This repository has been archived on 2026-10-02. You can view files and clone it. You cannot open issues or pull requests or push a commit.
Files
NeteaseUrl/music_downloader/_http.py
T
snowy-yang 6288a98ecc refactor: 拆分 4 个巨石模块为包,清理过时注释并删除作废文档
为什么:单文件 1100~1900 行的巨石模块让「改一处要通读全文」;同时注释里残留
大量已删台账的编号,以及「Flask/FastAPI 双栈迁移期」这类已失实的架构描述,
会误导后来者按不复存在的架构去改代码。

拆分(对外导入路径不变,行为零变更):
- music_downloader.py  -> music_downloader/(models/downloader/cover/_http/_log/_concurrency)
- auth_system.py       -> auth_system/(db/security/users/credits/ledger/mail/cards/backup...)
- music_api.py         -> music_api/(api/client/crypto/qr/cookies/compat/constants/errors)
- services/runtime.py  -> services/(api_service/_shared/_taskcore/downloads/batch/podcast/
  streaming/tasks);services/runtime.py 保留为兼容门面

兼容性做法:各包用 __init__.py 以 __all__ 原样再导出全部符号,既有调用点
(auth_system.xxx / services.xxx / from music_api import Y)零改动;路径常量改为经包属性
动态读取(auth_system.DB_PATH),否则测试的 monkeypatch 会静默失效并写到生产库。

修复 9 处代码损伤(上一轮注释清理把 `()` 当「空括号残留」删掉所致;用「与拆分前逐字
等价」校验逐一定位,静态检查只会报出其中 4 处):
- core/config.py  ).strip() or '*'
- core/state.py   threading.Lock() x2
- qr_login.py     datetime.now() / .strip()
- music_downloader/downloader.py  .lower()
- services/podcast.py  set() / time.time() x2

清理与删除:
- 删除 部署文档.md / 功能介绍.md / README_私有包警告.txt
- 清理指向已删台账与文档的过时编号注释;把「迁移期 / 两栈 / 双框架 / 已迁移」等
  失实描述改写为现状描述(保留 `<-> Flask /path` 映射表等仍有价值的契约来源说明)
- _mkpkg.py:公开包剔除清单去掉已不存在的文档名;私有包警告改为自包含
- pyproject.toml:补 pythonpath = ["."],使裸跑 pytest 不再 import core 失败

验证:ruff 全通过;pyright 0 errors / 0 warnings(102 文件);pytest 144 passed;
真实 uvicorn 冒烟 6 条路由符合预期且生产 data/ 指纹未变;忽略注释的逐字等价性校验通过。
2026-09-26 12:37:48 +08:00

60 lines
2.0 KiB
Python
Raw Blame History

This file contains ambiguous Unicode characters
This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.
# -*- coding: utf-8 -*-
"""HTTP 会话复用与音频内容嗅探。
(自 music_downloader.py 拆出,行为与原实现一致。)
"""
from __future__ import annotations
import threading
from core import sync_http as requests # 同步门面(底层 aiohttp,替代 requests)
# ============ HTTP 连接复用(提速核心) ============
# 常见浏览器 UA,避免直链 CDN 因空 UA 限速/拒绝
DEFAULT_UA = (
"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 "
"(KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
)
# 音频流式下载分块大小(256KB):减少系统调用与磁盘 IO 次数,提升吞吐
DL_CHUNK_SIZE = 256 * 1024
# 线程本地 Session:同线程内复用 TCP/TLS 连接(keep-alive),批量并发显著提速
_SESSION_LOCAL = threading.local()
# 下载内容嗅探的音频魔数(未知期望尺寸时唯一的内容防线)
_AUDIO_MAGIC = (b'ID3', b'fLaC', b'OggS', b'RIFF')
def _sniff_audio_header(path) -> bool:
"""读取文件头做基础音频魔数校验:MP3(ID3/裸帧)、FLAC、OGG/Opus、WAV(RIFF)、
M4A/MP4(ftyp)。未知期望尺寸的下载走"非空即通过"保留口径,本函数补上内容
防线——CDN 错误页/风控 JSON 不再能被存成音频交付。"""
try:
with open(path, 'rb') as f:
head = f.read(16)
except OSError:
return False
if not head:
return False
if any(head.startswith(m) for m in _AUDIO_MAGIC):
return True
if len(head) >= 8 and head[:4] == b'\x00\x00\x00' and head[4:8] == b'ftyp':
return True
return len(head) >= 2 and head[0] == 0xFF and (head[1] & 0xE0) == 0xE0
def get_http_session() -> requests.Session:
"""获取当前线程的共享同步会话(连接池由底层 aiohttp 统一维护)。"""
session: requests.Session | None = getattr(_SESSION_LOCAL, "session", None)
if session is None:
session = requests.Session()
session.headers.update({"User-Agent": DEFAULT_UA})
_SESSION_LOCAL.session = session
return session