Init ServerManager

src/main/java/org/toop/Main.java

@@ -2,53 +2,65 @@ package org.toop;
 
 import org.toop.eventbus.Events;
 import org.toop.eventbus.GlobalEventBus;
-import org.toop.server.Server;
+import org.toop.server.ServerConnection;
+import org.toop.server.ServerManager;
 import org.toop.server.backend.Testsss;
 import org.toop.server.backend.TcpServer;
 
 import org.apache.logging.log4j.Logger;
 import org.apache.logging.log4j.LogManager;
 
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.ExecutionException;
+
 public class Main {
     private static final Logger logger = LogManager.getLogger(Main.class);
 
-    public static void main(String[] args) {
-
-        if (!initEvents()) {
-            throw new RuntimeException("A event could not be initialized");
-        }
+    public static void main(String[] args) throws ExecutionException, InterruptedException {
 
         TcpServer server = new TcpServer(5001);
         Thread serverThread = new Thread(server);
         serverThread.start();
-        Server.start("127.0.0.1", "5001");
-        // Testsss.start(""); // Used for testing server.
+
+        ServerManager serverManager = new ServerManager();
+
+        CompletableFuture<String> future = new CompletableFuture<>();
+        GlobalEventBus.post(new Events.ServerEvents.StartConnectionRequest("127.0.0.1", "5001", future));
+        String serverId = future.get();
+        logger.info("Server ID: " + serverId);
+
+        CompletableFuture<String> future2 = new CompletableFuture<>();
+        GlobalEventBus.post(new Events.ServerEvents.StartConnectionRequest("127.0.0.2", "5002", future2));
+        String serverId2 = future2.get();
+        logger.info("Server ID: " + serverId2);
+
+        CompletableFuture<String> future3 = new CompletableFuture<>();
+        GlobalEventBus.post(new Events.ServerEvents.StartConnectionRequest("127.0.0.3", "5003", future3));
+        String serverId3 = future3.get();
+        logger.info("Server ID: " + serverId3);
+
+        CompletableFuture<String> future4 = new CompletableFuture<>();
+        GlobalEventBus.post(new Events.ServerEvents.StartConnectionRequest("127.0.0.4", "5004", future4));
+        String serverId4 = future4.get();
+        logger.info("Server ID: " + serverId4);
+
+        CompletableFuture<String> future5 = new CompletableFuture<>();
+        GlobalEventBus.post(new Events.ServerEvents.StartConnectionRequest("127.0.0.5", "5005", future5));
+        String serverId5 = future5.get();
+        logger.info("Server ID: " + serverId5);
+
+//        GlobalEventBus.post(new Events.ServerEvents.StartConnection("127.0.0.1", "5001"));
+
+
+//        Server.startNew("127.0.0.1", "5001");
+//        Testsss.start(""); // Used for testing server.
         Window.start("");
 
+        CompletableFuture<String> future6 = new CompletableFuture<>();
+        GlobalEventBus.post(new Events.ServerEvents.RequestsAllConnections(future6));
+        String serverConnections = future6.get();
+        logger.info("Running connections: {}", serverConnections);
+
     }
 
-    /**
-     * Returns false if any event could not be initialized.
-     */
-     private static boolean initEvents() {
-        try {
-
-            GlobalEventBus.subscribeAndRegister(Events.ServerEvents.OnChangingServerIp.class,
-                    event ->
-                    logger.info("Changing server ip to {}", event.ip())
-            );
-
-            GlobalEventBus.subscribeAndRegister(Events.ServerEvents.OnChangingServerPort.class,
-                    event ->
-                    logger.info("Changing server port to {}", event.port())
-            );
-
-            return true;
-        }
-        catch (Exception err) {
-            logger.info("{}", err.getMessage());
-            return false;
-        }
-     }
-
 }

src/main/java/org/toop/eventbus/Events.java

@@ -1,9 +1,12 @@
 package org.toop.eventbus;
 
-import org.toop.server.Server;
+import org.toop.server.ServerConnection;
 
 import java.lang.reflect.Constructor;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.CompletableFuture;
 
 /**
  * Events that are used in the GlobalEventBus class.
@@ -74,10 +77,42 @@ public class Events implements IEvents {
 
     public static class ServerEvents {
 
+        public record RequestsAllConnections(CompletableFuture<String> future) {}
+
+        public record ForceCloseAllConnections() {}
+
+        /**
+         *
+         * Triggers starting a server connection.
+         *
+         * @param ip
+         * @param port
+         */
+        public record StartConnection(String ip, String port) {}
+
+        /**
+         * Triggers starting a server connection, returns a future.
+         * WARNING: This is a blocking operation.
+         *
+         * @param ip
+         * @param port
+         * @param future
+         */
+        public record StartConnectionRequest(String ip, String port, CompletableFuture<String> future) {}
+
+        /**
+         * Triggers when a connection to a server is established.
+         *
+         * @param connectionId
+         * @param ip
+         * @param port
+         */
+        public record ConnectionEstablished(Object connectionId, String ip, String port) {}
+
         /**
          * Triggers sending a command to a server.
          */
-        public record command(String command, String... args) {}
+        public record Command(Object connectionId, String command, String... args) { }
 
         /**
          * Triggers when a command is sent to a server.
@@ -102,12 +137,19 @@ public class Events implements IEvents {
         /**
          * Triggers reconnecting to previous address.
          */
-        public record Reconnect() {}
+        public record Reconnect(Object connectionId) {}
 
         /**
          * Triggers changing connection to a new address.
          */
-        public record ChangeConnection(String ip, String port) { }
+        public record ChangeConnection(Object connectionId, String ip, String port) {}
+
+        /**
+         * Triggers when the server couldn't connect to the desired address.
+         */
+        public record CouldNotConnect(Object connectionId) {}
+
+        public record ClosedConnection() {}
 
     }
 

src/main/java/org/toop/eventbus/GlobalEventBus.java

@@ -8,26 +8,40 @@ import java.util.function.Consumer;
 /**
  * A singleton Event Bus to be used for creating, triggering and activating events.
  */
-public enum GlobalEventBus {
-    /**
-     * The instance of the Event Bus.
-     */
-    INSTANCE;
+public class GlobalEventBus {
 
     /**
      * Singleton event bus.
      */
-    private final EventBus eventBus = new EventBus("global-bus");
+    private static EventBus eventBus = new EventBus("global-bus");
+
+    private GlobalEventBus() {}
 
     /**
      * Wraps a Consumer into a Guava @Subscribe-compatible listener.
      *
      * @return Singleton Event Bus
      */
-    public EventBus get() {
+    public static EventBus get() {
         return eventBus;
     }
 
+    /**
+     * ONLY USE FOR TESTING
+     *
+     * @param newBus
+     */
+    public static void set(EventBus newBus) {
+        eventBus = newBus;
+    }
+
+    /**
+     * Reset back to the default global EventBus.
+     */
+    public static void reset() {
+        eventBus = new EventBus("global-bus");
+    }
+
     /**
      * Wraps a Consumer into a Guava @Subscribe-compatible listener.
      * TODO
@@ -39,8 +53,10 @@ public enum GlobalEventBus {
     private static <T> Object subscribe(Class<T> type, Consumer<T> action) {
         return new Object() {
             @Subscribe
-            public void handle(T event) {
-                action.accept(event);
+            public void handle(Object event) {
+                if (type.isInstance(event)) {
+                    action.accept(type.cast(event));
+                }
             }
         };
     }
@@ -73,7 +89,7 @@ public enum GlobalEventBus {
      * @param event The ready event to add to register.
      */
     public static <T> void register(EventMeta<T> event) {
-        GlobalEventBus.INSTANCE.get().register(event.getEvent());
+        GlobalEventBus.get().register(event.getEvent());
         event.setReady(true);
         EventRegistry.markReady(event.getType());
     }
@@ -86,7 +102,7 @@ public enum GlobalEventBus {
     public static <T> void unregister(EventMeta<T> event) {
         EventRegistry.markNotReady(event.getType());
         event.setReady(false);
-        GlobalEventBus.INSTANCE.get().unregister(event.getEvent());
+        GlobalEventBus.get().unregister(event.getEvent());
     }
 
     /**
@@ -106,7 +122,6 @@ public enum GlobalEventBus {
         EventRegistry.storeEvent(eventMeta);
 
         // post to Guava EventBus
-        GlobalEventBus.INSTANCE.get().post(event);
+        GlobalEventBus.get().post(event);
     }
-
 }

src/main/java/org/toop/server/Server.java

@@ -1,285 +0,0 @@
-package org.toop.server;
-
-import org.toop.Main;
-import org.toop.eventbus.Events;
-import org.toop.eventbus.GlobalEventBus;
-import org.toop.server.backend.TcpClient;
-
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-
-import java.io.IOException;
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.LinkedBlockingQueue;
-
-public class Server extends Thread {
-
-    private static final Logger logger = LogManager.getLogger(Main.class);
-
-    public enum ServerBackend {
-        LOCAL,
-        REMOTE,
-    }
-
-    String ip;
-    String port;
-    BlockingQueue<String> commandQueue; // TODO, add a way to close it, for when reconnecting.
-    TcpClient tcpClient;
-    volatile boolean running = false;
-    Thread tcpIn;
-    Thread tcpOut;
-
-    public Server(String set_ip, String set_port) {
-        ip = set_ip;
-        port = set_port;
-        this.initEvents();
-        this.commandQueue = new LinkedBlockingQueue<>();
-        try {
-            this.tcpClient = new TcpClient(this.getIp(), Integer.parseInt(this.getPort()));
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-    }
-
-    public String getIp() {
-        return ip;
-    }
-
-    /**
-     * @param ip The ip to change to.
-     */
-    public void setIp(String ip) {
-
-        this.ip = ip;
-        GlobalEventBus.post(new Events.ServerEvents.OnChangingServerIp(ip));
-
-    }
-
-    public String getPort() {
-        return port;
-    }
-
-
-    /**
-     * @param port The port to change to.
-     */
-    public void setPort(String port) {
-
-        this.port = port;
-        GlobalEventBus.post(new Events.ServerEvents.OnChangingServerPort(port));
-
-    }
-
-    /**
-     *
-     * Sends a command to the server.
-     *
-     * @param command The command to send to the server.
-     * @param args The arguments for the command.
-     */
-    private void sendCommandByString(String command, String... args) {
-
-        if (!ServerCommand.isValid(command)) {
-            logger.error("Invalid command: {}", command);
-            return;
-        }
-
-        if (!running) {
-            logger.warn("Server has been stopped");
-            return;
-        }
-
-        for (int i = 0; i < args.length; i++) {
-            args[i] = args[i].trim();
-            if (args[i].isEmpty()) {
-                throw new IllegalArgumentException("Empty argument"); // TODO: Error handling, just crashes atm.
-            }
-        }
-
-        String[] fullCommand = new String[args.length + 1];
-        fullCommand[0] = command;
-        System.arraycopy(args, 0, fullCommand, 1, args.length);
-        command = String.join(" ", fullCommand);
-
-        this.commandQueue.add(command);
-        logger.info("Command '{}' added to the queue", command);
-
-    }
-
-    @Override
-    public String toString() {
-
-        return String.format(
-                "Server {ip: \"%s\", port: \"%s\"}",
-                ip, port
-        );
-
-    }
-
-    private void initEvents() {
-
-        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.command.class, event
-                -> this.sendCommandByString(event.command(), event.args()));
-        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.Reconnect.class, event
-                -> {
-                    try {
-                        this.reconnect(); // TODO: Terrible error handling and code. Needs cleanup.
-                    } catch (IOException e) {
-                        throw new RuntimeException(e);
-                    } catch (InterruptedException e) {
-                        throw new RuntimeException(e);
-                    }
-                });
-        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.ChangeConnection.class, event
-                -> {
-                    try {
-                        this.connect(event.ip(), event.port()); // TODO: Terrible error handling and code. Needs cleanup.
-                    } catch (IOException e) {
-                        throw new RuntimeException(e);
-                    } catch (InterruptedException e) {
-                        throw new RuntimeException(e);
-                    }
-                });
-
-    }
-
-    private void connection() throws InterruptedException { // TODO: Rename
-
-        sleep(1000); // Just wait, because why not
-
-        this.tcpIn = new Thread(() -> {
-            try {
-                while (this.running) {
-                    String received = this.tcpClient.readLine(); // blocks until a line is available
-                    if (received != null) {
-                        logger.info("Received: '{}'", received);
-                        GlobalEventBus.post(new Events.ServerEvents.ReceivedMessage(received));
-                    } else {
-                        break;
-                    }
-                }
-            } catch (IOException e) {
-                logger.error("Error reading from server", e);
-                try {
-                    this.tcpClient.close();
-                } catch (IOException ex) {
-                    throw new RuntimeException(ex);
-                }
-            }
-        });
-
-        this.tcpOut = new Thread(() -> {
-            try {
-                while (this.running) {
-                    String command = commandQueue.take(); // blocks until a command is available
-                    this.tcpClient.sendMessage(command);
-                    logger.info("Sent command: '{}'", command);
-                }
-            } catch (InterruptedException e) {
-                Thread.currentThread().interrupt();
-            } catch (IOException e) {
-                try {
-                    tcpClient.close();
-                } catch (IOException ex) {
-                    throw new RuntimeException(ex);
-                }
-                throw new RuntimeException(e);
-            }
-        });
-
-        this.tcpIn.start();
-        this.tcpOut.start();
-
-    }
-
-    /**
-     *
-     * Connect to a new server.
-     *
-     * @param ip The ip to connect to.
-     * @param port The port to connect to.
-     * @throws IOException wip
-     * @throws InterruptedException wip
-     */
-    public void connect(String ip, String port) throws IOException, InterruptedException {
-
-        if (running) {
-            this.close();
-        }
-
-        this.ip = ip;
-        this.port = port;
-
-        running = true;
-
-        this.tcpClient = new TcpClient(ip, Integer.parseInt(port));
-        this.connection();
-
-    }
-
-    /**
-     *
-     * Reconnects to previous address.
-     *
-     * @throws IOException wip
-     * @throws InterruptedException wip
-     */
-    public void reconnect() throws IOException, InterruptedException {
-        this.connect(this.ip, this.port);
-    }
-
-    /**
-     *
-     * Close connection to server.
-     *
-     * @throws IOException wip
-     * @throws InterruptedException wip
-     */
-    public void close() throws IOException, InterruptedException {
-
-        this.commandQueue.clear();
-        running = false;
-        // Thread.currentThread().interrupt();
-
-        this.tcpClient.closeSocket();
-
-        this.tcpIn.interrupt();
-        this.tcpOut.interrupt();
-        this.tcpIn.join();
-        this.tcpOut.join();
-
-    }
-
-    /**
-     * DO NOT USE, USE START INSTEAD.
-     */
-    public void run() {
-
-        try {
-            this.reconnect();
-        } catch (IOException e) {
-            throw new RuntimeException(e);
-        } catch (InterruptedException e) {
-            throw new RuntimeException(e);
-        }
-
-    }
-
-    /**
-     *
-     * Starts a server thread.
-     *
-     * @param ip The address of the server to contact.
-     * @param port The port of the server.
-     */
-    public static void start(String ip, String port) {
-
-        try {
-            new Server(ip, port).start();
-        } catch (IllegalArgumentException e) {
-            new Server("127.0.0.1", "5001").start(); // TODO: Doesn't do anything.
-        }
-    }
-
-}
-

src/main/java/org/toop/server/ServerConnection.java

@@ -0,0 +1,227 @@
+package org.toop.server;
+
+import org.toop.Main;
+import org.toop.eventbus.Events;
+import org.toop.eventbus.GlobalEventBus;
+import org.toop.server.backend.TcpClient;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.io.IOException;
+import java.util.concurrent.*;
+
+public final class ServerConnection implements Runnable {
+
+    private static final Logger logger = LogManager.getLogger(Main.class);
+
+    private final BlockingQueue<String> commandQueue = new LinkedBlockingQueue<>();
+    private final ExecutorService executor = Executors.newFixedThreadPool(2);
+
+    String ip;
+    String port;
+    TcpClient tcpClient;
+    volatile boolean running = false;
+
+    public ServerConnection(String ip, String port) {
+        this.ip = ip;
+        this.port = port;
+        this.initEvents();
+    }
+
+    public String getIp() {
+        return this.ip;
+    }
+
+    public String getPort() {
+        return this.port;
+    }
+
+    /**
+     *
+     * Sends a command to the server.
+     *
+     * @param command The command to send to the server.
+     * @param args The arguments for the command.
+     */
+    public void sendCommandByString(String command, String... args) {
+        if (!ServerCommand.isValid(command)) {
+            logger.error("Invalid command: {}", command);
+            return;
+        }
+
+        if (!this.running) {
+            logger.warn("Server has been stopped");
+            return;
+        }
+
+        for (int i = 0; i < args.length; i++) {
+            args[i] = args[i].trim();
+            if (args[i].isEmpty()) {
+                throw new IllegalArgumentException("Empty argument"); // TODO: Error handling, just crashes atm.
+            }
+        }
+
+        String[] fullCommand = new String[args.length + 1];
+        fullCommand[0] = command;
+        System.arraycopy(args, 0, fullCommand, 1, args.length);
+        command = String.join(" ", fullCommand);
+
+        this.commandQueue.add(command);
+        logger.info("Command '{}' added to the queue", command);
+    }
+
+    private void initEvents() {
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.Command.class, event
+                -> this.sendCommandByString(event.command(), event.args()));
+
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.Reconnect.class, event
+                -> {
+                    try {
+                        this.reconnect();
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    }
+        });
+
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.ChangeConnection.class, event
+                -> {
+                    try {
+                        this.connect(event.ip(), event.port());
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    }
+        });
+    }
+
+    private void startWorkers() {
+        running = true;
+        this.executor.submit(this::inputLoop);
+        this.executor.submit(this::outputLoop);
+    }
+
+    private void stopWorkers() {
+        running = false;
+        this.running = false;
+        this.commandQueue.clear();
+
+        if (this.tcpClient != null) {
+            try {
+                this.tcpClient.closeSocket();
+            } catch (IOException e) {
+                logger.warn("Error closing client socket", e);
+            }
+        }
+
+        this.executor.shutdownNow();
+    }
+
+    private void inputLoop() {
+        logger.info("Starting server read");
+        try {
+            while (running) {
+                String received = tcpClient.readLine(); // blocks
+                if (received != null) {
+                    logger.info("Received: '{}'", received);
+                } else {
+                    break;
+                }
+            }
+        } catch (IOException e) {
+            logger.error("Error reading from server", e);
+        }
+    }
+
+    private void outputLoop() {
+        logger.info("Starting server write");
+        try {
+            while (this.running) {
+                String command = this.commandQueue.poll(500, TimeUnit.MILLISECONDS);
+                if (command != null) {
+                    this.tcpClient.sendMessage(command);
+                    logger.info("Sent command: '{}'", command);
+                }
+            }
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+        } catch (IOException e) {
+            logger.error("Error sending command", e);
+        }
+    }
+
+    /**
+     *
+     * Connect to a new server.
+     *
+     * @param ip The ip to connect to.
+     * @param port The port to connect to.
+     * @throws IOException wip
+     * @throws InterruptedException wip
+     */
+    public void connect(String ip, String port) throws IOException {
+        if (this.running) {
+            this.closeConnection();
+        }
+
+        this.ip = ip;
+        this.port = port;
+        this.tcpClient = new TcpClient(ip, Integer.parseInt(port));
+
+        this.startWorkers();
+    }
+
+    /**
+     *
+     * Reconnects to previous address.
+     *
+     * @throws IOException wip
+     */
+    public void reconnect() throws IOException {
+        this.connect(this.ip, this.port);
+    }
+
+    /**
+     *
+     * Close connection to server.
+     *
+     */
+    public void closeConnection() {
+        this.stopWorkers();
+        logger.info("Server connection closed");
+    }
+
+    /**
+     * DO NOT USE, USE START INSTEAD.
+     */
+    @Override
+    public void run() {
+        try {
+            reconnect();
+        } catch (IOException e) {
+            logger.error("Initial connection failed", e);
+        }
+    }
+
+    /**
+     *
+     * Starts a server thread.
+     *
+     * @param ip The address of the server to contact.
+     * @param port The port of the server.
+     */
+    public static ServerConnection startNew(String ip, String port) {
+        ServerConnection serverConnection = new ServerConnection(ip, port);
+        new Thread(serverConnection).start();
+        return serverConnection;
+    }
+
+    @Override
+    public String toString() {
+        return String.format(
+                "Server {ip: \"%s\", port: \"%s\", running: %s}",
+                this.ip, this.port, this.running
+        );
+    }
+
+}
+

src/main/java/org/toop/server/ServerManager.java

@@ -0,0 +1,97 @@
+package org.toop.server;
+
+import org.toop.eventbus.Events;
+import org.toop.eventbus.GlobalEventBus;
+
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class ServerManager {
+
+    private static final Logger logger = LogManager.getLogger(ServerManager.class);
+
+    /**
+     * Map of serverId -> Server instances
+     */
+    private final Map<String, ServerConnection> serverConnections = new ConcurrentHashMap<>();
+
+    public ServerManager() {
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.StartConnectionRequest.class, this::handleStartConnectionRequest);
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.StartConnection.class, this::handleStartConnection);
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.Command.class, this::handleCommand);
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.Reconnect.class, this::handleReconnect);
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.ChangeConnection.class, this::handleChangeConnection);
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.ForceCloseAllConnections.class, _ -> shutdownAll());
+        GlobalEventBus.subscribeAndRegister(Events.ServerEvents.RequestsAllConnections.class, this::getAllConnections);
+    }
+
+    private void handleStartConnectionRequest(Events.ServerEvents.StartConnectionRequest request) {
+        String connectionId = UUID.randomUUID().toString();
+        ServerConnection connection = new ServerConnection(request.ip(), request.port());
+        this.serverConnections.put(connectionId, connection);
+        new Thread(connection, "Connection-" + connectionId).start();
+
+        request.future().complete(connectionId);
+    }
+
+    private void handleStartConnection(Events.ServerEvents.StartConnection event) {
+        String connectionId = UUID.randomUUID().toString();
+        ServerConnection connection = new ServerConnection(event.ip(), event.port());
+        this.serverConnections.put(connectionId, connection);
+        new Thread(connection, "Connection-" + connectionId).start();
+        logger.info("Connected to server {} at {}:{}", connectionId, event.ip(), event.port());
+        GlobalEventBus.post(new Events.ServerEvents.ConnectionEstablished(connectionId, event.ip(), event.port()));
+    }
+
+    private void handleCommand(Events.ServerEvents.Command event) {
+        ServerConnection serverConnection = this.serverConnections.get(event.connectionId());
+        if (serverConnection != null) {
+            serverConnection.sendCommandByString(event.command(), event.args());
+        } else {
+            logger.warn("Server {} not found for command '{}'", event.connectionId(), event.command());
+        }
+    }
+
+    private void handleReconnect(Events.ServerEvents.Reconnect event) {
+        ServerConnection serverConnection = this.serverConnections.get(event.connectionId());
+        if (serverConnection != null) {
+            try {
+                serverConnection.reconnect();
+                logger.info("Server {} reconnected", event.connectionId());
+            } catch (Exception e) {
+                logger.error("Server {} failed to reconnect", event.connectionId(), e);
+                GlobalEventBus.post(new Events.ServerEvents.CouldNotConnect(event.connectionId()));
+            }
+        }
+    }
+
+    private void handleChangeConnection(Events.ServerEvents.ChangeConnection event) {
+        ServerConnection serverConnection = this.serverConnections.get(event.connectionId());
+        if (serverConnection != null) {
+            try {
+                serverConnection.connect(event.ip(), event.port());
+                logger.info("Server {} changed connection to {}:{}", event.connectionId(), event.ip(), event.port());
+            } catch (Exception e) {
+                logger.error("Server {} failed to change connection", event.connectionId(), e);
+                GlobalEventBus.post(new Events.ServerEvents.CouldNotConnect(event.connectionId()));
+            }
+        }
+    }
+
+    private void getAllConnections(Events.ServerEvents.RequestsAllConnections request) {
+        List<ServerConnection> a = new ArrayList<>(this.serverConnections.values());
+        request.future().complete(a.toString());
+    }
+
+    public void shutdownAll() {
+        this.serverConnections.values().forEach(ServerConnection::closeConnection);
+        this.serverConnections.clear();
+        logger.info("All servers shut down");
+    }
+}

src/main/java/org/toop/server/backend/Testsss.java

@@ -7,18 +7,18 @@ public class Testsss extends Thread {
 
     public Testsss() {}
 
-    public void run() {
-        while (true) {
-            try {
-                sleep(100);
-                GlobalEventBus.post(new Events.ServerEvents.command("HELP", "TEST"));
-                sleep(1000);
-                GlobalEventBus.post(new Events.ServerEvents.ChangeConnection("127.0.0.1", "5001"));
-            } catch (InterruptedException e) {
-                throw new RuntimeException(e);
-            }
-        }
-    }
+//    public void run() {
+//        while (true) {
+//            try {
+//                sleep(100);
+//                GlobalEventBus.post(new Events.ServerEvents.command("HELP", "TEST"));
+//                sleep(1000);
+//                GlobalEventBus.post(new Events.ServerEvents.ChangeConnection("127.0.0.1", "5001"));
+//            } catch (InterruptedException e) {
+//                throw new RuntimeException(e);
+//            }
+//        }
+//    }
 
     public static void start(String keepEmpty) {
         new Testsss().start();