def to_internal_value(self, data):
"""
Convert data into CourseVideo instance and image filename tuple.
"""
course_id = data
course_video = image = ''
if data:
if isinstance(data, dict):
(course_id, image), = list(data.items())
course_video = CourseVideo(course_id=course_id)
course_video.full_clean(exclude=['video'])
return course_video, image
def to_internal_value(self, data):
"""
Convert data into CourseVideo instance and image filename tuple.
"""
course_id = data
course_video = image = ''
if data:
if isinstance(data, dict):
(course_id, image), = data.items()
course_video = CourseVideo(course_id=course_id)
course_video.full_clean(exclude=['video'])
return course_video, image
def import_from_xml(xml, edx_video_id, course_id=None):
"""
Imports data from a video_asset element about the given video_id.
If the edx_video_id already exists, then no changes are made. If an unknown
profile is referenced by an encoded video, that encoding will be ignored.
Arguments:
xml (Element): An lxml video_asset element containing import data
edx_video_id (str): val video id
course_id (str): The ID of a course to associate the video with
Raises:
ValCannotCreateError: if there is an error importing the video
"""
if xml.tag != 'video_asset':
raise ValCannotCreateError('Invalid XML')
# if edx_video_id does not exist then create video transcripts only
if not edx_video_id:
return create_transcript_objects(xml)
# If video with edx_video_id already exists, associate it with the given course_id.
try:
video = Video.objects.get(edx_video_id=edx_video_id)
logger.info(
"edx_video_id '%s' present in course '%s' not imported because it exists in VAL.",
edx_video_id,
course_id,
)
if course_id:
course_video, __ = CourseVideo.get_or_create_with_validation(
video=video, course_id=course_id)
image_file_name = xml.get('image', '').strip()
if image_file_name:
VideoImage.create_or_update(course_video, image_file_name)
# import transcripts
create_transcript_objects(xml)
return
except ValidationError as err:
logger.exception(err.message)
raise ValCannotCreateError(err.message_dict)
except Video.DoesNotExist:
pass
# Video with edx_video_id did not exist, so create one from xml data.
data = {
'edx_video_id': edx_video_id,
'client_video_id': xml.get('client_video_id'),
'duration': xml.get('duration'),
'status': 'imported',
'encoded_videos': [],
'courses': [{
course_id: xml.get('image')
}] if course_id else [],
}
for encoded_video_el in xml.iterfind('encoded_video'):
profile_name = encoded_video_el.get('profile')
try:
Profile.objects.get(profile_name=profile_name)
except Profile.DoesNotExist:
logger.info(
"Imported edx_video_id '%s' contains unknown profile '%s'.",
edx_video_id, profile_name)
continue
data['encoded_videos'].append({
'profile':
profile_name,
'url':
encoded_video_el.get('url'),
'file_size':
encoded_video_el.get('file_size'),
'bitrate':
encoded_video_el.get('bitrate'),
})
create_video(data)
create_transcript_objects(xml)
def import_from_xml(xml, edx_video_id, course_id=None):
"""
Imports data from a video_asset element about the given edx_video_id.
If the edx_video_id already exists, then no changes are made. If an unknown
profile is referenced by an encoded video, that encoding will be ignored.
Args:
xml: An lxml video_asset element containing import data
edx_video_id (str): The ID for the video content
course_id (str): The ID of a course to associate the video with
(optional)
Raises:
ValCannotCreateError: if there is an error importing the video
"""
if xml.tag != 'video_asset':
raise ValCannotCreateError('Invalid XML')
# If video with edx_video_id already exists, associate it with the given course_id.
try:
video = Video.objects.get(edx_video_id=edx_video_id)
logger.info(
"edx_video_id '%s' present in course '%s' not imported because it exists in VAL.",
edx_video_id,
course_id,
)
if course_id:
CourseVideo.get_or_create_with_validation(video=video, course_id=course_id)
return
except ValidationError as err:
logger.exception(err.message)
raise ValCannotCreateError(err.message_dict)
except Video.DoesNotExist:
pass
# Video with edx_video_id did not exist, so create one from xml data.
data = {
'edx_video_id': edx_video_id,
'client_video_id': xml.get('client_video_id'),
'duration': xml.get('duration'),
'status': 'imported',
'encoded_videos': [],
'courses': [course_id] if course_id else [],
}
for encoded_video_el in xml.iterfind('encoded_video'):
profile_name = encoded_video_el.get('profile')
try:
Profile.objects.get(profile_name=profile_name)
except Profile.DoesNotExist:
logger.info(
"Imported edx_video_id '%s' contains unknown profile '%s'.",
edx_video_id,
profile_name
)
continue
data['encoded_videos'].append({
'profile': profile_name,
'url': encoded_video_el.get('url'),
'file_size': encoded_video_el.get('file_size'),
'bitrate': encoded_video_el.get('bitrate'),
})
create_video(data)
def import_from_xml(xml, edx_video_id, resource_fs, static_dir, external_transcripts=None, course_id=None):
"""
Imports data from a video_asset element about the given video_id.
If the edx_video_id already exists, then no changes are made. If an unknown
profile is referenced by an encoded video, that encoding will be ignored.
Arguments:
xml (Element): An lxml video_asset element containing import data
edx_video_id (str): val video id
resource_fs (OSFS): Import file system.
static_dir (str): The Directory to retrieve transcript file.
external_transcripts : A dict containing the list of names of the external transcripts.
course_id: course id
Example:
{
'en': ['The_Flash.srt', 'Harry_Potter.srt'],
'es': ['Green_Arrow.srt']
}
course_id (str): The ID of a course to associate the video with
Raises:
ValCannotCreateError: if there is an error importing the video
Returns:
edx_video_id (str): val video id.
"""
if external_transcripts is None:
external_transcripts = {}
if xml.tag != 'video_asset':
raise ValCannotCreateError('Invalid XML')
# If video with edx_video_id already exists, associate it with the given course_id.
try:
if not edx_video_id:
raise Video.DoesNotExist
video = Video.objects.get(edx_video_id=edx_video_id)
logger.info(
"edx_video_id '%s' present in course '%s' not imported because it exists in VAL.",
edx_video_id,
course_id,
)
# We don't want to link an existing video to course if its an external video.
# External videos do not have any playback profiles associated, these are just to track video
# transcripts for those video components who do not use edx hosted videos for playback.
if course_id and video.status != EXTERNAL_VIDEO_STATUS:
course_video, __ = CourseVideo.get_or_create_with_validation(video=video, course_id=course_id)
image_file_name = xml.get('image', '').strip()
if image_file_name:
VideoImage.create_or_update(course_video, image_file_name)
# Make sure transcripts are imported when video exists
create_transcript_objects(
xml,
edx_video_id,
resource_fs,
static_dir,
external_transcripts
)
return edx_video_id
except ValidationError as err:
logger.exception(xml)
raise ValCannotCreateError(err.message_dict) from err
except Video.DoesNotExist:
pass
if edx_video_id:
# Video with edx_video_id did not exist, so create one from xml data.
data = {
'edx_video_id': edx_video_id,
'client_video_id': xml.get('client_video_id'),
'duration': xml.get('duration'),
'status': 'imported',
'encoded_videos': [],
'courses': [{course_id: xml.get('image')}] if course_id else [],
}
for encoded_video_el in xml.iterfind('encoded_video'):
profile_name = encoded_video_el.get('profile')
try:
Profile.objects.get(profile_name=profile_name)
except Profile.DoesNotExist:
logger.info(
"Imported edx_video_id '%s' contains unknown profile '%s'.",
edx_video_id,
profile_name
)
continue
data['encoded_videos'].append({
'profile': profile_name,
'url': encoded_video_el.get('url'),
'file_size': encoded_video_el.get('file_size'),
'bitrate': encoded_video_el.get('bitrate'),
})
if not data['encoded_videos']:
# Video's status does not get included in video xml at the time of export. So, at this point,
# we cannot tell from xml that whether a video had an external status. But if encoded videos
# are not set, the chances are, the video was an external one, in which case, we will not link
# it to the course(s). Even if the video wasn't an external one and it is having 0 encodes in
# xml, it does not have a side effect if not linked to a course, since the video was already
# non-playable.
data['status'] = EXTERNAL_VIDEO_STATUS
data['courses'] = []
# Create external video if no edx_video_id.
edx_video_id = create_video(data)
else:
edx_video_id = create_external_video('External Video')
create_transcript_objects(xml, edx_video_id, resource_fs, static_dir, external_transcripts)
return edx_video_id
def to_internal_value(self, data):
if data:
course_video = CourseVideo(course_id=data)
course_video.full_clean(exclude=["video"])
return course_video
def from_native(self, data):
if data:
course_video = CourseVideo(course_id=data)
course_video.full_clean(exclude=["video"])
return course_video
def import_from_xml(xml, edx_video_id, resource_fs, static_dir, external_transcripts=dict(), course_id=None):
"""
Imports data from a video_asset element about the given video_id.
If the edx_video_id already exists, then no changes are made. If an unknown
profile is referenced by an encoded video, that encoding will be ignored.
Arguments:
xml (Element): An lxml video_asset element containing import data
edx_video_id (str): val video id
resource_fs (OSFS): Import file system.
static_dir (str): The Directory to retrieve transcript file.
external_transcripts (dict): A dict containing the list of names of the external transcripts.
Example:
{
'en': ['The_Flash.srt', 'Harry_Potter.srt'],
'es': ['Green_Arrow.srt']
}
course_id (str): The ID of a course to associate the video with
Raises:
ValCannotCreateError: if there is an error importing the video
Returns:
edx_video_id (str): val video id.
"""
if xml.tag != 'video_asset':
raise ValCannotCreateError('Invalid XML')
# If video with edx_video_id already exists, associate it with the given course_id.
try:
if not edx_video_id:
raise Video.DoesNotExist
video = Video.objects.get(edx_video_id=edx_video_id)
logger.info(
"edx_video_id '%s' present in course '%s' not imported because it exists in VAL.",
edx_video_id,
course_id,
)
# We don't want to link an existing video to course if its an external video.
# External videos do not have any playback profiles associated, these are just to track video
# transcripts for those video components who do not use edx hosted videos for playback.
if course_id and video.status != EXTERNAL_VIDEO_STATUS:
course_video, __ = CourseVideo.get_or_create_with_validation(video=video, course_id=course_id)
image_file_name = xml.get('image', '').strip()
if image_file_name:
VideoImage.create_or_update(course_video, image_file_name)
return edx_video_id
except ValidationError as err:
logger.exception(err.message)
raise ValCannotCreateError(err.message_dict)
except Video.DoesNotExist:
pass
if edx_video_id:
# Video with edx_video_id did not exist, so create one from xml data.
data = {
'edx_video_id': edx_video_id,
'client_video_id': xml.get('client_video_id'),
'duration': xml.get('duration'),
'status': 'imported',
'encoded_videos': [],
'courses': [{course_id: xml.get('image')}] if course_id else [],
}
for encoded_video_el in xml.iterfind('encoded_video'):
profile_name = encoded_video_el.get('profile')
try:
Profile.objects.get(profile_name=profile_name)
except Profile.DoesNotExist:
logger.info(
"Imported edx_video_id '%s' contains unknown profile '%s'.",
edx_video_id,
profile_name
)
continue
data['encoded_videos'].append({
'profile': profile_name,
'url': encoded_video_el.get('url'),
'file_size': encoded_video_el.get('file_size'),
'bitrate': encoded_video_el.get('bitrate'),
})
if not data['encoded_videos']:
# Video's status does not get included in video xml at the time of export. So, at this point,
# we cannot tell from xml that whether a video had an external status. But if encoded videos
# are not set, the chances are, the video was an external one, in which case, we will not link
# it to the course(s). Even if the video wasn't an external one and it is having 0 encodes in
# xml, it does not have a side effect if not linked to a course, since the video was already
# non-playable.
data['status'] = EXTERNAL_VIDEO_STATUS
data['courses'] = []
# Create external video if no edx_video_id.
edx_video_id = create_video(data)
else:
edx_video_id = create_external_video('External Video')
create_transcript_objects(xml, edx_video_id, resource_fs, static_dir, external_transcripts)
return edx_video_id
def to_internal_value(self, data):
if data:
course_video = CourseVideo(course_id=data)
course_video.full_clean(exclude=["video"])
return course_video
