Hi,
concerning different endpoint it is not possible to put them in one
sequence. But what is when you have calls on different web services on
one maschine. Is it possible to put them all in one sequence and how is
it done in sandesha? I tried it out but got an ERROR: MESSAGE IS NULL IN
ResponseSeqHash.
Thanks,
Benjamin
Hi,
IMHO it is not a feature that should be covered by WS-RM, it should be
a feature of the underlying SOAP engine.
For RM all these messages are different sequence if they are going to
different endpoints. So if we need to send one message to 2000 stores
then it will be a 2000 sequence and lot of additional messages. We can
use RM but there is are additional overhead involve in it. However it
the scenario is such that we need to send 2000 messages to same
recipient, then RM is for that and will serve well.
Thanks,
Jaliya
----- Original Message -----
*From:* IVO <mailto:[EMAIL PROTECTED]>
*To:* [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
*Sent:* Wednesday, November 30, 2005 3:04 AM
*Subject:* Re: Oneway ws and reliability
Hi,
Thx for the response. However i think the Spec of WS-RM had to
think about reliably talking to many WS with same message without
any interation of sequences. I tried to loop 2000 times for 2000
stores and for each store i had just to change the URL but same
message. Not a a good approach....
*/[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>/* wrote:
Hi,
Hm.. interesting scenario..Please see my comments below.
Thanks,
Jaliya
----- Original Message -----
From: IVO
To: Benjamin Schmeling ; [email protected]
Sent: Tuesday, November 29, 2005 2:50 PM
Subject: Re: Oneway ws and reliability
Hi,
i have a project that requires the use of either a message
broker or web
services.
HINT: Intend to transfer all daily sales of burger king stores to
headquarter. this implies an average of 2000 sto res connect
to headquarter
with 2hours window of transaction. also the possibility of
burger-king
headquarter to broadcast price changes to all stores. With
message brokers
this is possible like JMS or propriatory ones using publishing and
subscription.
Have made studies on WS-RM, WS-Security, WS-Conversation,
WS-Callback, and
WS-Policy and thought web services with their interop.. they
are better
than JMS and other MOM. I have had a look on Sandesha as
regards to WS-RM.
It was quite interesting. My qeuestions after reading this
mail of using
sequences in talking to three WS:
1. Having the same messages for web service A, B, and C is
there a means
to braodcast the messages without any interation in
application level but
by sim ply listing the endpoints?
Sandesha does not have a message broadcasting machanism at the
transport
level and it is not a requirement of the WS-RM specs. For this
functionality you have to use some mediation service. Apache
Synapse will
do this soon :)
2. Has Sandesha some implementations of load balance? BEA uses
Buffers.
Say 2000 stores all talk simultaneously to one WS.
Sandesha does not have a built in load balancing mechanism.
But it may be
able to handle the load as long as Servlet container and Axis
is handling
the load.
3. Has Sandesha in built tools for monitoring the flow of
information at
transport level or do i have define my handlers for that?
You can add handler to both request and response flows to
monitor the
message flow.
4. What about WS-Conversation and Callback?
Implementation of WS-SecCon is still not complete
thanks
Benjamin Schmeling wrote:
Hi,
imagine the scenario, described in the reliable messaging
specification.
Now lets assume the webservices are all oneway and the second
message
goes to a third endpoint. I know the specification suppor ts
only two
endpoints, but is there a possibility to do the following:
1.) call webservice A (at http:/abc.org)
2.) call webservice B (at http:/cde.org)
3.) call webservice C (at http:/abc.org)
I could do this with 3 separate sequences. At every end of one
sequence
endSequence() is called in Sandesha. Can I make the conclusion
that
after calling endSequence() the message to all webservices in the
sequence are already successfully delivered?
For example:
new SandeshaContext()
call webservice A (at http:/abc.org)
endSequence()
// /message to A has been delivered already at this point of
code?/
new SandeshaContext()
call webservice B (at http:/cde.org)
....
...
..
Thanks,
Benjamin
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SUMELONG IVO
UNIVERSITY OF DUISBURG-ESSN
DEPARTMENT OF COMPUTER SCIENCE AND
COMMUNICATION ENGINEERING
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