| /* |
| * 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 java.util.Map; |
| |
| import org.apache.commons.jexl.JexlContext; |
| import org.apache.commons.jexl.JexlHelper; |
| import org.apache.commons.jexl.Script; |
| import org.apache.commons.jexl.ScriptFactory; |
| 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; |
| |
| /** |
| * A function which understands Commons JEXL |
| * @since 2.2 |
| */ |
| // For unit tests, see TestJexlFunction |
| public class JexlFunction extends AbstractFunction { |
| |
| private static final Logger log = LoggingManager.getLoggerForClass(); |
| |
| private static final String KEY = "__jexl"; //$NON-NLS-1$ |
| |
| private static final List<String> desc = new LinkedList<>(); |
| |
| static |
| { |
| desc.add(JMeterUtils.getResString("jexl_expression")); //$NON-NLS-1$ |
| desc.add(JMeterUtils.getResString("function_name_paropt"));// $NON-NLS1$ |
| } |
| |
| private Object[] values; |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String execute(SampleResult previousResult, Sampler currentSampler) |
| throws InvalidVariableException |
| { |
| String str = ""; //$NON-NLS-1$ |
| |
| CompoundVariable var = (CompoundVariable) values[0]; |
| String exp = var.execute(); |
| |
| String varName = ""; //$NON-NLS-1$ |
| if (values.length > 1) { |
| varName = ((CompoundVariable) values[1]).execute().trim(); |
| } |
| |
| JMeterContext jmctx = JMeterContextService.getContext(); |
| JMeterVariables vars = jmctx.getVariables(); |
| |
| try |
| { |
| Script script = ScriptFactory.createScript(exp); |
| JexlContext jc = JexlHelper.createContext(); |
| @SuppressWarnings("unchecked") |
| final Map<String, Object> jexlVars = jc.getVars(); |
| jexlVars.put("log", log); //$NON-NLS-1$ |
| jexlVars.put("ctx", jmctx); //$NON-NLS-1$ |
| jexlVars.put("vars", vars); //$NON-NLS-1$ |
| jexlVars.put("props", JMeterUtils.getJMeterProperties()); //$NON-NLS-1$ |
| // Previously mis-spelt as theadName |
| jexlVars.put("threadName", Thread.currentThread().getName()); //$NON-NLS-1$ |
| jexlVars.put("sampler", currentSampler); //$NON-NLS-1$ (may be null) |
| jexlVars.put("sampleResult", previousResult); //$NON-NLS-1$ (may be null) |
| jexlVars.put("OUT", System.out);//$NON-NLS-1$ |
| |
| // Now evaluate the script, getting the result |
| Object o = script.execute(jc); |
| if (o != null) |
| { |
| str = o.toString(); |
| } |
| if (vars != null && varName.length() > 0) {// vars will be null on TestPlan |
| vars.put(varName, str); |
| } |
| } catch (Exception e) |
| { |
| log.error("An error occurred while evaluating the expression \"" |
| + exp + "\"\n",e); |
| } |
| return str; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public List<String> getArgumentDesc() |
| { |
| return desc; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String getReferenceKey() |
| { |
| return KEY; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void setParameters(Collection<CompoundVariable> parameters) |
| throws InvalidVariableException |
| { |
| checkParameterCount(parameters, 1, 2); |
| values = parameters.toArray(); |
| } |
| |
| } |