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Implement _get_exported_sender

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Lonami Exo
2018-06-11 20:05:10 +02:00
parent 64dd957189
commit f9cd220ddd
2 changed files with 49 additions and 87 deletions
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40
telethon/client/downloads.py
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@@ -199,9 +199,8 @@ class DownloadMethods(UserMethods):
else:
f = file
# The used client will change if FileMigrateError occurs
client = self
cdn_decrypter = None
# The used sender will change if ``FileMigrateError`` occurs
sender = self._sender
input_location = utils.get_input_location(input_location)
__log__.info('Downloading file in chunks of %d bytes', part_size)
@@ -209,47 +208,32 @@ class DownloadMethods(UserMethods):
offset = 0
while True:
try:
if cdn_decrypter:
result = cdn_decrypter.get_file()
else:
result = client(functions.upload.GetFileRequest(
input_location, offset, part_size
))
if isinstance(result, types.upload.FileCdnRedirect):
__log__.info('File lives in a CDN')
cdn_decrypter, result = \
await CdnDecrypter.prepare_decrypter(
client, await self._get_cdn_client(result),
result
)
result = await sender.send(functions.upload.GetFileRequest(
input_location, offset, part_size
))
if isinstance(result, types.upload.FileCdnRedirect):
# TODO Implement
raise NotImplementedError
except errors.FileMigrateError as e:
__log__.info('File lives in another DC')
client = await self._get_exported_client(e.new_dc)
sender = await self._get_exported_sender(e.new_dc)
continue
offset += part_size
# If we have received no data (0 bytes), the file is over
# So there is nothing left to download and write
if not result.bytes:
# Return some extra information, unless it's a CDN file
if in_memory:
f.flush()
return f.getvalue()
else:
return getattr(result, 'type', '')
__log__.debug('Saving %d more bytes', len(result.bytes))
f.write(result.bytes)
__log__.debug('Saved %d more bytes', len(result.bytes))
if progress_callback:
progress_callback(f.tell(), file_size)
finally:
if client != self:
await client.disconnect()
if cdn_decrypter:
await cdn_decrypter.client.disconnect()
if sender != self._sender:
await sender.disconnect()
if isinstance(file, str) or in_memory:
f.close()