def upload_converted_to_archive(youtube_id, formats_to_upload):
# The bucket may not exist yet on archive.org. Unfortunately create_bucket
# is broken in boto (it requires all-lowercase, despite the fact that
# we're using OrdinaryCallingFormat). Fortunately get_bucket can be told
# to not check that the bucket exists with the validate=False flag, and
# the "x-archive-auto-make-bucket" header we pass below automatically
# creates the bucket with the first upload.
dest_bucket = archive_connection.get_bucket("KA-converted-{0}".format(youtube_id), validate=False)
source_keys_for_format = defaultdict(list)
for key in list(converted_bucket.list(youtube_id)):
video_match = re_video_key_name.match(key.name)
if video_match is None:
if re_legacy_video_key_name.match(key.name) is None:
logger.info("Unrecognized file in converted bucket {0}".format(key.name))
continue
assert video_match.group(1) == youtube_id
format = video_match.group(2)
modification_date = datetime.strptime(key.last_modified, "%Y-%m-%dT%H:%M:%S.%fZ")
if datetime.utcnow() - modification_date < timedelta(hours=1):
logger.error("Format {0} for video {1} appeared ready on S3, but further inspection showed Zencoder may still be uploading it. Modification date {2}".format(format, youtube_id, modification_date))
return False
# Maps format (mp4, m3u8, etc) to list of keys
source_keys_for_format[format].append(key)
for format in formats_to_upload:
if len(source_keys_for_format[format]) == 0:
logger.error("Requested upload of format {0} for video {1} to archive.org, but unable to find video format in converted bucket".format(format, youtube_id))
return False
# Fetch the video metadata so we can specify title and description to archive.org
video_metadata = api.video_metadata(youtube_id)
# Only pass ascii title and descriptions in headers to archive, and strip newlines
def normalize_for_header(s):
return unicodedata.normalize("NFKD", s or u"").encode("ascii", "ignore").replace("\n", "")
uploaded_filenames = []
for format in formats_to_upload:
for key in source_keys_for_format[format]:
video_match = re_video_key_name.match(key.name)
assert video_match.group(1) == youtube_id
assert video_match.group(2) == format
video_prefix = video_match.group()
assert key.name.startswith(video_prefix)
destination_name = key.name[len(video_prefix):]
assert "/" not in destination_name # Don't expect more than one level of nesting
logger.debug("Copying file {0} to archive.org".format(destination_name))
with tempfile.TemporaryFile() as t:
pbar = ProgressBar(maxval=100).start()
def get_cb(bytes_sent, bytes_total):
pbar.update(50.0 * bytes_sent / bytes_total)
def send_cb(bytes_sent, bytes_total):
pbar.update(50.0 + 50.0 * bytes_sent / bytes_total)
key.get_file(t, cb=get_cb)
t.seek(0)
dest_key = Key(dest_bucket, destination_name)
headers = {
"x-archive-auto-make-bucket": "1",
"x-archive-meta-collection": "khanacademy",
"x-archive-meta-title": normalize_for_header(video_metadata["title"]),
"x-archive-meta-description": normalize_for_header(video_metadata["description"]),
"x-archive-meta-mediatype": "movies",
"x-archive-meta01-subject": "Salman Khan",
"x-archive-meta02-subject": "Khan Academy",
}
for attempt in xrange(10):
try:
dest_key.set_contents_from_file(t, headers=headers, cb=send_cb)
break
except BotoServerError as e:
logger.error("Error {0} {1} during upload attempt {2} to archive.org.".format(e.status, e.reason, attempt))
else:
raise Exception("Gave up publish attempt due to server errors")
pbar.finish()
uploaded_filenames.append(destination_name)
logger.debug("Waiting 10 seconds for uploads to propagate")
time.sleep(10)
for destination_name in uploaded_filenames:
if verify_archive_upload(youtube_id, destination_name):
logger.error("Verified upload {0}/{1}".format(youtube_id, destination_name))
else:
logger.error("Unable to verify upload {0}/{1}".format(youtube_id, destination_name))
return False
return True
def publish_converted_videos(max_videos, dryrun=False, use_archive=True):
logger.info(
"Searching for downloadable content that needs to be "
"published")
publish_attempts = 0
converted_formats = s3.list_converted_formats()
for youtube_id, missing_formats in (api.list_missing_video_content()
.iteritems()):
if publish_attempts >= max_videos:
logger.info("Stopping: max videos reached")
break
converted_missing_formats = (
converted_formats[youtube_id] & missing_formats)
unconverted_formats = missing_formats - converted_missing_formats
if len(unconverted_formats) > 0:
logger.info(
"Video %s missing formats %s which are still "
"unconverted, can't be published" %
(youtube_id, ",".join(unconverted_formats)))
# If no converted content waiting, just continue to next video
if len(converted_missing_formats) == 0:
continue
if dryrun:
logger.info(
"Skipping publish for video {0} formats {1} due to dryrun"
.format(youtube_id, ", ".join(converted_missing_formats)))
else:
if use_archive:
if s3.upload_converted_to_archive(
youtube_id, converted_missing_formats):
logger.info("Successfully uploaded to archive.org")
else:
logger.error(
"Unable to upload video {0} to archive.org"
.format(youtube_id))
continue
else:
logger.info("Skipping upload to archive.org; assuming API "
"points directly to S3 instead.")
current_format_downloads = (api.video_metadata(youtube_id)[
"download_urls"] or {})
current_formats = set(current_format_downloads.keys())
new_formats = current_formats | converted_missing_formats
if "mp4" in new_formats:
# PNG thumbnails are generated as part of the MP4
# conversion process. If mp4 has been uploaded to
# archive.org, png is guaranteed to be there as well.
new_formats.add("png")
if api.update_download_available(youtube_id, new_formats):
logger.info(
"Updated KA download_available, set to {0} for video "
"{1}".format(", ".join(new_formats), youtube_id))
else:
logger.error(
"Unable to update KA download_available to {0} for "
"youtube id {1}".format(", ".join(new_formats),
youtube_id))
publish_attempts += 1
