Various bug fixes

- Fixed bug where an invalid port number would crash the program
- Closed the stage before cleaning up resources. This speeds up closing the app.
- Added error handling for when the client looses connection to the server.

Tags: #story[1281]

src/main/java/seng302/gameServer/MessageFactory.java

@@ -77,9 +77,9 @@ public class MessageFactory {
     }
 
     public static void updateBoats(List<ServerYacht> yachts) {
-        for (ServerYacht serverYacht : yachts) {
-            System.out.println(serverYacht);
-        }
+//        for (ServerYacht serverYacht : yachts) {
+//            System.out.println(serverYacht);
+//        }
         xmlGenerator.getRace().setBoats(yachts);
         String xmlStr = xmlGenerator.getBoatsAsXml();
         MessageFactory.boats = new XMLMessage(xmlStr, XMLMessageSubType.BOAT, xmlStr.length());

src/main/java/seng302/gameServer/ServerAdvertiser.java

@@ -1,5 +1,7 @@
 package seng302.gameServer;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import seng302.discoveryServer.DiscoveryServerClient;
 import seng302.discoveryServer.util.ServerListing;
 
@@ -38,6 +40,7 @@ public class ServerAdvertiser {
     private DiscoveryServerClient repositoryClient;
 
     private Hashtable<String ,String> props;
+    private Logger logger = LoggerFactory.getLogger(ServerAdvertiser.class);
 
     private ServerAdvertiser() throws IOException{
         jmdnsInstance = JmDNS.create(InetAddress.getByName(getLocalHostIp()));
@@ -128,7 +131,7 @@ public class ServerAdvertiser {
                     try {
                         jmdnsInstance.registerService(serviceInfo);
                     } catch (IOException e) {
-                        System.out.println("Failed");
+                        logger.warn("Failed to register service info");
                     }
                 }
             }, 0);

src/main/java/seng302/utilities/StreamParser.java

@@ -136,7 +136,6 @@ public class StreamParser {
         long messageLength = bytesToLong(Arrays.copyOfRange(payload, 12, 14));
         String xmlMessage = new String(
             (Arrays.copyOfRange(payload, 14, (int) (14 + messageLength)))).trim();
-        System.out.println(xmlMessage);
         //Create XML document Object
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         DocumentBuilder db;

src/main/java/seng302/utilities/XMLParser.java

@@ -1,6 +1,7 @@
 package seng302.utilities;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -380,7 +381,7 @@ public class XMLParser {
     /**
      * This ungodly combination of existing methods and code blocks parses a race definition file.
      * Look upon it and despair.
-     * @param url the location of the race def file
+     * @param url The input file path
      * @param serverName the name of the server
      * @param repetitions the repetitions of a segment of the race def file.
      * @param maxPlayers max number of players. uses the default race max if null or greater than the actual max.
@@ -388,14 +389,14 @@ public class XMLParser {
      * @return a pair which contains regatta string, race string as key, value pair.
      */
     public static Pair<RegattaXMLTemplate, RaceXMLTemplate> parseRaceDef(
-        String url, String serverName, Integer repetitions, Integer maxPlayers, Boolean tokensEnabled
+            String url, String serverName, Integer repetitions, Integer maxPlayers, Boolean tokensEnabled
     ) {
         DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
         DocumentBuilder db;
         Document doc = null;
         try {
             db = dbf.newDocumentBuilder();
-            doc = db.parse(url);
+            doc = db.parse(XMLParser.class.getResourceAsStream(url));
         } catch (ParserConfigurationException | IOException | SAXException e) {
             e.printStackTrace();
         }

src/main/java/seng302/visualiser/ClientToServerThread.java

@@ -57,6 +57,11 @@ public class ClientToServerThread implements Runnable {
         void notifyDisconnection(String message);
     }
 
+    @FunctionalInterface
+    public interface ConnectionErrorListener {
+        void notifyConnectionError(String message);
+    }
+
     private class ByteReadException extends Exception {
         private ByteReadException(String message) {
             super(message);
@@ -66,6 +71,7 @@ public class ClientToServerThread implements Runnable {
     private Queue<StreamPacket> streamPackets = new ConcurrentLinkedQueue<>();
     private List<ClientSocketListener> listeners = new ArrayList<>();
     private List<DisconnectedFromHostListener> disconnectionListeners = new ArrayList<>();
+    private ConnectionErrorListener connectionErrorListener = null;
     private Thread thread;
 
     private Socket socket;
@@ -183,6 +189,18 @@ public class ClientToServerThread implements Runnable {
         }
     }
 
+    private void handleConnectionError(String message){
+        if (connectionErrorListener != null){
+            connectionErrorListener.notifyConnectionError(message);
+        }
+
+        try {
+            this.socket.close();
+        } catch (IOException e) {
+            logger.error("Couldn't close socket");
+        }
+    }
+
     /**
      * Sends a request to the server asking for a source ID
      */
@@ -212,6 +230,7 @@ public class ClientToServerThread implements Runnable {
             return;
         }
 
+
         logger.error("Server Denied Connection, Exiting");
 
         final String alertErrorText;
@@ -222,6 +241,7 @@ public class ClientToServerThread implements Runnable {
         else{
             alertErrorText = "Could not connect to server";
         }
+        handleConnectionError("Server no longer available.");
         notifyDisconnectListeners(alertErrorText);
         closeSocket();
     }
@@ -351,6 +371,12 @@ public class ClientToServerThread implements Runnable {
         }
     }
 
+    public void setConnectionErrorListener(ConnectionErrorListener listener){
+        synchronized (this){
+            connectionErrorListener = listener;
+        }
+    }
+
     private int readByte() throws ByteReadException {
         int currentByte = -1;
         try {
@@ -365,6 +391,7 @@ public class ClientToServerThread implements Runnable {
             notifyDisconnectListeners("Cannot read from server.");
             closeSocket();
             logger.warn("InputStream reach end of stream", 1);
+            handleConnectionError("Could not connect to server. Server is no longer available.");
         }
         return currentByte;
     }

src/main/java/seng302/visualiser/GameClient.java

@@ -119,13 +119,23 @@ public class GameClient {
             ViewManager.getInstance().setProperty("serverName", regattaData.getRegattaName());
             ViewManager.getInstance().setProperty("mapName", regattaData.getCourseName());
 
+            getServerThread().setConnectionErrorListener((eMessage) -> {
+                ViewManager.getInstance().showErrorSnackBar(eMessage);
+                destroyClientToServerThread();
+            });
+
             this.lobbyController = ViewManager.getInstance().goToLobby(true);
 
         } catch (IOException ioe) {
-            ViewManager.getInstance().showErrorSnackBar("Unable to find server");
+            ViewManager.getInstance().showErrorSnackBar("There are no servers currently available.");
         }
     }
 
+    private void destroyClientToServerThread() {
+        socketThread.closeSocket();
+        socketThread = null;
+    }
+
     /**
      * Connect to a game as the host at the given address and starts the visualiser.
      * @param ipAddress IP to connect to.
@@ -224,7 +234,6 @@ public class GameClient {
                     break;
 
                 case RACE_XML:
-                    System.out.println("HEY I GOT A RACE MANG AND I AM CLIENT " + ((Boolean) (server==null)).toString());
                     RaceXMLData raceXMLData = XMLParser.parseRace(
                         StreamParser.extractXmlMessage(packet)
                     );

src/main/java/seng302/visualiser/MapMaker.java

@@ -4,6 +4,7 @@ import java.io.File;
 import java.io.IOException;
 import java.io.StringReader;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import javafx.scene.Node;
 import javafx.util.Pair;
@@ -34,6 +35,8 @@ public class MapMaker {
     private int index = 0;
     private XMLGenerator xmlGenerator = new XMLGenerator();
 
+    private List<String> maps = new ArrayList<>(Arrays.asList("default.xml", "horseshoe.xml"));
+
     public static MapMaker getInstance() {
         if (instance == null) {
             instance = new MapMaker();
@@ -42,46 +45,49 @@ public class MapMaker {
     }
 
     private MapMaker() {
-        File dir = new File(MapMaker.class.getResource("/maps/").getPath());
-        File[] directoryListing = dir.listFiles();
-        if (directoryListing != null) {
-            for (File child : directoryListing) {
-                Pair<RegattaXMLTemplate, RaceXMLTemplate> regattaRace = XMLParser.parseRaceDef(
-                    child.getAbsolutePath(), "", 1, null, false
-                );
-                filePaths.add(child.getAbsolutePath());
-                RegattaXMLTemplate regattaTemplate = regattaRace.getKey();
-                regattas.add(new RegattaXMLData(
+        for (String mapPath : maps){
+            String path = ("/maps/" + mapPath);
+
+            Pair<RegattaXMLTemplate, RaceXMLTemplate> regattaRace = XMLParser.parseRaceDef(
+                    path, "", 1, null, false
+            );
+
+            RegattaXMLTemplate regattaTemplate = regattaRace.getKey();
+
+            filePaths.add(path);
+
+            regattas.add(new RegattaXMLData(
                     regattaTemplate.getRegattaId(),
                     regattaTemplate.getName(),
                     regattaTemplate.getCourseName(),
                     regattaTemplate.getLatitude(),
                     regattaTemplate.getLongitude(),
                     regattaTemplate.getUtcOffset()
-                ));
+            ));
 
-                RaceXMLTemplate raceTemplate = regattaRace.getValue();
-                xmlGenerator.setRaceTemplate(raceTemplate);
-                DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
-                DocumentBuilder db;
-                Document doc = null;
-                try {
-                    db = dbf.newDocumentBuilder();
-                    doc = db.parse(new InputSource(new StringReader(xmlGenerator.getRaceAsXml())));
-                } catch (ParserConfigurationException | IOException | SAXException e) {
-                    e.printStackTrace();
-                }
+            RaceXMLTemplate raceTemplate = regattaRace.getValue();
+            xmlGenerator.setRaceTemplate(raceTemplate);
+            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+            DocumentBuilder db;
+            Document doc = null;
+            try {
+                db = dbf.newDocumentBuilder();
+                doc = db.parse(new InputSource(new StringReader(xmlGenerator.getRaceAsXml())));
+            } catch (ParserConfigurationException | IOException | SAXException e) {
+                e.printStackTrace();
+            }
 
-                RaceXMLData race = XMLParser.parseRace(doc);
-                maxPlayers.add(XMLParser.getMaxPlayers(doc));
+            RaceXMLData race = XMLParser.parseRace(doc);
+            maxPlayers.add(XMLParser.getMaxPlayers(doc));
 
-                mapPreviews.add(new MapPreview(
+            mapPreviews.add(new MapPreview(
                     new ArrayList<>(race.getCompoundMarks().values()),
                     race.getMarkSequence(), race.getCourseLimit()
-                ));
-                races.add(race);
-            }
+            ));
+
+            races.add(race);
         }
+
     }
 
     public void next() {

src/main/java/seng302/visualiser/controllers/ViewManager.java

@@ -272,6 +272,8 @@ public class ViewManager {
     }
 
     private void closeAll() {
+        if (stage!= null) stage.close();
+
         try {
             ServerAdvertiser.getInstance().unregister();
         } catch (IOException e1) {

src/main/java/seng302/visualiser/controllers/dialogs/DirectConnectController.java

@@ -50,6 +50,15 @@ public class DirectConnectController implements Initializable {
      */
     private void connectToServer() {
         //TODO fix port number validation
+
+        try{
+            Integer.parseInt(portNumber.getText());
+        }
+        catch (NumberFormatException e){
+            ViewManager.getInstance().showErrorSnackBar("You need to enter a valid port number");
+            return;
+        }
+
         ViewManager.getInstance().getGameClient()
                 .runAsClient(serverAddress.getText(), Integer.parseInt(portNumber.getText()));
     }