Browse code Started transition to JMS. master
1 parent df4a127 commit c4c6a9e7c9f3289d6ad3f0bfb5701194afd00496 geoma48p authored on 20 Jul 2015

Showing 16 changed files

• libs/activemq-all-5.11.1.jar
• nbproject/project.properties
• src/clients/StudentClient.java
• src/clients/TutorClient.java
• src/discovery/computername/OtagoComputerNameResolver.java
• src/discovery/jms/ServiceLocator.java
• src/gui/processors/TutorLabelProcessor.java
• src/network/RequestSender.java
• src/network/jms/RequestSender.java
• src/network/sockets/RequestSender.java
• src/server/jms/JmsConnection.java
• tests/Calm.java
• tests/Panic.java
• tests/RequestTest.java
• tests/ServerPeeker.java
• tests/StressTest.java

Ignore Space Show notes View libs/activemq-all-5.11.1.jar 0 → 100644
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Ignore Space Show notes View nbproject/project.properties

annotation.processing.enabled=true annotation.processing.enabled.in.editor=false annotation.processing.processors.list= annotation.processing.run.all.processors=true application.title=democall3 application.vendor=Mark build.classes.dir=${build.dir}/classes build.classes.excludes=**/*.java,**/*.form # This directory is removed when the project is cleaned: build.dir=build build.generated.dir=${build.dir}/generated build.generated.sources.dir=${build.dir}/generated-sources # Only compile against the classpath explicitly listed here: build.sysclasspath=ignore build.test.classes.dir=${build.dir}/test/classes build.test.results.dir=${build.dir}/test/results # Uncomment to specify the preferred debugger connection transport: #debug.transport=dt_socket debug.classpath=\ ${run.classpath} debug.test.classpath=\ ${run.test.classpath} # This directory is removed when the project is cleaned: dist.dir=dist dist.jar=${dist.dir}/democall3.jar dist.javadoc.dir=${dist.dir}/javadoc endorsed.classpath= excludes= file.reference.activemq-all-5.11.1.jar=libs\\activemq-all-5.11.1.jar includes=** jar.compress=false javac.classpath=\ ${file.reference.activemq-all-5.11.1.jar} # Space-separated list of extra javac options javac.compilerargs= javac.deprecation=false javac.processorpath=\ ${javac.classpath} javac.source=1.6 javac.target=1.6 javac.test.classpath=\ ${javac.classpath}:\ ${build.classes.dir} javadoc.additionalparam= javadoc.author=false javadoc.encoding=${source.encoding} javadoc.noindex=false javadoc.nonavbar=false javadoc.notree=false javadoc.private=false javadoc.splitindex=true javadoc.use=true javadoc.version=false javadoc.windowtitle= main.class=server.sockets.Server manifest.file=manifest.mf meta.inf.dir=${src.dir}/META-INF mkdist.disabled=false platform.active=default_platform run.classpath=\ ${javac.classpath}:\ ${build.classes.dir} run.test.classpath=\ ${javac.test.classpath}:\ ${build.test.classes.dir} source.encoding=UTF-8 src.dir=src test.tests.dir=tests annotation.processing.enabled=true annotation.processing.enabled.in.editor=false annotation.processing.processors.list= annotation.processing.run.all.processors=true application.title=democall3 application.vendor=geoma48p build.classes.dir=${build.dir}/classes build.classes.excludes=**/*.java,**/*.form # This directory is removed when the project is cleaned: build.dir=build build.generated.dir=${build.dir}/generated build.generated.sources.dir=${build.dir}/generated-sources # Only compile against the classpath explicitly listed here: build.sysclasspath=ignore build.test.classes.dir=${build.dir}/test/classes build.test.results.dir=${build.dir}/test/results # Uncomment to specify the preferred debugger connection transport: #debug.transport=dt_socket debug.classpath=\ ${run.classpath} debug.test.classpath=\ ${run.test.classpath} # This directory is removed when the project is cleaned: dist.dir=dist dist.jar=${dist.dir}/democall3.jar dist.javadoc.dir=${dist.dir}/javadoc endorsed.classpath= excludes= includes=** jar.compress=false javac.classpath= # Space-separated list of extra javac options javac.compilerargs= javac.deprecation=false javac.processorpath=\ ${javac.classpath} javac.source=1.6 javac.target=1.6 javac.test.classpath=\ ${javac.classpath}:\ ${build.classes.dir} javadoc.additionalparam= javadoc.author=false javadoc.encoding=${source.encoding} javadoc.noindex=false javadoc.nonavbar=false javadoc.notree=false javadoc.private=false javadoc.splitindex=true javadoc.use=true javadoc.version=false javadoc.windowtitle= main.class=server.sockets.Server manifest.file=manifest.mf meta.inf.dir=${src.dir}/META-INF mkdist.disabled=false platform.active=default_platform run.classpath=\ ${javac.classpath}:\ ${build.classes.dir} run.test.classpath=\ ${javac.test.classpath}:\ ${build.test.classes.dir} source.encoding=UTF-8 src.dir=src test.tests.dir=tests

Ignore Space Show notes View src/clients/StudentClient.java

package clients; import constants.Constants; import discovery.computername.ComputerNameResolver; import discovery.computername.InvalidComputerNameException; import discovery.computername.OtagoComputerNameResolver; import discovery.jms.ServiceLocator; import discovery.server.multicast.ServiceNotFoundException; import gui.Lab; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Collection; import java.util.logging.Level; import java.util.logging.Logger; import javax.swing.JOptionPane; import network.MessageGenerator; import network.jms.RequestSender; /* * The student's client for requesting help. * * It adds a system tray icon that has a pop-up menu that the student can use to * request help or cancel their request. Requests are automatically canceled * when the student clicks the "exit" menu item, or the client is terminated by * the OS (via a shutdown hook) meaning there should never be requests in the * queue for students who have gone home. * * This aims to be both simple and robust, therefor the StudentClient stores no * state relating to requests, uses no persistent connections to the server, and * receives no information from the server. * * The client uses a multi-cast broadcast to discover the IP of the server, * which it then uses to send requests to the server. * * The wire protocol is very simple. A string in the form "request 23" is a * request for from the machine with ID 23, and "cancel 23" will cancel that * request. Sending multiple "request" commands or multiple "cancel" commands to * the server should cause no duplication or problems on the server and are * effectively ignored. * * @author Mark */ public class StudentClient { private static final Logger LOG = Logger.getLogger(StudentClient.class.getName()); private final PopupMenu trayPopopMenu = new PopupMenu(); private final Image trayIconImage = Toolkit.getDefaultToolkit().getImage(getClass().getResource("/icon.png")); private final TrayIcon systemTrayIcon = new TrayIcon(trayIconImage, "Demo Call " + Constants.VERSION, trayPopopMenu); private final MessageGenerator generator = new MessageGenerator(); private String machineId; private RequestSender requestSender; private boolean foundServer = false; private final Thread shutDownHook = new Thread() { @Override public void run() { cleanUp(); } }; public StudentClient(final ComputerNameResolver nameResolver) { try { createTrayMenu(); // not sure this is necessary but Windows is currently not exiting // when the shutdown hook kicks in... this.shutDownHook.setDaemon(true); Runtime.getRuntime().addShutdownHook(this.shutDownHook); try { nameResolver.resolve(); } catch (InvalidComputerNameException ex) { this.systemTrayIcon.displayMessage("Whoops", ex.getMessage(), TrayIcon.MessageType.ERROR); // give user a chance to read message Thread.sleep(5000); // shutdown exit(); } final String currentLab = nameResolver.getLabName(); this.machineId = nameResolver.getMachineId(); // find server IP (uses network multicast) final Collection<String> activeServers = new ServiceLocator().getActiveServers(); final Lab lab = (Lab) JOptionPane.showInputDialog(null, "Which lab?", "Which lab?", JOptionPane.QUESTION_MESSAGE, null, activeServers.toArray(), currentLab); String labName=""; if (lab == null) { System.exit(0); } else { labName = lab.getLabName(); } this.foundServer = true; // this.systemTrayIcon.displayMessage("Yay", "Server found: " +serverIp, TrayIcon.MessageType.INFO); this.requestSender = new RequestSender(labName, machineId); } catch (ServiceNotFoundException ex) { this.systemTrayIcon.displayMessage("Whoops", "Could not connect to server. Please try again and let the supervisor know if it continues to happen.", TrayIcon.MessageType.ERROR); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } private void createTrayMenu() { try { this.systemTrayIcon.setImageAutoSize(true); final MenuItem requestHelp = new MenuItem("Request Help"); requestHelp.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { helpRequest(); } }); final MenuItem requestMarking = new MenuItem("Request Marking"); requestMarking.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { markingRequest(); } }); final MenuItem cancelHelp = new MenuItem("Cancel Help"); cancelHelp.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { cancelHelp(); } }); final MenuItem cancelMarking = new MenuItem("Cancel Marking"); cancelMarking.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { cancelMarking(); } }); final MenuItem cancelAll = new MenuItem("Cancel All Requests"); cancelAll.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { cancelAll(); } }); final MenuItem exit = new MenuItem("Exit"); exit.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { exit(); } }); this.trayPopopMenu.add(requestHelp); this.trayPopopMenu.add(cancelHelp); this.trayPopopMenu.addSeparator(); this.trayPopopMenu.add(requestMarking); this.trayPopopMenu.add(cancelMarking); this.trayPopopMenu.addSeparator(); this.trayPopopMenu.add(cancelAll); this.trayPopopMenu.addSeparator(); this.trayPopopMenu.add(exit); SystemTray.getSystemTray().add(this.systemTrayIcon); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } private void helpRequest() { try { requestSender.sendRequest(generator.requestHelp(machineId)); systemTrayIcon.displayMessage("Help is on the way", "Your request is now in the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to make request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error making request", ex); } } private void markingRequest() { try { requestSender.sendRequest(generator.requestMarking(machineId)); systemTrayIcon.displayMessage("Help is on the way", "Your request is now in the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to make request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error making request", ex); } } private void cancelHelp() { try { requestSender.sendRequest(generator.cancelHelp(machineId)); systemTrayIcon.displayMessage("Request removed", "Your request has been removed from the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to make request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error making request", ex); } } private void cancelMarking() { try { requestSender.sendRequest(generator.cancelMarking(machineId)); systemTrayIcon.displayMessage("Request removed", "Your request has been removed from the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to cancel request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error cancelling request", ex); } } private void cancelAll() { try { requestSender.sendRequest(generator.cancelHelp(machineId)); requestSender.sendRequest(generator.cancelMarking(machineId)); systemTrayIcon.displayMessage("All requests removeds", "All of your request have been removed from the queues.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to cancel request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error cancelling request", ex); } } private void exit() { this.cleanUp(); // force an exit since they are several threads lurking around that could keep the process running System.exit(0); } private void cleanUp() { // cancel any requests the student has made if (this.foundServer) { cancelAll(); } // remove the tray icon from the system tray SystemTray.getSystemTray().remove(systemTrayIcon); } @SuppressWarnings("ResultOfObjectAllocationIgnored") public static void main(final String[] args) { // System.out.println("Student Client"); // final String name = "SB318-15"; // final String name = "SB317-10"; // final String name = "SBEASTCAL1-30"; // final String name = "SB316-15"; final String name = args.length > 0 ? args[0] : null; final ComputerNameResolver nameResolver = new OtagoComputerNameResolver(name, "CLIENTNAME"); nameResolver.resolve(); System.out.println(nameResolver); new StudentClient(nameResolver); } } package clients; import constants.Constants; import discovery.computername.ComputerNameResolver; import discovery.computername.InvalidComputerNameException; import discovery.computername.OtagoComputerNameResolver; import discovery.server.multicast.ServiceLocator; import discovery.server.multicast.ServiceNotFoundException; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.logging.Level; import java.util.logging.Logger; import network.MessageGenerator; import network.RequestSender; /* * The student's client for requesting help. * * It adds a system tray icon that has a pop-up menu that the student can use to * request help or cancel their request. Requests are automatically canceled * when the student clicks the "exit" menu item, or the client is terminated by * the OS (via a shutdown hook) meaning there should never be requests in the * queue for students who have gone home. * * This aims to be both simple and robust, therefor the StudentClient stores no * state relating to requests, uses no persistent connections to the server, and * receives no information from the server. * * The client uses a multi-cast broadcast to discover the IP of the server, * which it then uses to send requests to the server. * * The wire protocol is very simple. A string in the form "request 23" is a * request for from the machine with ID 23, and "cancel 23" will cancel that * request. Sending multiple "request" commands or multiple "cancel" commands to * the server should cause no duplication or problems on the server and are * effectively ignored. * * @author Mark */ public class StudentClient { private static final Logger LOG = Logger.getLogger(StudentClient.class.getName()); private final PopupMenu trayPopopMenu = new PopupMenu(); private final Image trayIconImage = Toolkit.getDefaultToolkit().getImage(getClass().getResource("/icon.png")); private final TrayIcon systemTrayIcon = new TrayIcon(trayIconImage, "Demo Call " + Constants.VERSION, trayPopopMenu); private final MessageGenerator generator = new MessageGenerator(); private String machineId; private RequestSender requestSender; private boolean foundServer = false; private final Thread shutDownHook = new Thread() { @Override public void run() { cleanUp(); } }; public StudentClient(final ComputerNameResolver nameResolver) { try { createTrayMenu(); // not sure this is necessary but Windows is currently not exiting // when the shutdown hook kicks in... this.shutDownHook.setDaemon(true); Runtime.getRuntime().addShutdownHook(this.shutDownHook); try { nameResolver.resolve(); } catch (InvalidComputerNameException ex) { this.systemTrayIcon.displayMessage("Whoops", ex.getMessage(), TrayIcon.MessageType.ERROR); // give user a chance to read message Thread.sleep(5000); // shutdown exit(); } final String lab = nameResolver.getLabName(); this.machineId = nameResolver.getMachineId(); // find server IP (uses network multicast) final String serverIp = new ServiceLocator().locateServer(lab); this.foundServer = true; // this.systemTrayIcon.displayMessage("Yay", "Server found: " +serverIp, TrayIcon.MessageType.INFO); this.requestSender = new RequestSender(serverIp); } catch (ServiceNotFoundException ex) { this.systemTrayIcon.displayMessage("Whoops", "Could not connect to server. Please try again and let the supervisor know if it continues to happen.", TrayIcon.MessageType.ERROR); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } private void createTrayMenu() { try { this.systemTrayIcon.setImageAutoSize(true); final MenuItem requestHelp = new MenuItem("Request Help"); requestHelp.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { helpRequest(); } }); final MenuItem requestMarking = new MenuItem("Request Marking"); requestMarking.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { markingRequest(); } }); final MenuItem cancelHelp = new MenuItem("Cancel Help"); cancelHelp.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { cancelHelp(); } }); final MenuItem cancelMarking = new MenuItem("Cancel Marking"); cancelMarking.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { cancelMarking(); } }); final MenuItem cancelAll = new MenuItem("Cancel All Requests"); cancelAll.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { cancelAll(); } }); final MenuItem exit = new MenuItem("Exit"); exit.addActionListener(new ActionListener() { public void actionPerformed(final ActionEvent e) { exit(); } }); this.trayPopopMenu.add(requestHelp); this.trayPopopMenu.add(cancelHelp); this.trayPopopMenu.addSeparator(); this.trayPopopMenu.add(requestMarking); this.trayPopopMenu.add(cancelMarking); this.trayPopopMenu.addSeparator(); this.trayPopopMenu.add(cancelAll); this.trayPopopMenu.addSeparator(); this.trayPopopMenu.add(exit); SystemTray.getSystemTray().add(this.systemTrayIcon); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } private void helpRequest() { try { requestSender.sendRequest(generator.requestHelp(machineId)); systemTrayIcon.displayMessage("Help is on the way", "Your request is now in the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to make request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error making request", ex); } } private void markingRequest() { try { requestSender.sendRequest(generator.requestMarking(machineId)); systemTrayIcon.displayMessage("Help is on the way", "Your request is now in the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to make request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error making request", ex); } } private void cancelHelp() { try { requestSender.sendRequest(generator.cancelHelp(machineId)); systemTrayIcon.displayMessage("Request removed", "Your request has been removed from the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to make request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error making request", ex); } } private void cancelMarking() { try { requestSender.sendRequest(generator.cancelMarking(machineId)); systemTrayIcon.displayMessage("Request removed", "Your request has been removed from the queue.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to cancel request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error cancelling request", ex); } } private void cancelAll() { try { requestSender.sendRequest(generator.cancelHelp(machineId)); requestSender.sendRequest(generator.cancelMarking(machineId)); systemTrayIcon.displayMessage("All requests removeds", "All of your request have been removed from the queues.", TrayIcon.MessageType.INFO); } catch (Exception ex) { systemTrayIcon.displayMessage("Whoops", "Failed to cancel request", TrayIcon.MessageType.ERROR); LOG.log(Level.SEVERE, "Error cancelling request", ex); } } private void exit() { this.cleanUp(); // force an exit since they are several threads lurking around that could keep the process running System.exit(0); } private void cleanUp() { // cancel any requests the student has made if (this.foundServer) { cancelAll(); } // remove the tray icon from the system tray SystemTray.getSystemTray().remove(systemTrayIcon); } @SuppressWarnings("ResultOfObjectAllocationIgnored") public static void main(final String[] args) { // System.out.println("Student Client"); // final String name = "SB318-15"; // final String name = "SB317-10"; // final String name = "SBEASTCAL1-30"; // final String name = "SB316-15"; final String name = args.length > 0 ? args[0] : null; final ComputerNameResolver nameResolver = new OtagoComputerNameResolver(name, "CLIENTNAME"); new StudentClient(nameResolver); } }

Ignore Space Show notes View src/clients/TutorClient.java

package clients; import constants.Constants; import discovery.computername.ComputerNameResolver; import discovery.computername.InvalidComputerNameException; import discovery.computername.OtagoComputerNameResolver; import discovery.server.multicast.ServiceLocator; import discovery.server.multicast.ServiceNotFoundException; import gui.Lab; import gui.LabRegistry; import gui.QueuePanel; import gui.processors.TutorLabelProcessor; import java.awt.event.ComponentAdapter; import java.awt.event.ComponentEvent; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.Socket; import java.util.LinkedHashSet; import java.util.logging.Level; import java.util.logging.Logger; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.Clip; import javax.swing.GroupLayout; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.LayoutStyle; import network.sockets.RequestSender; /** * * @author Mark */ public class TutorClient { private static final Logger LOG = Logger.getLogger(TutorClient.class.getName()); private TutorLabelProcessor processor; private String serverIp; private Clip beep; @SuppressWarnings("rawtypes") public TutorClient(final ComputerNameResolver nameResolver) { JFrame frame = null; try { nameResolver.resolve(); String labName = nameResolver.getLabName(); final LabRegistry registry = new LabRegistry(); final Lab[] labs = registry.getLabs().toArray(new Lab[registry.getLabs().size()]); final Lab currentLab = registry.getLab(labName); final Lab lab = (Lab) JOptionPane.showInputDialog(null, "Which lab?", "Which lab?", JOptionPane.QUESTION_MESSAGE, null, labs, currentLab); if (lab == null) { System.exit(0); } else { labName = lab.getLabName(); } serverIp = new ServiceLocator().locateServer(labName); frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setAlwaysOnTop(true); final JPanel mapPanel = lab.getPanel(); QueuePanel helpPanel = new QueuePanel(new LinkedHashSet()); QueuePanel markingPanel = new QueuePanel(new LinkedHashSet()); processor = new TutorLabelProcessor(helpPanel, markingPanel, serverIp); processor.processLabels(mapPanel); frame.setTitle(String.format("Democall %1s - Tutor Client (%1s)", Constants.VERSION, lab.getLabDescription())); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(frame.getContentPane()); frame.getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(GroupLayout.Alignment.LEADING) .addComponent(helpPanel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE) .addComponent(markingPanel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE) .addComponent(mapPanel, GroupLayout.Alignment.CENTER, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)); layout.setVerticalGroup( layout.createParallelGroup(GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(helpPanel, Constants.QUEUE_MIN_HEIGHT, GroupLayout.DEFAULT_SIZE, Constants.QUEUE_MAX_HEIGHT) .addComponent(markingPanel, Constants.QUEUE_MIN_HEIGHT, GroupLayout.DEFAULT_SIZE, Constants.QUEUE_MAX_HEIGHT) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED) .addComponent(mapPanel, 100, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED))); frame.pack(); frame.setVisible(true); final Socket socket = new RequestSender(serverIp).registerTutorClient(); new Thread(new Runnable() { @Override public void run() { try { BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream())); while (true) { final String message = reader.readLine(); if (message != null) { // readLine returns null if buffer is empty processMessage(message); } } } catch (IOException ex) { Logger.getLogger(TutorClient.class.getName()).log(Level.SEVERE, null, ex); } } } ).start(); // dynamic font resize based on window size final int defaultSize = Constants.DEFAULT_MAP_FONT_SIZE; final int defaultWidth = mapPanel.getWidth(); frame.addComponentListener( new ComponentAdapter() { @Override public void componentResized(ComponentEvent e) { int newWidth = mapPanel.getWidth(); float scaleFactor = (float) newWidth / (float) defaultWidth; int newFontSize = Math.round(defaultSize * scaleFactor); processor.resizeFonts(newFontSize); } } ); // load the beep audio clip into the audio system sample bank AudioInputStream is = AudioSystem.getAudioInputStream(getClass().getResourceAsStream("/blip.wav")); beep = AudioSystem.getClip(); beep.open(is); } catch (InvalidComputerNameException ex) { JOptionPane.showMessageDialog(frame, ex.getMessage(), "Error getting computer name.", JOptionPane.ERROR_MESSAGE); } catch (ServiceNotFoundException ex) { JOptionPane.showMessageDialog(frame, "Could not connect to server.", "Connection error", JOptionPane.ERROR_MESSAGE); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } public void processMessage(final String message) { // System.out.println("processMessage: " + message); final String[] messageBits = message.split(" "); final String performative = messageBits[0]; final int machineId = Integer.parseInt(messageBits[1]); if ("help".equals(performative)) { processor.requestHelp(machineId); beep(); } else if ("marking".equals(performative)) { processor.requestMarking(machineId); beep(); } else if ("cancelhelp".equals(performative)) { processor.cancelHelp(machineId); } else if ("cancelmarking".equals(performative)) { processor.cancelMarking(machineId); } } private void beep() { try { if(beep !=null && beep.isRunning()) beep.stop(); beep.setFramePosition(0); // rewind clip beep.start(); } catch (Exception ex) { Logger.getLogger(TutorClient.class.getName()).log(Level.SEVERE, null, ex); } } @SuppressWarnings("ResultOfObjectAllocationIgnored") public static void main(final String[] args) { // System.out.println("Tutor Client"); // final String name = "SBEASTCAL1-31"; // final String name = "SB318-10"; // final String name = "SB316-10"; final String name = args.length > 0 ? args[0] : null; final ComputerNameResolver nameResolver = new OtagoComputerNameResolver(name, "CLIENTNNAME"); new TutorClient(nameResolver); } } package clients; import constants.Constants; import discovery.computername.ComputerNameResolver; import discovery.computername.InvalidComputerNameException; import discovery.computername.OtagoComputerNameResolver; import discovery.server.multicast.ServiceLocator; import discovery.server.multicast.ServiceNotFoundException; import gui.Lab; import gui.LabRegistry; import gui.QueuePanel; import gui.processors.TutorLabelProcessor; import java.awt.event.ComponentAdapter; import java.awt.event.ComponentEvent; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.Socket; import java.util.LinkedHashSet; import java.util.logging.Level; import java.util.logging.Logger; import javax.sound.sampled.AudioInputStream; import javax.sound.sampled.AudioSystem; import javax.sound.sampled.Clip; import javax.swing.GroupLayout; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.LayoutStyle; import network.RequestSender; /** * * @author Mark */ public class TutorClient { private static final Logger LOG = Logger.getLogger(TutorClient.class.getName()); private TutorLabelProcessor processor; private String serverIp; private Clip beep; @SuppressWarnings("rawtypes") public TutorClient(final ComputerNameResolver nameResolver) { JFrame frame = null; try { nameResolver.resolve(); String labName = nameResolver.getLabName(); final LabRegistry registry = new LabRegistry(); final Lab[] labs = registry.getLabs().toArray(new Lab[registry.getLabs().size()]); final Lab currentLab = registry.getLab(labName); final Lab lab = (Lab) JOptionPane.showInputDialog(null, "Which lab?", "Which lab?", JOptionPane.QUESTION_MESSAGE, null, labs, currentLab); if (lab == null) { System.exit(0); } else { labName = lab.getLabName(); } serverIp = new ServiceLocator().locateServer(labName); frame = new JFrame(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setAlwaysOnTop(true); final JPanel mapPanel = lab.getPanel(); QueuePanel helpPanel = new QueuePanel(new LinkedHashSet()); QueuePanel markingPanel = new QueuePanel(new LinkedHashSet()); processor = new TutorLabelProcessor(helpPanel, markingPanel, serverIp); processor.processLabels(mapPanel); frame.setTitle(String.format("Democall %1s - Tutor Client (%1s)", Constants.VERSION, lab.getLabDescription())); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(frame.getContentPane()); frame.getContentPane().setLayout(layout); layout.setHorizontalGroup( layout.createParallelGroup(GroupLayout.Alignment.LEADING) .addComponent(helpPanel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE) .addComponent(markingPanel, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE) .addComponent(mapPanel, GroupLayout.Alignment.CENTER, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)); layout.setVerticalGroup( layout.createParallelGroup(GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(helpPanel, Constants.QUEUE_MIN_HEIGHT, GroupLayout.DEFAULT_SIZE, Constants.QUEUE_MAX_HEIGHT) .addComponent(markingPanel, Constants.QUEUE_MIN_HEIGHT, GroupLayout.DEFAULT_SIZE, Constants.QUEUE_MAX_HEIGHT) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED) .addComponent(mapPanel, 100, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addPreferredGap(LayoutStyle.ComponentPlacement.RELATED))); frame.pack(); frame.setVisible(true); final Socket socket = new RequestSender(serverIp).registerTutorClient(); new Thread(new Runnable() { @Override public void run() { try { BufferedReader reader = new BufferedReader(new InputStreamReader(socket.getInputStream())); while (true) { final String message = reader.readLine(); if (message != null) { // readLine returns null if buffer is empty processMessage(message); } } } catch (IOException ex) { Logger.getLogger(TutorClient.class.getName()).log(Level.SEVERE, null, ex); } } } ).start(); // dynamic font resize based on window size final int defaultSize = Constants.DEFAULT_MAP_FONT_SIZE; final int defaultWidth = mapPanel.getWidth(); frame.addComponentListener( new ComponentAdapter() { @Override public void componentResized(ComponentEvent e) { int newWidth = mapPanel.getWidth(); float scaleFactor = (float) newWidth / (float) defaultWidth; int newFontSize = Math.round(defaultSize * scaleFactor); processor.resizeFonts(newFontSize); } } ); // load the beep audio clip into the audio system sample bank AudioInputStream is = AudioSystem.getAudioInputStream(getClass().getResourceAsStream("/blip.wav")); beep = AudioSystem.getClip(); beep.open(is); } catch (InvalidComputerNameException ex) { JOptionPane.showMessageDialog(frame, ex.getMessage(), "Error getting computer name.", JOptionPane.ERROR_MESSAGE); } catch (ServiceNotFoundException ex) { JOptionPane.showMessageDialog(frame, "Could not connect to server.", "Connection error", JOptionPane.ERROR_MESSAGE); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } public void processMessage(final String message) { // System.out.println("processMessage: " + message); final String[] messageBits = message.split(" "); final String performative = messageBits[0]; final int machineId = Integer.parseInt(messageBits[1]); if ("help".equals(performative)) { processor.requestHelp(machineId); beep(); } else if ("marking".equals(performative)) { processor.requestMarking(machineId); beep(); } else if ("cancelhelp".equals(performative)) { processor.cancelHelp(machineId); } else if ("cancelmarking".equals(performative)) { processor.cancelMarking(machineId); } } private void beep() { try { if(beep !=null && beep.isRunning()) beep.stop(); beep.setFramePosition(0); // rewind clip beep.start(); } catch (Exception ex) { Logger.getLogger(TutorClient.class.getName()).log(Level.SEVERE, null, ex); } } @SuppressWarnings("ResultOfObjectAllocationIgnored") public static void main(final String[] args) { // System.out.println("Tutor Client"); // final String name = "SBEASTCAL1-31"; // final String name = "SB318-10"; // final String name = "SB316-10"; final String name = args.length > 0 ? args[0] : null; final ComputerNameResolver nameResolver = new OtagoComputerNameResolver(name, "CLIENTNNAME"); new TutorClient(nameResolver); } }

Ignore Space Show notes View src/discovery/computername/OtagoComputerNameResolver.java

package discovery.computername; import java.util.List; import java.util.ArrayList; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * @author Mark */ public final class OtagoComputerNameResolver implements ComputerNameResolver { private final String computerName; private String labName; private String machineId; private List<String> regexes = new ArrayList<String>(); /** * <p> * Otago University lab machines usually have a COMPUTERNAME environment * variable in the form "labname-machineId", eg SB316-23.</p> * * <p> * If the name parameter is set then use that, otherwise use the envVar * parameter to get the name from an environment variable.</p> * * @param name the computer name to use (or null). * @param envVar the environment variable to use if name is not set. * */ public OtagoComputerNameResolver(final String name, final String envVar) { super(); if (name == null) { computerName = System.getenv(envVar); } else { computerName = name; } regexes.add("(SB\\d\\d\\d)-(\\d\\d)"); // SoB old style regexes.add("(SB\\d\\d\\d)(\\d\\d)"); // SoB incompetent-tech style regexes.add("(TF\\d\\d)(\\d\\d)"); // Teaching facilities 4 digit style regexes.add("(TF\\d\\d\\d)(\\d\\d)"); // Teaching facilities 5 digit style } @Override public void resolve() { if (computerName == null) { throw new InvalidComputerNameException("The computer name has not been provided via a recognisable method.\nTry setting the CLIENTNAME environment variable, or passing the name as an argument when starting the application."); } for (String labRegex : regexes) { Matcher matcher = Pattern.compile(labRegex).matcher(computerName); if(matcher.matches()) { this.labName = matcher.group(1); this.machineId = matcher.group(2); return; } } throw new InvalidComputerNameException("The computer name '" + computerName + "' does not match a recognised lab!"); // this.labName = nameBits[0]; // this.machineId = nameBits[1]; } @Override public String getComputerName() { return this.computerName; } @Override public String getLabName() { return this.labName; } @Override public String getMachineId() { return this.machineId; } @Override public String toString() { return "OtagoComputerNameResolver{" + "computerName=" + computerName + ", labName=" + labName + ", machineId=" + machineId + '}'; } } package discovery.computername; import java.util.List; import java.util.ArrayList; import java.util.regex.Matcher; import java.util.regex.Pattern; /** * @author Mark */ public final class OtagoComputerNameResolver implements ComputerNameResolver { private final String computerName; private String labName; private String machineId; private List<String> regexes = new ArrayList<String>(); /** * <p> * Otago University lab machines usually have a COMPUTERNAME environment * variable in the form "labname-machineId", eg SB316-23.</p> * * <p> * If the name parameter is set then use that, otherwise use the envVar * parameter to get the name from an environment variable.</p> * * @param name the computer name to use (or null). * @param envVar the environment variable to use if name is not set. * */ public OtagoComputerNameResolver(final String name, final String envVar) { super(); if (name == null) { computerName = System.getenv(envVar); } else { computerName = name; } regexes.add("(SB\\d\\d\\d)-(\\d\\d)"); // SoB old style regexes.add("(SB\\d\\d\\d)(\\d\\d)"); // SoB incompetent-tech style regexes.add("(TF\\d\\d)(\\d\\d)"); // Teaching facilities 4 digit style regexes.add("(TF\\d\\d\\d)(\\d\\d)"); // Teaching facilities 5 digit style } @Override public void resolve() { if (computerName == null) { throw new InvalidComputerNameException("The computer name has not been provided via a recognisable method.\nTry setting the CLIENTNAME environment variable, or passing the name as an argument when starting the application."); } for (String labRegex : regexes) { Matcher matcher = Pattern.compile(labRegex).matcher(computerName); if(matcher.matches()) { this.labName = matcher.group(1); this.machineId = matcher.group(2); return; } } throw new InvalidComputerNameException("The computer name '" + computerName + "' does not match a recognised lab!"); // this.labName = nameBits[0]; // this.machineId = nameBits[1]; } @Override public String getComputerName() { return this.computerName; } @Override public String getLabName() { return this.labName; } @Override public String getMachineId() { return this.machineId; } }

Ignore Space Show notes View src/discovery/jms/ServiceLocator.java 0 → 100644
package discovery.jms; import java.util.Collection; import server.jms.JmsConnection; /** * * @author Mark */ public class ServiceLocator { public Collection<String> getActiveServers() { return new JmsConnection().peekAll("active_servers"); } }

Ignore Space Show notes View src/gui/processors/TutorLabelProcessor.java

package gui.processors; import clients.StudentClient; import gui.QueuePanel; import java.awt.Component; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.util.logging.Logger; import javax.swing.JLabel; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import network.MessageGenerator; import network.sockets.RequestSender; /** * * @author Mark */ public class TutorLabelProcessor extends RequestProcessor { private static final Logger LOG = Logger.getLogger(StudentClient.class.getName()); private final String ip; public TutorLabelProcessor(QueuePanel helpPanel, QueuePanel markingPanel, final String ip) { super(helpPanel, markingPanel); this.ip = ip; } @Override public final MouseAdapter getMouseAdapter() { return new MouseAdapter() { @Override public void mousePressed(final MouseEvent e) { super.mousePressed(e); final JLabel label = (JLabel) e.getSource(); final String machine = label.getText(); Status status = getStatus(new Integer(machine)); if (status == Status.BOTH) { final JPopupMenu menu = new JPopupMenu(); final JMenuItem cancelHelp = new JMenuItem("Cancel Help"); cancelHelp.addActionListener(new ActionListener() { @Override public void actionPerformed(final ActionEvent e) { sendCancelHelp(machine); } }); final JMenuItem cancelMarking = new JMenuItem("Cancel Marking"); cancelMarking.addActionListener(new ActionListener() { @Override public void actionPerformed(final ActionEvent e) { sendCancelMarking(machine); } }); menu.add(cancelHelp); menu.add(cancelMarking); menu.show((Component) e.getSource(), e.getX(), e.getY()); } else if (status == Status.HELP) { sendCancelHelp(machine); } else if (status == Status.MARKING) { sendCancelMarking(machine); } } }; } public void sendCancelHelp(String id) { new RequestSender(ip).sendRequest(new MessageGenerator().cancelHelp(id)); } public void sendCancelMarking(String id) { new RequestSender(ip).sendRequest(new MessageGenerator().cancelMarking(id)); } } package gui.processors; import clients.StudentClient; import gui.QueuePanel; import java.awt.Component; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.util.logging.Logger; import javax.swing.JLabel; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import network.MessageGenerator; import network.RequestSender; /** * * @author Mark */ public class TutorLabelProcessor extends RequestProcessor { private static final Logger LOG = Logger.getLogger(StudentClient.class.getName()); private final String ip; public TutorLabelProcessor(QueuePanel helpPanel, QueuePanel markingPanel, final String ip) { super(helpPanel, markingPanel); this.ip = ip; } @Override public final MouseAdapter getMouseAdapter() { return new MouseAdapter() { @Override public void mousePressed(final MouseEvent e) { super.mousePressed(e); final JLabel label = (JLabel) e.getSource(); final String machine = label.getText(); Status status = getStatus(new Integer(machine)); if (status == Status.BOTH) { final JPopupMenu menu = new JPopupMenu(); final JMenuItem cancelHelp = new JMenuItem("Cancel Help"); cancelHelp.addActionListener(new ActionListener() { @Override public void actionPerformed(final ActionEvent e) { sendCancelHelp(machine); } }); final JMenuItem cancelMarking = new JMenuItem("Cancel Marking"); cancelMarking.addActionListener(new ActionListener() { @Override public void actionPerformed(final ActionEvent e) { sendCancelMarking(machine); } }); menu.add(cancelHelp); menu.add(cancelMarking); menu.show((Component) e.getSource(), e.getX(), e.getY()); } else if (status == Status.HELP) { sendCancelHelp(machine); } else if (status == Status.MARKING) { sendCancelMarking(machine); } } }; } public void sendCancelHelp(String id) { new RequestSender(ip).sendRequest(new MessageGenerator().cancelHelp(id)); } public void sendCancelMarking(String id) { new RequestSender(ip).sendRequest(new MessageGenerator().cancelMarking(id)); } }

Show notes View src/network/RequestSender.java 100644 → 0

package network; import constants.Constants; import java.io.InputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.util.logging.Level; import java.util.logging.Logger; /** * * @author Mark */ public class RequestSender { private static final Logger LOG = Logger.getLogger(RequestSender.class.getName()); private final String destinationIp; private final MessageGenerator messageGenerator = new MessageGenerator(); public RequestSender(final String destinationIp) { this.destinationIp = destinationIp; } public void sendRequest(final String request) { try { final Socket socket = new Socket(destinationIp, Constants.PORT); final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); writer.println(request); writer.close(); socket.close(); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } // @SuppressWarnings({"rawtypes", "unchecked"}) // public Collection<Integer> requestQueue() { // try { // final Socket socket = new Socket(destinationIp, Constants.PORT); // final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); // writer.println(messageGenerator.requestQueue()); // writer.flush(); // final ObjectInputStream ois = new ObjectInputStream(socket.getInputStream()); // final Collection<Integer> response = (Collection<Integer>) ois.readObject(); // writer.close(); // ois.close(); // socket.close(); // return response; // } catch (Exception ex) { // LOG.log(Level.SEVERE, null, ex); // } // return Collections.EMPTY_SET; // } @SuppressWarnings({"rawtypes", "unchecked"}) public Socket registerTutorClient() { try { final Socket socket = new Socket(destinationIp, Constants.PORT); final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); writer.println(messageGenerator.registerTutorClient()); writer.flush(); return socket; } catch (Exception ex) { LOG.log(Level.SEVERE, "Error registering tutor client", ex); } return null; } }

Ignore Space Show notes View src/network/jms/RequestSender.java 0 → 100644

package network.jms; import constants.Constants; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.util.logging.Level; import java.util.logging.Logger; import network.MessageGenerator; /** * * @author Mark */ public class RequestSender { private static final Logger LOG = Logger.getLogger(RequestSender.class.getName()); private final MessageGenerator messageGenerator = new MessageGenerator(); private final String labName; private final String machineId; public RequestSender(final String labName, String machineId) { this.labName = labName; this.machineId = machineId; } public void sendRequest(final String request) { // try { // final Socket socket = new Socket(destinationIp, Constants.PORT); // final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); // writer.println(request); // writer.close(); // socket.close(); // } catch (Exception ex) { // LOG.log(Level.SEVERE, null, ex); // } } // @SuppressWarnings({"rawtypes", "unchecked"}) // public Collection<Integer> requestQueue() { // try { // final Socket socket = new Socket(destinationIp, Constants.PORT); // final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); // writer.println(messageGenerator.requestQueue()); // writer.flush(); // final ObjectInputStream ois = new ObjectInputStream(socket.getInputStream()); // final Collection<Integer> response = (Collection<Integer>) ois.readObject(); // writer.close(); // ois.close(); // socket.close(); // return response; // } catch (Exception ex) { // LOG.log(Level.SEVERE, null, ex); // } // return Collections.EMPTY_SET; // } @SuppressWarnings({"rawtypes", "unchecked"}) public Socket registerTutorClient() { // try { // final Socket socket = new Socket(destinationIp, Constants.PORT); // final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); // // writer.println(messageGenerator.registerTutorClient()); // writer.flush(); // // return socket; // } catch (Exception ex) { // LOG.log(Level.SEVERE, "Error registering tutor client", ex); // } return null; } }

Ignore Space Show notes View src/network/sockets/RequestSender.java 0 → 100644

package network.sockets; import constants.Constants; import java.io.InputStream; import java.io.OutputStreamWriter; import java.io.PrintWriter; import java.net.Socket; import java.util.logging.Level; import java.util.logging.Logger; import network.MessageGenerator; /** * * @author Mark */ public class RequestSender { private static final Logger LOG = Logger.getLogger(RequestSender.class.getName()); private final String destinationIp; private final MessageGenerator messageGenerator = new MessageGenerator(); public RequestSender(final String destinationIp) { this.destinationIp = destinationIp; } public void sendRequest(final String request) { try { final Socket socket = new Socket(destinationIp, Constants.PORT); final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); writer.println(request); writer.close(); socket.close(); } catch (Exception ex) { LOG.log(Level.SEVERE, null, ex); } } // @SuppressWarnings({"rawtypes", "unchecked"}) // public Collection<Integer> requestQueue() { // try { // final Socket socket = new Socket(destinationIp, Constants.PORT); // final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); // writer.println(messageGenerator.requestQueue()); // writer.flush(); // final ObjectInputStream ois = new ObjectInputStream(socket.getInputStream()); // final Collection<Integer> response = (Collection<Integer>) ois.readObject(); // writer.close(); // ois.close(); // socket.close(); // return response; // } catch (Exception ex) { // LOG.log(Level.SEVERE, null, ex); // } // return Collections.EMPTY_SET; // } @SuppressWarnings({"rawtypes", "unchecked"}) public Socket registerTutorClient() { try { final Socket socket = new Socket(destinationIp, Constants.PORT); final PrintWriter writer = new PrintWriter(new OutputStreamWriter(socket.getOutputStream())); writer.println(messageGenerator.registerTutorClient()); writer.flush(); return socket; } catch (Exception ex) { LOG.log(Level.SEVERE, "Error registering tutor client", ex); } return null; } }

Ignore Space Show notes View src/server/jms/JmsConnection.java 0 → 100644

package server.jms; import java.util.Collection; import java.util.Enumeration; import java.util.TreeSet; import java.util.logging.Level; import java.util.logging.Logger; import javax.jms.Connection; import javax.jms.JMSException; import javax.jms.QueueBrowser; import javax.jms.Session; import javax.jms.TextMessage; import org.apache.activemq.ActiveMQConnectionFactory; /** * * @author Mark */ public class JmsConnection { private Connection connection; private Session session; public JmsConnection() { try { connection = new ActiveMQConnectionFactory().createConnection(); connection.start(); session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); } catch (JMSException ex) { Logger.getLogger(JmsConnection.class.getName()).log(Level.SEVERE, null, ex); } } public Collection<String> peekAll(String queueName) { Collection<String> messages = new TreeSet<String>(); try { QueueBrowser serverBrowser = session.createBrowser(session.createQueue(queueName)); Enumeration enumeration = serverBrowser.getEnumeration(); while(enumeration.hasMoreElements()) { String server = ((TextMessage)enumeration.nextElement()).getText(); messages.add(server); } } catch (JMSException ex) { Logger.getLogger(JmsConnection.class.getName()).log(Level.SEVERE, null, ex); } return messages; } }

Ignore Space Show notes View tests/Calm.java

import network.MessageGenerator; import network.sockets.RequestSender; /** * Simulates an entire lab canceling their request at the same time. * * Tests threading and queue overflow. * */ public class Calm { private Calm() { } public static void main(final String[] args) { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); // using 2 to 30 since those are numbers that all lab layouts have for (int i = 2; i <= 31; i++) { final int x = i; new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.cancelHelp(String.valueOf(x))); } }).start(); } } } import network.MessageGenerator; import network.RequestSender; /** * Simulates an entire lab canceling their request at the same time. * * Tests threading and queue overflow. * */ public class Calm { private Calm() { } public static void main(final String[] args) { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); // using 2 to 30 since those are numbers that all lab layouts have for (int i = 2; i <= 31; i++) { final int x = i; new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.cancelHelp(String.valueOf(x))); } }).start(); } } }

Ignore Space Show notes View tests/Panic.java

import network.MessageGenerator; import network.sockets.RequestSender; /** * Simulates an entire lab requesting help at the same time. * * Tests threading and queue overflow. * */ public class Panic { private Panic() { } public static void main(final String[] args) { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); // using 2 to 30 since those are numbers that all lab layouts have for (int i = 2; i <= 31; i++) { final int x = i; new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.requestHelp(String.valueOf(x))); } }).start(); } } } import network.MessageGenerator; import network.RequestSender; /** * Simulates an entire lab requesting help at the same time. * * Tests threading and queue overflow. * */ public class Panic { private Panic() { } public static void main(final String[] args) { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); // using 2 to 30 since those are numbers that all lab layouts have for (int i = 2; i <= 31; i++) { final int x = i; new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.requestHelp(String.valueOf(x))); } }).start(); } } }

Ignore Space Show notes View tests/RequestTest.java

import java.io.IOException; import network.MessageGenerator; import network.sockets.RequestSender; /** * Tests a individual requests. * * @author mark */ public class RequestTest { public static void main(String[] args) throws IOException { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); requestSender.sendRequest(generator.requestHelp("13")); requestSender.sendRequest(generator.requestMarking("23")); } } import java.io.IOException; import network.MessageGenerator; import network.RequestSender; /** * Tests a individual requests. * * @author mark */ public class RequestTest { public static void main(String[] args) throws IOException { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); requestSender.sendRequest(generator.requestHelp("13")); requestSender.sendRequest(generator.requestMarking("23")); } }

Ignore Space Show notes View tests/ServerPeeker.java 0 → 100644
import java.util.Collection; import server.jms.JmsConnection; /** * * @author Mark */ public class ServerPeeker { public static void main(String[] args) { Collection<String> availableServers = new JmsConnection().peekAll("active_servers"); System.out.println(availableServers); } }

Ignore Space Show notes View tests/StressTest.java

import java.util.ArrayList; import java.util.List; import network.MessageGenerator; import network.sockets.RequestSender; /** * Simulates everyone toggling their help status at the same time. * * * Tests concurrency, and ability to handle load. * */ public class StressTest { private StressTest() { } public static void main(final String[] args) throws InterruptedException { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); List<Thread> threads = new ArrayList<Thread>(); for (int i = 0; i < 50; i++) { // using 2 to 30 since those are numbers that all lab layouts have for (int j = 2; j <= 31; j++) { final int x = j; Thread t = new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.requestHelp(String.valueOf(x))); } }); t.start(); threads.add(t); } for (Thread thread : threads) { thread.join(); } // give server a chance to sort things out, and so we can visually examine the map Thread.sleep(250); for (int j = 2; j <= 31; j++) { final int x = j; new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.cancelHelp(String.valueOf(x))); } }).start(); } // give server a chance to sort things out, and so we can visually examine the map Thread.sleep(250); } } } import java.util.ArrayList; import java.util.List; import network.MessageGenerator; import network.RequestSender; /** * Simulates everyone toggling their help status at the same time. * * * Tests concurrency, and ability to handle load. * */ public class StressTest { private StressTest() { } public static void main(final String[] args) throws InterruptedException { final RequestSender requestSender = new RequestSender("127.0.0.1"); final MessageGenerator generator = new MessageGenerator(); List<Thread> threads = new ArrayList<Thread>(); for (int i = 0; i < 50; i++) { // using 2 to 30 since those are numbers that all lab layouts have for (int j = 2; j <= 31; j++) { final int x = j; Thread t = new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.requestHelp(String.valueOf(x))); } }); t.start(); threads.add(t); } for (Thread thread : threads) { thread.join(); } // give server a chance to sort things out, and so we can visually examine the map Thread.sleep(250); for (int j = 2; j <= 31; j++) { final int x = j; new Thread(new Runnable() { public void run() { requestSender.sendRequest(generator.cancelHelp(String.valueOf(x))); } }).start(); } // give server a chance to sort things out, and so we can visually examine the map Thread.sleep(250); } } }

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