Re: Oneway ws and reliability

[Jaliya Ekanayake]

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 To: [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] wrote: Hi, Hm.. interesting scenario..Please see my comments below. Thanks, Jaliya ----- Original Message ----- From: IVO To: Benjamin Schmeling ; sandesha-dev@ws.apache.org 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 <[EMAIL PROTECTED]>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 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] -------------------------------------------------------------------------------- Yahoo! Music Unlimited - Access over 1 million songs. Try it free. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] SUMELONG IVO UNIVERSITY OF DUISBURG-ESSN DEPARTMENT OF COMPUTER SCIENCE AND COMMUNICATION ENGINEERING SCHEMKESWEG 41 47057 DUISBURG Germany HOME.: 00492033948762 MOBILE.00491797751042 EMAIL.: [EMAIL PROTECTED] Yahoo! Music Unlimited - Access over 1 million songs. Try it free.