Module header_from_str_config

Extract a header config from a request or response and insert it into the Extensions of its Context.

Example

use rama_http::layer::header_from_str_config::HeaderFromStrConfigLayer;
use rama_http::service::web::{WebService};
use rama_http::{Body, Request, StatusCode, HeaderName};
use rama_core::{Context, Service, Layer};
use serde::Deserialize;

#[tokio::main]
async fn main() {
    let service = HeaderFromStrConfigLayer::<String>::required(HeaderName::from_static("x-proxy-labels"))
        .with_repeat(true)
        .layer(WebService::default()
            .get("/", |ctx: Context<()>| async move {
                // For production-like code you should prefer a custom type
                // to avoid possible conflicts. Ideally these are also as
                // cheap as possible to allocate.
                let labels: &Vec<String> = ctx.get().unwrap();
                assert_eq!("a+b+c", labels.join("+"));
            }),
        );

    let request = Request::builder()
        .header("x-proxy-labels", "a, b")
        .header("x-proxy-labels", "c")
        .body(Body::empty())
        .unwrap();

    let resp = service.serve(Context::default(), request).await.unwrap();
    assert_eq!(resp.status(), StatusCode::OK);
}

Structs

• HeaderFromStrConfigLayer
  Layer which extracts a header CSv config for the given HeaderName from a request or response and inserts it into the Extensions of that object.
• HeaderFromStrConfigService
  A Service which extracts a header CSV config from a request or response and inserts it into the Extensions of that object.