[Opensim-dev] Global identifiers

[diva at metaverseink.com]

A couple of clarifications:

1 - OpenSim is strict about differentiating between local resources and 
global resources. For local resources, plain UUIDs are always used, not 
global IDs, so not to impact in any way any configurations that ppl may 
have. Grid operators have a fair amount of freedom to decide what kind 
of UUID they use (in principle, although in practice we use whatever 
scheme libomv uses). Global names are only used for "foreign" resources.

2 - OpenSim uses DNS resolution aggressively, and I don't think it needs 
to reinvent the wheel in that respect.

3 - OpenSim probably won't solve the general issue of stale resources. 
If someone once was identified by "ibm.com/smith" and then got laid off 
from IBM, the virtual identity "ibm.com/smith" will be stale. But 
references to it will persist on the Internets... I don't think we'll be 
able to fix that.

Ai Austin wrote:
> diva wrote:
>> I'm about to introduce global identifiers, so that I can make friends
>> and IM work on the hypergrid, and would like feedback on the best form
>> of these identifiers.
> 
>> Here are some options:
>> ... Thoughts?
> 
> 
> A couple of thoughts and observations Diva...
> 
> Could the taxonomy of "types" you use cause problems if the chosen 1-1 
> mapping for a UUID is not felt to work well i future.
> 
> "user" is also perhaps a different notion to a specific "avatar"
> 
> It would be nice if any UUID in a URI you use can be resolved (e.g. to 
> the avatar name) by any host that has the mapping (like the distributed 
> nature of DNS works), so its not dependent on the host continuing to 
> exist, or to be up at the time information on the avatar is sought.
> 
> AS an example, we have shifted our data bases between machines and have 
> done so 3 or 4 times since we started running OpenSim, carrying the 
> UUIDs of avatars (and the UIIDs of regions we use) forwards to the new 
> data bases.
> 
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