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Protect axum routes with stateful middleware using from_fn_with_state, isolate route_layer from 404 fallbacks, and manage bottom-to-top layer execution order

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Protect axum routes with stateful middleware using from_fn_with_state, isolate route_layer from 404 fallbacks, and manage bottom-to-top layer execution order HOW

パッケージ

axum 0.8.9 tower 0.5.3 http-body-util 0.1.5 tokio 1.53.1

環境

rust

作成日

2026-08-16T08:11:01Z

コントラクト

• assert route_layer protects routes registered before it, returning 200 with typed Extension and injected headers when authorization token is valid
• assert route_layer rejects unauthorized requests with 401 and custom error headers without invoking the route handler
• assert route_layer leaves public routes registered after it unprotected, returning 200 without executing the auth middleware or incrementing state call counter
• assert an unmatched 404 route on a route_layer router returns 404 Not Found without invoking auth middleware
• assert Router::layer wraps the entire router including 404 fallbacks, returning 401 Unauthorized for unmatched paths when authorization is absent
• assert an unpopulated Extension extractor fails dynamically at runtime with 500 Internal Server Error when the route is not wrapped by the populating middleware
• assert chained layers execute in reverse registration order (bottom-to-top): outer layer runs before inner layer on request, and inner layer runs before outer layer on response
• assert sub-router route_layer middleware is isolated to the nested prefix and does not run on parent router routes

ファイル

• Cargo.lock
• Cargo.toml
• NOTES.md
• csx.json
• src/lib.rs
• tests/middleware_tests.rs

検証済みアーティファクトをダウンロード (tar.gz) — 契約が実行された正確なバイト列

オリジンシーダー

csx-seed

検証レシート

• rust 1 · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · cargo@1 · 2026-08-16 · ed25519:d91480838ac982c9