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JMeter example source code file (

This example JMeter source code file ( is included in the "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - JMeter tags/keywords

abstractfunction, compoundvariable, invalidvariableexception, invalidvariableexception, javascript, javascript, key, list, non-nls-1, non-nls-1, object, override, string, string, util

The JMeter source code

 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

package org.apache.jmeter.functions;

import java.util.Collection;
import java.util.LinkedList;
import java.util.List;

import org.apache.jmeter.engine.util.CompoundVariable;
import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.samplers.Sampler;
import org.apache.jmeter.threads.JMeterContext;
import org.apache.jmeter.threads.JMeterContextService;
import org.apache.jmeter.threads.JMeterVariables;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.log.Logger;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.RhinoException;
import org.mozilla.javascript.Scriptable;

public class JavaScript extends AbstractFunction {

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

    private static final String KEY = "__javaScript"; //$NON-NLS-1$

    private static final Logger log = LoggingManager.getLoggerForClass();

    static {
        desc.add(JMeterUtils.getResString("function_name_paropt")); //$NON-NLS-1$

    private Object[] values;

    public JavaScript() {

    /** {@inheritDoc} */
    public synchronized String execute(SampleResult previousResult, Sampler currentSampler)
            throws InvalidVariableException {

        JMeterContext jmctx = JMeterContextService.getContext();
        JMeterVariables vars = jmctx.getVariables();

        String script = ((CompoundVariable) values[0]).execute();
        // Allow variable to be omitted
        String varName = values.length < 2 ? null : ((CompoundVariable) values[1]).execute().trim();
        String resultStr = "";

        Context cx = Context.enter();
        try {

            Scriptable scope = cx.initStandardObjects(null);

            // Set up some objects for the script to play with
            scope.put("log", scope, log); //$NON-NLS-1$
            scope.put("ctx", scope, jmctx); //$NON-NLS-1$
            scope.put("vars", scope, vars); //$NON-NLS-1$
            scope.put("props", scope, JMeterUtils.getJMeterProperties()); //$NON-NLS-1$
            // Previously mis-spelt as theadName
            scope.put("threadName", scope, Thread.currentThread().getName()); //$NON-NLS-1$
            scope.put("sampler", scope, currentSampler); //$NON-NLS-1$
            scope.put("sampleResult", scope, previousResult); //$NON-NLS-1$

            Object result = cx.evaluateString(scope, script, "<cmd>", 1, null); //$NON-NLS-1$

            resultStr = Context.toString(result);
            if (varName != null && vars != null) {// vars can be null if run from TestPlan
                vars.put(varName, resultStr);

        } catch (RhinoException e) {
            log.error("Error processing Javascript", e);
            throw new InvalidVariableException();
        } finally {

        return resultStr;


    /** {@inheritDoc} */
    public synchronized void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException {
        checkParameterCount(parameters, 1, 2);
        values = parameters.toArray();

    /** {@inheritDoc} */
    public String getReferenceKey() {
        return KEY;

    /** {@inheritDoc} */
    public List<String> getArgumentDesc() {
        return desc;


Other JMeter examples (source code examples)

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