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OptaPlanner solves planning problems.
This lightweight, embeddable planning engine implements powerful and scalable algorithms
to optimize business resource scheduling and planning.
This module contains the examples which demonstrate how to use it in a normal Java application.
package org.optaplanner.examples.cloudbalancing.swingui;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.LongFunction;
import javax.swing.AbstractAction;
import javax.swing.GroupLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import org.optaplanner.examples.cloudbalancing.domain.CloudBalance;
import org.optaplanner.examples.cloudbalancing.domain.CloudComputer;
import org.optaplanner.examples.cloudbalancing.domain.CloudProcess;
import org.optaplanner.examples.cloudbalancing.swingui.realtime.AddComputerProblemChange;
import org.optaplanner.examples.cloudbalancing.swingui.realtime.AddProcessProblemChange;
import org.optaplanner.examples.cloudbalancing.swingui.realtime.DeleteComputerProblemChange;
import org.optaplanner.examples.cloudbalancing.swingui.realtime.DeleteProcessProblemChange;
import org.optaplanner.examples.common.swingui.SolutionPanel;
import org.optaplanner.examples.common.swingui.components.LabeledComboBoxRenderer;
import org.optaplanner.swing.impl.SwingUtils;
import org.optaplanner.swing.impl.TangoColorFactory;
public class CloudBalancingPanel extends SolutionPanel {
public static final String LOGO_PATH = "/org/optaplanner/examples/cloudbalancing/swingui/cloudBalancingLogo.png";
private final TangoColorFactory processColorFactory;
private final ImageIcon cloudComputerIcon;
private final ImageIcon addCloudComputerIcon;
private final ImageIcon deleteCloudComputerIcon;
private final ImageIcon cloudProcessIcon;
private final ImageIcon addCloudProcessIcon;
private final ImageIcon deleteCloudProcessIcon;
private JPanel computersPanel;
private CloudComputerPanel unassignedPanel;
private Map computerToPanelMap;
private int maximumComputerCpuPower;
private int maximumComputerMemory;
private int maximumComputerNetworkBandwidth;
public CloudBalancingPanel() {
processColorFactory = new TangoColorFactory();
cloudComputerIcon = new ImageIcon(getClass().getResource("cloudComputer.png"));
addCloudComputerIcon = new ImageIcon(getClass().getResource("addCloudComputer.png"));
deleteCloudComputerIcon = new ImageIcon(getClass().getResource("deleteCloudComputer.png"));
cloudProcessIcon = new ImageIcon(getClass().getResource("cloudProcess.png"));
addCloudProcessIcon = new ImageIcon(getClass().getResource("addCloudProcess.png"));
deleteCloudProcessIcon = new ImageIcon(getClass().getResource("deleteCloudProcess.png"));
GroupLayout layout = new GroupLayout(this);
setLayout(layout);
JPanel headerPanel = createHeaderPanel();
JPanel computersPanel = createComputersPanel();
layout.setHorizontalGroup(layout.createParallelGroup()
.addComponent(headerPanel).addComponent(computersPanel));
layout.setVerticalGroup(layout.createSequentialGroup()
.addComponent(headerPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.PREFERRED_SIZE,
GroupLayout.PREFERRED_SIZE)
.addComponent(computersPanel, GroupLayout.PREFERRED_SIZE, GroupLayout.PREFERRED_SIZE,
GroupLayout.PREFERRED_SIZE));
}
public Color getCloudProcessColor(CloudProcess process) {
return processColorFactory.pickColor(process.getLabel());
}
public ImageIcon getCloudComputerIcon() {
return cloudComputerIcon;
}
public ImageIcon getAddCloudComputerIcon() {
return addCloudComputerIcon;
}
public ImageIcon getDeleteCloudComputerIcon() {
return deleteCloudComputerIcon;
}
public ImageIcon getCloudProcessIcon() {
return cloudProcessIcon;
}
public ImageIcon getAddCloudProcessIcon() {
return addCloudProcessIcon;
}
public ImageIcon getDeleteCloudProcessIcon() {
return deleteCloudProcessIcon;
}
public int getMaximumComputerCpuPower() {
return maximumComputerCpuPower;
}
public int getMaximumComputerMemory() {
return maximumComputerMemory;
}
public int getMaximumComputerNetworkBandwidth() {
return maximumComputerNetworkBandwidth;
}
private JPanel createHeaderPanel() {
JPanel headerPanel = new JPanel(new GridLayout(0, 5));
JPanel addPanel = new JPanel(new GridLayout());
JButton addComputerButton = SwingUtils.makeSmallButton(new JButton(addCloudComputerIcon));
addComputerButton.setToolTipText("Add computer");
addComputerButton
.addActionListener(e -> addComputer(expectedId -> new CloudComputer(expectedId, 12, 32, 12, 400 + 400 + 600)));
addPanel.add(addComputerButton);
JButton addProcessButton = SwingUtils.makeSmallButton(new JButton(addCloudProcessIcon));
addProcessButton.setToolTipText("Add process");
addProcessButton.addActionListener(e -> addProcess(expectedId -> new CloudProcess(expectedId, 3, 8, 3)));
addPanel.add(addProcessButton);
JPanel cornerPanel = new JPanel(new BorderLayout());
cornerPanel.add(addPanel, BorderLayout.EAST);
headerPanel.add(cornerPanel);
JLabel cpuPowerLabel = new JLabel("CPU power");
headerPanel.add(cpuPowerLabel);
JLabel memoryLabel = new JLabel("Memory");
headerPanel.add(memoryLabel);
JLabel networkBandwidthLabel = new JLabel("Network bandwidth");
headerPanel.add(networkBandwidthLabel);
JLabel costLabel = new JLabel("Cost");
headerPanel.add(costLabel);
return headerPanel;
}
private JPanel createComputersPanel() {
computersPanel = new JPanel(new GridLayout(0, 1));
computerToPanelMap = new LinkedHashMap<>();
return computersPanel;
}
@Override
public void resetPanel(CloudBalance cloudBalance) {
maximumComputerCpuPower = 0;
maximumComputerMemory = 0;
maximumComputerNetworkBandwidth = 0;
for (CloudComputer computer : cloudBalance.getComputerList()) {
if (computer.getCpuPower() > maximumComputerCpuPower) {
maximumComputerCpuPower = computer.getCpuPower();
}
if (computer.getMemory() > maximumComputerMemory) {
maximumComputerMemory = computer.getMemory();
}
if (computer.getNetworkBandwidth() > maximumComputerNetworkBandwidth) {
maximumComputerNetworkBandwidth = computer.getNetworkBandwidth();
}
}
for (CloudComputerPanel computerPanel : computerToPanelMap.values()) {
if (computerPanel.getComputer() != null) {
computersPanel.remove(computerPanel);
}
}
computerToPanelMap.clear();
computersPanel.removeAll();
unassignedPanel = new CloudComputerPanel(this, null);
computersPanel.add(unassignedPanel);
computerToPanelMap.put(null, unassignedPanel);
updatePanel(cloudBalance);
}
@Override
public void updatePanel(CloudBalance cloudBalance) {
Set deadCloudComputerSet = new LinkedHashSet<>(computerToPanelMap.keySet());
deadCloudComputerSet.remove(null);
for (CloudComputer computer : cloudBalance.getComputerList()) {
deadCloudComputerSet.remove(computer);
CloudComputerPanel computerPanel = computerToPanelMap.get(computer);
if (computerPanel == null) {
computerPanel = new CloudComputerPanel(this, computer);
computersPanel.add(computerPanel);
computerToPanelMap.put(computer, computerPanel);
}
computerPanel.clearProcesses();
}
unassignedPanel.clearProcesses();
for (CloudProcess process : cloudBalance.getProcessList()) {
CloudComputer computer = process.getComputer();
CloudComputerPanel computerPanel = computerToPanelMap.get(computer);
computerPanel.addProcess(process);
}
for (CloudComputer deadComputer : deadCloudComputerSet) {
CloudComputerPanel deadComputerPanel = computerToPanelMap.remove(deadComputer);
computersPanel.remove(deadComputerPanel);
}
for (CloudComputerPanel computerPanel : computerToPanelMap.values()) {
computerPanel.update();
}
// If computersPanel.add() or computersPanel.remove() was called, the component needs to be validated.
computersPanel.validate();
}
public void addComputer(final LongFunction computerGenerator) {
logger.info("Scheduling addition of computer.");
doProblemChange(new AddComputerProblemChange(computerGenerator));
}
public void deleteComputer(final CloudComputer computer) {
logger.info("Scheduling delete of computer ({}).", computer);
doProblemChange(new DeleteComputerProblemChange(computer));
}
public void addProcess(final LongFunction processGenerator) {
logger.info("Scheduling addition of process.");
doProblemChange(new AddProcessProblemChange(processGenerator));
}
public void deleteProcess(final CloudProcess process) {
logger.info("Scheduling delete of process ({}).", process);
doProblemChange(new DeleteProcessProblemChange(process));
}
public JButton createButton(CloudProcess process, Runnable removeAction) {
return SwingUtils.makeSmallButton(new JButton(new CloudProcessAction(process, removeAction)));
}
private class CloudProcessAction extends AbstractAction {
private final CloudProcess process;
private final Runnable removeAction;
public CloudProcessAction(CloudProcess process, Runnable removeAction) {
super(process.getLabel());
this.process = process;
this.removeAction = removeAction;
}
@Override
public void actionPerformed(ActionEvent e) {
JPanel listFieldsPanel = new JPanel(new GridLayout(1, 2));
listFieldsPanel.add(new JLabel("Computer:"));
List computerList = getSolution().getComputerList();
// Add 1 to array size to add null, which makes the entity unassigned
JComboBox computerListField = new JComboBox(computerList.toArray(new Object[computerList.size() + 1]));
LabeledComboBoxRenderer.applyToComboBox(computerListField);
computerListField.setSelectedItem(process.getComputer());
listFieldsPanel.add(computerListField);
int result = JOptionPane.showConfirmDialog(CloudBalancingPanel.this.getRootPane(), listFieldsPanel,
"Select computer", JOptionPane.OK_CANCEL_OPTION);
if (result == JOptionPane.OK_OPTION) {
CloudComputer toComputer = (CloudComputer) computerListField.getSelectedItem();
if (process.getComputer() != toComputer) {
doProblemChange((workingSolution, problemChangeDirector) -> problemChangeDirector.changeVariable(process,
"computer",
proc -> process.setComputer(toComputer)), true);
removeAction.run();
}
solverAndPersistenceFrame.resetScreen();
}
}
}
}