sebb a écrit :

On 01/05/2009, Jean-Louis.Pasturel <[email protected]> wrote:
sebb a écrit :


On 01/05/2009, Jean-Louis.Pasturel
<[email protected]> wrote:
Hi All,
I am a begginner with JMeter and this is my first post to this mailing
list, and  sorry for perhaps faq questions. If it is, let me know.
Is it possible to do static initialisation in a Java Request Sample that
uses the parameters set in  the panel of the the Java Request Sample ?
Or is
there a better way with other feature of JMeter ( Pre-processor ?)?


I'm not sure what you are trying to do.

The Java Request Sampler is a very basic sampler that allows one to
generate a simple sample response; not sure what static initialisation
has to do with that.

Please explain in a bit more detail what you are trying to achieve,
and then maybe someone can provide suggestions as to how it might be
done.



Regards
JL Pasturel



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Sorry,  i agree that I was not very  clear.
Exactly i don't know how JMeter and Java  Request Sample instanciates
threads.

The StandardJMeterEngine creates threads; each Sampler instance runs
in a single thread.

So i wondering if to use static variables ( not final)  has a sense
in a Java  Request Sample.

No.

My goal, is to share objects ( with sometimes monitored accesses )  between
threads ( for example :  a datapool, read by all the threads, counters,
getting a local port not used by others threads ...).

But what are you trying to achieve?

Hope  i am more clear ...

Sorry, not really.

Regards
JL Pasturel



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Sebb, thanks for the answer about static parameters.
What i did, is a java sampler for a non-supported protocol by JMeter ( Radius ) with an open source library : Tiny Radius. This protocol is use in Telco to permit authentification of internet home boxes ( Internet, TV, VOIP ...). I have to handle a datapool of 10 000 000 lines and to pick rows randomly. So each thread has it own file descriptor ( RandomAccessFile instance). My Java Sampler runs fine and i can use other features of JMeter ( Listener, trees...). The goal of my initial question was about the best practices to handle, for example, my shared datapool with a random access with JMeter.

Other feature I look for, is IP Spoofing. I have begun to write a TCP proxy "out of the box" that handles IP Spoofing. For now, I have to solve, in the best way, the problem of the affinity of the session in a transaction or in a conversation ( tracking for example cookies). Certainly by using regexp. Have you advices about it ?

Regards
JL Pasturel


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