44 lines
986 B
Python
44 lines
986 B
Python
from pathlib import Path
|
|
|
|
import aiofiles
|
|
from fastapi import UploadFile
|
|
|
|
|
|
async def write_upload_to_buffer(
|
|
upload: UploadFile,
|
|
buffer,
|
|
*,
|
|
max_size_bytes: int,
|
|
too_large_message: str,
|
|
chunk_size: int = 1024 * 1024,
|
|
) -> int:
|
|
await upload.seek(0)
|
|
written = 0
|
|
|
|
while chunk := await upload.read(chunk_size):
|
|
written += len(chunk)
|
|
if written > max_size_bytes:
|
|
raise ValueError(too_large_message)
|
|
await buffer.write(chunk)
|
|
|
|
return written
|
|
|
|
|
|
async def write_upload_to_path(
|
|
upload: UploadFile,
|
|
dest: Path,
|
|
*,
|
|
max_size_bytes: int,
|
|
too_large_message: str,
|
|
mode: str = "wb",
|
|
chunk_size: int = 1024 * 1024,
|
|
) -> int:
|
|
async with aiofiles.open(dest, mode) as buffer:
|
|
return await write_upload_to_buffer(
|
|
upload,
|
|
buffer,
|
|
max_size_bytes=max_size_bytes,
|
|
too_large_message=too_large_message,
|
|
chunk_size=chunk_size,
|
|
)
|