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From "_ext van Leeuwen, Paul" <>
Subject RE: embedding JMeter / calling JMeter from other Java code
Date Mon, 25 Jul 2011 12:05:55 GMT
Apparently I am not the only person who sees the benefit of a more programmatic interface:
I found that some other guy from some other company already created a feature request some
time ago:

I guess now I can only wait. If you read this thread and also want a more programmer-friendly
JMeter API, then please consider leaving a comment on the issue above to make yourself heard.

With regards to the suggestions made on this email-thread:

@apc : it seems to me that your logic is from the point of view of JMeter. I am looking at
other frameworks: like when running a large regression test set on the machine of every developer
and some continues integration server (like Hudson). Some of these tests might use JMeter
while others do not. In such case you just want to be able to add JMeter as a dependency on
your project (having e.g. maven managing the details) and do something like:
JMeter jmeter = new JMeter();
TestResult result =;
Another example is when defining a broader set of automated tests in FitNesse. Trying to write
fixtures that call JMeter is currently quite a pain.

@brian : you seem to understand what I mean and what I am trying to do. Indeed there are solutions
existing to call JMeter in a programmatic way: the ant plugin you refer to assumes JMeter
to be installed in a specific location. There is also a maven plugin that has a lot of boilerplate
code to initialize JMeter. Both are a bit hacky and unstable on the long term: with newer
versions they may break. That is exactly why I would hope that JMeter has a native API for
its core (which could then be worked on from the GUI or from other Java code. I am not sure
whether the JMeter developers would consider such.

@deepak : sure I could decompile the JMeter plugin I was referring to and move to a JMeter
alternative that is more programmers friendly (like HttpUnit), but how would JMeter benefit
from that? Also I still find JMeter the best tool for our needs: from time to time we will
have to record new test actions and the JMeter GUI is quite helpful there. Also JMeter is
a tool that is already known to the less-technical people in the department, so I'd rather
not switch. For a response to the second half of your message: please see my response to apc

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