On 3 July 2012 19:56, Eric Jain <[email protected]> wrote:
> 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?
No, but they do need to be in a package with a specific naming convention
See the classfinder.functions. definitions in jmeter.properties (and
in the jmeter.log file)
>
> 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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