RE: [ws-rx] discussion of issue i009

[Christopher B Ferris <chrisfer@us.ibm.com>]

Ashok,

I haven't suggested an association with a message at all. My proposal just 
augments the RMssertion
with a child element: <wsrm:DeliveryAssurance/>. The current RM Policy 
Assertion spec defines
scope of the assertion to have Endpoint Policy Subject as per WS-Policy 
Attachments. 

Cheers,

Christopher Ferris
STSM, Emerging e-business Industry Architecture
email: chrisfer@us.ibm.com
blog: http://webpages.charter.net/chrisfer/blog.html
phone: +1 508 377 9295

Ashok Malhotra <ashok.malhotra@oracle.com> wrote on 09/15/2005 08:59:52 
AM:

> Chris:
> As with issue i024, we need to determine the messages to which this new
> assertion applies.  It seems from your discussion that it applies only
> to the CreateSequenceResponse.  Does this makes sense or are there other
> usecases?
> 
> All the best, Ashok
> 
> 
> > -----Original Message-----
> > From: Christopher B Ferris [mailto:chrisfer@us.ibm.com] 
> > Sent: Wednesday, September 14, 2005 9:40 AM
> > To: ws-rx@lists.oasis-open.org
> > Subject: [ws-rx] discussion of issue i009
> > 
> > All,
> > 
> > This email is intended to start a discussion on issue i009 [1].
> > 
> > The issue has to do with providing the RMD with the capacity 
> > to advertise its DA QoS. It is somewhat related to issue 
> > i024, raised by Ashok. However, I don't believe that the 
> > resolutions need to be tied to one another.
> > 
> > Basically, there is currently no specified means of declaring 
> > the DA applied at a given RMD endpoint. It has been suggested 
> > that the RMS (or AS) might have a vested interest in knowing, 
> > a priori to establishing a Sequence with an RMD what DA would 
> > be applied. For instance, it may require that the messages be 
> > processed InOrder. If the RMD were not enforcing InOrder DA 
> > at the RMD, then the source endpoint might choose not to 
> > engage with that endpoint.
> > 
> > I would propose that one way to resolve this would be to 
> > define RM policy assertions that specify the DA.
> > e.g. a psuedo-schema for this would be as follows:
> > 
> > <wsrm:RMAssertion>
> >   <wsrm:DeliveryAssertion mode="[AtLeastOnce|AtMostOnce|ExactlyOnce]"
> > ordered="[xs:boolean]"? ... >
> >     ...
> >   </wsrm:DeliveryAssertion>?
> >   ...
> > </wsrm:RMAssertion>
> > 
> > Thus, an endpoint could declare its DA QoS in the policy 
> > statement associated with the endpoint.
> > 
> > Thoughts?
> > 
> > [1]
> > http://www.oasis-open.org/apps/org/workgroup/ws-rx/download.ph
> > p/14329/ReliableMessagingIssues.xml#i009
> > 
> > Cheers,
> > 
> > Christopher Ferris
> > STSM, Emerging e-business Industry Architecture
> > email: chrisfer@us.ibm.com
> > blog: http://webpages.charter.net/chrisfer/blog.html
> > phone: +1 508 377 9295
> > 
> > 
>