Expose the default_version on the API

src/controllers/krate/metadata.rs

@@ -45,12 +45,19 @@ pub async fn show(app: AppState, Path(name): Path<String>, req: Parts) -> AppRes
             .transpose()?
             .unwrap_or_default();
 
-        let (krate, downloads): (Crate, i64) = Crate::by_name(&name)
-            .inner_join(crate_downloads::table)
-            .select((Crate::as_select(), crate_downloads::downloads))
-            .first(conn)
-            .optional()?
-            .ok_or_else(|| crate_not_found(&name))?;
+        let (krate, downloads, default_version): (Crate, i64, Option<String>) =
+            Crate::by_name(&name)
+                .inner_join(crate_downloads::table)
+                .left_join(default_versions::table)
+                .left_join(versions::table.on(default_versions::version_id.eq(versions::id)))
+                .select((
+                    Crate::as_select(),
+                    crate_downloads::downloads,
+                    versions::num.nullable(),
+                ))
+                .first(conn)
+                .optional()?
+                .ok_or_else(|| crate_not_found(&name))?;
 
         let versions_publishers_and_audit_actions = if include.versions {
             let mut versions_and_publishers: Vec<(Version, Option<User>)> = krate
@@ -120,6 +127,7 @@ pub async fn show(app: AppState, Path(name): Path<String>, req: Parts) -> AppRes
 
         let encodable_crate = EncodableCrate::from(
             krate.clone(),
+            default_version.as_deref(),
             top_versions.as_ref(),
             ids,
             kws.as_deref(),

src/controllers/krate/publish.rs

@@ -392,6 +392,7 @@ pub async fn publish(app: AppState, req: BytesRequest) -> AppResult<Json<GoodCra
                 .first(conn)
                 .optional()?;
 
+            let mut default_version = None;
             // Upsert the `default_value` determined by the existing `default_value` and the
             // published version. Note that this could potentially write an outdated version
             // (although this should not happen regularly), as we might be comparing to an
@@ -412,6 +413,8 @@ pub async fn publish(app: AppState, req: BytesRequest) -> AppResult<Json<GoodCra
                         .filter(default_versions::crate_id.eq(krate.id))
                         .set(default_versions::version_id.eq(version.id))
                         .execute(conn)?;
+                } else {
+                    default_version = Some(existing_default_version.num.to_string());
                 }
 
                 // Update the default version asynchronously in a background job
@@ -505,7 +508,15 @@ pub async fn publish(app: AppState, req: BytesRequest) -> AppResult<Json<GoodCra
             };
 
             Ok(Json(GoodCrate {
-                krate: EncodableCrate::from_minimal(krate, Some(&top_versions), None, false, downloads, None),
+                krate: EncodableCrate::from_minimal(
+                    krate,
+                    default_version.or(Some(version_string)).as_deref(),
+                    Some(&top_versions),
+                    None,
+                    false,
+                    downloads,
+                    None,
+                ),
                 warnings,
             }))
         })

src/controllers/krate/search.rs

@@ -87,13 +87,16 @@ pub async fn search(app: AppState, req: Parts) -> AppResult<Json<Value>> {
             crate_downloads::downloads,
             recent_crate_downloads::downloads.nullable(),
             0_f32.into_sql::<Float>(),
+            versions::num.nullable(),
         );
 
         let mut seek: Option<Seek> = None;
         let mut query = filter_params
             .make_query(&req, conn)?
             .inner_join(crate_downloads::table)
             .left_join(recent_crate_downloads::table)
+            .left_join(default_versions::table)
+            .left_join(versions::table.on(default_versions::version_id.eq(versions::id)))
             .select(selection);
 
         if let Some(q_string) = &filter_params.q_string {
@@ -113,6 +116,7 @@ pub async fn search(app: AppState, req: Parts) -> AppResult<Json<Value>> {
                         crate_downloads::downloads,
                         recent_crate_downloads::downloads.nullable(),
                         rank.clone(),
+                        versions::num.nullable(),
                     ));
                     seek = Some(Seek::Relevance);
                     query = query.then_order_by(rank.desc())
@@ -123,6 +127,7 @@ pub async fn search(app: AppState, req: Parts) -> AppResult<Json<Value>> {
                         crate_downloads::downloads,
                         recent_crate_downloads::downloads.nullable(),
                         0_f32.into_sql::<Float>(),
+                        versions::num.nullable(),
                     ));
                     seek = Some(Seek::Query);
                 }
@@ -225,16 +230,19 @@ pub async fn search(app: AppState, req: Parts) -> AppResult<Json<Value>> {
 
         let crates = versions
             .zip(data)
-            .map(|(max_version, (krate, perfect_match, total, recent, _))| {
-                EncodableCrate::from_minimal(
-                    krate,
-                    Some(&max_version),
-                    Some(vec![]),
-                    perfect_match,
-                    total,
-                    Some(recent.unwrap_or(0)),
-                )
-            })
+            .map(
+                |(max_version, (krate, perfect_match, total, recent, _, default_version))| {
+                    EncodableCrate::from_minimal(
+                        krate,
+                        default_version.as_deref(),
+                        Some(&max_version),
+                        Some(vec![]),
+                        perfect_match,
+                        total,
+                        Some(recent.unwrap_or(0)),
+                    )
+                },
+            )
             .collect::<Vec<_>>();
 
         Ok(Json(json!({
@@ -614,6 +622,7 @@ mod seek {
                 downloads,
                 recent_downloads,
                 rank,
+                _,
             ) = *record;
 
             match *self {
@@ -636,11 +645,18 @@ mod seek {
     }
 }
 
-type Record = (Crate, bool, i64, Option<i64>, f32);
+type Record = (Crate, bool, i64, Option<i64>, f32, Option<String>);
 
 type QuerySource = LeftJoinQuerySource<
-    InnerJoinQuerySource<crates::table, crate_downloads::table>,
-    recent_crate_downloads::table,
+    LeftJoinQuerySource<
+        LeftJoinQuerySource<
+            InnerJoinQuerySource<crates::table, crate_downloads::table>,
+            recent_crate_downloads::table,
+        >,
+        default_versions::table,
+    >,
+    versions::table,
+    diesel::dsl::Eq<default_versions::version_id, versions::id>,
 >;
 
 type BoxedCondition<'a> = Box<

src/controllers/summary.rs

@@ -1,6 +1,8 @@
 use crate::app::AppState;
 use crate::models::{Category, Crate, CrateVersions, Keyword, TopVersions, Version};
-use crate::schema::{crate_downloads, crates, keywords, metadata, recent_crate_downloads};
+use crate::schema::{
+    crate_downloads, crates, default_versions, keywords, metadata, recent_crate_downloads, versions,
+};
 use crate::tasks::spawn_blocking;
 use crate::util::diesel::Conn;
 use crate::util::errors::AppResult;
@@ -25,7 +27,7 @@ pub async fn summary(state: AppState) -> AppResult<Json<Value>> {
 
         fn encode_crates(
             conn: &mut impl Conn,
-            data: Vec<(Crate, i64, Option<i64>)>,
+            data: Vec<(Crate, i64, Option<i64>, Option<String>)>,
         ) -> AppResult<Vec<EncodableCrate>> {
             let krates = data.iter().map(|(c, ..)| c).collect::<Vec<_>>();
             let versions: Vec<Version> = krates.versions().load(conn)?;
@@ -34,9 +36,10 @@ pub async fn summary(state: AppState) -> AppResult<Json<Value>> {
                 .into_iter()
                 .map(TopVersions::from_versions)
                 .zip(data)
-                .map(|(top_versions, (krate, total, recent))| {
+                .map(|(top_versions, (krate, total, recent, default_version))| {
                     Ok(EncodableCrate::from_minimal(
                         krate,
+                        default_version.as_deref(),
                         Some(&top_versions),
                         None,
                         false,
@@ -51,18 +54,23 @@ pub async fn summary(state: AppState) -> AppResult<Json<Value>> {
             Crate::as_select(),
             crate_downloads::downloads,
             recent_crate_downloads::downloads.nullable(),
+            versions::num.nullable(),
         );
 
         let new_crates = crates::table
             .inner_join(crate_downloads::table)
             .left_join(recent_crate_downloads::table)
+            .left_join(default_versions::table)
+            .left_join(versions::table.on(default_versions::version_id.eq(versions::id)))
             .order(crates::created_at.desc())
             .select(selection)
             .limit(10)
             .load(conn)?;
         let just_updated = crates::table
             .inner_join(crate_downloads::table)
             .left_join(recent_crate_downloads::table)
+            .left_join(default_versions::table)
+            .left_join(versions::table.on(default_versions::version_id.eq(versions::id)))
             .filter(crates::updated_at.ne(crates::created_at))
             .order(crates::updated_at.desc())
             .select(selection)
@@ -72,6 +80,8 @@ pub async fn summary(state: AppState) -> AppResult<Json<Value>> {
         let mut most_downloaded_query = crates::table
             .inner_join(crate_downloads::table)
             .left_join(recent_crate_downloads::table)
+            .left_join(default_versions::table)
+            .left_join(versions::table.on(default_versions::version_id.eq(versions::id)))
             .into_boxed();
         if !config.excluded_crate_names.is_empty() {
             most_downloaded_query =
@@ -86,6 +96,8 @@ pub async fn summary(state: AppState) -> AppResult<Json<Value>> {
         let mut most_recently_downloaded_query = crates::table
             .inner_join(crate_downloads::table)
             .inner_join(recent_crate_downloads::table)
+            .left_join(default_versions::table)
+            .left_join(versions::table.on(default_versions::version_id.eq(versions::id)))
             .into_boxed();
         if !config.excluded_crate_names.is_empty() {
             most_recently_downloaded_query = most_recently_downloaded_query

src/tests/krate/publish/basics.rs

@@ -112,6 +112,37 @@ async fn new_krate_twice() {
     "###);
 }
 
+// This is similar to the `new_krate_twice` case, but the versions are published in reverse order.
+// The primary purpose is to verify that the `default_version` we provide is as expected.
+#[tokio::test(flavor = "multi_thread")]
+async fn new_krate_twice_alt() {
+    let (app, _, _, token) = TestApp::full().with_token();
+
+    let crate_to_publish =
+        PublishBuilder::new("foo_twice", "2.0.0").description("2.0.0 description");
+    token.publish_crate(crate_to_publish).await.good();
+
+    let crate_to_publish = PublishBuilder::new("foo_twice", "0.99.0");
+    let response = token.publish_crate(crate_to_publish).await;
+    assert_eq!(response.status(), StatusCode::OK);
+    assert_json_snapshot!(response.json(), {
+        ".crate.created_at" => "[datetime]",
+        ".crate.updated_at" => "[datetime]",
+    });
+
+    let crates = app.crates_from_index_head("foo_twice");
+    assert_json_snapshot!(crates);
+
+    assert_snapshot!(app.stored_files().await.join("\n"), @r###"
+    crates/foo_twice/foo_twice-0.99.0.crate
+    crates/foo_twice/foo_twice-2.0.0.crate
+    index/fo/o_/foo_twice
+    rss/crates.xml
+    rss/crates/foo_twice.xml
+    rss/updates.xml
+    "###);
+}
+
 #[tokio::test(flavor = "multi_thread")]
 async fn new_krate_duplicate_version() {
     let (app, _, user, token) = TestApp::full().with_token();

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__basics__new_krate.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "1.0.0",
     "description": "description",
     "documentation": null,
     "downloads": 0,

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__basics__new_krate_twice.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "2.0.0",
     "description": "2.0.0 description",
     "documentation": null,
     "downloads": 0,

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__basics__new_krate_twice_alt-2.snap

@@ -0,0 +1,22 @@
+---
+source: src/tests/krate/publish/basics.rs
+expression: crates
+---
+[
+  {
+    "name": "foo_twice",
+    "vers": "2.0.0",
+    "deps": [],
+    "cksum": "d6e88a7d30b9e5c3d268ede9a9937b62815e45a06fd2c572d602e0705ab6513d",
+    "features": {},
+    "yanked": false
+  },
+  {
+    "name": "foo_twice",
+    "vers": "0.99.0",
+    "deps": [],
+    "cksum": "45b0b19cd0280034e07820789d9bb6e4016526eba85c75fc697d49ec99fd2550",
+    "features": {},
+    "yanked": false
+  }
+]

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__basics__new_krate_twice_alt.snap

@@ -0,0 +1,40 @@
+---
+source: src/tests/krate/publish/basics.rs
+expression: response.json()
+---
+{
+  "crate": {
+    "badges": null,
+    "categories": null,
+    "created_at": "[datetime]",
+    "default_version": "2.0.0",
+    "description": "description",
+    "documentation": null,
+    "downloads": 0,
+    "exact_match": false,
+    "homepage": null,
+    "id": "foo_twice",
+    "keywords": null,
+    "links": {
+      "owner_team": "/api/v1/crates/foo_twice/owner_team",
+      "owner_user": "/api/v1/crates/foo_twice/owner_user",
+      "owners": "/api/v1/crates/foo_twice/owners",
+      "reverse_dependencies": "/api/v1/crates/foo_twice/reverse_dependencies",
+      "version_downloads": "/api/v1/crates/foo_twice/downloads",
+      "versions": "/api/v1/crates/foo_twice/versions"
+    },
+    "max_stable_version": "2.0.0",
+    "max_version": "2.0.0",
+    "name": "foo_twice",
+    "newest_version": "0.99.0",
+    "recent_downloads": null,
+    "repository": null,
+    "updated_at": "[datetime]",
+    "versions": null
+  },
+  "warnings": {
+    "invalid_badges": [],
+    "invalid_categories": [],
+    "other": []
+  }
+}

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__basics__new_krate_weird_version.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "0.0.0-pre",
     "description": "description",
     "documentation": null,
     "downloads": 0,

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__basics__new_krate_with_token.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "1.0.0",
     "description": "description",
     "documentation": null,
     "downloads": 0,

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__build_metadata__version_with_build_metadata@build_metadata_1.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "1.0.0+foo",
     "description": "description",
     "documentation": null,
     "downloads": 0,

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__build_metadata__version_with_build_metadata@build_metadata_2.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "1.0.0-beta.1",
     "description": "description",
     "documentation": null,
     "downloads": 0,

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__build_metadata__version_with_build_metadata@build_metadata_3.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "1.0.0+foo",
     "description": "description",
     "documentation": null,
     "downloads": 0,

src/tests/krate/publish/snapshots/crates_io__tests__krate__publish__categories__good_categories.snap

@@ -7,6 +7,7 @@ expression: response.json()
     "badges": null,
     "categories": null,
     "created_at": "[datetime]",
+    "default_version": "1.0.0",
     "description": "description",
     "documentation": null,
     "downloads": 0,