Files
BiliNote/backend/app/services/proxy_config_manager.py
huangjianwu 41f17592c2 fix(backend): 部署韧性——模型自愈/就绪门禁/全局代理/启动诊断
- whisper: model.bin 截断/损坏时删目录重下重试一次,修「Unable to
  open file model.bin」死循环;mlx 同样按 config.json 判完整性
- /generate_note 加就绪门禁:本地转写引擎模型没下好直接拦截,返回
  reason=transcriber_model_not_ready,不让任务静默卡在首次下载
- 全局代理:新增 ProxyConfigManager(JSON 配置 + HTTP_PROXY env 兜底)
  + build_openai_client,统一注入代理到 LLM/Groq 客户端;yt-dlp 与
  youtube-transcript-api 也走代理
- build_openai_client 校验 api_key 非空,空 key 给「xxx 的 API Key
  未配置」而不是天书般的 Illegal header value b'Bearer '
- universal_gpt: 模型拒绝自定义 temperature(o1/o3/gpt-5 系列)时
  就地去掉参数重试,不消耗重试预算
- connect_test 改用真实 chat completion 而非 /v1/models 探测
- main.py: lifespan 拆 [startup 1/5..5/5] 分段日志 + 异常清晰定位
- /sys_health 重构为结构化返回 {backend,ffmpeg,db,whisper_model}

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-14 19:01:14 +08:00

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import json
import os
from pathlib import Path
from typing import Any, Dict, Optional
class ProxyConfigManager:
"""全局代理配置,存 JSON 文件,支持前端动态修改。
作用范围LLM API + 转写 APIGroq 等)+ yt-dlp 视频下载。
优先级:配置文件里 enabled=true 的 url > 环境变量 HTTP_PROXY/HTTPS_PROXY/ALL_PROXY。
这样桌面端/web 用户在设置页填docker/服务器部署用环境变量兜底。
"""
def __init__(self, filepath: str = "config/proxy.json"):
self.path = Path(filepath)
self.path.parent.mkdir(parents=True, exist_ok=True)
def _read(self) -> Dict[str, Any]:
if not self.path.exists():
return {}
try:
with self.path.open("r", encoding="utf-8") as f:
return json.load(f)
except Exception:
return {}
def _write(self, data: Dict[str, Any]):
with self.path.open("w", encoding="utf-8") as f:
json.dump(data, f, ensure_ascii=False, indent=2)
def get_config(self) -> Dict[str, Any]:
data = self._read()
return {
"enabled": bool(data.get("enabled", False)),
"url": data.get("url", "") or "",
}
def update_config(self, enabled: bool, url: Optional[str] = None) -> Dict[str, Any]:
data = self._read()
data["enabled"] = bool(enabled)
if url is not None:
data["url"] = url.strip()
self._write(data)
return self.get_config()
def get_proxy_url(self) -> Optional[str]:
"""返回当前生效的代理 URL没有则 None。
- 配置文件 enabled=true 且 url 非空 → 用配置的 url
- 否则回退到环境变量(标准的 HTTP_PROXY / HTTPS_PROXY / ALL_PROXY大小写都认
"""
cfg = self.get_config()
if cfg["enabled"] and cfg["url"]:
return cfg["url"]
for key in ("HTTPS_PROXY", "https_proxy", "HTTP_PROXY", "http_proxy", "ALL_PROXY", "all_proxy"):
val = os.environ.get(key)
if val:
return val
return None