mirror of
https://github.com/alexta69/metube.git
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290 lines
11 KiB
Python
290 lines
11 KiB
Python
import os
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import yt_dlp
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from collections import OrderedDict
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import shelve
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import time
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import asyncio
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import multiprocessing
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import logging
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from dl_formats import get_format, get_opts
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log = logging.getLogger('ytdl')
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class DownloadQueueNotifier:
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async def added(self, dl):
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raise NotImplementedError
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async def updated(self, dl):
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raise NotImplementedError
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async def completed(self, dl):
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raise NotImplementedError
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async def canceled(self, id):
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raise NotImplementedError
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async def cleared(self, id):
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raise NotImplementedError
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class DownloadInfo:
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def __init__(self, id, title, url, quality, format):
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self.id, self.title, self.url = id, title, url
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self.quality = quality
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self.format = format
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self.status = self.msg = self.percent = self.speed = self.eta = None
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self.filename = None
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self.timestamp = time.time_ns()
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class Download:
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manager = None
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def __init__(self, download_dir, output_template, quality, format, ytdl_opts, info):
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self.download_dir = download_dir
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self.output_template = output_template
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self.format = get_format(format, quality)
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self.ytdl_opts = get_opts(format, quality, ytdl_opts)
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self.info = info
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self.canceled = False
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self.tmpfilename = None
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self.status_queue = None
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self.proc = None
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self.loop = None
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self.notifier = None
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def _download(self):
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try:
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def put_status(st):
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self.status_queue.put({k: v for k, v in st.items() if k in (
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'tmpfilename',
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'filename',
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'status',
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'msg',
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'total_bytes',
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'total_bytes_estimate',
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'downloaded_bytes',
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'speed',
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'eta',
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)})
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def put_status_postprocessor(d):
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if d['postprocessor'] == 'MoveFiles' and d['status'] == 'finished':
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self.status_queue.put({'status': 'finished', 'filename': d['info_dict']['filepath']})
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ret = yt_dlp.YoutubeDL(params={
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'quiet': True,
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'no_color': True,
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#'skip_download': True,
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'outtmpl': os.path.join(self.download_dir, self.output_template),
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'format': self.format,
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'cachedir': False,
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'socket_timeout': 30,
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'progress_hooks': [put_status],
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'postprocessor_hooks': [put_status_postprocessor],
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**self.ytdl_opts,
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}).download([self.info.url])
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self.status_queue.put({'status': 'finished' if ret == 0 else 'error'})
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except yt_dlp.utils.YoutubeDLError as exc:
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self.status_queue.put({'status': 'error', 'msg': str(exc)})
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async def start(self, notifier):
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if Download.manager is None:
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Download.manager = multiprocessing.Manager()
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self.status_queue = Download.manager.Queue()
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self.proc = multiprocessing.Process(target=self._download)
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self.proc.start()
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self.loop = asyncio.get_running_loop()
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self.notifier = notifier
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self.info.status = 'preparing'
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await self.notifier.updated(self.info)
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asyncio.create_task(self.update_status())
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return await self.loop.run_in_executor(None, self.proc.join)
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def cancel(self):
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if self.running():
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self.proc.kill()
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self.canceled = True
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def close(self):
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if self.started():
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self.proc.close()
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self.status_queue.put(None)
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def running(self):
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try:
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return self.proc is not None and self.proc.is_alive()
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except ValueError:
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return False
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def started(self):
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return self.proc is not None
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async def update_status(self):
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while True:
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status = await self.loop.run_in_executor(None, self.status_queue.get)
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if status is None:
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return
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self.tmpfilename = status.get('tmpfilename')
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if 'filename' in status:
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self.info.filename = os.path.relpath(status.get('filename'), self.download_dir)
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self.info.status = status['status']
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self.info.msg = status.get('msg')
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if 'downloaded_bytes' in status:
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total = status.get('total_bytes') or status.get('total_bytes_estimate')
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if total:
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self.info.percent = status['downloaded_bytes'] / total * 100
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self.info.speed = status.get('speed')
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self.info.eta = status.get('eta')
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await self.notifier.updated(self.info)
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class PersistentQueue:
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def __init__(self, path):
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self.path = path
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with shelve.open(path, 'c'):
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pass
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self.dict = OrderedDict()
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def load(self):
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for k, v in self.saved_items():
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self.dict[k] = Download(None, None, None, None, {}, v)
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def exists(self, key):
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return key in self.dict
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def get(self, key):
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return self.dict[key]
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def items(self):
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return self.dict.items()
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def saved_items(self):
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with shelve.open(self.path, 'r') as shelf:
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return sorted(shelf.items(), key=lambda item: item[1].timestamp)
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def put(self, value):
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key = value.info.id
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self.dict[key] = value
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with shelve.open(self.path, 'w') as shelf:
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shelf[key] = value.info
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def delete(self, key):
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del self.dict[key]
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with shelve.open(self.path, 'w') as shelf:
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shelf.pop(key)
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def next(self):
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k, v = next(iter(self.dict.items()))
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return k, v
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def empty(self):
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return not bool(self.dict)
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class DownloadQueue:
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def __init__(self, config, notifier):
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self.config = config
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self.notifier = notifier
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self.queue = PersistentQueue(self.config.STATE_DIR + '/queue')
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self.done = PersistentQueue(self.config.STATE_DIR + '/completed')
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self.done.load()
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async def __import_queue(self):
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for k, v in self.queue.saved_items():
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await self.add(v.url, v.quality, v.format)
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async def initialize(self):
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self.event = asyncio.Event()
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asyncio.create_task(self.__download())
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asyncio.create_task(self.__import_queue())
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def __extract_info(self, url):
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return yt_dlp.YoutubeDL(params={
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'quiet': True,
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'no_color': True,
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'extract_flat': True,
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**self.config.YTDL_OPTIONS,
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}).extract_info(url, download=False)
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async def __add_entry(self, entry, quality, format, already):
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etype = entry.get('_type') or 'video'
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if etype == 'playlist':
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entries = entry['entries']
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log.info(f'playlist detected with {len(entries)} entries')
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results = []
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for etr in entries:
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results.append(await self.__add_entry(etr, quality, format, already))
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if any(res['status'] == 'error' for res in results):
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return {'status': 'error', 'msg': ', '.join(res['msg'] for res in results if res['status'] == 'error' and 'msg' in res)}
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return {'status': 'ok'}
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elif etype == 'video' or etype.startswith('url') and 'id' in entry and 'title' in entry:
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if not self.queue.exists(entry['id']):
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dl = DownloadInfo(entry['id'], entry['title'], entry.get('webpage_url') or entry['url'], quality, format)
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dldirectory = self.config.DOWNLOAD_DIR if (quality != 'audio' and format != 'mp3') else self.config.AUDIO_DOWNLOAD_DIR
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self.queue.put(Download(dldirectory, self.config.OUTPUT_TEMPLATE, quality, format, self.config.YTDL_OPTIONS, dl))
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self.event.set()
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await self.notifier.added(dl)
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return {'status': 'ok'}
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elif etype.startswith('url'):
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return await self.add(entry['url'], quality, format, already)
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return {'status': 'error', 'msg': f'Unsupported resource "{etype}"'}
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async def add(self, url, quality, format, already=None):
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log.info(f'adding {url}')
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already = set() if already is None else already
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if url in already:
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log.info('recursion detected, skipping')
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return {'status': 'ok'}
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else:
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already.add(url)
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try:
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entry = await asyncio.get_running_loop().run_in_executor(None, self.__extract_info, url)
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except yt_dlp.utils.YoutubeDLError as exc:
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return {'status': 'error', 'msg': str(exc)}
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return await self.__add_entry(entry, quality, format, already)
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async def cancel(self, ids):
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for id in ids:
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if not self.queue.exists(id):
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log.warn(f'requested cancel for non-existent download {id}')
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continue
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if self.queue.get(id).started():
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self.queue.get(id).cancel()
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else:
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self.queue.delete(id)
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await self.notifier.canceled(id)
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return {'status': 'ok'}
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async def clear(self, ids):
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for id in ids:
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if not self.done.exists(id):
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log.warn(f'requested delete for non-existent download {id}')
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continue
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self.done.delete(id)
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await self.notifier.cleared(id)
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return {'status': 'ok'}
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def get(self):
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return(list((k, v.info) for k, v in self.queue.items()),
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list((k, v.info) for k, v in self.done.items()))
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async def __download(self):
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while True:
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while self.queue.empty():
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log.info('waiting for item to download')
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await self.event.wait()
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self.event.clear()
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id, entry = self.queue.next()
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log.info(f'downloading {entry.info.title}')
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await entry.start(self.notifier)
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if entry.info.status != 'finished':
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if entry.tmpfilename and os.path.isfile(entry.tmpfilename):
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try:
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os.remove(entry.tmpfilename)
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except:
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pass
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entry.info.status = 'error'
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entry.close()
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if self.queue.exists(id):
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self.queue.delete(id)
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if entry.canceled:
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await self.notifier.canceled(id)
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else:
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self.done.put(entry)
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await self.notifier.completed(entry.info)
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