| /* |
| * 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.ArrayList; |
| import java.util.Collection; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.concurrent.ThreadLocalRandom; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.jmeter.engine.util.CompoundVariable; |
| import org.apache.jmeter.samplers.SampleResult; |
| import org.apache.jmeter.samplers.Sampler; |
| import org.apache.jmeter.threads.JMeterVariables; |
| import org.apache.jmeter.util.JMeterUtils; |
| import org.apache.jorphan.logging.LoggingManager; |
| import org.apache.log.Logger; |
| |
| /** |
| * Provides a RandomFromMultiResult function which returns a random element from a multi valued extracted variable. |
| * Those kind of variable are extracted by: |
| * - Regular Expression extractor |
| * - JSON PATH extractor |
| * - CSS/JQuery extractor |
| * - XPath Extractor |
| * |
| * @since 3.1 |
| */ |
| public class RandomFromMultipleVars extends AbstractFunction { |
| private static final Logger log = LoggingManager.getLoggerForClass(); |
| |
| private static final List<String> desc = new LinkedList<>(); |
| private static final String KEY = "__RandomFromMultipleVars"; //$NON-NLS-1$ |
| private static final String SEPARATOR = "\\|"; //$NON-NLS-1$ |
| static { |
| desc.add(JMeterUtils.getResString("random_multi_result_source_variable")); //$NON-NLS-1$ |
| desc.add(JMeterUtils.getResString("random_multi_result_target_variable")); //$NON-NLS-1$ |
| } |
| |
| private CompoundVariable variablesNamesSplitBySeparator; |
| private CompoundVariable varName; |
| |
| /** |
| * No-arg constructor. |
| */ |
| public RandomFromMultipleVars() { |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String execute(SampleResult previousResult, Sampler currentSampler) |
| throws InvalidVariableException { |
| |
| String variablesNamesSplitBySeparatorValue = variablesNamesSplitBySeparator.execute().trim(); |
| JMeterVariables vars = getVariables(); |
| String outputValue = ""; |
| String separator = ""; |
| if (vars != null) { // vars will be null on TestPlan |
| List<String> results = new ArrayList<>(); |
| String[] variables = variablesNamesSplitBySeparatorValue.split(SEPARATOR); |
| for (String varName : variables) { |
| if(!StringUtils.isEmpty(varName)) { |
| extractVariableValuesToList(varName, vars, results); |
| } |
| } |
| |
| if(results.size() > 0) { |
| int randomIndex = ThreadLocalRandom.current().nextInt(0, results.size()); |
| outputValue = results.get(randomIndex); |
| } else { |
| if(log.isDebugEnabled()) { |
| log.debug("RandomFromMultiResult didn't find <var>_matchNr in variables :'"+variablesNamesSplitBySeparatorValue |
| +"' using separator:'"+separator+"', will return empty value"); |
| } |
| } |
| |
| if (varName != null) { |
| final String varTrim = varName.execute().trim(); |
| if (varTrim.length() > 0){ |
| vars.put(varTrim, outputValue); |
| } |
| } |
| } |
| return outputValue; |
| |
| } |
| |
| /** |
| * @param variableName String |
| * @param vars {@link JMeterVariables} |
| * @param results {@link List} where results are stored |
| * @throws NumberFormatException |
| */ |
| private void extractVariableValuesToList(String variableName, |
| JMeterVariables vars, List<String> results) |
| throws NumberFormatException { |
| String matchNumberAsStr = vars.get(variableName+"_matchNr"); |
| int matchNumber = 0; |
| if(!StringUtils.isEmpty(matchNumberAsStr)) { |
| matchNumber = Integer.parseInt(matchNumberAsStr); |
| } |
| if(matchNumber > 0) { |
| for (int i = 1; i <= matchNumber; i++) { |
| results.add(vars.get(variableName+"_"+i)); |
| } |
| } else { |
| String value = vars.get(variableName); |
| if(!StringUtils.isEmpty(value)) { |
| results.add(value); |
| } |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void setParameters(Collection<CompoundVariable> parameters) throws InvalidVariableException { |
| checkParameterCount(parameters, 1, 2); |
| Object[] values = parameters.toArray(); |
| variablesNamesSplitBySeparator = (CompoundVariable) values[0]; |
| if (values.length>1){ |
| varName = (CompoundVariable) values[1]; |
| } |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public String getReferenceKey() { |
| return KEY; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public List<String> getArgumentDesc() { |
| return desc; |
| } |
| } |