENABLE_DISABLING_XBLOCK_TYPES', False):
disabled_xblock_types = XBlockDisableConfig.disabled_block_types()
else:
disabled_xblock_types = ()
return class_(
contentstore=content_store,
metadata_inheritance_cache_subsystem=metadata_inheritance_cache,
request_cache=request_cache,
xblock_mixins=getattr(settings, 'XBLOCK_MIXINS', ()),
xblock_select=getattr(settings, 'XBLOCK_SELECT_FUNCTION', None),
disabled_xblock_types=disabled_xblock_types,
doc_store_config=doc_store_config,
i18n_service=i18n_service or ModuleI18nService(),
fs_service=fs_service or xblock.reference.plugins.FSService(),
user_service=user_service or xb_user_service,
signal_handler=signal_handler or SignalHandler(class_),
**_options
)
def get_cohort(user, course_key, assign=True, use_cached=False):
"""Returns the user's cohort for the specified course.
The cohort for the user is cached for the duration of a request. Pass
use_cached=True to use the cached value instead of fetching from the
database.
Arguments:
user: a Django User object.
course_key: CourseKey
assign (bool): if False then we don't assign a group to user
use_cached (bool): Whether to use the cached value or fetch from database.
Returns:
A CourseUserGroup object if the course is cohorted and the User has a
cohort, else None.
Raises:
ValueError if the CourseKey doesn't exist.
"""
request_cache = RequestCache.get_request_cache()
cache_key = u"cohorts.get_cohort.{}.{}".format(user.id, course_key)
if use_cached and cache_key in request_cache.data:
return request_cache.data[cache_key]
request_cache.data.pop(cache_key, None)
# First check whether the course is cohorted (users shouldn't be in a cohort
# in non-cohorted courses, but settings can change after course starts)
course_cohort_settings = get_course_cohort_settings(course_key)
if not course_cohort_settings.is_cohorted:
return request_cache.data.setdefault(cache_key, None)
# If course is cohorted, check if the user already has a cohort.
try:
membership = CohortMembership.objects.get(
course_id=course_key,
user_id=user.id,
)
return request_cache.data.setdefault(cache_key,
membership.course_user_group)
except CohortMembership.DoesNotExist:
# Didn't find the group. If we do not want to assign, return here.
if not assign:
# Do not cache the cohort here, because in the next call assign
# may be True, and we will have to assign the user a cohort.
return None
# Otherwise assign the user a cohort.
try:
with transaction.atomic():
membership = CohortMembership.objects.create(
user=user, course_user_group=get_random_cohort(course_key))
return request_cache.data.setdefault(cache_key,
membership.course_user_group)
except IntegrityError as integrity_error:
# An IntegrityError is raised when multiple workers attempt to
# create the same row in one of the cohort model entries:
# CourseCohort, CohortMembership.
log.info(
"HANDLING_INTEGRITY_ERROR: IntegrityError encountered for course '%s' and user '%s': %s",
course_key, user.id, unicode(integrity_error))
return get_cohort(user, course_key, assign, use_cached)
def handle(self, *args, **options):
if len(args) != 1:
raise CommandError(
"check_course requires one argument: <location>")
loc_str = args[0]
loc = CourseDescriptor.id_to_location(loc_str)
store = modulestore()
# setup a request cache so we don't throttle the DB with all the metadata inheritance requests
store.set_modulestore_configuration({
'metadata_inheritance_cache_subsystem':
CACHE,
'request_cache':
RequestCache.get_request_cache()
})
course = store.get_item(loc, depth=3)
err_cnt = 0
def _xlint_metadata(module):
err_cnt = check_module_metadata_editability(module)
for child in module.get_children():
err_cnt = err_cnt + _xlint_metadata(child)
return err_cnt
err_cnt = err_cnt + _xlint_metadata(course)
# we've had a bug where the xml_attributes field can we rewritten as a string rather than a dict
def _check_xml_attributes_field(module):
err_cnt = 0
if hasattr(module, 'xml_attributes') and isinstance(
module.xml_attributes, basestring):
print 'module = {0} has xml_attributes as a string. It should be a dict'.format(
module.location.url())
err_cnt = err_cnt + 1
for child in module.get_children():
err_cnt = err_cnt + _check_xml_attributes_field(child)
return err_cnt
err_cnt = err_cnt + _check_xml_attributes_field(course)
# check for dangling discussion items, this can cause errors in the forums
def _get_discussion_items(module):
discussion_items = []
if module.location.category == 'discussion':
discussion_items = discussion_items + [module.location.url()]
for child in module.get_children():
discussion_items = discussion_items + _get_discussion_items(
child)
return discussion_items
discussion_items = _get_discussion_items(course)
# now query all discussion items via get_items() and compare with the tree-traversal
queried_discussion_items = store.get_items([
'i4x', course.location.org, course.location.course, 'discussion',
None, None
])
for item in queried_discussion_items:
if item.location.url() not in discussion_items:
print 'Found dangling discussion module = {0}'.format(
item.location.url())
