优化代理相关, 移除旧的死代码

core/douyu/proxy_fetcher.py

@@ -1,9 +1,9 @@
-"""简化版代理获取器（替代 ProxyManager）。
+"""简化版代理获取器。
 
 专为短效代理设计：无池、无冷却、无复用。
 每次调用 fetch_new_proxy() 从 API 取 1 个新代理，用完即弃。
 
-线程安全：白名单同步有全局锁 + IP缓存避免重复同步。
+线程安全：白名单同步有全局锁 + 标志位避免重复同步。
 """
 
 import threading
@@ -26,31 +26,30 @@ class ProxyFetcher:
     ):
         self.api_url = api_url
 
-        _wl_platform = whitelist_platform or "xiequ"
-        _wl_credentials = whitelist_credentials
-
         self._whitelist_syncer = (
-            DouyuWhitelistSyncer(platform=_wl_platform, credentials=_wl_credentials)
-            if _wl_credentials
+            DouyuWhitelistSyncer(
+                platform=whitelist_platform or "xiequ",
+                credentials=whitelist_credentials,
+            )
+            if whitelist_credentials
             else None
         )
-        # 跨线程共享：已同步白名单的IP，避免5个线程重复同步同一个IP
-        self._synced_ip: Optional[str] = None
+        # 跨线程共享：是否已同步过白名单，避免多线程重复同步
+        self._synced = False
         self._sync_lock = threading.Lock()
 
     def fetch_new_proxy(self, max_attempts: int = 3) -> Optional[str]:
         """从代理 API 获取 1 个可用代理，失败返回 None。"""
-        # 快速检查：是否已经同步过白名单
-        skip_sync = False
         if self._whitelist_syncer:
             with self._sync_lock:
-                if self._synced_ip:
-                    skip_sync = True
+                already_synced = self._synced
+        else:
+            already_synced = False
 
         resolver = ProxyResolver(
             api_url=self.api_url,
             whitelist_syncer=self._whitelist_syncer,
-            sync_local_exit_ip=bool(self._whitelist_syncer) and not skip_sync,
+            sync_local_exit_ip=bool(self._whitelist_syncer) and not already_synced,
             sync_whitelist_once=False,
         )
         result, msg = resolver.fetch_verified(
@@ -58,10 +57,9 @@ class ProxyFetcher:
             return_all=False,
         )
 
-        # 记录已同步的IP
         if self._whitelist_syncer and result:
             with self._sync_lock:
-                self._synced_ip = self._synced_ip or "done"
+                self._synced = True
 
         if isinstance(result, str):
             logger.info(f"获取新代理: {result}")