Github user wido commented on a diff in the pull request:
https://github.com/apache/cloudstack/pull/784#discussion_r39248790
--- Diff: systemvm/patches/debian/config/opt/cloud/bin/cs/CsAddress.py ---
@@ -95,9 +95,25 @@ def get_control_if(self):
return ip
return None
+ def check_if_link_exists(self,dev):
+ cmd="ip link show dev %s"%dev
+ result=CsHelper.execute(cmd)
+ if(len(result)!=0):
+ return True
+ else:
+ return False
+
+ def check_if_link_up(self,dev):
+ cmd="ip link show dev %s | tr '\n' ' ' | cut -d ' ' -f 9"%dev
--- End diff --
We should keep as much logic in Python as possible. The performance
difference is small, but with tr and grep you spawn subprocessess again.
But as @remibergsma says. Try to open that file in /sys and parse the
contents. You can use the simple Python file functions.
No need to execute IP. The less subprocesses we execute, the better.
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