[ovirt-devel] [vdsm][mom][jsonrpc] new VDSM interface for MOM

[Adam Litke]

On 13/05/15 22:53 +0200, Piotr Kliczewski wrote:
>On Wed, May 13, 2015 at 9:52 PM, Adam Litke <alitke at redhat.com> wrote:
>> On 11/05/15 04:28 -0400, Francesco Romani wrote:
>>>
>>> Hi everyone,
>>>
>>> I'm working to brush up and enhance my old hack
>>> https://gerrit.ovirt.org/#/c/37827/1
>>>
>>> That patch adds a new MOM interface, to talk with VDSM using the RPC
>>> interface.
>>> On top of that, I want to make efficient use of VDSM API (avoid redundant
>>> call, possibly
>>> issuing only one getAllVmStats call and caching the results, and so forth)
>>>
>>> Next step will be to backport optimizations to current vdsmInterface.
>>> Or maybe, even replacing the new vdsminterface with the new one I'm
>>> developing :)
>>>
>>> I'd like to use the blessed JSON-RPC interface, but what's the recommended
>>> way to
>>> do that? What is (or will be!) the official recommended VDSM external
>>> client interface?
>>>
>>> I thought about patch https://gerrit.ovirt.org/#/c/39203/
>>>
>>> But my _impression_ is that patch will depend on VDSM's internal reactor,
>>> thus is not very
>>> suitable to be used into an external process.
>>
>>
>> I've written my own extremely crude client using the stomp library.
>> Nir also has a patch [1] on gerrit to do this.  Maybe he can provide
>> some insight.  It'd be nice if the vdsm-yajsonrpc package could
>> provide a full-featured client class that could be easily integrated
>> into projects like MOM.
>>
>
>I will try to provide simple client for people to use.

Thanks Piotr!  I'm sure you can come up with a much more  elegant way
to stitch the existing classes together to do what we need.

-- 
Adam Litke