Add global exception handlers to FastAPI app

import logging
 
from fastapi import Request, status
from fastapi.encoders import jsonable_encoder
from fastapi.exceptions import HTTPException, RequestValidationError
from fastapi.responses import JSONResponse
 
 
async def validation_exception_handler(request: Request, exc: RequestValidationError):
    return JSONResponse(
        status_code=status.HTTP_422_UNPROCESSABLE_ENTITY,
        content=jsonable_encoder({"detail": exc.errors(), "body": exc.body}),
    )
 
 
async def generic_exception_handler(request: Request, exc: Exception):
    return JSONResponse(
        status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
        content={"message": "Generic exception raised"},
    )
 
exception_handlers = {
    Exception: generic_exception_handler,
    RequestValidationError: validation_exception_handler,
}