I created a function like the one below, and put the class file into a
new jar file in JMeter's lib/ext. But when I use ${__Json()} (e.g. for
the POST body of an HTTP request sampler), I always end up with
'${__Json()}' instead of '{"x":42}'. Built-in functions such as
${__Random(1,10)} work fine. Do I need to register custom functions
somewhere?
package testing;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.apache.jmeter.engine.util.CompoundVariable;
import org.apache.jmeter.functions.AbstractFunction;
import org.apache.jmeter.functions.InvalidVariableException;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.samplers.Sampler;
public class RandomEventFunction extends AbstractFunction {
private static final String KEY = "__Json";
@Override
public List<String> getArgumentDesc() {
return Collections.emptyList();
}
@Override
public String execute(SampleResult previouResult, Sampler sampler) {
return "{\"x\":42}";
}
@Override
public String getReferenceKey() {
return KEY;
}
@Override
public void setParameters(Collection<CompoundVariable> variable) {
}
}
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