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The source code// $Header: /home/cvs/jakarta-jmeter/src/functions/org/apache/jmeter/functions/BeanShell.java,v 1.3 2004/03/30 18:07:07 sebb Exp $ /* * Copyright 2004 The Apache Software Foundation. * * Licensed 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.io.Serializable; import java.lang.reflect.Method; 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.JMeterVariables; import org.apache.jmeter.util.JMeterUtils; import org.apache.jorphan.logging.LoggingManager; import org.apache.log.Logger; /** * A function which understands BeanShell * * ALPHA CODE - liable to change without notice! * ============================================= * * @version $Revision: 1.3 $ Updated on: $Date: 2004/03/30 18:07:07 $ */ public class BeanShell extends AbstractFunction implements Serializable { protected static Logger log = LoggingManager.getLoggerForClass(); private static final List desc = new LinkedList(); private static final String KEY = "__BeanShell"; static { desc.add(JMeterUtils.getResString("bsh_function_expression"));//$NON-NLS1$ desc.add(JMeterUtils.getResString("function_name_param"));//$NON-NLS1$ } private Object[] values; public BeanShell() { } public Object clone() { return new BeanShell(); } /* (non-Javadoc) * @see org.apache.jmeter.functions.Function#execute(SampleResult, Sampler) */ public synchronized String execute( SampleResult previousResult, Sampler currentSampler) throws InvalidVariableException { JMeterVariables vars = getVariables(); String script = ((CompoundVariable) values[0]).execute(); String varName = ""; if (values.length > 1){ varName = ((CompoundVariable) values[1]).execute(); } String resultStr = ""; log.debug("Script="+script); try { // Pass in some variables if (currentSampler != null) { setObj.invoke(instance, new Object[] {"Sampler",currentSampler}); } if (previousResult != null) { setObj.invoke(instance, new Object[] {"SampleResult",previousResult}); } setObj.invoke(instance, new Object[] {"log",log}); setObj.invoke(instance, new Object[] {"t",this}); // Execute the script Object bshOut = eval.invoke(instance, new Object[]{script}); if (bshOut != null) { resultStr = bshOut.toString(); } if (varName.length() > 0) { vars.put(varName, resultStr); } } catch (Exception ex) // Mainly for bsh.EvalError { log.warn("",ex); } log.debug("Output="+resultStr); return resultStr; } /* * Helper method for use by scripts * */ public void log_info(String s){ log.info(s); } transient private Object instance; transient private Method setObj; transient private Method eval; //TODO move to common class (in jorphan?) so can be shared with other BSH modules private void setupBeanShell() { ClassLoader loader = Thread.currentThread().getContextClassLoader(); try { Class Interpreter = loader.loadClass("bsh.Interpreter"); instance = Interpreter.newInstance(); Class string = String.class; Class object = Object.class; eval = Interpreter.getMethod( "eval", new Class[] {string}); setObj = Interpreter.getMethod( "set", new Class[] {string,object}); } catch(ClassNotFoundException e ){ log.error("Beanshell Interpreter not found"); } catch (Exception e) { log.error("Problem starting BeanShell server ",e); } } /* (non-Javadoc) * @see org.apache.jmeter.functions.Function#setParameters(Collection) */ public void setParameters(Collection parameters) throws InvalidVariableException { values = parameters.toArray(); if (values.length < 1 || values.length > 2) { throw new InvalidVariableException("Wrong number of variables"); } setupBeanShell(); } /* (non-Javadoc) * @see org.apache.jmeter.functions.Function#getReferenceKey() */ public String getReferenceKey() { return KEY; } /* (non-Javadoc) * @see org.apache.jmeter.functions.Function#getArgumentDesc() */ public List getArgumentDesc() { return desc; } } |
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