[Pgi-wg] [gin] Reminder & Agenda: PGI Telcon Today 2010-03-11; 3:30 pm CET

[Mark Morgan]

Also, it isn't a matter of whether or not the "should" be opaque.   
They are.  The spec. says they are and that is then end of the story.   
The only fields which are allowed to be "interpreted" by the client or  
anyone but the "menting" service are the Address field (which is a  
URI), and the Metadata section.  The first of these is used to target  
future web service requests, the latter is optional "hints" that  
clients may choose to use or ignore.  Further, you can write a spec.  
profiling what the meaning of various fields in the EPR are, but you  
are not allowed to constrain what service mentors choose to put into  
the other fields.  For those of you who program in C or C++, telling  
someone how they are allowed to create their EPRs is like telling them  
that only prime numbers are allowed as pointers -- it doesn't make any  
sense.

-Mark

On Mar 11, 2010, at 9:06 AM, Andrew Grimshaw wrote:

> All,
> I cannot make the call, I have another meeting. However, if one is  
> using web
> services, then EPRs are the way to go, unambiguously. It is  
> important to
> keep in mind that they are not intended for human consumption! They  
> are XML
> data structures that can potentially carry quite a bit of  
> information beyond
> the address:to field useful both to clients (metadata) and service
> implementations about context (reference parameters).
>
> That information can include a unique ID as was being discussed in  
> the email
> thread, security information such as public keys, or policy  
> information, or
> even information on how to rebind the service if the service appears  
> dead.
>
> A
>
> -----Original Message-----
> From: pgi-wg-bounces at ogf.org [mailto:pgi-wg-bounces at ogf.org] On  
> Behalf Of
> Morris Riedel
> Sent: Thursday, March 11, 2010 7:09 AM
> To: Pgi-wg at ogf.org
> Subject: Re: [Pgi-wg] [gin] Reminder & Agenda: PGI Telcon Today  
> 2010-03-11;
> 3:30 pm CET
>
> Hi team,
>
>  gLite, GENESIS and UNICORE agree on using EPRs and for today we  
> agreed
> that members of ARC (i.e. Balazs, Aleksander) fill in some drawbacks  
> of EPRs
> in the WIKI.
>
> Currently I don't see any point against EPRs in the wiki:
> http://forge.gridforum.org/sf/wiki/do/viewPage/projects.pgi-wg/wiki/Executio
> nServicePoints
>
> Please do so before the Telcon - otherwise we can say YES to EPRs  
> because
> the majority votes for it, has experience with it, and we have no  
> counter
> statements.
>
> We need to make progress - so an agreement on EPRs here is a good step
> forward and would be a good outcome of the call today.
>
> Take care,
> Morris
>
>
>
>> -- -----Ursprüngliche Nachricht-----
>> -- Von: gin-bounces at ogf.org [mailto:gin-bounces at ogf.org] Im Auftrag  
>> von
> Morris
>> -- Riedel
>> -- Gesendet: Donnerstag, 11. März 2010 13:03
>> -- An: Pgi-wg at ogf.org
>> -- Cc: gin at ogf.org
>> -- Betreff: [gin] Reminder & Agenda: PGI Telcon Today 2010-03-11;  
>> 3:30 
>> pm
> CET
>> --
>> -- Hi folks,
>> -- 
>> --   today will be a PGI telcon as planned.
>> --
>> -- (1)
>> -- Numbers:
>> --
>> -- we are using:
>> -- via Skype call +9900827049931906 (free of charge), ordinary phone
> numbers
>> -- (local rates) with the 9931906 conference number:
>> --
>> -- Austria 0820 401 15470
>> -- Belgium 0703 57 134
>> -- France 0826 109 071
>> -- Germany +49 (0) 180 500 9527
>> -- Switzerland 0848 560 397
>> --
>> --
>> --
>> -- (2)
>> -- Screen-Sharing:
>> --
>> -- http://webconf.vc.dfn.de/ogf-pgi-wg/
>> --
>> -- No login is required. Just enter as 'guest' with your real world  
>> name.
>> --
>> --
>> --
>> -- (3)
>> -- Proposed agenda:
>> --
>> -- (a)
>> -- Review Minutes last week
>> --
>> -- (b)
>> -- Review action items
>> --
>> -- (c)
>> -- Continue EPR discussions and agree on addressing approach
>> --
>> -- (d)
>> -- AOB
>> --
>> --
>> -- High participation is appreciated
>> --
>> --
>> -- Your co-chair,
>> -- Morris
>> --
>> -- ------------------------------------------------------------
>> -- Morris Riedel
>> -- Distributed Systems and Grid Computing Division
>> --
>> -- Jülich Supercomputing Centre (JSC)
>> -- Info: http://www.fz-juelich.de/jsc/JSCPeople/riedel
>> --
>> --
>
>
>
> _______________________________________________
> Pgi-wg mailing list
> Pgi-wg at ogf.org
> http://www.ogf.org/mailman/listinfo/pgi-wg

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