[AG-TECH] AccessGrid 3: What information is available

Ivan R.Judson judson at mcs.anl.gov
Tue May 24 09:44:45 CDT 2005

This is incredibly good email. I'll be pondering it and thinking about  
my own needs vs what GT4 provides . I entirely agree  with the notion  
of standards based; if we can identify the critical components that  
need standardization we can move ahead.

This is great, really, I'm happy with it.


On May 24, 2005, at 8:38 AM, John Hodrien wrote:

> On Tue, 24 May 2005, Ivan R.Judson wrote:
>> Hey John,
>> Good point. Although my skepticism keeps nagging with the worry, "Why  
>> bother
>> with WSRF/GT4 services, aren't Web Services good enough?"  I suspect  
>> they
>> are, I haven't seen any significant value to the layers above that  
>> provided
>> by GT4.
> If you try and ignore the globus stuff, and think of it as WSRF it  
> becomes
> more pleasant.  GT4 contains lots of crap for submitting jobs and  
> managing
> resources, copying files about etc.  I have no immediate interest in  
> any of
> that.  WSRF is the OASIS working draft for stateful web services, and  
> as such
> is intended to be something nice and generic, usable whenever you want  
> state
> in a web service.
> The most important part of it as I'm concerned (if you were  
> entertaining the
> notion of AG with web services) would be WS-Resource and  
> WS-Notifications.
> http://docs.oasis-open.org/wsrf/2005/03/wsrf-WS-Resource-1.2-draft 
> -03.pdf
> http://docs.oasis-open.org/wsn/2004/06/wsn-WS-BaseNotification-1.2- 
> draft-03.pdf
> Sadly you can quickly complicate things, as you're likely to need
> WS-Reliability if you're going down the notifications road.
> http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=wsrm
> I'm not sure what else would be worth poking at, bits like  
> WS-ResourceLifetime
> might also deserve a look in.
> Equally, playing with WS-Security and using the SAML callout would let  
> you
> define whatever you wanted on the security front, and make it open and
> standardised how you were doing it.
> These are all boxes of tricks that live independently of GT4 (WSRF.NET  
> for
> example) but would open up the AG to open and standard interaction  
> with other
> software.
> So really my case for this isn't in favour of GT4, it's in favour of
> standardised (very nearly at least ;) stateful web services.
>> Did I miss something :-)?
> I'm sure we've all missed plenty ;)
> jh
> -- 
> "The thing I love most about deadlines is the wonderful WHOOSHing  
> sound they
>  make as they go past."                              -- Douglas Adams.

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