Dependencies on API Routers not being called for routes via add_route

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Example Code

from fastapi import APIRouter, Depends, HTTPException
from strawberry.asgi import GraphQL
from . import graphql_schema

def some_func():
	print("CALLED")
	raise HTTPException(status_code=400, detail="X-Token header invalid")

print("HERE")

router = APIRouter(dependencies=[Depends(some_func)])
 
graphql = GraphQL(graphql_schema)
router.add_route("/", graphql)

Description

Accessing a route added with add_route does not invoke the dependencies - it never actually executes some_func (I never see the CALLED print statement in logs)

Operating System

macOS

Operating System Details

No response

FastAPI Version

0.65.2

Python Version

3.9.5

Additional Context

No response

[ghandic]

This works for me, a little hacky but you need to create a wrapper that takes the request and pulls it back to scope, receive and send.

async def wrapper(req: Request) -> JSONResponse:
    return await graphql(req.scope, req.receive, req._send)

Full example:

from fastapi import FastAPI, HTTPException, APIRouter, Depends, Request
from fastapi.responses import JSONResponse
from strawberry.asgi import GraphQL
import strawberry


@strawberry.type
class Query:
    @strawberry.field
    def hello(self) -> str:
        return "Hello World"


schema = strawberry.Schema(query=Query)
graphql = GraphQL(schema)


def some_func():
    print("CALLED")
    raise HTTPException(status_code=400, detail="X-Token header invalid")


async def wrapper(req: Request) -> JSONResponse:
    return await graphql(req.scope, req.receive, req._send)


app = FastAPI()
router = APIRouter(dependencies=[Depends(some_func)])
router.add_api_route(
    "/demo", wrapper, dependencies=router.dependencies, include_in_schema=False, methods=["GET", "POST"]
)

router.add_websocket_route("/demo", graphql)
app.include_router(router)

[ghandic]

@navyamehta

You can use add_api_route rather than add_route I don’t know if that will cause other issues for you though. When I used add_route I don’t get any docs for the route but using add_api_route I get docs and the deps are managed

add_route is just inherited from starlette so wont get the fastapi magic sprinkled in (eg docs and dependencies)

Full minimal example:

from fastapi import FastAPI, HTTPException, APIRouter, Depends


def some_func():
    print("CALLED")
    raise HTTPException(status_code=400, detail="X-Token header invalid")


async def demo(demo: str):
    return {}


app = FastAPI()
router = APIRouter(dependencies=[Depends(some_func)])
router.add_api_route("/demo", demo)
app.include_router(router)