package kg.apc.jmeter.functions;

 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;

 import java.util.Collection;

 import java.util.LinkedList;

 import java.util.List;

 public class IterationNum extends AbstractFunction {

     private static final List<String> desc = new LinkedList<String>();

     private static final String KEY = "__iterationNum";

     @Override

     public synchronized String execute(SampleResult previousResult, Sampler currentSampler)

             throws InvalidVariableException {

         return String.valueOf(getVariables().getIteration());

     }

     @Override

     public synchronized void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException {

     }

     @Override

     public String getReferenceKey() {

         return KEY;

     }

     @Override

     public List<String> getArgumentDesc() {

         return desc;

     }

 }