How to require request headers or fail (migration from FastAPI)

[danielniccoli]

I'm trying to migrate from FastAPI to LiteStar and have not found a way to migrate the request header requirements x_ms_client_principal_id: Annotated[str, Header()], and x_ms_client_principal_name: Annotated[str, Header()] from the following FastAPI route handler:

@app.post("/test")
async def post_test(
    data: MyPydanticModel,
    x_ms_client_principal_id: Annotated[str, Header()],
    x_ms_client_principal_name: Annotated[str, Header()],
    request: Request,
):
    ...

What the above code does is to check if the request header contains the two parameters x_ms_client_principal_id and x_ms_client_principal_name, and fails with an error message if not.

How do I do that in LiteStar?

[Alc-Alc]

Does this do what you want?

from litestar.params import Parameter

x_ms_client_principal_id: Annotated[str, Parameter(header="x_ms_client_principal_id")]
x_ms_client_principal_name: Annotated[str, Parameter(header="x_ms_client_principal_name")]

[danielniccoli]

Yes, this does what I want!