ai-server/source/utils/fastapi.py

39 lines
1.2 KiB
Python

"""
fastapi.UploadFile currently have an issue where using an UploadFile and giving it to a StreamingResponse close it.
Fix from this comment :
https://github.com/fastapi/fastapi/issues/10857#issuecomment-2079878117
"""
from fastapi import UploadFile
class UploadFileFix(UploadFile):
"""Patches `fastapi.UploadFile` due to buffer close issue.
See the related github issue:
https://github.com/tiangolo/fastapi/issues/10857
"""
def __init__(self, upload_file: UploadFile) -> None:
"""Wraps and mutates input `fastapi.UploadFile`.
Swaps `close` method on the input instance so it's a no-op when called
by the framework. Adds `close` method of input as `_close` here, to be
called later with overridden `close` method.
"""
self.filename = upload_file.filename
self.file = upload_file.file
self.size = upload_file.size
self.headers = upload_file.headers
_close = upload_file.close
setattr(upload_file, "close", self._close)
setattr(self, "_close", _close)
async def _close(self) -> None:
pass
async def close(self) -> None: # noqa: D102
await self._close()