feat: enable changed events

crates/nocontrol/src/control_plane/backing_store.rs

@@ -6,7 +6,8 @@ use tokio::sync::RwLock;
 
 use crate::{
     manifests::{
-        Manifest, ManifestLease, ManifestState, ManifestStatus, ManifestStatusState, WorkerId,
+        Manifest, ManifestChangeEvent, ManifestChangeEventType, ManifestLease, ManifestState,
+        ManifestStatus, ManifestStatusState, WorkerId,
     },
     Specification,
 };
@@ -119,6 +120,10 @@ impl<T: Specification> BackingStore<T> {
                     status: ManifestStatus {
                         status: ManifestStatusState::Pending,
                         events: Vec::default(),
+                        changes: vec![ManifestChangeEvent {
+                            created: now,
+                            event: ManifestChangeEventType::Changed,
+                        }],
                     },
                     created: now,
                     updated: now,

crates/nocontrol/src/manifests.rs

@@ -42,6 +42,8 @@ where
 pub struct ManifestStatus {
     pub status: ManifestStatusState,
     pub events: Vec<ManifestEvent>,
+
+    pub changes: Vec<ManifestChangeEvent>,
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
@@ -53,6 +55,20 @@ pub enum ManifestStatusState {
     Deleting,
 }
 
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct ManifestChangeEvent {
+    pub created: jiff::Timestamp,
+    pub event: ManifestChangeEventType,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+pub enum ManifestChangeEventType {
+    Created,
+    Changed,
+    Deleted,
+}
+
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct ManifestEvent {
     pub owner: WorkerId,