[Python] Catch HTTPException raised in route

Need to catch HTTPException raised in route in middleware.

Raise exception in route:

@worker.get("/v1/error_400")
async def error_400():
raise HTTPException(
status_code=400,
detail=["400", "error", "message"]
)


Then try to catch in middleware:

async def http_global_exception_middleware(request: Request, call_next: Callable) -> Response:
try:
response = await call_next(request)
return response
except HTTPException as e:
raise e
except Exception as e:
logger.critical(e)
raise HTTPException(
status_code=500,
detail=str(e)
)


In this case try block never catches HTTPException, but if I raised other exception, it caught in last block (except Exception).

Why can't I catch HTTPException?

Add middleware in app.py:

app = FastAPI()

app.include_router(v1.default.worker)
app.middleware("http")(http_global_exception_middleware)

Continue reading...