add filesize to video

app/services/videos/dispatch_callback_service.rb

@@ -13,6 +13,7 @@ class Videos::DispatchCallbackService < ApplicationService
     case params['EventType']
     when 'FileUploadComplete' then # 视频上传完成
       video.file_url = params['FileUrl']
+      video.filesize = params['Size']
       video.upload_success
       video.save!
     when 'SnapshotComplete' then # 封面截图完成

db/migrate/20190819081514_add_filesize_to_videos.rb

@@ -0,0 +1,5 @@
+class AddFilesizeToVideos < ActiveRecord::Migration[5.2]
+  def change
+    add_column :videos, :filesize, :integer, default: 0
+  end
+end