[Opensim-dev] OpenSim Library

[diva at metaverseink.com]

What you're describing is exactly the process I first had in mind for 
doing this. It would work both for standalones and grids. However I 
decided not to do it like that for a couple of reasons:

1) There is a horrible dependency in IARs to scenes -- precisely related 
to decoding that and other fields that encode UUIDs. The IAR facility 
instantiates SceneObjectGroup so that it can reach the UUIDs inside; 
that means that anything that uses IAR for other purposes  needs to 
include the entire OpenSim.Region.Framework.dll, which is one of the 
biggest DLLs of OpenSim, essentially the core of the simulator. In other 
words, if you want to do anything with IARs right now, you need to load 
the simulator code... it's so wrong that I couldn't force myself to do this.

2) Even if that dependency didn't exist, the process you describe would 
still be a quick & dirty hack. As Adam pointed out, now that we have 
archives, it doesn't make any sense to load the library from the file 
system representation that the current Library uses. We should load the 
Library from archives, no need to extract them into the file system first.

We are currently refactoring the user services -- the last push to move 
everything to the new services architecture. We're going to have to fix 
the Library issues too, to some extent, because right now in grid mode 
the library is being instantiated by the user server, which is a mess. 
But the new IAR library load facility won't be on for grids until that 
nasty dependency (1) is eliminated -- there's no way *I* will code up a 
library service that loads OpenSim.Region.Framework.dll... (maybe 
someone else will do it, but not me)


Ursula MATOVA wrote:
> Wall, in grid mode, it's possible to use iar content to add objects to  
> OpenSim Library "by hand" :
> 
> 1/ untar the IAR file ( tar -xf archive.iar )
> 2/ find ".xml" files in the assets directory
> 3/ create entry in "ObjectsAssetSet.xml"
> 4/ create entry in "ObjectsLibraryItems.xml"
> 
> Clear you client cache & restart OpenSim ...
> 
> The only point is : you cannot rez objects directly from OpenSim  
> Library ... you first need to copy them to your Inventory.
> It's working like a charm even if those operations need to be automated.
> 
> I have one question about textures defined in the xml file :
> 
> In the IAR archive, you have all jp2 textures files used in objects,  
> but there are no references to them into the xml file ( I mean no  
> references to their UUID ).
> 
> The only thing is something like that :
> 
> <TextureEntry>D8A5VoXjdbelfuLe7gQXwgpUpwVqTnrFznsGUr19LB2/ 
> AAAAAAAAAACAPwAAAIA/AAAAAAAAAAAAAAAAAAAA</TextureEntry>
> 
> I guess that's some special encoding ... but cannot find the "link"  
> between the texture itself, it's UUID and that line.
> 
> Can somebody explain that ?
> 
> Because, I'm sure that you need to load textures too, not only the  
> xml. specially in case of using the assets in a foreign grid/database.
> 
> Thanks in advance,
> 
> Ursula.
> ( Sorry my english is poor today :D )
> 
> Le 29 déc. 09 à 05:03, Robert Martin a écrit :
> 
>> On Mon, Dec 28, 2009 at 10:55 PM,  <diva at metaverseink.com> wrote:
>>> Not the most elegant thing to do, but if you do
>>> $tar -tvf archive.iar
>>> you'll get a manifest of sorts of what's inside.
>>>
>> i pulled up the file in a text editor (after unpacking) and there
>> seems to be some sort of XML header and then i would guess the various
>> assets all packed into a single file
>>
>> so does anybody have a good collection of IAR files (more than say a
>> dozen)? if you need hosting i do have some webspace i can set you up
>> with.
>>
>>
>> -- 
>> Robert L Martin
>> _______________________________________________
>> Opensim-dev mailing list
>> Opensim-dev at lists.berlios.de
>> https://lists.berlios.de/mailman/listinfo/opensim-dev
> 
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