[Opensim-dev] Presenting unga: UGAIM grid servers with PHP

[Diva Canto]

Hi,

"The methods the simulator needs" have changed considerably from 0.6.x 
to pre-0.7. Hence the good advice that many people have voiced that you 
look into what's coming rather than looking into the past. Looking into 
what's coming means looking in pre-0.7 code, OpenSim.Services.Interfaces 
-- those are the interfaces that the simulator needs implemented 
somewhere. Also look here for info about the services: 
http://opensimulator.org/wiki/0.7_Planning

Another thing that changed was that now the simulator does not impose 
any particular on-the-wire protocol for accessing the services. Yes, 
there are reference implementations (OpenSim.Services.Connectors) 
designed specifically for the ROBUST service implementations, so you may 
want your service infrastructure to respond to those -- and that would 
make your infrastructure different from SimianGrid. But you may want to 
make your infrastructure more immune to changes in OpenSim core 
reference implementations, rely  on the abstract Interfaces only, and do 
your own C# connectors. That is exactly what the SimmianGrid 
infrastructure did/does.

Alternatively, you may want to wait until 0.7 comes out, followed by 
documentation, which would be fine too.

[Before projects reach a certain level of maturity and write down their 
extension "contracts", it's wise for extenders to keep a very close 
watch over what's going on in core development. The "alpha-ness" of 
OpenSim at this point is not so much in the instability of the run-time, 
but in the instability of the extension interfaces. In my view, we're 
almost reaching the point of maturity that will take us out of alpha, 
but we're not quite there yet.]

Crista / Diva

On 4/7/2010 3:43 PM, Impalah Shenzhou wrote:
> That's what I wanted to say, but my drawing abilities are non-existent :-P
>
> The "support" services for opensim can be anything while they use http 
> and implement the methods the simulator needs. Anyway, I repeat, unga 
> is just another option.
>
> Cheers
>
>
>
> 2010/4/8 Justin Clark-Casey <jjustincc at googlemail.com 
> <mailto:jjustincc at googlemail.com>>
>
>     Impalah Shenzhou wrote:
>
>         Please excuse my "violent" reaction. I misunderstood your
>         comments.
>
>         As soon as I have some free time (I suppose, for the weekend)
>         I will test unga with the newer (development) opensim
>         versions. According to the wiki there shouldn't be any
>         problem, but maybe I forgot some needed interface.
>
>         Take into account that I used 0.6.5 and 0.6.6 versions of
>         opensim for the development, and these seem to be stable versions.
>
>
>     I would say that the picture looks like this
>
>     Simulator          Services
>
>     +---------+      +------------+
>     | OpenSim | ===> | SimianGrid |
>     +---------+      |     or     |
>                    |   ROBUST   |
>                    |     or     |
>                    |    UNGA    |
>                    +------------+
>
>     So you can have what you like at the services end as long as it
>     implements the set of interfaces shown as ===>.  So services can
>     be provided by SimianGrid, ROBUST, an UNGA which looks a lot like
>     the old UGAIM in terms of architecture or anything else.
>
>     The issue that you'll have, Impalah, is that ===> has changed
>     quite a bit since 0.6.6, though I don't have the particulars to
>     hand.  These changes happened at the same time as ROBUST but the
>     two things are actually conceptually separate.
>
>     -- Justin
>
>         Cheers
>
>
>
>         2010/4/7 Michael Cerquoni <nebadon2025 at gmail.com
>         <mailto:nebadon2025 at gmail.com> <mailto:nebadon2025 at gmail.com
>         <mailto:nebadon2025 at gmail.com>>>
>
>
>            I don't know all the of the differences honestly, I was not
>         trying
>            to discourage you from doing it, but i do know that the older
>            versions of OpenSimulator that conneceted to the C# UGAIM
>         services
>            will no longer connect to C# Robust Backed services, my
>         only concern
>            was you might spend a lot of time coding and run into the same
>            thing, as long as the current master GIT opensimulator can
>         connect
>            though you should be fine.
>
>            --     Michael Emory Cerquoni - Nebadon Izumi @
>         http://osgrid.org
>
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>
>
>         ------------------------------------------------------------------------
>
>
>
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>
>
>     -- 
>     Justin Clark-Casey (justincc)
>     http://justincc.org
>     http://twitter.com/justincc
>
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