feat 种子缓存拆分为独立的模块

app/chain/torrents.py

@@ -0,0 +1,109 @@
+from typing import Dict, List, Union
+
+from requests import Session
+
+from app.chain import ChainBase
+from app.core.config import settings
+from app.core.context import TorrentInfo, Context, MediaInfo
+from app.core.metainfo import MetaInfo
+from app.db.systemconfig_oper import SystemConfigOper
+from app.helper.sites import SitesHelper
+from app.log import logger
+from app.schemas import Notification
+from app.schemas.types import SystemConfigKey, MessageChannel
+from app.utils.string import StringUtils
+
+
+class TorrentsChain(ChainBase):
+    """
+    种子刷新处理链
+    """
+
+    _cache_file = "__torrents_cache__"
+
+    def __init__(self, db: Session = None):
+        super().__init__(db)
+        self.siteshelper = SitesHelper()
+        self.systemconfig = SystemConfigOper(self._db)
+
+    def remote_refresh(self, channel: MessageChannel, userid: Union[str, int] = None):
+        """
+        远程刷新订阅，发送消息
+        """
+        self.post_message(Notification(channel=channel,
+                                       title=f"开始刷新种子 ...", userid=userid))
+        self.refresh()
+        self.post_message(Notification(channel=channel,
+                                       title=f"种子刷新完成！", userid=userid))
+
+    def get_torrents(self) -> Dict[str, List[Context]]:
+        """
+        获取当前缓存的种子
+        """
+        # 读取缓存
+        return self.load_cache(self._cache_file) or {}
+
+    def refresh(self) -> Dict[str, List[Context]]:
+        """
+        刷新站点最新资源
+        """
+        # 读取缓存
+        torrents_cache = self.get_torrents()
+
+        # 所有站点索引
+        indexers = self.siteshelper.get_indexers()
+        # 配置的索引站点
+        config_indexers = [str(sid) for sid in self.systemconfig.get(SystemConfigKey.IndexerSites) or []]
+        # 遍历站点缓存资源
+        for indexer in indexers:
+            # 未开启的站点不搜索
+            if config_indexers and str(indexer.get("id")) not in config_indexers:
+                continue
+            logger.info(f'开始刷新 {indexer.get("name")} 最新种子 ...')
+            domain = StringUtils.get_url_domain(indexer.get("domain"))
+            torrents: List[TorrentInfo] = self.refresh_torrents(site=indexer)
+            # 按pubdate降序排列
+            torrents.sort(key=lambda x: x.pubdate or '', reverse=True)
+            # 取前N条
+            torrents = torrents[:settings.CACHE_CONF.get('refresh')]
+            if torrents:
+                # 过滤出没有处理过的种子
+                torrents = [torrent for torrent in torrents
+                            if f'{torrent.title}{torrent.description}'
+                            not in [f'{t.torrent_info.title}{t.torrent_info.description}'
+                                    for t in torrents_cache.get(domain) or []]]
+                if torrents:
+                    logger.info(f'{indexer.get("name")} 有 {len(torrents)} 个新种子')
+                else:
+                    logger.info(f'{indexer.get("name")} 没有新种子')
+                    continue
+                for torrent in torrents:
+                    logger.info(f'处理资源：{torrent.title} ...')
+                    # 识别
+                    meta = MetaInfo(title=torrent.title, subtitle=torrent.description)
+                    # 识别媒体信息
+                    mediainfo: MediaInfo = self.recognize_media(meta=meta)
+                    if not mediainfo:
+                        logger.warn(f'未识别到媒体信息，标题：{torrent.title}')
+                        # 存储空的媒体信息
+                        mediainfo = MediaInfo()
+                    # 清理多余数据
+                    mediainfo.clear()
+                    # 上下文
+                    context = Context(meta_info=meta, media_info=mediainfo, torrent_info=torrent)
+                    # 添加到缓存
+                    if not torrents_cache.get(domain):
+                        torrents_cache[domain] = [context]
+                    else:
+                        torrents_cache[domain].append(context)
+                    # 如果超过了限制条数则移除掉前面的
+                    if len(torrents_cache[domain]) > settings.CACHE_CONF.get('torrents'):
+                        torrents_cache[domain] = torrents_cache[domain][-settings.CACHE_CONF.get('torrents'):]
+                # 回收资源
+                del torrents
+            else:
+                logger.info(f'{indexer.get("name")} 没有获取到种子')
+        # 保存缓存到本地
+        self.save_cache(torrents_cache, self._cache_file)
+        # 返回
+        return torrents_cache