[Dev] [Cynara] Async admin API proposal

Zhang, Xu U xu.u.zhang at intel.com
Mon Aug 25 09:10:31 GMT 2014

Hi Tomasz,

Terri will help us to implement how Crosswalk integrate Cynara to perform API permission check. And she is the owner to implement integration part. I think Terri will give your feedback on latest Cynara's change.  
Also I will review the code and share the status to Crosswalk team. If I have some suggestions, I will reply the mail again.

Zhang Xu
> -----Original Message-----
> From: Tomasz Swierczek [mailto:t.swierczek at samsung.com]
> Sent: Monday, August 25, 2014 4:14 PM
> To: Zhang, Xu U
> Cc: dev at lists.tizen.org; Ohly, Patrick; Aleksander Zdyb; Jacek Bukarewicz;
> Zofia Abramowska; Oda, Terri
> Subject: RE: [Dev] [Cynara] Async admin API proposal
> Hi Zhang!
> Hope you're doing well out there in Crosswalk team.
> Recently we have been working on Cynara module that will be conceptually a
> replacement for the idea of SAPI that you have been discussing some time ago
> with Jose on the mailing list.
> Right now we are designing asynchronous API for the module and we are
> looking for feedback. Aside from DBus, Crosswalk will be the biggest client of
> Cynara and we think that your feedback will be very valuable for us.
> Here are the two versions of API debated (quite heavily in this thread):
> V1: https://review.tizen.org/gerrit/26245
> V2: https://review.tizen.org/gerrit/26426
> If you could review then and share with your colleagues working on Crosswalk
> directly that would be a lot of help for us. Our main doubts are right now over
> the cache mechanism and its transparency in the API.
> Kind Regards,
> Tomasz Świerczek
> Samsung R&D Institute Poland
> Samsung Electronics
> Office +48 22 377 95 59
> Cell +48 503 135 021
> t.swierczek at samsung.com
> -----Original Message-----
> From: Dev [mailto:dev-bounces at lists.tizen.org] On Behalf Of Tomasz
> Swierczek
> Sent: Monday, August 25, 2014 10:03 AM
> To: 'Patrick Ohly'; Aleksander Zdyb
> Cc: dev at lists.tizen.org
> Subject: Re: [Dev] [Cynara] Async admin API proposal
> > You are designing an API whose primary purpose at this point is to be
> > used in dbus-daemon.
> >
> > If there are other users of it, then feel free to get their feedback.
> > You have mine and I don't have anything else technical to add, besides
> > a small rant below.
> >
> [Tomasz] Patrick, we'd love to hear feedback from Crosswalk team, for example,
> but they remain silent.
> > (...)
> >
> > <rant> You seem to think that it should be the D-Bus developer's job
> > to adapt D-Bus to the Cynara API, not the other way around. I'm sorry
> > to disappoint you, but D-Bus is the established project here which
> > doesn't care about what Tizen does, while Cynara is the newcomer which
> > will not work well without D-Bus support. D-Bus is in maintenance,
> > Cynara under active development. So wouldn't it make sense to ensure
> > that the combination works by adapting *Cynara* and minimizing changes to
> D-Bus?
> > </rant>
> >
> [Tomasz] Patrick - yes, you are right. Since we want Cynara to appear in already
> well established, known and maintained project, we should take care of its
> needs with high priority. Tomorrow Lucas is getting back to the office and we
> will decide what should we do. From your discussion I see that there are two
> more-or-less intelligent ways of dealing with cache problem:
> either enable the answer to be returned by return value of the async call, or
> expose cache directly with dedicated API. Personally I believe that the 1st
> option is better - simply because it is easier to get rid of it should we decide to
> do so. As for overall discussion on this matter, the fact that DBus people (or
> DBus-related, DBus-knowing - don't have better idea how to call you Patrick)
> have given us a lot of feedback first is something that should be appreciated.
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