feat: 存在しないエンドポイントにアクセスされた場合のハンドラを追加

server/entrypoint/Cargo.toml

@@ -19,6 +19,7 @@ tower = "0.4.13"
 tower-http = { version = "0.5.0", features = ["cors"] }
 tracing = { workspace = true }
 tracing-subscriber = { version = "0.3.18", features = ["std", "registry", "env-filter"] }
+serde_json = { workspace = true }
 
 [package.metadata.cargo-udeps.ignore]
 development = ["cargo-husky"]

server/entrypoint/src/main.rs

@@ -1,13 +1,15 @@
 use std::net::SocketAddr;
 
+use axum::http::StatusCode;
+use axum::response::IntoResponse;
 use axum::{
     http::{
         header::{AUTHORIZATION, CONTENT_TYPE, LOCATION},
         Method,
     },
     middleware,
     routing::{get, patch, post},
-    Router,
+    Json, Router,
 };
 use common::config::{ENV, HTTP};
 use presentation::{
@@ -22,6 +24,7 @@ use presentation::{
 };
 use resource::{database::connection::ConnectionPool, repository::Repository};
 use sentry::integrations::tower::{NewSentryLayer, SentryHttpLayer};
+use serde_json::json;
 use tokio::net::TcpListener;
 use tower_http::cors::{Any, CorsLayer};
 use tracing::log;
@@ -88,6 +91,7 @@ async fn main() -> anyhow::Result<()> {
         .route("/users/:uuid", patch(patch_user_role))
         .with_state(shared_repository.to_owned())
         .route("/health", get(health_check))
+        .fallback(not_found_handler)
         .layer(layer)
         .route_layer(middleware::from_fn_with_state(
             shared_repository.to_owned(),
@@ -111,6 +115,14 @@ async fn main() -> anyhow::Result<()> {
     Ok(())
 }
 
+async fn not_found_handler() -> impl IntoResponse {
+    (
+        StatusCode::NOT_FOUND,
+        Json(json!({ "reason": "ACCESS TO UNKNOWN ENDPOINT." })),
+    )
+        .into_response()
+}
+
 // NOTE: hyper::Serverが削除され、2023/12/03時点でgraceful_shutdownが実装できない
 // ref: https://github.com/hyperium/hyper/issues/2862
 // async fn graceful_handler() {