[ogsa-bes-wg] Updated BES Document

[Ian Foster]

Dear All:

I'm very sorry about the slow delivery of the updated BES spec. I thought 
that I'd be able to send it after my flight out to Vancouver prior to my 
vacation, but failed to get email connectivity.

In any case, I enclose a new document with many changes. If you send 
comments before Sunday morning, I can try to address them on the flight 
back Sunday afternoon.

I've tried to document some of the primary changes below. However, I really 
think it is important for people to read the document carefully, as there 
may well be other things that seemed unimportant to me but are in fact 
problematic. We should then discuss issues that seem problematic on a telecon.

1) Things that have changed:

a) I've broken existing operations out into separate BES-Factory and 
BES-Management port-types, and added a new BES-Activity port-type.

b) I've removed the material on separate WSRF and RMF renderings, and the 
material on notification, based on the assumption that we can do what David 
Snelling proposes and define BES in such a way that other desired behaviors 
(e.g. WSRF-specific or WS-Transfer-specific operations) can be added 
if/when desired via composition. To this end, I've also introduced the 
WS-BaseFaults faults. I realize that these changes haven't been approved, 
so we may need to back them out. But at least this way you can see what it 
looks like.

c) I removed the "laststate" component from the "ActivityStatus" type, 
because this component seemed to be there specifically to deal with 
suspended activities, which are not longer part of the core specification. 
Presumably a BES that supports an extended state model with suspension will 
need to introduce "laststate" as an extension to the ActivityStatus type.

2) Things that seem problematic, or that are not done:

a) We need a new state model section: I think someone is writing one? (I 
removed what is there.)

b) I can't recall the new base states; these need to be entered.

c) We need to update the BES-Factory attributes.

d) I assume there should be per-activity BES-Activity attributes. I haven't 
entered any.

e) I've introduced "subscription" and "lifetime management" elements as 
optional JSDL extensions. Certainly people that compose 
WS-Notification/WS-Eventing and WS-ResourceLifetime, respectively, with BES 
will want to use these. However, it may be that it is not appropriate to 
mention them in the BES spec, because they are specific to other 
WSRF/WS-Transfer specs. (I myself think that they should not be there, but 
I want to raise the topic to get other people's views.)

f) The normative stuff in the appendices hasn't been completed.

Regards -- Ian.
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