Open Stack

I hate to be that guy but I have to bump this thread to try to get answer.

Can anybody help me out?

On 10/28/13 4:06 PM, Drew Fisher wrote:
> Chris and Phil,
> 
> Thanks for the clue on using scheduler_hints as a template.  I've
> implemented a V2 API version of my extension to get started (for
> stable/grizzly) and I can see all of the data moving from
> nova/api/openstack/compute/servers.py to nova/compute/api.py.create() ->
> _create_instance() -> _validate_and_provision_instance() ->
> scheduler_rpcapi.run_instance().
> 
> From here, I can get into compute/manager.py and in _run_instance(), I
> can see that my new data is sitting in a gross triple dictionary:
> 
> filter_properties["request_spec"]["instance_properties"]["newflag"]
> 
> Obviously this is gross and has to be wrong but I'm not seeing what I
> might have missed walking back through my extension (it's basically a
> C&P clone of contrib/scheduler_hints.py) and my changes to servers.py
> (stepping through pdb shows all the right things in all the right places).
> 
> I would love to be able to post some code to show my issue, but I can't
> quite do it just yet (see domain name in email address).
> 
> Any ideas for how to get my new flags into the top level instance object
> as handled by manager._run_instance()?
> 
> Thanks for the help so far!  I just need one more little piece and I'll
> have it.
> 
> -Drew
> 
> 
> On 10/26/13 4:53 AM, Christopher Yeoh wrote:
>> Hi Drew,
>>
>> Unfortunately there's not much up to date documentation on how to write
>> an api extension (its on the TODO list), but as Phil mentioned looking
>> at existing extensions like scheduler_hints is a good place to start.
>>
>> You'll need to decide whether you want to write a V2 and V3 API version
>> of your extension or only V3. V3 is currently marked experimental but
>> should (hopefully!) become the default API with the release of Icehouse.
>> So if you submit a V2 extension you will have to also submit a V3 version.
>>
>> As Phil mentioned, for V2 you'll need to add both a new extension file,
>> plus modify nova/api/openstack/compute/servers.py to look for an pass
>> the new parameter to compute_api.create. For V2 all parameters have to
>> be explicitly handled in servers.py
>>
>> For V3 (see nova/api/openstack/compute/plugins/v3/) you will only need
>> to add a new extension with no modifications to servers.py.
>> access_ips.py is probably a good example for V3 to see how parameters
>> can be passed to compute_api.create by an extension. In access_ips, see
>> the create function in AccessIPsController and server_create in
>> AccessIPs. Note that you will need to add some entries in setup.cfg for
>> the V3 plugin to be detected.
>>
>> Depending on how your extension works you may also need to add entries
>> to nova/etc/policy.json as well.
>>
>> Regards,
>>
>> Chris
>>
>>
>>
>>
>> On Sat, Oct 26, 2013 at 7:04 AM, Day, Phil <philip.day at hp.com
>> <mailto:philip.day at hp.com>> wrote:
>>
>>     Hi Drew,
>>
>>     Generally you need to create a new api extention and make some
>>     changes in the main servers.py
>>
>>     The scheduler-hints API extension does this kind of thing, so if you
>>     look at:  api/openstack/compute/contrib/scheduler_hints.py for how
>>     the extension is defined, and look  in
>>     api/poenstack/compute/servers.py code for "scheduler_hints"   (e.g.
>>     _extract_scheduler_hints()  ) then that should point you in the
>>     right direction.
>>
>>     Hope that helps,
>>     Phil
>>
>>     > -----Original Message-----
>>     > From: Drew Fisher [mailto:drew.fisher at oracle.com
>>     <mailto:drew.fisher at oracle.com>]
>>     > Sent: 25 October 2013 16:34
>>     > To: openstack-dev at lists.openstack.org
>>     <mailto:openstack-dev at lists.openstack.org>
>>     > Subject: [openstack-dev] extending nova boot
>>     >
>>     > Good morning!
>>     >
>>     > I am looking at extending nova boot with a few new flags.  I've
>>     found enough
>>     > examples online that I have a working extension to novaclient (I
>>     can see the
>>     > new flags in `nova help boot` and if I run with the --debug flag I
>>     can see the
>>     > curl requests to the API have the data.
>>     >
>>     > What I can't seem to figure out is how nova-api processes these extra
>>     > arguments.  With stable/grizzly bits, in
>>     > nova/api/openstack/compute/servers.py, I can see where that data is
>>     > processed (in Controller.create()) but it doesn't appear to me
>>     that any
>>     > leftover flags are handled.
>>     >
>>     > What do I need to do to get these new flags to nova boot from
>>     novaclient
>>     > into nova-api and ultimately my compute driver?
>>     >
>>     > Thanks for any help!
>>     >
>>     > -Drew Fisher
>>     >
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