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import asyncio |
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import logging |
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from typing import Dict, Union |
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from FileStream.bot import work_loads |
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from pyrogram import Client, utils, raw |
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from .file_properties import get_file_ids |
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from pyrogram.session import Session, Auth |
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from pyrogram.errors import AuthBytesInvalid |
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from pyrogram.file_id import FileId, FileType, ThumbnailSource |
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from pyrogram.types import Message |
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class ByteStreamer: |
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def __init__(self, client: Client): |
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self.clean_timer = 30 * 60 |
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self.client: Client = client |
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self.cached_file_ids: Dict[str, FileId] = {} |
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asyncio.create_task(self.clean_cache()) |
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|
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async def get_file_properties(self, db_id: str, multi_clients) -> FileId: |
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""" |
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Returns the properties of a media of a specific message in a FIleId class. |
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if the properties are cached, then it'll return the cached results. |
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or it'll generate the properties from the Message ID and cache them. |
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""" |
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if not db_id in self.cached_file_ids: |
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logging.debug("Before Calling generate_file_properties") |
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await self.generate_file_properties(db_id, multi_clients) |
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logging.debug(f"Cached file properties for file with ID {db_id}") |
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return self.cached_file_ids[db_id] |
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async def generate_file_properties(self, db_id: str, multi_clients) -> FileId: |
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""" |
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Generates the properties of a media file on a specific message. |
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returns ths properties in a FIleId class. |
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""" |
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logging.debug("Before calling get_file_ids") |
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file_id = await get_file_ids(self.client, db_id, multi_clients, Message) |
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logging.debug(f"Generated file ID and Unique ID for file with ID {db_id}") |
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self.cached_file_ids[db_id] = file_id |
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logging.debug(f"Cached media file with ID {db_id}") |
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return self.cached_file_ids[db_id] |
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async def generate_media_session(self, client: Client, file_id: FileId) -> Session: |
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""" |
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Generates the media session for the DC that contains the media file. |
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This is required for getting the bytes from Telegram servers. |
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""" |
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media_session = client.media_sessions.get(file_id.dc_id, None) |
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|
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if media_session is None: |
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if file_id.dc_id != await client.storage.dc_id(): |
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media_session = Session( |
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client, |
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file_id.dc_id, |
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await Auth( |
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client, file_id.dc_id, await client.storage.test_mode() |
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).create(), |
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await client.storage.test_mode(), |
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is_media=True, |
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) |
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await media_session.start() |
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for _ in range(6): |
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exported_auth = await client.invoke( |
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raw.functions.auth.ExportAuthorization(dc_id=file_id.dc_id) |
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) |
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try: |
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await media_session.invoke( |
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raw.functions.auth.ImportAuthorization( |
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id=exported_auth.id, bytes=exported_auth.bytes |
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) |
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) |
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break |
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except AuthBytesInvalid: |
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logging.debug( |
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f"Invalid authorization bytes for DC {file_id.dc_id}" |
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) |
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continue |
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else: |
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await media_session.stop() |
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raise AuthBytesInvalid |
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else: |
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media_session = Session( |
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client, |
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file_id.dc_id, |
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await client.storage.auth_key(), |
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await client.storage.test_mode(), |
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is_media=True, |
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) |
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await media_session.start() |
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logging.debug(f"Created media session for DC {file_id.dc_id}") |
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client.media_sessions[file_id.dc_id] = media_session |
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else: |
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logging.debug(f"Using cached media session for DC {file_id.dc_id}") |
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return media_session |
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@staticmethod |
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async def get_location(file_id: FileId) -> Union[raw.types.InputPhotoFileLocation, |
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raw.types.InputDocumentFileLocation, |
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raw.types.InputPeerPhotoFileLocation,]: |
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""" |
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Returns the file location for the media file. |
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""" |
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file_type = file_id.file_type |
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if file_type == FileType.CHAT_PHOTO: |
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if file_id.chat_id > 0: |
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peer = raw.types.InputPeerUser( |
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user_id=file_id.chat_id, access_hash=file_id.chat_access_hash |
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) |
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else: |
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if file_id.chat_access_hash == 0: |
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peer = raw.types.InputPeerChat(chat_id=-file_id.chat_id) |
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else: |
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peer = raw.types.InputPeerChannel( |
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channel_id=utils.get_channel_id(file_id.chat_id), |
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access_hash=file_id.chat_access_hash, |
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) |
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location = raw.types.InputPeerPhotoFileLocation( |
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peer=peer, |
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volume_id=file_id.volume_id, |
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local_id=file_id.local_id, |
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big=file_id.thumbnail_source == ThumbnailSource.CHAT_PHOTO_BIG, |
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) |
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elif file_type == FileType.PHOTO: |
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location = raw.types.InputPhotoFileLocation( |
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id=file_id.media_id, |
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access_hash=file_id.access_hash, |
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file_reference=file_id.file_reference, |
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thumb_size=file_id.thumbnail_size, |
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) |
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else: |
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location = raw.types.InputDocumentFileLocation( |
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id=file_id.media_id, |
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access_hash=file_id.access_hash, |
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file_reference=file_id.file_reference, |
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thumb_size=file_id.thumbnail_size, |
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) |
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return location |
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async def yield_file( |
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self, |
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file_id: FileId, |
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index: int, |
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offset: int, |
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first_part_cut: int, |
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last_part_cut: int, |
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part_count: int, |
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chunk_size: int, |
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) -> Union[str, None]: |
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""" |
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Custom generator that yields the bytes of the media file. |
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Modded from <https://github.com/eyaadh/megadlbot_oss/blob/master/mega/telegram/utils/custom_download.py#L20> |
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Thanks to Eyaadh <https://github.com/eyaadh> |
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""" |
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client = self.client |
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work_loads[index] += 1 |
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logging.debug(f"Starting to yielding file with client {index}.") |
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media_session = await self.generate_media_session(client, file_id) |
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current_part = 1 |
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location = await self.get_location(file_id) |
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try: |
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r = await media_session.invoke( |
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raw.functions.upload.GetFile( |
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location=location, offset=offset, limit=chunk_size |
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), |
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) |
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if isinstance(r, raw.types.upload.File): |
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while True: |
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chunk = r.bytes |
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if not chunk: |
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break |
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elif part_count == 1: |
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yield chunk[first_part_cut:last_part_cut] |
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elif current_part == 1: |
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yield chunk[first_part_cut:] |
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elif current_part == part_count: |
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yield chunk[:last_part_cut] |
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else: |
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yield chunk |
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current_part += 1 |
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offset += chunk_size |
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if current_part > part_count: |
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break |
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r = await media_session.invoke( |
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raw.functions.upload.GetFile( |
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location=location, offset=offset, limit=chunk_size |
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), |
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) |
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except (TimeoutError, AttributeError): |
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pass |
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finally: |
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logging.debug(f"Finished yielding file with {current_part} parts.") |
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work_loads[index] -= 1 |
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async def clean_cache(self) -> None: |
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""" |
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function to clean the cache to reduce memory usage |
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""" |
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while True: |
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await asyncio.sleep(self.clean_timer) |
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self.cached_file_ids.clear() |
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logging.debug("Cleaned the cache") |
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