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https://github.com/LonamiWebs/Telethon.git
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Improve upload_file by properly supporting streaming files
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Lonami Exo
parent
bfb8de2736
commit
de17a19168
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@ -5,7 +5,6 @@ import os
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import pathlib
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import re
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import typing
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import inspect
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from io import BytesIO
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from ..crypto import AES
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@ -95,6 +94,7 @@ class UploadMethods:
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*,
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caption: typing.Union[str, typing.Sequence[str]] = None,
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force_document: bool = False,
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file_size: int = None,
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clear_draft: bool = False,
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progress_callback: 'hints.ProgressCallback' = None,
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reply_to: 'hints.MessageIDLike' = None,
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@ -175,6 +175,13 @@ class UploadMethods:
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the extension of an image file or a video file, it will be
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sent as such. Otherwise always as a document.
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file_size (`int`, optional):
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The size of the file to be uploaded if it needs to be uploaded,
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which will be determined automatically if not specified.
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If the file size can't be determined beforehand, the entire
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file will be read in-memory to find out how large it is.
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clear_draft (`bool`, optional):
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Whether the existing draft should be cleared or not.
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@ -358,6 +365,7 @@ class UploadMethods:
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file_handle, media, image = await self._file_to_media(
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file, force_document=force_document,
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file_size=file_size,
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progress_callback=progress_callback,
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attributes=attributes, allow_cache=allow_cache, thumb=thumb,
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voice_note=voice_note, video_note=video_note,
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@ -449,6 +457,7 @@ class UploadMethods:
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file: 'hints.FileLike',
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*,
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part_size_kb: float = None,
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file_size: int = None,
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file_name: str = None,
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use_cache: type = None,
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key: bytes = None,
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@ -480,6 +489,13 @@ class UploadMethods:
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Chunk size when uploading files. The larger, the less
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requests will be made (up to 512KB maximum).
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file_size (`int`, optional):
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The size of the file to be uploaded, which will be determined
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automatically if not specified.
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If the file size can't be determined beforehand, the entire
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file will be read in-memory to find out how large it is.
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file_name (`str`, optional):
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The file name which will be used on the resulting InputFile.
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If not specified, the name will be taken from the ``file``
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@ -527,34 +543,42 @@ class UploadMethods:
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if not file_name and getattr(file, 'name', None):
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file_name = file.name
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if isinstance(file, str):
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if file_size is not None:
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pass # do nothing as it's already kwown
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elif isinstance(file, str):
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file_size = os.path.getsize(file)
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stream = open(file, 'rb')
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close_stream = True
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elif isinstance(file, bytes):
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file_size = len(file)
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stream = io.BytesIO(file)
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close_stream = True
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else:
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# `aiofiles` shouldn't base `IOBase` because they change the
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# methods' definition. `seekable` would be `async` but since
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# we won't get to check that, there's no need to maybe-await.
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if isinstance(file, io.IOBase) and file.seekable():
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pos = file.tell()
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if not callable(getattr(file, 'read', None)):
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raise TypeError('file description should have a `read` method')
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if callable(getattr(file, 'seekable', None)):
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seekable = await helpers._maybe_await(file.seekable())
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else:
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pos = None
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seekable = False
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# TODO Don't load the entire file in memory always
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data = file.read()
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if inspect.isawaitable(data):
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data = await data
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if seekable:
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pos = await helpers._maybe_await(file.tell())
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await helpers._maybe_await(file.seek(0, os.SEEK_END))
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file_size = await helpers._maybe_await(file.tell())
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await helpers._maybe_await(file.seek(pos, os.SEEK_SET))
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if pos is not None:
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file.seek(pos)
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stream = file
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close_stream = False
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else:
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self._log[__name__].warning(
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'Could not determine file size beforehand so the entire '
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'file will be read in-memory')
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if not isinstance(data, bytes):
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raise TypeError(
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'file descriptor returned {}, not bytes (you must '
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'open the file in bytes mode)'.format(type(data)))
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file = data
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file_size = len(file)
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data = await helpers._maybe_await(file.read())
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stream = io.BytesIO(data)
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close_stream = True
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file_size = len(data)
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# File will now either be a string or bytes
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if not part_size_kb:
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@ -584,35 +608,46 @@ class UploadMethods:
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# Determine whether the file is too big (over 10MB) or not
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# Telegram does make a distinction between smaller or larger files
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is_large = file_size > 10 * 1024 * 1024
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is_big = file_size > 10 * 1024 * 1024
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hash_md5 = hashlib.md5()
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if not is_large:
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# Calculate the MD5 hash before anything else.
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# As this needs to be done always for small files,
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# might as well do it before anything else and
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# check the cache.
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if isinstance(file, str):
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with open(file, 'rb') as stream:
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file = stream.read()
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hash_md5.update(file)
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part_count = (file_size + part_size - 1) // part_size
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self._log[__name__].info('Uploading file of %d bytes in %d chunks of %d',
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file_size, part_count, part_size)
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with open(file, 'rb') if isinstance(file, str) else BytesIO(file)\
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as stream:
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pos = 0
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try:
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for part_index in range(part_count):
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# Read the file by in chunks of size part_size
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part = stream.read(part_size)
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part = await helpers._maybe_await(stream.read(part_size))
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# encryption part if needed
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if not isinstance(part, bytes):
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raise TypeError(
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'file descriptor returned {}, not bytes (you must '
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'open the file in bytes mode)'.format(type(part)))
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# `file_size` could be wrong in which case `part` may not be
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# `part_size` before reaching the end.
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if len(part) != part_size and part_index < part_count - 1:
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raise ValueError(
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'read less than {} before reaching the end; either '
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'`file_size` or `read` are wrong'.format(part_size))
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pos += len(part)
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if not is_big:
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# Bit odd that MD5 is only needed for small files and not
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# big ones with more chance for corruption, but that's
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# what Telegram wants.
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hash_md5.update(part)
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# Encryption part if needed
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if key and iv:
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part = AES.encrypt_ige(part, key, iv)
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# The SavePartRequest is different depending on whether
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# the file is too large or not (over or less than 10MB)
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if is_large:
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if is_big:
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request = functions.upload.SaveBigFilePartRequest(
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file_id, part_index, part_count, part)
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else:
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@ -624,14 +659,15 @@ class UploadMethods:
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self._log[__name__].debug('Uploaded %d/%d',
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part_index + 1, part_count)
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if progress_callback:
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r = progress_callback(stream.tell(), file_size)
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if inspect.isawaitable(r):
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await r
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await helpers._maybe_await(progress_callback(pos, file_size))
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else:
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raise RuntimeError(
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'Failed to upload file part {}.'.format(part_index))
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finally:
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if close_stream:
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await helpers._maybe_await(stream.close())
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if is_large:
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if is_big:
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return types.InputFileBig(file_id, part_count, file_name)
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else:
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return custom.InputSizedFile(
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@ -641,7 +677,7 @@ class UploadMethods:
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# endregion
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async def _file_to_media(
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self, file, force_document=False,
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self, file, force_document=False, file_size=None,
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progress_callback=None, attributes=None, thumb=None,
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allow_cache=True, voice_note=False, video_note=False,
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supports_streaming=False, mime_type=None, as_image=None):
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@ -686,6 +722,7 @@ class UploadMethods:
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elif not isinstance(file, str) or os.path.isfile(file):
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file_handle = await self.upload_file(
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_resize_photo_if_needed(file, as_image),
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file_size=file_size,
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progress_callback=progress_callback
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)
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elif re.match('https?://', file):
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@ -725,7 +762,7 @@ class UploadMethods:
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else:
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if isinstance(thumb, pathlib.Path):
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thumb = str(thumb.absolute())
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thumb = await self.upload_file(thumb)
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thumb = await self.upload_file(thumb, file_size=file_size)
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media = types.InputMediaUploadedDocument(
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file=file_handle,
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@ -3,6 +3,7 @@ import asyncio
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import enum
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import os
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import struct
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import inspect
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from hashlib import sha1
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@ -107,6 +108,13 @@ def retry_range(retries):
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yield 1 + attempt
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async def _maybe_await(value):
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if inspect.isawaitable(value):
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return await value
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else:
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return value
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async def _cancel(log, **tasks):
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"""
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Helper to cancel one or more tasks gracefully, logging exceptions.
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