126 lines
5.2 KiB
Python
126 lines
5.2 KiB
Python
from typing import Dict, List, Union
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from cachetools import cached, TTLCache
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from app.chain import ChainBase
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from app.core.config import settings
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from app.core.context import TorrentInfo, Context, MediaInfo
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from app.core.metainfo import MetaInfo
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from app.db import SessionFactory
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from app.db.systemconfig_oper import SystemConfigOper
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from app.helper.sites import SitesHelper
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from app.log import logger
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from app.schemas import Notification
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from app.schemas.types import SystemConfigKey, MessageChannel
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from app.utils.singleton import Singleton
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from app.utils.string import StringUtils
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class TorrentsChain(ChainBase, metaclass=Singleton):
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"""
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站点首页种子处理链，服务于订阅、刷流等
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"""
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_cache_file = "__torrents_cache__"
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def __init__(self):
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self._db = SessionFactory()
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super().__init__(self._db)
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self.siteshelper = SitesHelper()
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self.systemconfig = SystemConfigOper()
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def remote_refresh(self, channel: MessageChannel, userid: Union[str, int] = None):
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"""
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远程刷新订阅，发送消息
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"""
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self.post_message(Notification(channel=channel,
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title=f"开始刷新种子 ...", userid=userid))
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self.refresh()
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self.post_message(Notification(channel=channel,
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title=f"种子刷新完成！", userid=userid))
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def get_torrents(self) -> Dict[str, List[Context]]:
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"""
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获取当前缓存的种子
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"""
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# 读取缓存
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return self.load_cache(self._cache_file) or {}
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@cached(cache=TTLCache(maxsize=128, ttl=600))
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def browse(self, domain: str) -> List[TorrentInfo]:
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"""
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浏览站点首页内容，返回种子清单，TTL缓存10分钟
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:param domain: 站点域名
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"""
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logger.info(f'开始获取站点 {domain} 最新种子 ...')
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site = self.siteshelper.get_indexer(domain)
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if not site:
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logger.error(f'站点 {domain} 不存在！')
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return []
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return self.refresh_torrents(site=site)
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def refresh(self) -> Dict[str, List[Context]]:
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"""
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刷新站点最新资源，识别并缓存起来
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"""
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# 读取缓存
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torrents_cache = self.get_torrents()
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# 所有站点索引
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indexers = self.siteshelper.get_indexers()
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# 配置的Rss站点
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config_indexers = [str(sid) for sid in self.systemconfig.get(SystemConfigKey.RssSites) or []]
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# 遍历站点缓存资源
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for indexer in indexers:
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# 未开启的站点不搜索
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if config_indexers and str(indexer.get("id")) not in config_indexers:
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continue
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domain = StringUtils.get_url_domain(indexer.get("domain"))
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torrents: List[TorrentInfo] = self.browse(domain=domain)
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# 按pubdate降序排列
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torrents.sort(key=lambda x: x.pubdate or '', reverse=True)
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# 取前N条
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torrents = torrents[:settings.CACHE_CONF.get('refresh')]
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if torrents:
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# 过滤出没有处理过的种子
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torrents = [torrent for torrent in torrents
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if f'{torrent.title}{torrent.description}'
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not in [f'{t.torrent_info.title}{t.torrent_info.description}'
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for t in torrents_cache.get(domain) or []]]
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if torrents:
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logger.info(f'{indexer.get("name")} 有 {len(torrents)} 个新种子')
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else:
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logger.info(f'{indexer.get("name")} 没有新种子')
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continue
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for torrent in torrents:
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logger.info(f'处理资源：{torrent.title} ...')
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# 识别
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meta = MetaInfo(title=torrent.title, subtitle=torrent.description)
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# 识别媒体信息
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mediainfo: MediaInfo = self.recognize_media(meta=meta)
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if not mediainfo:
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logger.warn(f'未识别到媒体信息，标题：{torrent.title}')
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# 存储空的媒体信息
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mediainfo = MediaInfo()
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# 清理多余数据
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mediainfo.clear()
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# 上下文
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context = Context(meta_info=meta, media_info=mediainfo, torrent_info=torrent)
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# 添加到缓存
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if not torrents_cache.get(domain):
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torrents_cache[domain] = [context]
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else:
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torrents_cache[domain].append(context)
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# 如果超过了限制条数则移除掉前面的
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if len(torrents_cache[domain]) > settings.CACHE_CONF.get('torrents'):
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torrents_cache[domain] = torrents_cache[domain][-settings.CACHE_CONF.get('torrents'):]
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# 回收资源
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del torrents
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else:
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logger.info(f'{indexer.get("name")} 没有获取到种子')
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# 保存缓存到本地
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self.save_cache(torrents_cache, self._cache_file)
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# 返回
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return torrents_cache
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