Merge pull request 'fix 1542' (#1544) from opt-notebook into V20220228

Reviewed-on: https://git.openi.org.cn/OpenI/aiforge/pulls/1544
Reviewed-by: ychao_1983 <ychao_1983@sina.com>

routers/repo/modelarts.go

@@ -257,13 +257,15 @@ func NotebookShow(ctx *context.Context) {
 	}
 
 	var datasetDownloadLink string
-	if task.Uuid != "" && task.UserID == ctx.User.ID {
-		attachment, err := models.GetAttachmentByUUID(task.Uuid)
-		if err == nil {
-			datasetDownloadLink = attachment.S3DownloadURL()
+	if ctx.IsSigned {
+		if task.Uuid != "" && task.UserID == ctx.User.ID {
+			attachment, err := models.GetAttachmentByUUID(task.Uuid)
+			if err == nil {
+				datasetDownloadLink = attachment.S3DownloadURL()
+			}
 		}
 	}
-
+	
 	ctx.Data["datasetDownloadLink"] = datasetDownloadLink
 	ctx.Data["task"] = task
 	ctx.Data["jobID"] = jobID