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Re: [libvirt] [PATCH V14 5/5] nwfilter: Display detected IP address in domain XML

On 06/01/2012 07:41 PM, Stefan Berger wrote:
On 06/01/2012 03:05 PM, Eric Blake wrote:
On 05/25/2012 05:56 AM, Stefan Berger wrote:
An example of a displayed XML may then be:

<interface type='bridge'>
<mac address='52:54:00:68:e3:90'/>
<source bridge='virbr0'/>
<target dev='vnet1'/>
<model type='virtio'/>
<filterref filter='clean-traffic'>
<parameter name='CTRL_IP_LEARNING' value='dhcp'/>
<parameter name='IP_LEASE' value=',100'/>
It's a shame that we are making the user parse the single XML entity to
get two pieces of information.  I wonder if it would be better to have:

<parameter name='IP_LEASE_ADDR' value=''/>
<parameter name='IP_LEASE_TIMEOUT' value='100'/>

and reserve two variable names rather than one.

I'll review the code as is, but I would get a second opinion from one of
the Dan's on whether we should change the XML to make xpath queries
easier (basically, XML that crams 2 pieces of information into one
attributes is always harder to use).

Ok, I'll wait for their comment(s).

Any comments regarding the splitting mentioned above ?

I would prefer *not* to split them mainly because I don't like the 'interleaving' of an IP address then its lease timeout then again another IP address and lease timeout etc., but if for XML purposes it's better/cleaner, I'll do it. If split, I think we would *always* have to display both as well. I am thinking of the case of a static IP address having been detected that of course does not have a timeout value, thus displaying '-1'.



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