aliyun vod SnapshotComplete event handle

app/services/videos/dispatch_callback_service.rb

@@ -11,12 +11,14 @@ class Videos::DispatchCallbackService < ApplicationService
 
     # TODO:: 拆分事件分发
     case params['EventType']
-    when 'FileUploadComplete' then
+    when 'FileUploadComplete' then # 视频上传完成
       video.file_url = params['FileUrl']
       video.upload_success
       video.save!
+    when 'SnapshotComplete' then # 封面截图完成
+      return if video.cover_url.present?
 
-      GetAliyunVideoInfoJob.perform_later(video.uuid)
+      video.update!(cover_url: params['CoverUrl'])
     end
 
   rescue => ex