servers/http/hints.rs
1// Copyright 2023 Greptime Team
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use axum::body::Body;
16use axum::http::Request;
17use axum::middleware::Next;
18use axum::response::Response;
19use session::context::QueryContext;
20
21use crate::hint_headers;
22
23pub async fn extract_hints(mut request: Request<Body>, next: Next) -> Response {
24 let hints = hint_headers::extract_hints(request.headers());
25 if let Some(query_ctx) = request.extensions_mut().get_mut::<QueryContext>() {
26 for (key, value) in hints {
27 query_ctx.set_extension(key, value);
28 }
29 }
30 next.run(request).await
31}