I’m trying to write a custom JMeter module, that will run a Java method that I
use for Server Setup and returns Map<String,String> as configuration properties
that can be used in sampling.
At the moment I am slightly unsure of what TestElement I should be extending or
implementing in order to achieve this, given that it seems to sit somewhere
between a PreProcessor and ConfigTestElement, in that it is both setting up
pre-conditions for the test and then providing these as configuration
parameters.
After looking at the example in jmeter-plugins for csv config element I wrote a
class which was little more than
class CreateMyServerConfig extends Arguments {
@Override
public Map<String, String> getArgumentsAsMap() {
return ServerInstance.getServerInstance().getPropertiesAsMap();
}
}
Where getServerInstance would first generate a VM Instance and later just
provide a reference to the one created. When I tried to run a test plan with it
in the code never appeared to be executed, and I never really knew what to
expect. And whether/when this code might be called (particularly as I only
really want it run once).
I was hoping that someone might be able to tell me which path to follow,
whether I’m barking up the wrong tree and which resources might be helpful. I
have looked at https://jmeter.apache.org/extending/jmeter_tutorial.pdf, have
seen various information relating to building custom samplers, and have even
used the Java Request Sampler in the past, however this has me completely
stumped.
Alternatively a way to deal with JMeter’s configuration such that I could embed
JMeter in a jar and load the config from classpath would allow me to run the
code manually before starting JMeter from within Java.
Thanks,
Sam.
