v0.25.4

src/runtime/updates.rs

@@ -20,6 +20,22 @@ impl App {
         self: &Arc<Self>,
         update: Update,
         actor: String,
+    ) -> Result<config::Envelope, ApiError> {
+        self.update_as_action(update, actor, None).await
+    }
+    pub async fn restore_as(
+        self: &Arc<Self>,
+        update: Update,
+        actor: String,
+        source_revision: u64,
+    ) -> Result<config::Envelope, ApiError> {
+        self.update_as_action(update, actor, Some(source_revision)).await
+    }
+    async fn update_as_action(
+        self: &Arc<Self>,
+        update: Update,
+        actor: String,
+        source_revision: Option<u64>,
     ) -> Result<config::Envelope, ApiError> {
         let slot = self.update_slots.clone().try_acquire_owned().map_err(|_| {
             ApiError(
@@ -80,11 +96,24 @@ impl App {
                     "configuration changed; reload before saving".into(),
                 ));
             }
-            match this
-                .store
-                .replace_as(expected_revision, &prepared.envelope.config, &actor)
-                .await
-            {
+            let persisted = match source_revision {
+                Some(source) => {
+                    this.store
+                        .replace_as_restore(
+                            expected_revision,
+                            &prepared.envelope.config,
+                            &actor,
+                            source,
+                        )
+                        .await
+                }
+                None => {
+                    this.store
+                        .replace_as(expected_revision, &prepared.envelope.config, &actor)
+                        .await
+                }
+            };
+            match persisted {
                 Ok(true) => {}
                 Ok(false) => {
                     return Err(ApiError(