dynamic-config-axum

A request-scoped dynamic-config snapshot for axum: one tower layer, one extractor.

[dependencies]
dynamic-config-axum = "0.1.0"

use dynamic_config_axum::{Config, SnapshotLayer};
use dynamic_config_web_core::sections;

async fn index(
    Config(server): Config<Server>,
    Config(features): Config<Features>,
) -> String {
    format!("{} {}", server.port, features.cache)
}

let app = Router::new()
    .route("/", get(index))
    .layer(SnapshotLayer::new(sections![Server, Features]));

Both sections come from one reading taken when the request began, so a reload landing mid-request cannot show one response two generations.

The layer owns no lifecycle: loading, watching and the WatchHandle stay in your main, unchanged.

See the workspace README for the problem this solves, and cargo run -p dynamic-config-axum --example axum_two_sections for a runnable demonstration.

MIT licensed.