v0.25.4

src/admin/status.rs

@@ -342,6 +342,13 @@ struct ConfigHistoryQuery {
     limit: Option<usize>,
 }
 
+#[derive(Deserialize)]
+#[serde(deny_unknown_fields)]
+struct ConfigHistoryRestore {
+    revision: u64,
+    expected_revision: u64,
+}
+
 async fn config_history(
     State(state): State<Arc<App>>,
     Query(query): Query<ConfigHistoryQuery>,
@@ -363,6 +370,42 @@ async fn config_history(
         .map_err(auth::internal)?;
     Ok(Json(json!({"revisions": revisions})))
 }
+async fn restore_config_history(
+    State(state): State<Arc<App>>,
+    Extension(session): Extension<Session>,
+    Json(input): Json<ConfigHistoryRestore>,
+) -> Result<Json<crate::config::Envelope>, ApiError> {
+    let current_revision = state.config.load().envelope.revision;
+    if current_revision != input.expected_revision {
+        return Err(ApiError(
+            StatusCode::CONFLICT,
+            "configuration changed; reload before restoring".into(),
+        ));
+    }
+    if input.revision >= current_revision {
+        return Err(ApiError(
+            StatusCode::BAD_REQUEST,
+            "only an older configuration revision can be restored".into(),
+        ));
+    }
+    let detail = state
+        .store
+        .configuration_revision(input.revision)
+        .await
+        .map_err(auth::internal)?
+        .ok_or_else(|| ApiError(StatusCode::NOT_FOUND, "configuration revision not found".into()))?;
+    state
+        .restore_as(
+            Update {
+                expected_revision: input.expected_revision,
+                config: detail.config,
+            },
+            session.username,
+            input.revision,
+        )
+        .await
+        .map(Json)
+}
 async fn update(
     State(state): State<Arc<App>>,
     Extension(session): Extension<Session>,