42521bab63
- filesystem_service 简化文件元数据处理 - viewer_filesystem_service 移除冗余逻辑 - 新增 upload_utils 上传工具模块 - filesystem_router 移除废弃端点 - 前端 viewer_filesystem.js 接口重构，新增 upload_limits.js 上传限制 - file_preview、file_utils 更新预览与工具函数
87 lines
2.2 KiB
Python
87 lines
2.2 KiB
Python
import uuid
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from pathlib import Path
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import aiofiles
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from fastapi import UploadFile
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from yuxi.storage.minio import aupload_file_to_minio
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async def write_upload_to_buffer(
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upload: UploadFile,
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buffer,
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*,
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max_size_bytes: int,
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too_large_message: str,
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chunk_size: int = 1024 * 1024,
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) -> int:
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await upload.seek(0)
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written = 0
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while chunk := await upload.read(chunk_size):
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written += len(chunk)
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if written > max_size_bytes:
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raise ValueError(too_large_message)
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await buffer.write(chunk)
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return written
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async def read_upload_with_limit(
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upload: UploadFile,
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*,
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max_size_bytes: int,
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too_large_message: str,
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chunk_size: int = 1024 * 1024,
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) -> bytes:
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await upload.seek(0)
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written = 0
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chunks: list[bytes] = []
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while chunk := await upload.read(chunk_size):
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written += len(chunk)
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if written > max_size_bytes:
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raise ValueError(too_large_message)
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chunks.append(chunk)
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return b"".join(chunks)
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async def write_upload_to_path(
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upload: UploadFile,
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dest: Path,
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*,
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max_size_bytes: int,
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too_large_message: str,
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mode: str = "wb",
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chunk_size: int = 1024 * 1024,
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) -> int:
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async with aiofiles.open(dest, mode) as buffer:
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return await write_upload_to_buffer(
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upload,
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buffer,
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max_size_bytes=max_size_bytes,
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too_large_message=too_large_message,
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chunk_size=chunk_size,
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)
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async def upload_image_to_minio(
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upload: UploadFile,
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*,
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object_prefix: str,
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max_size_bytes: int,
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too_large_message: str,
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) -> str:
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if not upload.content_type or not upload.content_type.startswith("image/"):
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raise ValueError("只能上传图片文件")
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file_content = await read_upload_with_limit(
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upload,
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max_size_bytes=max_size_bytes,
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too_large_message=too_large_message,
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)
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file_extension = upload.filename.rsplit(".", 1)[-1].lower() if upload.filename and "." in upload.filename else "jpg"
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object_name = f"{object_prefix.strip('/')}/{uuid.uuid4()}.{file_extension}"
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return await aupload_file_to_minio("public", object_name, file_content)
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