How to check the authorization header using Warp? - rust

Question

I'm building a graphql api with Rust and Warp. I've looked through the docs, but I have still not figured out how to chain the filters, especially for checking the authorization in request header.
let context_extractor = warp::any()
// this code rejects all request which doesn't contain the authorization in header
// I'd like to make to check if authorization in header
.and(warp::header::<String>("authorization"))
.map(|token: String| -> Context {
let token_data = match verify_jwt(token) {
Ok(t) => t,
Err(_) => return Context { user_id: 0 },
};
Context {
user_id: token_data.claims.user_id,
}
});
let handle_request = move |context: Context,
request: juniper::http::GraphQLRequest|
-> Result<Vec<u8>, serde_json::Error> {
serde_json::to_vec(&request.execute(&schema, &context))
};
warp::post2()
.and(warp::path(path.into()))
.and(context_extractor)
.and(warp::body::json())
.map(handle_request)
.map(build_response)
.boxed()
This is my part of code. It works fine, but there is one problem. I've set up one route context_extractor with .and(warp::header::<String>("authorization"), then it rejects all requests which doesn't contain authorization in header.
How can I make
if request header has a authorization in header, then return Context with the proper user_id
if not, return Context with user_id: 0?

Answer 1

I've found the solution in github issues of Warp.
here is a small snippet.
let context_extractor = warp::any().and(
warp::header::<String>("authorization")
.map(|token: String| -> Context {
let token_data = match verify_jwt(token) {
Ok(t) => t,
Err(_) => return Context { user_id: 0 },
};
Context {
user_id: token_data.claims.user_id,
}
})
.or(warp::any().map(|| Context { user_id: 0 }))
.unify(),
);