fix: correct the retention webhook payload (#18462)

Fix the incorrect number of total and retained in the retention webhook
payload, and completes the deleted_artifacts field.

Fixes: #18428

Signed-off-by: chlins <chenyuzh@vmware.com>

src/controller/event/handler/webhook/artifact/retention.go

@@ -119,8 +119,8 @@ func (r *RetentionHandler) constructRetentionPayload(ctx context.Context, event
 		Operator: execution.Trigger,
 		EventData: &model.EventData{
 			Retention: &evtModel.Retention{
-				Total:             task.Total,
-				Retained:          task.Retained,
+				Total:             event.Total,
+				Retained:          event.Retained,
 				HarborHostname:    hostname,
 				ProjectName:       event.Deleted[0].Target.Namespace,
 				RetentionPolicyID: execution.PolicyID,
@@ -138,8 +138,11 @@ func (r *RetentionHandler) constructRetentionPayload(ctx context.Context, event
 		}
 		if len(target.Tags) != 0 {
 			deletedArtifact.NameAndTag = target.Repository + ":" + target.Tags[0]
+		} else {
+			// use digest if no tag
+			deletedArtifact.NameAndTag = target.Repository + "@" + target.Digest
 		}
-		payload.EventData.Retention.DeletedArtifact = []*evtModel.ArtifactInfo{deletedArtifact}
+		payload.EventData.Retention.DeletedArtifact = append(payload.EventData.Retention.DeletedArtifact, deletedArtifact)
 	}
 
 	for _, v := range md.Rules {

src/controller/event/metadata/retention.go

@@ -25,6 +25,8 @@ func (r *RetentionMetaData) Resolve(evt *event.Event) error {
 		Status:    r.Status,
 		Deleted:   r.Deleted,
 		TaskID:    r.TaskID,
+		Total:     r.Total,
+		Retained:  r.Retained,
 	}
 
 	evt.Topic = event2.TopicTagRetention

src/controller/event/topic.go

@@ -353,6 +353,8 @@ type RetentionEvent struct {
 	OccurAt   time.Time
 	Status    string
 	Deleted   []*selector.Result
+	Total     int
+	Retained  int
 }
 
 func (r *RetentionEvent) String() string {