[Opensim-dev] OGP module and the grand re-factor...

[Cristina Videira Lopes]

David,

With this latest refactoring came the new Simulation service,  
represented by ISimulationService. Please take a look at it. The data  
structures that it currently takes for creating and updating agents  
are still incomplete (one of them needs more data for foreign users),  
but I think you'll get the idea very quickly. We may be able to come  
up with the basic common data, and then have more specialized data  
structures for each agent transfer protocol.

I took a look at the OGP module the other day, and it really looked to  
me like it can be written as an alternative handler that receives/ 
sends the data from/to the wire using the specific protocol that you  
guys have been cooking, but that calls the existing simulation service  
exactly like the existing handler. The existing handler is in  
OpenSim.Server.Handlers.Simulation.

There were several important details that you obviously need to make  
decisions upon, like -- do you really want to create a persistent  
account for foreign users? etc. As I was about to do the rewrite of  
that module for the new services, it was obvious that I couldn't make  
that call, or I would be designing OGP myself :)

As I was hoping, I think this will be an excellent vehicle to discuss  
similarities and differences between OGP and HG and any other agent  
transfer protocols out there.

Crista / Diva

On Jan 7, 2010, at 1:29 PM, David W Levine wrote:

>
> There's a more recent copy on the github repository linked to out of  
> gridforge. (gridforge still being SVN is... a wee challange)  The  
> tree there is a light fork off
> of September.  There are a couple of changes which permit inventory  
> to run from caps hosted by the Agent Service in that tree, as well  
> as some code to manage
> reflecting region inventory interactions to the Agent Service.   
> git://github.com/zekizeki/agentservice.git   That should be current.
>
> I've been giving the right way to sync up a bit of thought. I  
> suspect that the OGP module really wants to be built at a different  
> layer in the post re-factor world, probably
> as a service, using the connectors to talk to the rest of the system  
> like any other well behaved component. The basic task of the OGP  
> code is to parse the request from
> a remote Agent Service, decide whether to accept it or not, and  
> then, setup the region to welcome the client. Currently the OGP code  
> stuff things into the region with a bit
> of a sledghammer. I'd think doing it properly, with connectors would  
> be much nicer for everyone, and isolate the code properly. I suspect  
> the biggest tricky bit is whether
> the right bits are exposed to have the region ready to talk to the  
> client with the right agentID, secure Circuit ID, and a properly  
> setup user agent to match. I'll start looking
> at that in the current connector code.
>
> Overall, the connector approach, and getting as many of the services  
> decoupled is clearly the way to go, especially, if we want to allow  
> everyone to explore a range of
> messaging, inventory and asset serving models over the next chunk of  
> grid evolution. I'm hopeful we can start getting some really useful  
> evolution to happen pairwise in the
> clients and the services this year, which should make everyone's  
> life more flexible.
>
> - David
>
>
>
> opensim-dev-bounces at lists.berlios.de wrote on 01/06/2010 01:14:32 PM:
>
> > [image removed]
> >
> > Re: [Opensim-dev] OGP module and the grand re-factor...
> >
> > diva
> >
> > to:
> >
> > opensim-dev
> >
> > 01/06/2010 01:14 PM
> >
> > Sent by:
> >
> > opensim-dev-bounces at lists.berlios.de
> >
> > Please respond to diva, opensim-dev
> >
> > Hi David,
> >
> > First question is: what's the most updated version of OGP? Is it  
> what's
> > currently in the core distro, or do you have something more recent
> > somewhere else?
> >
> > Diva / Crista
> >
> > David W Levine wrote:
> > >
> > > I gather the current grand refactoring is washing up on the  
> shores of
> > > the OGP module (which is hardly surprising) So, I'll raise my  
> hand and
> > > say "I'll make sure it gets sorted out" I gather Melanie and  
> DIva are
> > > looking
> > > for that hand raise, so here it is. Since I'm also about to look  
> at
> > > adding in X.509 based counterpart validation to the code this  
> month,
> > > I'll be in there anyway. So... Lets sort out what's needed to  
> make this
> > > as painless as
> > > possible for everyone.
> > >
> > >
> > >
> > > - David / Zha
> > >
> > >
> > >  
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