Open Stack

Nader,

I would encourage you to first discuss the possible extension with the ML2
team. Rober and Kyle are leading this effort and they have a IRC meeting
every week:
https://wiki.openstack.org/wiki/Meetings#ML2_Network_sub-team_meeting

Bring your concerns on this meeting and get the right feedback.

Thanks,

Edgar

From:  Nader Lahouti <nader.lahouti at gmail.com>
Reply-To:  OpenStack List <openstack-dev at lists.openstack.org>
Date:  Thursday, March 6, 2014 12:14 PM
To:  OpenStack List <openstack-dev at lists.openstack.org>
Subject:  Re: [openstack-dev] [Neutron][ML2]

Hi Aaron,

I appreciate your reply.

Here is some more details on what I'm trying to do:
I need to add new attribute to the network resource using extensions (i.e.
network config profile) and use it in the mechanism driver (in the
create_network_precommit/postcommit).
If I use current implementation of Ml2Plugin, when a call is made to
mechanism driver's create_network_precommit/postcommit the new attribute is
not included in the 'mech_context'
Here is code from Ml2Plugin:
class Ml2Plugin(...):
...
       def create_network(self, context, network):
            net_data = network['network']
...
        with session.begin(subtransactions=True):
            self._ensure_default_security_group(context, tenant_id)
            result = super(Ml2Plugin, self).create_network(context, network)
            network_id = result['id']
...
            mech_context = driver_context.NetworkContext(self, context,
result)
            self.mechanism_manager.create_network_precommit(mech_context)

Also need to include new extension in the  _supported_extension_aliases.

So to avoid changes in the existing code, I was going to create my own
plugin (which will be very similar to Ml2Plugin) and use it as core_plugin.

Please advise the right solution implementing that.

Regards,
Nader.


On Wed, Mar 5, 2014 at 11:49 PM, Aaron Rosen <aaronorosen at gmail.com> wrote:
> Hi Nader, 
> 
> Devstack's default plugin is ML2. Usually you wouldn't 'inherit' one plugin in
> another. I'm guessing  you probably wire a driver that ML2 can use though it's
> hard to tell from the information you've provided what you're trying to do.
> 
> Best, 
> 
> Aaron
> 
> 
> On Wed, Mar 5, 2014 at 10:42 PM, Nader Lahouti <nader.lahouti at gmail.com>
> wrote:
>> Hi All,
>> 
>> I have a question regarding ML2 plugin in neutron:
>> My understanding is that, 'Ml2Plugin' is the default core_plugin for neutron
>> ML2. We can use either the default plugin or our own plugin (i.e.
>> my_ml2_core_plugin that can be inherited from Ml2Plugin) and use it as
>> core_plugin.
>> 
>> Is my understanding correct?
>> 
>> 
>> Regards,
>> Nader.
>> 
>> _______________________________________________
>> OpenStack-dev mailing list
>> OpenStack-dev at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>> 
> 
> 
> _______________________________________________
> OpenStack-dev mailing list
> OpenStack-dev at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
> 

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