| /* |
| * 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 |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * 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 javax.script.Bindings; |
| import javax.script.ScriptContext; |
| import javax.script.ScriptEngine; |
| import javax.script.ScriptEngineManager; |
| import javax.script.SimpleScriptContext; |
| |
| 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; |
| |
| /** |
| * javaScript function implementation that executes a piece of JavaScript (not Java!) code and returns its value |
| * @since 1.9 |
| */ |
| public class JavaScript extends AbstractFunction { |
| private static final String NASHORN_ENGINE_NAME = "nashorn"; //$NON-NLS-1$ |
| |
| private static final String USE_RHINO_ENGINE_PROPERTY = "javascript.use_rhino"; //$NON-NLS-1$ |
| |
| /** |
| * Initialization On Demand Holder pattern |
| */ |
| private static class LazyHolder { |
| public static final ScriptEngineManager INSTANCE = new ScriptEngineManager(); |
| } |
| |
| private static final boolean USE_RHINO_ENGINE = |
| JMeterUtils.getPropDefault(USE_RHINO_ENGINE_PROPERTY, true) || |
| (getInstance().getEngineByName(JavaScript.NASHORN_ENGINE_NAME) == null); |
| |
| /** |
| * @return ScriptEngineManager singleton |
| */ |
| private static ScriptEngineManager getInstance() { |
| return LazyHolder.INSTANCE; |
| } |
| 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("javascript_expression"));//$NON-NLS-1$ |
| desc.add(JMeterUtils.getResString("function_name_paropt")); //$NON-NLS-1$ |
| } |
| |
| private Object[] values; |
| |
| public JavaScript() { |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public 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 = ""; |
| |
| if(USE_RHINO_ENGINE) { |
| resultStr = executeWithRhino(previousResult, currentSampler, jmctx, |
| vars, script, varName); |
| } else { |
| resultStr = executeWithNashorn(previousResult, currentSampler, jmctx, |
| vars, script, varName); |
| } |
| |
| return resultStr; |
| |
| } |
| |
| /** |
| * |
| * @param previousResult {@link SampleResult} |
| * @param currentSampler {@link Sampler} |
| * @param jmctx {@link JMeterContext} |
| * @param vars {@link JMeterVariables} |
| * @param script Javascript code |
| * @param varName variable name |
| * @return result as String |
| * @throws InvalidVariableException |
| */ |
| private String executeWithNashorn(SampleResult previousResult, |
| Sampler currentSampler, JMeterContext jmctx, JMeterVariables vars, |
| String script, String varName) |
| throws InvalidVariableException { |
| String resultStr = null; |
| try { |
| ScriptContext newContext = new SimpleScriptContext(); |
| ScriptEngine engine = getInstance().getEngineByName(JavaScript.NASHORN_ENGINE_NAME); |
| Bindings bindings = engine.createBindings(); |
| |
| // Set up some objects for the script to play with |
| bindings.put("log", log); //$NON-NLS-1$ |
| bindings.put("ctx", jmctx); //$NON-NLS-1$ |
| bindings.put("vars", vars); //$NON-NLS-1$ |
| bindings.put("props", JMeterUtils.getJMeterProperties()); //$NON-NLS-1$ |
| |
| bindings.put("threadName", Thread.currentThread().getName()); //$NON-NLS-1$ |
| bindings.put("sampler", currentSampler); //$NON-NLS-1$ |
| bindings.put("sampleResult", previousResult); //$NON-NLS-1$ |
| newContext.setBindings(bindings, ScriptContext.ENGINE_SCOPE); |
| Object result = engine.eval(script, newContext); |
| resultStr = result.toString(); |
| if (varName != null && vars != null) {// vars can be null if run from TestPlan |
| vars.put(varName, resultStr); |
| } |
| } catch (Exception e) { |
| log.error("Error processing Javascript: [" + script + "]\n", e); |
| throw new InvalidVariableException("Error processing Javascript: [" + script + "]", e); |
| } |
| return resultStr; |
| } |
| |
| /** |
| * @param previousResult {@link SampleResult} |
| * @param currentSampler {@link Sampler} |
| * @param jmctx {@link JMeterContext} |
| * @param vars {@link JMeterVariables} |
| * @param script Javascript code |
| * @param varName variable name |
| * @return result as String |
| * @throws InvalidVariableException |
| */ |
| private String executeWithRhino(SampleResult previousResult, |
| Sampler currentSampler, JMeterContext jmctx, JMeterVariables vars, |
| String script, String varName) |
| throws InvalidVariableException { |
| Context cx = Context.enter(); |
| String resultStr = null; |
| 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: [" + script + "]\n", e); |
| throw new InvalidVariableException("Error processing Javascript: [" + script + "]", e); |
| } finally { |
| Context.exit(); |
| } |
| return resultStr; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException { |
| checkParameterCount(parameters, 1, 2); |
| values = parameters.toArray(); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String getReferenceKey() { |
| return KEY; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public List<String> getArgumentDesc() { |
| return desc; |
| } |
| |
| } |