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[Bug 6441] New: Put SubscriptionManager in the [source] EPR of SubscriptionEnd

From: <bugzilla@wiggum.w3.org>
Date: Thu, 15 Jan 2009 18:55:42 +0000
To: public-ws-resource-access-notifications@w3.org
Message-ID: <bug-6441-2780@http.www.w3.org/Bugs/Public/>

http://www.w3.org/Bugs/Public/show_bug.cgi?id=6441

           Summary: Put SubscriptionManager in the [source] EPR of
                    SubscriptionEnd
           Product: WS-Resource Access
           Version: FPWD
          Platform: PC
        OS/Version: Windows 2000
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Eventing
        AssignedTo: public-ws-resource-access-notifications@w3.org
        ReportedBy: lli5@avaya.com


WS-Eventing section 3.1 specifies wse:Identifier: "In some cases, it is
convenient for all EPRs issued by a single event source to address a single Web
service and use a reference parameter to distinguish among the active
subscriptions. For convenience in this common situation, this specification
defines a global element, wse:Identifier of type xs:anyURI, that MAY be used as
a distinguishing reference parameter if desired by the event source."

Three issues may be caused by removing <wse:SubscriptionManager> in
<wse:SubscriptionEnd> per Issue
(http://www.w3.org/Bugs/Public/show_bug.cgi?id=6397):
1)       It  may force a subscriber to create its own id and correlate it with
the wse:Identifier returned by the event source. 
2)       It eliminates a common case where wse:Identifier alone can be used to
correlate SubscriptionEnd and subscriptions;
3)       It creates backward compatibility issue when implementations use
wse:Identifier in SubscribeEnd message;

Proposal:
Instead of removing <wse:SubscriptionManager> from SubscriptionEnd, move it to
the WS-Addressing [source] EPR of SubscriptionEnd message.
This 1) preserves the wse:Identifier and 2) is consistent with the modeling of
SubscriptionManager. The new message template looks like this:
<s:Envelope > 
  <s:Header >
    <wsa:From>
     <wse:SubscriptionManager>
        endpoint-reference
      </wse:SubscriptionManager>
    </wsa:From>?
    <wsa:Action>
      http://schemas.xmlsoap.org/ws/2004/08/eventing/SubscriptionEnd
    </wsa:Action> 
    
  </s:Header>
  <s:Body >
    <wse:SubscriptionEnd >
      <wse:Status>
        [
    http://schemas.xmlsoap.org/ws/2004/08/eventing/DeliveryFailure | 
    http://schemas.xmlsoap.org/ws/2004/08/eventing/SourceShuttingDown |
    http://schemas.xmlsoap.org/ws/2004/08/eventing/SourceCancelling
        ]
      </wse:Status>
      <wse:Reason xml:lang="language identifier" >xs:string</wse:Reason> ?
      
    </wse:SubscriptionEnd>
    
  </s:Body>
</s:Envelope>


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Received on Thursday, 15 January 2009 18:55:51 GMT

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