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Hi Dan

>> > Matt
>> Thank you for your comment in launchpad
>> https://bugs.launchpad.net/nova/+bug/1031096
>>
>>
>> Quantum team get consensus in a Netstack meeting today to propose
>>  port-id for requested networks. I took the job.
>> At first, i thought i can write extension for this. But as you say
>>  we should add port-id for the core API which is only used for quantum API
>> 2.0.
>
>
> Hi Nachi, why is it that we can't implement this as an API extension (even
> if passing in a network-id is in fact part of the core API)?

I can write extension implemented in core API code.
My understanding of definition of extension was "the code is in
extension directory".
However , the implementation for extensions are also in outside of
extension directory as you mentioned in bug report.
# I could see no clear policy for this.

IMO, the key concept of extension is let users to select the function
to use. ( User can turn off the extension. )
So if we enable port_id when we use quantumV2 only, the concept will
be satisfied.

Nachi

> dan
>
>
>>
>> My WIP code is like [1]. This change keep backward compatibility.
>>
>> > Yong, Dan
>> Matt said "you'd be breaking API compatibility and thus the API spec."
>>
>> This work will change API, so some consensus in community is needed to
>> add port_id.
>> I wanna discuss about the spec in this thread.
>> If the community rejects this addition, I'll implement fixed_ip one
>>  ( see previous my message )
>>
>> [1] WIP code for adding port_id ( Not tested)
>>
>> +    def _get_port(self, port_id):
>> +        if FLAGS.network_api_class !=
>> +        "nova.network.quantumv2.api.API":
>> +            msg = _("Unknown argment : port_id")
>> +            raise exc.HTTPBadRequest(explanation=msg)
>> +
>> +        if port_id and not utils.is_uuid_like(port_id):
>> +            msg = _("Bad port format: port uuid is "
>> +                    "not in proper format "
>> +                    "(%s)") % port_id
>> +            raise exc.HTTPBadRequest(explanation=msg)
>> +        try:
>> +            port =
>> quantumv2.get_client(context).list_networks(**search_opts)
>> +            if port.device_id:
>> +                raise Exception("Port id %s is already used" % port_id)
>> +            return port
>> +        except Exception as e:
>> +            msg = _("This port_id can't used "
>> +                    "(%s)") % port_id
>> +            raise exc.HTTPBadRequest(explanation=msg)
>> +
>>      def _get_requested_networks(self, requested_networks):
>>          """Create a list of requested networks from the networks
>> attribute."""
>>          networks = []
>>          for network in requested_networks:
>>              try:
>> +                port_id = network.get('port_id', None)
>> +                if port_id:
>> +                    port = self._get_port()
>> +                    network['uuid'] = port.network_id
>> +                    network['fixed_ip'] = port.fixed_ip
>> +
>>
>> Thank you in advance
>> Nachi Ueno
>>
>> >> Hi Nachi,
>> >> It is seemingly a way to make it work, but I think we are thinking to
>> >> provide 'port-id' or just 'port' to specify the top resource in quantum
>> >> API.
>> >> fix ip is not one.
>> >>
>> >> Besides, Port can be assigned to more than one fixed IP.
>> >
>> >Ah, It it true.
>> >OK I'll implement port id version.
>> >
>> >> Imagine in horizon, we created many networks, ports and subnets, but
>> >> when
>> >> booting a VM, we use a fixed_ip to specify our resource indirectly.
>> >
>> >> By the way, we should use openstack-dev at list.openstack.org
>> >
>> >Sorry, I changed my mail address recently. But  launchpad rejects new
>> >mail to receive.
>> >I'll find way to fix this.
>> >
>> >Thanks
>> >
>> >
>> >Nachi
>> >
>> >> Thanks
>> >> Yong Sheng Gong
>> >>
>> >> -----netstack-bounces+gongysh=cn.ibm.com at lists.launchpad.net wrote:
>> >> -----
>> >> To: openstack at lists.openstack.org, netstack at lists.launchpad.net
>> >> From: Nachi Ueno
>> >> Sent by: netstack-bounces+gongysh=cn.ibm.com at lists.launchpad.net
>> >> Date: 07/31/2012 08:33AM
>> >> Subject: [Netstack] [Quantum][Nova] requested_id and port spec
>> >>
>> >> Hi Dan,folks
>> >>
>> >> As we talked in netstack IRC meetins, I submit this as bug.
>> >> https://bugs.launchpad.net/nova/+bug/1031096
>> >>
>> >> I tried to write this, but  the code looks very ugly in order to keep
>> >> backward compatibility.
>> >> So I wanna propose an alternative design.
>> >> In this design, we will use fixed_ip as a temporary identifier of the
>> >> port.
>> >>
>> >> 1. create port
>> >>    fixed_ip assigned
>> >>
>> >> 2. specify  the fixed_ip in nova boot
>> >>
>> >> 3. If the fixed_ip is specified,
>> >>   nova.network.quantumv2.api.API will check existing port who use the
>> >> fixed_ip.
>> >>
>> >>   if there are existing port and device_id is None
>> >>       use the port_id.
>> >>
>> >>   if there are no existing port.
>> >>        create new port with the fixed_ip
>> >>
>> >> This approach needs no client side change.
>> >>
>> >> Thank you in advance
>> >> Nachi Ueno
>> >>
>> >> --
>> >> Mailing list: https://launchpad.net/~netstack
>> >> Post to     : netstack at lists.launchpad.net
>> >> Unsubscribe : https://launchpad.net/~netstack
>> >> More help   : https://help.launchpad.net/ListHelp
>> >>
>> >--
>> >Nachi Ueno
>> >email:nati.ueno at gmail.com
>> >twitter:http://twitter.com/nati
>>
>> _______________________________________________
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>> Post to     : openstack at lists.launchpad.net
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>
>
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Dan Wendlandt
> Nicira, Inc: www.nicira.com
> twitter: danwendlandt
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>



-- 
Nachi Ueno
email:nati.ueno at gmail.com
twitter:http://twitter.com/nati