Archived
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。
112 lines
4.6 KiB
Python
112 lines
4.6 KiB
Python
# -*- coding: utf-8 -*-
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"""结果交付端点。
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端点:
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- POST/GET /api/v1/download/result ↔ Flask /download/result(单曲)
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- POST/GET /api/v1/download/batch_zip/result ↔ Flask /download/batch_zip/result(批量 ZIP)
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语义对齐要点:
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- 任务归属:仅任务本人的站点账号可领取(非本人 403)
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- 状态语义:进行中 202 / 暂停 200+提示 / 取消 200+原因 / 失败 500+原因 /
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文件缺失 404(与历史分支逐一对应)
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- 交付物:FileResponse 流式发送;Cache-Control: no-store;
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X-Download-Filename(URL 编码,供前端取回原始文件名)
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- 文件清理仍由监控线程按 35 分钟保留期统一回收(交付请求不删文件)
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"""
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import asyncio
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import os
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from typing import Annotated, Any
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from urllib.parse import quote
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from fastapi import APIRouter, Depends, Request
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from fastapi.responses import FileResponse
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from core.state import DOWNLOAD_TASKS, DOWNLOAD_TASKS_LOCK
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from web.deps import SiteUser, require_login
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from web.request_utils import (
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request_data as _request_data,
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)
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from web.response import error
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router = APIRouter()
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LoginUser = Annotated[SiteUser, Depends(require_login)]
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def _owned_by(task: dict[str, Any], user: SiteUser) -> bool:
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return int(task.get('user_id') or 0) == int(user.id)
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def _file_response(target: str, filename: str, mimetype: str) -> FileResponse:
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resp = FileResponse(target, media_type=mimetype, filename=filename)
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resp.headers['Cache-Control'] = 'no-store'
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resp.headers['X-Download-Filename'] = quote(filename, safe='')
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return resp
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@router.api_route('/download/result', methods=['GET', 'POST'])
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async def download_result(user: LoginUser, request: Request):
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"""单曲下载结果:任务完成后流式返回文件。"""
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data = await _request_data(request)
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task_id = str(data.get('task_id') or '').strip()
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if not task_id:
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return error('缺少 task_id 参数')
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with DOWNLOAD_TASKS_LOCK:
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task = DOWNLOAD_TASKS.get(task_id)
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if not task or task.get('type') != 'single':
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return error('任务不存在或已过期', 404)
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if not _owned_by(task, user):
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return error('无权下载该任务', 403)
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status = task.get('status')
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if status in ('queued', 'running'):
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return error('任务还在进行中,请稍后再试', 202)
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if status == 'paused':
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return error('任务已暂停,请重新打开页面后恢复', 200)
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result = task.get('result') or {}
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target = result.get('zip_path') or result.get('file_path')
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target_exists = bool(target) and await asyncio.to_thread(os.path.exists, target)
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if status in ('canceled', 'error') and not target_exists:
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return error(task.get('msg') or ('任务已取消' if status == 'canceled' else '任务失败'),
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200 if status == 'canceled' else 500)
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if not target_exists:
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return error('文件不存在或已被清理', 404)
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filename = result.get('filename') or 'download'
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assert target is not None
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return _file_response(target, filename, result.get('mimetype') or 'application/octet-stream')
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@router.api_route('/download/batch_zip/result', methods=['GET', 'POST'])
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async def download_batch_zip_result(user: LoginUser, request: Request):
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"""批量打包结果:任务完成后流式返回 ZIP。"""
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data = await _request_data(request)
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task_id = str(data.get('task_id') or '').strip()
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if not task_id:
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return error('缺少 task_id 参数')
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with DOWNLOAD_TASKS_LOCK:
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task = DOWNLOAD_TASKS.get(task_id)
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if not task or task.get('type') != 'batch':
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return error('任务不存在或已过期', 404)
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if not _owned_by(task, user):
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return error('无权下载该任务', 403)
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status = task.get('status')
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result = task.get('result') or {}
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zip_path = result.get('zip_path')
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has_deliverable = bool(zip_path) and await asyncio.to_thread(os.path.exists, zip_path)
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if status in ('queued', 'running'):
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return error('任务还在进行中,请稍后再试', 202)
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if status == 'paused':
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return error('任务已暂停,请重新打开页面后恢复', 200)
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# 取消/失败但已有部分成果的任务,成果必须可领取
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if status in ('canceled', 'error') and not has_deliverable:
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return error(task.get('msg') or ('任务已取消' if status == 'canceled' else '任务失败'),
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200 if status == 'canceled' else 500)
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if not has_deliverable:
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return error('打包文件不存在或已被清理', 404)
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zip_name = result.get('filename') or '批量下载.zip'
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assert zip_path is not None
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return _file_response(zip_path, zip_name, 'application/zip')
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