From 5d9e042a02ab04d64dc206a2de1819bd83c40332 Mon Sep 17 00:00:00 2001
From: Hongbin Lu <hongbin034@gmail.com>
Date: Sun, 9 Aug 2020 05:34:12 +0000
Subject: [PATCH] Handle missing of 'networks' stats

The 'networks' stats is present in libnetwork but won't be
present in CNI.

Change-Id: Ibaa65f6b558fcb9f56c6fe5ad77c4aa43050fb6a
---
 zun/container/docker/driver.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/zun/container/docker/driver.py b/zun/container/docker/driver.py
index 5b495ca3e..22adbe5f6 100644
--- a/zun/container/docker/driver.py
+++ b/zun/container/docker/driver.py
@@ -964,7 +964,8 @@ class DockerDriver(driver.BaseDriver, driver.ContainerDriver,
                 if 'Write' == item['op']:
                     io_write = io_write + item['value']
 
-            net_stats = res['networks']
+            # Note(hongbin): CNI network won't have this key
+            net_stats = res.get('networks', {})
             net_rxb = 0
             net_txb = 0
             for k, v in net_stats.items():