func resizeAndStore(storage tenpu.BlobStorage, meta tenpu.MetaStorage, thumbnailStorage *Storage, att *tenpu.Attachment, spec *ThumbnailSpec, thumbName string, id string) (thumb *Thumbnail, err error) { var buf bytes.Buffer storage.Copy(att, &buf) if buf.Len() == 0 { return } thumbAtt := &tenpu.Attachment{} body, width, height, err := resizeThumbnail(&buf, spec) if err != nil { return } err = storage.Put(att.Filename, att.ContentType, body, thumbAtt) if err != nil { return } err = meta.Put(thumbAtt) if err != nil { return } thumb = &Thumbnail{ Name: thumbName, ParentId: id, BodyId: thumbAtt.Id, Width: int64(width), Height: int64(height), } err = thumbnailStorage.Put(thumb) return }