Hi!
I agree with your proposal, but have a
couple of editorial nits:
You say, “After line 396, add a new
section ….” I believe you mean line 596.
You say “The following exemplar
defines the CloseSequence syntax:” Exemplars don’t define. How
about “The following defines the CloseSequence syntax:” ?
(Just making the editors’ job easier….)
Regards,
--Becky
From: Doug Davis
[mailto:dug@us.ibm.com]
Sent: Thursday, September 08, 2005
2:02 PM
To: ws-rx@lists.oasis-open.org
Subject: [ws-rx] i019/i028 - final
proposal
Based
on Jacques comments I've modified the text to avoid using terms that are not
defined in the glossary. I'm concerned that there are too many version of
this proposal out there. All of the suggestions people have made have
been great and I do really think they've helped mold this into a better
proposal. However, when comparing this version with the original one I
think the basic idea is still the same. And for the purposes of the TC
voting on this, while a totally complete proposal certainly helps, I don't
think it needs to be bullet-proof in order for people to vote one way or the
other. Leaving some of the minor textual changes for the editors allows
them to do something too :-)
So, barring some
major change request from someone I'd like this to be the version we vote on.
thanks
-Doug
ps just got
Jacques' note about possibly updating the term 'received' in the glossary but
I'd prefer to leave that for the editors as well. With 2 hrs left before
the call I need to send something :-)
- - - - - - - -
Using the pdf
file at
http://www.oasis-open.org/apps/org/workgroup/ws-rx/download.php/13493/WS-ReliableMessaging-v1.0-wd-01.pdf
here's the proposal:
Change lines 340-347, the SeqAck syntax, to:
<wsrm:SequenceAcknowledgement ...>
<wsrm:Identifier ...> xs:anyURI </wsrm:Identifier>
[ [<wsrm:AcknowledgementRange ...
Upper="xs:unsignedLong"
Lower="xs:unsignedLong"/> +
<wsrm:Final/> ? ]
| <wsrm:Nack> xs:unsignedLong </wsrm:Nack> + ]
...
</wsrm:SequenceAcknowledgement>
After line 378, add to the description of the SeqAck elements:
/wsrm:SequenceAcknowledgement/wsrm:Final
This optional element, if present, indicates that the RM
Destination is not receiving new messages for the
specified Sequence. The RM Source can be assured that
the ranges of messages acknowledged by this
SequenceAcknowledgement header block will not change in the
future. This element MUST be present when the Sequence
is no longer receiving new message for the specified sequence.
Note: this element MUST NOT be used when sending a Nack, it
can only be used when sending AcknowledgementRanges.
On lines 569 and 570 change:
After an RM Source receives the <SequenceAcknowledgement>
acknowledging the complete range of messages in a Sequence, it
sends a ...
to
When the RM Source has completed its use of the Sequence, it
sends a ...
To the end of that para, at the end of line 574, add:
Note, under normal usage the RM source will complete its use of
the sequence when all of the messages in the Sequence have been
acknowledged. However, the RM Source is free to Terminate
or Close a Sequence at any time regardless of the acknowledgement
state of the messages.
Change lines 581 and 582 from:
This element is sent by an RM Source after it has received the
final <SequenceAcknowledgement> covering the full range of a
Sequence.
to
This element is sent by an RM Source to indicate it has completed
its use of the Sequence, i.e. it will not attempt to send any
additional messages to the RM Destination referencing this sequence.
After line 396, add a new section about closing a Sequence:
3.6 Closing A Sequence
There may be times during the use of an RM Sequence that the RM
Source or RM Destination will wish to discontinue using a Sequence
even if some of the messages have not been successfully delivered
to the RM Destination.
In the case where the RM Source wishes to discontinue use of a
sequence, while it can send a TerminateSequence to the RM Destination,
since this is a one-way message and due to the possibility of late
arriving (or lost) messages and Acknowledgements, this would leave
the RM Source unsure of the final ranges of messages that were
successfully delivered to the RM Destination.
To alleviate this, the RM Source can send a <wsrm:CloseSequence>
element,
in the body of a message, to the RM Destination to indicate that
RM Destination MUST NOT receive any new messages for the
specified sequence, other than those already received at the time
the <wsrm:CloseSequence> element is interpreted by the RMD. Upon
receipt
of this message the RM Destination MUST send a SequenceAcknowledgement
to the RM Source. Note, this SequenceAcknowledgement MUST include
the
<wsrm:Final> element.
While the RM Destination MUST NOT receive any new messages for the
specified
sequence it MUST still process RM protocol messages.
For
example, it MUST respond to AckRequested, TerminateSequence
as well
as CloseSequence messages. Note, subsequent CloseSequence messages
have no
effect on the state of the sequence.
In the case where the RM Destination wishes to discontinue use of a
sequence it may 'close' the sequence itself. Please see wsrm:Final
above and the Sequence Closed fault below. Note the SequenceClosed
Fault SHOULD be used in place of the SequenceTerminated Fault,
whenever possible, to allow the RM Source to still receive
Acknowledgements.
The following exemplar defines the CloseSequence syntax:
<wsrm:CloseSequence wsrm:Identifier="xs:anyURI"/>
/wsrm:CloseSequence
This element is sent by an RM Source to indicate that the RM
Destination MUST NOT receive any new messages for this sequence.
A SequenceClosed fault MUST be generated by the RM Destination
when it
receives a message for a sequence that is closed.
/wsrm:CloseSequence@Identifier
This required attribute contains an absolute URI conformant
with RFC2396 that uniquely identifies the sequence.
/wsrm:CloseSequence/{any}
This is an extensibility mechanism to allow different (extensible)
types of information, based on a schema, to be passed.
/wsrm:CloseSequence@{any}
This is an extensibility mechanism to allow additional attributes,
based on schemas, to be added to the element.
A <wsrm:CloseSequenceResponse> is sent in the body of a response
message by
an RM Destination in response to receipt of a <wsrm:CloseSequence>
request
message. It indicates that the RM Destination has closed the
sequence.
The following exemplar defines the <wsrm:CloseSequenceResponse>
syntax:
/wsrm:CloseSequenceResponse
The element is sent in the body of a response message by
an RM Destination in response to receipt of a <wsrm:CloseSequence>
request
message. It indicates that the RM Destination has closed the
sequence.
/wsrm:CloseSequenceResponse/{any}
This is an extensibility mechanism to allow different (extensible)
types of information, based on a schema, to be passed.
/wsrm:CloseSequenceResponse@{any}
This is an extensibility mechanism to allow additional attributes,
based on schemas, to be added to the element.
On lines 735 and 746 make these faults non-terminating by removing:
It is an unrecoverable error and terminates the Sequence.
After line 760, add a new fault:
4.8 Sequence Closed
This fault is sent by an RM Destination to indicate that the
specified sequence has been closed. This fault MUST be generated
when an
RM Destination is asked to receive a message for a sequence
that is
closed.
Properties:
[Code] Sender
[Subcode] wsrm:SequenceClosed
[Reason] The sequence is closed and can not receive new messages.
[Detail] <wsrm:Identifier...> xs:anyURI </wsrm:Identifier>
Add the proper XML to the schema and WSDL....