My answers are interspersed below:
On Friday 08 June 2001 17:56, you wrote:
> Hi,
> I am writing this email to you directly instead of sending it to the dev
> mailing list. Hope that is ok.
Sure, I hope you don't mind that I'm sending my answers to the list. There
may be others out there that are interested.
>
> First of all, thanks for working on an excellent product that is turning
> out to be extremely useful for a number of us out there. After working with
> a number of different commercially available products I feel that this
> initiative was necessary and would be glad to contribute in any way I can.
>
> I am using JMeter to load test a number of different web based apps that we
> are working on here. There are a few enhancements that I am working on and
> it would be good to know if these
> 1) have already been implemented (and somehow I could not get to them),
> 2) are being implemented by you/ other JMeter commiters,
> 3) or these would be found useful to be included in future releases and I
> can go ahead and post them (whenever ready) to the dev list.
>
> Here are the enhancements that I am working on.
> a) RequestDataExtractor :
> Description: This class sits inside the Servlet and instantiates itself on
> the basis of a property file or Servlet parameters. It captures the request
> data and stores it as URLConfig data. We can use all the data generated by
> this class to create Test Plans and then test the Servlet.
Something I've also been planning to write. It would probably be nice to
include some such tool with JMeter - a library class that took a
ServletRequest as a parameter which output XML for test samples.
Alternatively, it would be even better to write a small proxy server that
recorded the actions from the browser side. This has been talked about, but
I dont know if anyone is working on it. I also don't know how hard it would
be to write a proxy server (I'm betting there's several out there that just
need to be found). Anyone know more?
>
> b) Saving of Timers, Listeners etc.
> Although I found reference to a number of emails stating that this works, I
> have not found any code for this, nor could I make this work. Any ideas?
The XML saving framework is something I wrote, and I suspect it's a fairly
unusual design, so I'm not surprised you had some trouble. However, I can
get Timers and Listeners saved with less than an hour's work, so I will do
that and let you know.
>
> c) Adding Log4J statements for debugging.
> I am not sure whether JMeter would benefit from it in terms of performance
> but my personal opinion is that debugging primitives make products better
> both during development and while fixing bugs. This does add an additional
> dependency (of the Log4J jar files) on JMeter.
I could go along with that. I don't mind the extra dependency since it is
open-source, and it's a minimal amount of coding to get that working (and
actually, I already have such code from another project). So, give me about
a week on that one.
>
> d) Adding parameters to Sampler. Alternatively, I am also looking into
> creating a URLSampler and URLSampleResult. The Filer could handle the URL
> results to parse the parameters sent over to the Servlet.
>
> In my particular case, we have just one Servlet for one application(and I
> assume that this would be the case in most places). This Servlet redirects
> requests to appropriate classes based on keys stored in the request. We
> want to measure the performance against each key and hence want the
> parameters of the request stored in the Filer. Would you consider this a
> feature that more users of JMeter would like to use?
The whole area of sample result data and listeners is one where JMeter needs
a lot of expansion. Anyone out there who writes themselves a new listener -
we'd appreciate it if you donated it to the JMeter project. To help with
that, I would be willing to put as much information into the SampleResult
object as people wanted. Just send me specifics about the data you want in
there. Does that answer your question?
Personally, I have an eye on making listeners that perform assertions - to
check the correctness of the responses, rather than just recording timing
info. To help, I've added the ORO jar files to JMeter, as I imagine regular
expressions will be needed for that. I've also got another use in mind for
reg exp's - dynamic input parameters.
>
> e)Based on d) above, create Filers that can generate/populate data
> corresponding to Excel spreadsheets / Custom Listeners. I am still looking
> into this.
I would need more explanation about this. Are you talking about using a csv
type file format for test scripting?
>
> I would appreciate you comments.
>
> Thanks
> Tushar Bhatia
--
Mike Stover
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