[rus-wg] RUS Specification - users

[Jon MacLaren]

On Apr 6, 2005, at 8:42 AM, Steven Newhouse wrote:

>>  In the document you identify only two classes of user as having 
>> access to
>> data stored within the RUS - I guess that you mean the ability to 
>> view and
>> modify URs. Should you also note that there are classes of user that 
>> have
>> only read access - the grid user running jobs should be able to view 
>> her
>> URs, PIs can view the URs of a project, VO manager can view the URs 
>> of jobs
>> from her VO etc (all requiring access policies etc)
>
> The OGSI version of the RUS specification had slightly richer user 
> model... but I feel the current model reflects better the operational 
> reality. How many of these users/PIs will want to be generating 
> XPath/XQuery statements to extract data from a web service? Probably 
> very few.

I believe that the motivation for changing the model was to prevent 
many users (e.g. hundreds in the case of Manchester's CSAR-wide RUS) 
slowing the RUS down with arbitrary queries.  At Manchester, a portal 
was provided - but of course, this is outside the scope of the spec.  
Doing things this was gives a mechanism to limit the sorts of queries 
users could do.  It also effectively serialises the queries, preventing 
them from swamping the RUS.

Jon.