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from fastapi.encoders import jsonable_encoder
from fastapi.exceptions import RequestValidationError, WebSocketRequestValidationError
from fastapi.utils import is_body_allowed_for_status_code
from fastapi.websockets import WebSocket
from starlette.exceptions import HTTPException
from starlette.requests import Request
from starlette.responses import JSONResponse, Response
from starlette.status import HTTP_422_UNPROCESSABLE_ENTITY, WS_1008_POLICY_VIOLATION
async def http_exception_handler(request: Request, exc: HTTPException) -> Response:
headers = getattr(exc, "headers", None)
if not is_body_allowed_for_status_code(exc.status_code):
return Response(status_code=exc.status_code, headers=headers)
return JSONResponse(
{"detail": exc.detail}, status_code=exc.status_code, headers=headers
)
async def request_validation_exception_handler(
request: Request, exc: RequestValidationError
) -> JSONResponse:
return JSONResponse(
status_code=HTTP_422_UNPROCESSABLE_ENTITY,
content={"detail": jsonable_encoder(exc.errors())},
)
async def websocket_request_validation_exception_handler(
websocket: WebSocket, exc: WebSocketRequestValidationError
) -> None:
await websocket.close(
code=WS_1008_POLICY_VIOLATION, reason=jsonable_encoder(exc.errors())
)
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