From 602e5dc19076aeb4453fe9dbe631d54c346ca8d7 Mon Sep 17 00:00:00 2001
From: Remo Senekowitsch <remo@buenzli.dev>
Date: Wed, 16 Apr 2025 18:28:07 +0200
Subject: [PATCH] Use the /releases/latest redirect of the blog

---
 src/main.rs              | 31 +++++--------------------------
 src/rust_version.rs      | 31 -------------------------------
 templates/index.html.hbs |  2 +-
 3 files changed, 6 insertions(+), 58 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index b087a03d1..eaa8285ed 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -12,7 +12,6 @@ use cache::Cached;
 use rocket::catch;
 use rocket::get;
 use rocket::tokio::sync::RwLock;
-use rust_version::RustReleasePost;
 use rust_version::RustVersion;
 use serde::Serialize;
 use teams::RustTeams;
@@ -156,20 +155,13 @@ fn robots_txt() -> Option<content::RawText<&'static str>> {
 }
 
 #[get("/")]
-async fn index(
-    version_cache: &Cache<RustVersion>,
-    release_post_cache: &Cache<RustReleasePost>,
-) -> Template {
-    render_index(ENGLISH.into(), version_cache, release_post_cache).await
+async fn index(version_cache: &Cache<RustVersion>) -> Template {
+    render_index(ENGLISH.into(), version_cache).await
 }
 
 #[get("/<locale>", rank = 3)]
-async fn index_locale(
-    locale: SupportedLocale,
-    version_cache: &Cache<RustVersion>,
-    release_post_cache: &Cache<RustReleasePost>,
-) -> Template {
-    render_index(locale.0, version_cache, release_post_cache).await
+async fn index_locale(locale: SupportedLocale, version_cache: &Cache<RustVersion>) -> Template {
+    render_index(locale.0, version_cache).await
 }
 
 #[get("/<category>")]
@@ -328,26 +320,15 @@ fn concat_app_js(files: Vec<&str>) -> String {
     String::from(&js_path[1..])
 }
 
-async fn render_index(
-    lang: String,
-    version_cache: &Cache<RustVersion>,
-    release_post_cache: &Cache<RustReleasePost>,
-) -> Template {
+async fn render_index(lang: String, version_cache: &Cache<RustVersion>) -> Template {
     #[derive(Serialize)]
     struct IndexData {
         rust_version: String,
-        rust_release_post: String,
     }
 
     let page = "index";
-    let release_post = rust_version::rust_release_post(release_post_cache).await;
     let data = IndexData {
         rust_version: rust_version::rust_version(version_cache).await,
-        rust_release_post: if !release_post.is_empty() {
-            format!("https://blog.rust-lang.org/{}", release_post)
-        } else {
-            String::new()
-        },
     };
     let context = Context::new(page, "", true, data, lang);
     Template::render(page, context)
@@ -438,14 +419,12 @@ async fn rocket() -> _ {
     });
 
     let rust_version = RustVersion::fetch().await.unwrap_or_default();
-    let rust_release_post = RustReleasePost::fetch().await.unwrap_or_default();
     let teams = RustTeams::fetch().await.unwrap_or_default();
 
     rocket::build()
         .attach(templating)
         .attach(headers::InjectHeaders)
         .manage(Arc::new(RwLock::new(rust_version)))
-        .manage(Arc::new(RwLock::new(rust_release_post)))
         .manage(Arc::new(RwLock::new(teams)))
         .mount(
             "/",
diff --git a/src/rust_version.rs b/src/rust_version.rs
index b84f64686..e1ce547cf 100644
--- a/src/rust_version.rs
+++ b/src/rust_version.rs
@@ -5,11 +5,9 @@ use std::time::Instant;
 use crate::cache::{Cache, Cached};
 
 static MANIFEST_URL: &str = "https://static.rust-lang.org/dist/channel-rust-stable.toml";
-static RELEASES_FEED_URL: &str = "https://blog.rust-lang.org/releases.json";
 
 enum FetchTarget {
     Manifest,
-    ReleasesFeed,
 }
 
 async fn fetch(target: FetchTarget) -> Result<reqwest::Response, Box<dyn Error + Send + Sync>> {
@@ -27,7 +25,6 @@ async fn fetch(target: FetchTarget) -> Result<reqwest::Response, Box<dyn Error +
 
     let url = match target {
         FetchTarget::Manifest => MANIFEST_URL,
-        FetchTarget::ReleasesFeed => RELEASES_FEED_URL,
     };
 
     Ok(client.get(url).send().await?)
@@ -58,34 +55,6 @@ impl Cached for RustVersion {
     }
 }
 
-#[derive(Debug, Clone)]
-pub struct RustReleasePost(pub String, pub Instant);
-
-impl Default for RustReleasePost {
-    fn default() -> Self {
-        Self(Default::default(), Instant::now())
-    }
-}
-
-impl Cached for RustReleasePost {
-    fn get_timestamp(&self) -> Instant {
-        self.1
-    }
-    async fn fetch() -> Result<Self, Box<dyn Error + Send + Sync>> {
-        let releases = fetch(FetchTarget::ReleasesFeed)
-            .await?
-            .text()
-            .await?
-            .parse::<serde_json::Value>()?;
-        let url = releases["releases"][0]["url"].as_str().unwrap().to_string();
-        Ok(RustReleasePost(url, Instant::now()))
-    }
-}
-
 pub async fn rust_version(version_cache: &Cache<RustVersion>) -> String {
     RustVersion::get(version_cache).await.0
 }
-
-pub async fn rust_release_post(release_post_cache: &Cache<RustReleasePost>) -> String {
-    RustReleasePost::get(release_post_cache).await.0
-}
diff --git a/templates/index.html.hbs b/templates/index.html.hbs
index b47f4efa7..d2978d238 100644
--- a/templates/index.html.hbs
+++ b/templates/index.html.hbs
@@ -12,7 +12,7 @@
         {{fluent "get-started"}}
       </a>
       <p class="tc f3 f2-l mt3">
-        <a href="{{data.rust_release_post}}" class="download-link">{{#fluent "homepage-version"}}{{#fluentparam "number"}}{{data.rust_version}}{{/fluentparam}}{{/fluent}}</a>
+        <a href="https://blog.rust-lang.org/releases/latest" class="download-link">{{#fluent "homepage-version"}}{{#fluentparam "number"}}{{data.rust_version}}{{/fluentparam}}{{/fluent}}</a>
       </p>
     </div>
   </div>