6057527689
* INCR-227: python-modernize on common/lib/xmodule/xmodule/video_module, partitions, and util * pylint will ignore imports from six * INCR-227 Fixing mangled comments and variable names
148 lines
4.3 KiB
Python
148 lines
4.3 KiB
Python
"""
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Utils for video bumper
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"""
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from __future__ import absolute_import
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import copy
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import json
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import logging
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from collections import OrderedDict
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from datetime import datetime, timedelta
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import pytz
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from django.conf import settings
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from .video_utils import set_query_parameter
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try:
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import edxval.api as edxval_api
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except ImportError:
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edxval_api = None
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log = logging.getLogger(__name__)
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def get_bumper_settings(video):
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"""
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Get bumper settings from video instance.
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"""
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bumper_settings = copy.deepcopy(getattr(video, 'video_bumper', {}))
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# clean up /static/ prefix from bumper transcripts
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for lang, transcript_url in bumper_settings.get('transcripts', {}).items():
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bumper_settings['transcripts'][lang] = transcript_url.replace("/static/", "")
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return bumper_settings
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def is_bumper_enabled(video):
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"""
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Check if bumper enabled.
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- Feature flag ENABLE_VIDEO_BUMPER should be set to True
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- Do not show again button should not be clicked by user.
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- Current time minus periodicity must be greater that last time viewed
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- edxval_api should be presented
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Returns:
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bool.
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"""
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bumper_last_view_date = getattr(video, 'bumper_last_view_date', None)
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utc_now = datetime.utcnow().replace(tzinfo=pytz.utc)
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periodicity = settings.FEATURES.get('SHOW_BUMPER_PERIODICITY', 0)
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has_viewed = any([
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video.bumper_do_not_show_again,
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(bumper_last_view_date and bumper_last_view_date + timedelta(seconds=periodicity) > utc_now)
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])
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is_studio = getattr(video.system, "is_author_mode", False)
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return bool(
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not is_studio and
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settings.FEATURES.get('ENABLE_VIDEO_BUMPER') and
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get_bumper_settings(video) and
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edxval_api and
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not has_viewed
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)
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def bumperize(video):
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"""
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Populate video with bumper settings, if they are presented.
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"""
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video.bumper = {
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'enabled': False,
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'edx_video_id': "",
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'transcripts': {},
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'metadata': None,
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}
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if not is_bumper_enabled(video):
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return
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bumper_settings = get_bumper_settings(video)
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try:
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video.bumper['edx_video_id'] = bumper_settings['video_id']
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video.bumper['transcripts'] = bumper_settings['transcripts']
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except (TypeError, KeyError):
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log.warning(
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"Could not retrieve video bumper information from course settings"
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)
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return
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sources = get_bumper_sources(video)
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if not sources:
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return
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video.bumper.update({
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'metadata': bumper_metadata(video, sources),
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'enabled': True, # Video poster needs this.
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})
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def get_bumper_sources(video):
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"""
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Get bumper sources from edxval.
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Returns list of sources.
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"""
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try:
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val_profiles = ["desktop_webm", "desktop_mp4"]
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val_video_urls = edxval_api.get_urls_for_profiles(video.bumper['edx_video_id'], val_profiles)
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bumper_sources = [url for url in [val_video_urls[p] for p in val_profiles] if url]
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except edxval_api.ValInternalError:
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# if no bumper sources, nothing will be showed
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log.warning(
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"Could not retrieve information from VAL for Bumper edx Video ID: %s.", video.bumper['edx_video_id']
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)
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return []
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return bumper_sources
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def bumper_metadata(video, sources):
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"""
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Generate bumper metadata.
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"""
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transcripts = video.get_transcripts_info(is_bumper=True)
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unused_track_url, bumper_transcript_language, bumper_languages = video.get_transcripts_for_student(transcripts)
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metadata = OrderedDict({
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'saveStateUrl': video.system.ajax_url + '/save_user_state',
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'showCaptions': json.dumps(video.show_captions),
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'sources': sources,
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'streams': '',
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'transcriptLanguage': bumper_transcript_language,
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'transcriptLanguages': bumper_languages,
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'transcriptTranslationUrl': set_query_parameter(
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video.runtime.handler_url(video, 'transcript', 'translation/__lang__').rstrip('/?'), 'is_bumper', 1
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),
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'transcriptAvailableTranslationsUrl': set_query_parameter(
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video.runtime.handler_url(video, 'transcript', 'available_translations').rstrip('/?'), 'is_bumper', 1
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),
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'publishCompletionUrl': set_query_parameter(
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video.runtime.handler_url(video, 'publish_completion', '').rstrip('?'), 'is_bumper', 1
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),
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})
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return metadata
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