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chore: move get_transcript method to video service (#37635)

Browse Source 
https://github.com/openedx/public-engineering/issues/445
This commit is contained in:
Muhammad Farhan Khan
2025-12-05 17:53:10 +05:00
committed by GitHub
parent d592784b35
commit b57e2ac1ea
8 changed files with 102 additions and 33 deletions
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35
xmodule/video_block/video_block.py
View File

@@ -56,13 +56,14 @@ from openedx.core.djangoapps.video_config.transcripts_utils import (
clean_video_id,
get_endonym_or_label,
get_html5_ids,
get_transcript,
subs_filename
)
from .video_handlers import VideoStudentViewHandlers, VideoStudioViewHandlers
from .video_utils import create_youtube_string, format_xml_exception_message, get_poster, rewrite_video_url
from .video_xfields import VideoFields
from xblocks_contrib.video.exceptions import TranscriptNotFoundError
# The following import/except block for edxval is temporary measure until
# edxval is a proper XBlock Runtime Service.
#
@@ -652,13 +653,15 @@ class _BuiltInVideoBlock(
# construct transcripts info and also find if `en` subs exist
transcripts_info = self.get_transcripts_info()
possible_sub_ids = [self.sub, self.youtube_id_1_0] + get_html5_ids(self.html5_sources)
for sub_id in possible_sub_ids:
try:
_, sub_id, _ = get_transcript(self, lang='en', output_format=Transcript.TXT)
transcripts_info['transcripts'] = dict(transcripts_info['transcripts'], en=sub_id)
break
except NotFoundError:
continue
video_config_service = self.runtime.service(self, 'video_config')
if video_config_service:
for sub_id in possible_sub_ids:
try:
_, sub_id, _ = video_config_service.get_transcript(self, lang='en', output_format=Transcript.TXT)
transcripts_info['transcripts'] = dict(transcripts_info['transcripts'], en=sub_id)
break
except TranscriptNotFoundError:
continue
editable_fields['transcripts']['value'] = transcripts_info['transcripts']
editable_fields['transcripts']['urlRoot'] = self.runtime.handler_url(
@@ -1091,12 +1094,16 @@ class _BuiltInVideoBlock(
def _update_transcript_for_index(language=None):
""" Find video transcript - if not found, don't update index """
try:
transcript = get_transcript(self, lang=language, output_format=Transcript.TXT)[0].replace("\n", " ")
transcript_index_name = f"transcript_{language if language else self.transcript_language}"
video_body.update({transcript_index_name: transcript})
except NotFoundError:
pass
video_config_service = self.runtime.service(self, 'video_config')
if video_config_service:
try:
transcript = video_config_service.get_transcript(
self, lang=language, output_format=Transcript.TXT
)[0].replace("\n", " ")
transcript_index_name = f"transcript_{language if language else self.transcript_language}"
video_body.update({transcript_index_name: transcript})
except TranscriptNotFoundError:
pass
if self.sub:
_update_transcript_for_index()

44
xmodule/video_block/video_handlers.py
View File

@@ -25,21 +25,44 @@ from openedx.core.djangoapps.content_libraries import api as lib_api
from openedx.core.djangoapps.video_config.transcripts_utils import (
Transcript,
TranscriptException,
TranscriptsGenerationException,
clean_video_id,
generate_sjson_for_all_speeds,
get_html5_ids,
get_or_create_sjson,
get_transcript,
get_transcript_from_contentstore,
remove_subs_from_store,
subs_filename,
youtube_speed_dict
)
from xblocks_contrib.video.exceptions import (
TranscriptsGenerationException,
TranscriptNotFoundError,
)
log = logging.getLogger(__name__)
def get_transcript(
video_block,
lang: str | None = None,
output_format: str = 'srt',
youtube_id: str | None = None,
) -> tuple[bytes, str, str]:
"""
Retrieve a transcript using a video block's configuration service.
Returns:
tuple(bytes, str, str): transcript content, filename, and mimetype.
Raises:
Exception: If the video config service is not available or the transcript cannot be retrieved.
"""
video_config_service = video_block.runtime.service(video_block, 'video_config')
if not video_config_service:
raise Exception("Video config service not found")
return video_config_service.get_transcript(video_block, lang, output_format, youtube_id)
# Disable no-member warning:
# pylint: disable=no-member
@@ -356,7 +379,7 @@ class VideoStudentViewHandlers:
mimetype,
add_attachment_header=False
)
except NotFoundError as exc:
except (NotFoundError, TranscriptNotFoundError) as exc:
edx_video_id = clean_video_id(self.edx_video_id)
log.warning(
'[Translation Dispatch] %s: %s',
@@ -370,7 +393,7 @@ class VideoStudentViewHandlers:
try:
content, filename, mimetype = get_transcript(self, lang, output_format=self.transcript_download_format)
except NotFoundError:
except TranscriptNotFoundError:
return Response(status=404)
response = self.make_transcript_http_response(
@@ -660,8 +683,11 @@ class VideoStudioViewHandlers:
return Response(json={'error': _('Language is required.')}, status=400)
try:
transcript_content, transcript_name, mime_type = get_transcript(
video=self, lang=language, output_format=Transcript.SRT
video_config_service = self.runtime.service(self, 'video_config')
if not video_config_service:
return Response(status=404)
transcript_content, transcript_name, mime_type = video_config_service.get_transcript(
self, lang=language, output_format=Transcript.SRT
)
response = Response(transcript_content, headerlist=[
(
@@ -671,6 +697,10 @@ class VideoStudioViewHandlers:
('Content-Language', language),
('Content-Type', mime_type)
])
except (UnicodeDecodeError, TranscriptsGenerationException, NotFoundError):
except (
UnicodeDecodeError,
TranscriptsGenerationException,
TranscriptNotFoundError
):
response = Response(status=404)
return response