From fd55f8ff21be3a84a9b245637d43a064e569e37a Mon Sep 17 00:00:00 2001
From: liusheng <liusheng@huawei.com>
Date: Wed, 13 Sep 2017 11:10:38 +0800
Subject: [PATCH] Directly return if listing server return empty

Avoid unnecessary process if listing server return empty list.

Change-Id: Ia82de76b306b38d9206a8bacf235bfc1db0440fc
---
 moganclient/osc/v1/server.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/moganclient/osc/v1/server.py b/moganclient/osc/v1/server.py
index abf1cd6..3f5e8c2 100644
--- a/moganclient/osc/v1/server.py
+++ b/moganclient/osc/v1/server.py
@@ -379,6 +379,8 @@ class ListServer(command.Lister):
 
         data = bc_client.server.list(detailed=True,
                                      all_projects=parsed_args.all_projects)
+        if not data:
+            return (), ()
         net_client = self.app.client_manager.network
         addr_fmt = functools.partial(cli_utils.addresses_formatter, net_client)
         formatters = {'addresses': addr_fmt,