JMeter example source code file (RenderAsRegexp.java)

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

Java - JMeter tags/keywords

awt, borderlayout, event, gui, jpanel, jpanel, jtextarea, jtextarea, match, non-nls-1, non-nls-1, patternmatcherinput, perl5matcher, sampleresult, string, string, stringbuilder, swing, util

The JMeter RenderAsRegexp.java 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
 *
 *   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.visualizers;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.LinkedList;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTabbedPane;
import javax.swing.JTextArea;

import org.apache.jmeter.samplers.SampleResult;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.gui.GuiUtils;
import org.apache.jorphan.gui.JLabeledTextField;
import org.apache.oro.text.PatternCacheLRU;
import org.apache.oro.text.regex.MatchResult;
import org.apache.oro.text.regex.Pattern;
import org.apache.oro.text.regex.PatternMatcherInput;
import org.apache.oro.text.regex.Perl5Compiler;
import org.apache.oro.text.regex.Perl5Matcher;

/**
 * Implement ResultsRender for Regexp tester
 */
public class RenderAsRegexp implements ResultRenderer, ActionListener {

    private static final String REGEXP_TESTER_COMMAND = "regexp_tester"; // $NON-NLS-1$

    private JPanel regexpPane;

    private JTextArea regexpDataField;

    private JLabeledTextField regexpField;

    private JTextArea regexpResultField;

    private JTabbedPane rightSide;

    private SampleResult sampleResult = null;

    /** {@inheritDoc} */
    public void clearData() {
        this.regexpDataField.setText(""); // $NON-NLS-1$
        // don't set empty to keep regexp
        // regexpField.setText(""); // $NON-NLS-1$
        this.regexpResultField.setText(""); // $NON-NLS-1$
    }

    /** {@inheritDoc} */
    public void init() {
        // Create the panels for the regexp tab
        regexpPane = createRegexpPanel();
    }

    /**
     * Display the response as text or as rendered HTML. Change the text on the
     * button appropriate to the current display.
     *
     * @param e the ActionEvent being processed
     */
    public void actionPerformed(ActionEvent e) {
        String command = e.getActionCommand();
        if ((sampleResult != null) && (REGEXP_TESTER_COMMAND.equals(command))) {
            String response = ViewResultsFullVisualizer.getResponseAsString(sampleResult);
            executeAndShowRegexpTester(response);
        }
    }

    /**
     * Launch regexp engine to parse a input text
     * @param textToParse
     */
    private void executeAndShowRegexpTester(String textToParse) {
        if (textToParse != null && textToParse.length() > 0
                && this.regexpField.getText().length() > 0) {
            this.regexpResultField.setText(process(textToParse));
        }
    }

    private String process(String textToParse) {

        Perl5Matcher matcher = new Perl5Matcher();
        PatternMatcherInput input = new PatternMatcherInput(textToParse);

        PatternCacheLRU pcLRU = new PatternCacheLRU();
        Pattern pattern = pcLRU.getPattern(regexpField.getText(), Perl5Compiler.READ_ONLY_MASK);
        List<MatchResult> matches = new LinkedList();
        while (matcher.contains(input, pattern)) {
            matches.add(matcher.getMatch());
        }
        // Construct a multi-line string with all matches
        StringBuilder sb = new StringBuilder();
        final int size = matches.size();
        sb.append("Match count: ").append(size).append("\n");
        for (int j = 0; j < size; j++) {
            MatchResult mr = matches.get(j);
            final int groups = mr.groups();
            for (int i = 0; i < groups; i++) {
                sb.append("Match[").append(j+1).append("][").append(i).append("]=").append(mr.group(i)).append("\n");
            }
        }
        return sb.toString();

    }
    /** {@inheritDoc} */
   public void renderResult(SampleResult sampleResult) {
       clearData();
        String response = ViewResultsFullVisualizer.getResponseAsString(sampleResult);
        regexpDataField.setText(response);
        regexpDataField.setCaretPosition(0);
    }

    /** {@inheritDoc} */
    public void setupTabPane() {
         // Add regexp tester pane
        if (rightSide.indexOfTab(JMeterUtils.getResString("regexp_tester_title")) < 0) { // $NON-NLS-1$
            rightSide.addTab(JMeterUtils.getResString("regexp_tester_title"), regexpPane); // $NON-NLS-1$
        }
        clearData();
    }

    /**
     * @return RegExp Tester panel
     */
    private JPanel createRegexpPanel() {
        regexpDataField = new JTextArea();
        regexpDataField.setEditable(false);
        regexpDataField.setLineWrap(true);
        regexpDataField.setWrapStyleWord(true);

        JScrollPane regexpDataPane = GuiUtils.makeScrollPane(regexpDataField);
        regexpDataPane.setMinimumSize(new Dimension(0, 200));

        JPanel pane = new JPanel(new BorderLayout(0, 5));

        JSplitPane mainSplit = new JSplitPane(JSplitPane.VERTICAL_SPLIT,
                regexpDataPane, createRegexpTasksPanel());
        mainSplit.setDividerLocation(300);
        pane.add(mainSplit, BorderLayout.CENTER);
        return pane;
    }

    /**
     * Create the Regexp task pane
     *
     * @return Regexp task pane
     */
    private JPanel createRegexpTasksPanel() {
        JPanel regexpActionPanel = new JPanel();
        regexpField = new JLabeledTextField(JMeterUtils.getResString("regexp_tester_field")); // $NON-NLS-1$
        regexpActionPanel.add(regexpField, BorderLayout.WEST);

        JButton regexpTester = new JButton(JMeterUtils.getResString("regexp_tester_button_test")); // $NON-NLS-1$
        regexpTester.setActionCommand(REGEXP_TESTER_COMMAND);
        regexpTester.addActionListener(this);
        regexpActionPanel.add(regexpTester, BorderLayout.EAST);

        regexpResultField = new JTextArea();
        regexpResultField.setEditable(false);
        regexpResultField.setLineWrap(true);
        regexpResultField.setWrapStyleWord(true);

        JPanel regexpTasksPanel = new JPanel(new BorderLayout(0, 5));
        regexpTasksPanel.add(regexpActionPanel, BorderLayout.NORTH);
        regexpTasksPanel.add(GuiUtils.makeScrollPane(regexpResultField), BorderLayout.CENTER);

        return regexpTasksPanel;
    }

    /** {@inheritDoc} */
    public synchronized void setRightSide(JTabbedPane side) {
        rightSide = side;
    }

    /** {@inheritDoc} */
    public synchronized void setSamplerResult(Object userObject) {
        if (userObject instanceof SampleResult) {
            sampleResult = (SampleResult) userObject;
        }
    }

    /** {@inheritDoc} */
    public void setLastSelectedTab(int index) {
        // nothing to do
    }

    /** {@inheritDoc} */
    @Override
    public String toString() {
        return JMeterUtils.getResString("regexp_tester_title"); // $NON-NLS-1$
    }

    /** {@inheritDoc} */
    public void renderImage(SampleResult sampleResult) {
        clearData();
        regexpDataField.setText(JMeterUtils.getResString("regexp_render_no_text")); // $NON-NLS-1$
    }

    /** {@inheritDoc} */
    public void setBackgroundColor(Color backGround) {
    }

}