Hi Asankha,
Thanks a lot for the answers.
As I told in my previous email, the current web app is already in
production. So I want to modify it as less as possible...
For caching and load balancing, I an using Websphere mechanism wich match
our needs right now. I know I would used about 0.01% of synapse
possibilities if I'm using it as an axis2 module but I just need to
perform proxying for one WS... The others embedded in my web app don't
have to change.
I'll perhaps set up "complete" synapse solution to get trained though.
I am not sure, i've been clear on what I want to do, so I will describe
the scenario:
- The client sends a request to my web app. This request contains in the
SOAP Header information on the client and the user of the client. The SOAP
Body contains the business information for the WS
- My web app (which extends Axis2 servlet) receives the request, parses
the SOAP Header to extract information, set in the context if SSL is used
and let Axis2 forwards the request through the module.
- Synapse module would treat the request and if it is a request for the
new WS; check coherency (message validation using validate mediator) and
add some information ('is SSL used' for example) in a new tag of the
SOAP-BODY before sending it to a .Net WS hosted on a iis server.
- The .Net WS treats the request, sends it back to Synapse which sends it
back to the client withou doing anything.
I have tested some samples, I get what synapse can do... but not for
altering the message (by adding SOAP-BODY tags)...
Synapse seems to be a really good product.
Thanks in advance for your answers
Pierre
"Asankha C. Perera" <[EMAIL PROTECTED]>
01/08/2008 16:42
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Re: [Synapse 1.2] Proxying a WS
Hi Pierre
> After some readings, here is what I understand:
> - I need to add synapse.mar axis module
> - I engage the module globally
> - I configure the proxy functions of synapse in the xml configuration
file
>
Well.. an ESB could do do a lot more than just front end Axis2 WS
sitting on the same Axis2 runtime.. so I would suggest you deploy
Synapse standalone. This would be easier for you to start up and get
going as well, and would allow you to do much more than just forwarding,
such as throttling, caching, load balancing, transport switching, etc..
and much more.
> The problem is that I want to do a bit more than simply redirecting the
> client request: I want to check coherency of the data and add
information
> in the SOAP-BODY.
> How can I do that? Do I have to implement a Mediator?
No, you can use the validate mediator and validate your message, or a
fragment of it against a schema. See
http://synapse.apache.org/Synapse_Configuration_Language.html#validate
http://synapse.apache.org/Synapse_Samples.html#Sample7
> As you can see, i'm a bit confused...
>
Hope the above helps.. you can first try the samples to understand how
Synapse can help you.. feel free to ask more questions
asankha
--
Asankha C. Perera
WSO2 - http://wso2.org
http://esbmagic.blogspot.com
