perfsonar development work

[Maciej Glowiak <>]

Nicolas Simar wrote:
> Hi,
>
> based on Verena's input, I am developing some developers FAQs. Could you 
> please help me filling the gaps. If you get the answer of a single 
> question, I would be quite happy with it. Thanks a lot in advance.
>
> Q: Is there an explanation of the SVN tree, what classes can be found 
> where? Which java classes should I examine first, to get a good start?

I don't know anything about the existing explanation. As far as I 
remember we discussed we should have such description (how to start with 
new service).

There are several interfaces to be implemented for new service. Two of 
them are the most important: MessageHandler and ServiceEngine. Also NMWG 
classes should be investigated as they are common data exchange objects 
between core classes.

> Q: How, in short words, is an MP/MA intended to operate?
>
> Q: Where can I find actual XML schemata?

I think the most actual schemata are on SVN. "perfsonar/schema" directory.

> Q: Is there a schema tester, where I can test my own schemata for 
> compatibility?
>
> Q:  Which client(s) can cooperate with which server implementations?

We have SOAPClient class that can be used for sending requests to our 
services. SOAP client is a standalone client.
For developers also AxisClient from perfSONAR package will be useful. It 
implements the most common way of sending requests.

> Q: How is SOAP used? (doc/literal vs. rpc/encoded)

doc/literal only.

> Q: Is there a list of features, already implemented/still missing?

Not in one place. See last presentations from Montpellier - all 
developers presented quick update of the service.

> Q: I wish to add a LS registration feature to my service. Is there some 
> classes already existing that I can re-use?

Yes. We have special classes for simple registration. Data are taken 
from XML information file and service.properties.
There is generic Auxiliary Component for registration called
org.perfsonar.service.commons.registration.LSRegistrationComponent.java


Some info is on:
 http://wiki.perfsonar.net/jra1-wiki/index.php/Client_API_LSRegistration
but after Guilherme's changes may be not fully up to date.

Maciej

--

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| Maciej Glowiak        Network Research and Development            ||
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     Poznan Supercomputing and Networking Center ||
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