[Opensim-dev] Restructuring IClientAPI - thoughts wanted

[Dahlia Trimble]

I'd love to see a simple IClientAPI that totally abstracted all of the
client implementation dependancies and made it easy to use alternate viewers
besides the Linden one. What I really want is something simple I can plug in
and get R/W access to Scene and notification of Scene updates.

On Sat, Sep 13, 2008 at 8:03 PM, Frisby, Adam <adam at deepthink.com.au> wrote:

> My thoughts for that was along the lines of:
>
> [SERVER] Client connecting at WW.XX.YY.ZZ, supports <InstantMessaging,
> Chat, Primitives>.
>
> Adam
>
> > -----Original Message-----
> > From: opensim-dev-bounces at lists.berlios.de [mailto:opensim-dev-
> > bounces at lists.berlios.de] On Behalf Of Melanie
> > Sent: Saturday, 13 September 2008 8:10 PM
> > To: opensim-dev at lists.berlios.de
> > Subject: Re: [Opensim-dev] Restructuring IClientAPI - thoughts wanted
> >
> > Is there even a need to enumerate?
> >
> > Basically, each class is either an event consumer or a message
> > sender. IN either case, they would know the interface they're
> > looking for. So, enumeration seems unnecessary.
> > If we do need to do it, it would be infrequent, so the performance
> > hit of reflection seems very much acceptable.
> >
> > if (client is IInstantMessageService)
> >         ((IInstantMessageService)client).OnInstantMessage +=
> > OnInstantMessage;
> >
> > Looks like a winner!
> >
> > +1
> >
> > Melanie
> >
> > Frisby, Adam wrote:
> > > Slight correction suggestion, IClientAPI actually is redundant in
> > that situation - there's no reason why we need to keep HasInterface as
> > long as we can do "Client is <type/interface>". GetInterfaces() could
> > be replaced with a quick search via reflection (GetTypes)
> > >
> > > Adam
> > >
> > > From: opensim-dev-bounces at lists.berlios.de [mailto:opensim-dev-
> > bounces at lists.berlios.de] On Behalf Of Frisby, Adam
> > > Sent: Saturday, 13 September 2008 7:41 PM
> > > To: opensim-dev at lists.berlios.de
> > > Subject: [Opensim-dev] Restructuring IClientAPI - thoughts wanted
> > >
> > > I'm in the process of adding support for some alternate clients to
> > OpenSim, and one of the things I'm noticing is that there is one one
> > chunk of OpenSim in particular that is highly "LL-Specific" in how it
> > treats things - it's also comparatively a very small chunk of OpenSim
> > that might actually be fixable quite easily.
> > >
> > > That is to say, IClientAPI - I'm thinking of replacing IClientAPI
> > with a very small interface:
> > >
> > > bool                       IClientAPI.HasInterface<T>();
> > > type[]                   IClientAPI.GetInterfaces();
> > >
> > > Then replacing the current web of .Xyz with smaller more discrete
> > interfaces such as:
> > >
> > >
> > > IClientInstantMessage {
> > >
> > > SendMessage(...);
> > >
> > > event OnNewMessage;
> > >
> > > }
> > >
> > > We can do checks on them in our modules, where once we did:
> > >
> > > OnNewClient(IClientAPI client) {
> > >      client.OnNewMessage += messageHandler;
> > > }
> > >
> > > We replace with
> > >
> > >
> > > OnNewClient(IClientAPI client) {
> > >
> > >      If(client.HasInterface<IClientInstantMessage>()) {
> > >
> > >           ((IClientInstantMessage)client).OnNewMessage +=
> > messageHandler;
> > >
> > > }
> > >
> > > }
> > >
> > > The resulting code is then more friendly for third party clients, and
> > clients don't need to support the full set of functionality to register
> > as valid Clients inside of OpenSim.
> > >
> > > What's everyone's thoughts here?
> > >
> > > Good idea / bad / anyone got any better?
> > >
> > > Adam
> > >
> > >
> > >
> > > ---------------------------------------------------------------------
> > ---
> > >
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