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[downloader/fragment] Restart download if .ytdl file is corrupt (closes #16312)

This commit is contained in:
Sergey M․ 2018-04-29 00:33:31 +07:00
parent 7dd6ab4a47
commit 500a86a52e
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GPG Key ID: 2C393E0F18A9236D
1 changed files with 16 additions and 5 deletions
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17
youtube_dl/downloader/fragment.py
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@ -74,8 +74,13 @@ class FragmentFD(FileDownloader):
return not ctx['live'] and not ctx['tmpfilename'] == '-'
def _read_ytdl_file(self, ctx):
assert 'ytdl_corrupt' not in ctx
stream, _ = sanitize_open(self.ytdl_filename(ctx['filename']), 'r')
try:
ctx['fragment_index'] = json.loads(stream.read())['downloader']['current_fragment']['index']
except Exception:
ctx['ytdl_corrupt'] = True
finally:
stream.close()
def _write_ytdl_file(self, ctx):
@ -158,11 +163,17 @@ class FragmentFD(FileDownloader):
if self.__do_ytdl_file(ctx):
if os.path.isfile(encodeFilename(self.ytdl_filename(ctx['filename']))):
self._read_ytdl_file(ctx)
if ctx['fragment_index'] > 0 and resume_len == 0:
is_corrupt = ctx.get('ytdl_corrupt') is True
is_inconsistent = ctx['fragment_index'] > 0 and resume_len == 0
if is_corrupt or is_inconsistent:
message = (
'.ytdl file is corrupt' if is_corrupt else
'Inconsistent state of incomplete fragment download')
self.report_warning(
'Inconsistent state of incomplete fragment download. '
'Restarting from the beginning...')
'%s. Restarting from the beginning...' % message)
ctx['fragment_index'] = resume_len = 0
if 'ytdl_corrupt' in ctx:
del ctx['ytdl_corrupt']
self._write_ytdl_file(ctx)
else:
self._write_ytdl_file(ctx)