JMeter example source code file (Load.java)

This example JMeter source code file (Load.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, error, exception, exception, file, gui, guipackage, hashtree, hashtree, illegaluseractionexception, illegaluseractionexception, io, load, string, string, swing, testplan, tree, unexpected, util

The JMeter Load.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.gui.action;

import java.awt.event.ActionEvent;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JFileChooser;
import javax.swing.JTree;
import javax.swing.tree.TreePath;

import org.apache.jmeter.exceptions.IllegalUserActionException;
import org.apache.jmeter.gui.GuiPackage;
import org.apache.jmeter.gui.tree.JMeterTreeNode;
import org.apache.jmeter.gui.util.FileDialoger;
import org.apache.jmeter.gui.util.MenuFactory;
import org.apache.jmeter.save.SaveService;
import org.apache.jmeter.services.FileServer;
import org.apache.jmeter.testelement.TestElement;
import org.apache.jmeter.testelement.TestPlan;
import org.apache.jmeter.testelement.WorkBench;
import org.apache.jmeter.util.JMeterUtils;
import org.apache.jorphan.collections.HashTree;
import org.apache.jorphan.logging.LoggingManager;
import org.apache.jorphan.util.JOrphanUtils;
import org.apache.log.Logger;

import com.thoughtworks.xstream.converters.ConversionException;

/**
 * Handles the Open (load a new file) and Merge commands.
 *
 */
public class Load implements Command {
    private static final Logger log = LoggingManager.getLoggerForClass();

    private static final boolean expandTree = JMeterUtils.getPropDefault("onload.expandtree", true); //$NON-NLS-1$

    private static final Set<String> commands = new HashSet();

    static {
        commands.add(ActionNames.OPEN);
        commands.add(ActionNames.MERGE);
    }

    public Load() {
        super();
    }

    public Set<String> getActionNames() {
        return commands;
    }

    public void doAction(ActionEvent e) {
        JFileChooser chooser = FileDialoger.promptToOpenFile(new String[] { ".jmx" }); //$NON-NLS-1$
        if (chooser == null) {
            return;
        }
        File selectedFile = chooser.getSelectedFile();
        if(selectedFile != null) {
            boolean merging = e.getActionCommand().equals(ActionNames.MERGE);
            // We must ask the user if it is ok to close current project
            if(!merging) {
                if (!Close.performAction(e)) {
                    return;
                }
            }
            loadProjectFile(e, selectedFile, merging);
        }
    }

    static void loadProjectFile(ActionEvent e, File f, boolean merging) {
        GuiPackage guiPackage = GuiPackage.getInstance();
        InputStream reader = null;
        try {
            if (f != null) {
                boolean isTestPlan = false;

                if (merging) {
                    log.info("Merging file: " + f);
                } else {
                    log.info("Loading file: " + f);
                    FileServer.getFileServer().setBasedir(f.getAbsolutePath());
                }
                reader = new FileInputStream(f);
                HashTree tree = SaveService.loadTree(reader);
                isTestPlan = insertLoadedTree(e.getID(), tree, merging);

                // don't change name if merging
                if (!merging && isTestPlan) {
                    guiPackage.setTestPlanFile(f.getAbsolutePath());
                }
            }
        } catch (NoClassDefFoundError ex) // Allow for missing optional jars
        {
            log.warn("Missing jar file", ex);
            String msg = ex.getMessage();
            if (msg == null) {
                msg = "Missing jar file - see log for details";
            }
            JMeterUtils.reportErrorToUser(msg);
        } catch (ConversionException ex) {
            log.warn("Could not convert file "+ex);
            JMeterUtils.reportErrorToUser(SaveService.CEtoString(ex));
        } catch (IOException ex) {
            log.warn("Error reading file: "+ex);
            String msg = ex.getMessage();
            if (msg == null) {
                msg = "Unexpected error - see log for details";
            }
            JMeterUtils.reportErrorToUser(msg);
        } catch (Exception ex) {
            log.warn("Unexpected error", ex);
            String msg = ex.getMessage();
            if (msg == null) {
                msg = "Unexpected error - see log for details";
            }
            JMeterUtils.reportErrorToUser(msg);
        } finally {
            JOrphanUtils.closeQuietly(reader);
            guiPackage.updateCurrentGui();
            guiPackage.getMainFrame().repaint();
        }
    }

    /**
     * Returns a boolean indicating whether the loaded tree was a full test plan
     */
    public static boolean insertLoadedTree(int id, HashTree tree, boolean merging) throws Exception, IllegalUserActionException {
        // convertTree(tree);
        if (tree == null) {
            throw new Exception("Error in TestPlan - see log file");
        }
        boolean isTestPlan = tree.getArray()[0] instanceof TestPlan;

        // If we are loading a new test plan, initialize the tree with the testplan node we are loading
        GuiPackage guiInstance = GuiPackage.getInstance();
        if(isTestPlan && !merging) {
            guiInstance.clearTestPlan((TestElement)tree.getArray()[0]);
        }

        if (merging){ // Check if target of merge is reasonable
            TestElement te = (TestElement)tree.getArray()[0];
            if (!(te instanceof WorkBench || te instanceof TestPlan)){// These are handled specially by addToTree
                boolean ok = MenuFactory.canAddTo(guiInstance.getCurrentNode(), te);
                if (!ok){
                    String name = te.getName();
                    String className = te.getClass().getName();
                    className = className.substring(className.lastIndexOf(".")+1);
                    throw new IllegalUserActionException("Can't merge "+name+" ("+className+") here");
                }
            }
        }
        HashTree newTree = guiInstance.addSubTree(tree);
        guiInstance.updateCurrentGui();
        guiInstance.getMainFrame().getTree().setSelectionPath(
                new TreePath(((JMeterTreeNode) newTree.getArray()[0]).getPath()));
        tree = guiInstance.getCurrentSubTree();
        // Send different event wether we are merging a test plan into another test plan,
        // or loading a testplan from scratch
        ActionEvent actionEvent = null;
        if(!merging) {
            actionEvent = new ActionEvent(tree.get(tree.getArray()[tree.size() - 1]), id, ActionNames.SUB_TREE_LOADED);
        }
        else {
            actionEvent = new ActionEvent(tree.get(tree.getArray()[tree.size() - 1]), id, ActionNames.SUB_TREE_MERGED);
        }

        ActionRouter.getInstance().actionPerformed(actionEvent);
        if (expandTree && !merging) { // don't automatically expand when merging
            JTree jTree = guiInstance.getMainFrame().getTree();
               for(int i = 0; i < jTree.getRowCount(); i++) {
                 jTree.expandRow(i);
               }
        }

        return isTestPlan;
    }

    public static boolean insertLoadedTree(int id, HashTree tree) throws Exception, IllegalUserActionException {
        return insertLoadedTree(id, tree, false);
    }
}