80b96d236f
把原本散落在 /root/zikai 的 FastAPI 服务整理到 server/ 子目录， 开启独立 git 与 venv。运行时数据（config.yaml / keys / uploads） 按 .gitignore 留在工作目录但不入仓。
73 lines
2.6 KiB
Python
73 lines
2.6 KiB
Python
"""文件上传 / 列表 / 下载接口。"""
|
||
|
||
from __future__ import annotations
|
||
|
||
from pathlib import Path
|
||
|
||
from fastapi import APIRouter, Depends, File, HTTPException, UploadFile
|
||
from fastapi.responses import FileResponse
|
||
from sqlalchemy.orm import Session
|
||
|
||
from ..database import get_db
|
||
from ..dao.uploaded_file_dao import UploadedFileDAO
|
||
from ..schemas.file import FileListResponse, FileUploadResponse, UploadedFileOut
|
||
from ..services.upload_service import UploadService
|
||
|
||
router = APIRouter(prefix="/api/files", tags=["files"])
|
||
|
||
|
||
def _service(db: Session = Depends(get_db)) -> UploadService:
|
||
return UploadService(UploadedFileDAO(db))
|
||
|
||
|
||
@router.post(
|
||
"/upload",
|
||
response_model=FileUploadResponse,
|
||
summary="上传单个文件（流式，支持大文件）",
|
||
description=(
|
||
"multipart/form-data 上传，按 1 MiB 分片流式落盘，内存占用恒定；"
|
||
"落盘过程中计算 SHA-256 并入库。\n\n"
|
||
"极大或极慢的传输建议改用 SFTP（详见 README），HTTP 链路受 Apache 代理 300s 超时限制。"
|
||
),
|
||
)
|
||
async def upload_file(
|
||
file: UploadFile = File(..., description="要上传的文件"),
|
||
service: UploadService = Depends(_service),
|
||
) -> FileUploadResponse:
|
||
if not file.filename:
|
||
raise HTTPException(400, "请求缺少 'file' 字段")
|
||
return service.stream_to_disk(file, source="http", uploaded_by="anonymous")
|
||
|
||
|
||
@router.get("", response_model=FileListResponse, summary="列出已上传的文件")
|
||
def list_files(
|
||
limit: int = 100,
|
||
offset: int = 0,
|
||
service: UploadService = Depends(_service),
|
||
) -> FileListResponse:
|
||
total, items = service.list_files(limit=limit, offset=offset)
|
||
return FileListResponse(total=total, items=items)
|
||
|
||
|
||
@router.get("/{file_id}", response_model=UploadedFileOut, summary="查询单个文件元数据")
|
||
def get_file(file_id: int, service: UploadService = Depends(_service)) -> UploadedFileOut:
|
||
out = service.get_out(file_id)
|
||
if out is None:
|
||
raise HTTPException(404, "文件不存在")
|
||
return out
|
||
|
||
|
||
@router.get("/{file_id}/download", summary="下载文件")
|
||
def download_file(file_id: int, service: UploadService = Depends(_service)) -> FileResponse:
|
||
out = service.get_out(file_id)
|
||
if out is None:
|
||
raise HTTPException(404, "文件不存在")
|
||
path: Path | None = service.resolve_disk_path(file_id)
|
||
if path is None or not path.exists():
|
||
raise HTTPException(410, "文件实体已不在磁盘上")
|
||
return FileResponse(
|
||
path=str(path),
|
||
media_type=out.content_type or "application/octet-stream",
|
||
filename=out.original_filename,
|
||
)
|