Update builder pattern

src/Main.java

-import director.Director;
-import server.ReplicaConnectionService;
 import server.Server;
 import server.ServerBuilder;
 
-import java.io.IOException;
-import java.util.Arrays;
-import java.util.List;
-import java.util.concurrent.Callable;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.Executors;
-import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 public class Main {
-    public static ExecutorService executor;
+    private static final Logger logger = Logger.getLogger(Main.class.getName());
 
     public static void main(String[] args) {
-        int availableProcessors = Runtime.getRuntime().availableProcessors();
-        executor = Executors.newFixedThreadPool(availableProcessors);
-
-        Director director = new Director();
-        ServerBuilder builder = new ServerBuilder(args);
-
-        List<Callable<Void>> tasks = Arrays.asList(
-                () -> {
-                    try {
-                        ReplicaConnectionService service = null;
-                        director.buildReplica(builder, service);
-                    } catch (IOException e) {
-                        throw new RuntimeException(e);
-                    }
-                    return null;
-                },
-                () -> {
-                    try (Server server = builder.build()) {
-                        server.start();
-                    } catch (IOException e) {
-                        throw new RuntimeException(e);
-                    }
-                    return null;
-                }
-        );
-
-        try {
-            executor.invokeAll(tasks);
-        } catch (InterruptedException e) {
-            Thread.currentThread().interrupt();
-            throw new RuntimeException("Task execution was interrupted", e);
-        } finally {
-            shutdownExecutor(executor);
-        }
-    }
-
-    private static void shutdownExecutor(ExecutorService executor) {
-        executor.shutdown();
+        logger.info("Starting application");
         try {
-            if (!executor.awaitTermination(60, TimeUnit.SECONDS)) {
-                executor.shutdownNow();
-                if (!executor.awaitTermination(60, TimeUnit.SECONDS)) {
-                    System.err.println("Executor did not terminate");
-                }
+            ServerBuilder builder = new ServerBuilder(args);
+            try (Server server = builder.build()) {
+                server.start();
             }
-        } catch (InterruptedException e) {
-            executor.shutdownNow();
-            Thread.currentThread().interrupt();
+        } catch (Exception e) {
+            logger.log(Level.SEVERE, "An error occurred", e);
         }
+        logger.info("Application shutdown complete");
     }
-}
+}
\ No newline at end of file

src/server/Server.java

@@ -15,15 +15,26 @@ import java.util.logging.Logger;
 public class Server implements AutoCloseable {
     private static final Logger logger = Logger.getLogger(Server.class.getName());
     private final int PORT;
+    private final String role;
     private final ExecutorService executor;
-    private final StorageManager manager = new StorageManager();
+    private final StorageManager manager;
+    private final ReplicaConnectionService replicaConnectionService;
 
-    public Server(int port) {
+    Server(int port, String role, ReplicaConnectionService replicaConnectionService) {
+        logger.info("Creating Server instance");
         this.PORT = port;
+        this.role = role;
         this.executor = Executors.newVirtualThreadPerTaskExecutor();
+        this.manager = new StorageManager();
+        this.replicaConnectionService = replicaConnectionService;
     }
 
     public void start() {
+        logger.info("Starting server on port " + PORT + " with role " + role);
+        if ("slave".equals(role) && replicaConnectionService != null) {
+            replicaConnectionService.checkConnection();
+        }
+
         try (ServerSocket serverSocket = new ServerSocket(PORT)) {
             serverSocket.setReuseAddress(true);
             logger.info("Server started on Port " + PORT);
@@ -61,12 +72,9 @@ public class Server implements AutoCloseable {
 
     @Override
     public void close() {
-        try {
-            if (!executor.isShutdown()) {
-                executor.shutdown();
-            }
-        } catch (Exception e) {
-            logger.log(Level.SEVERE, "Failed to shutdown executor", e);
+        logger.info("Shutting down server");
+        if (!executor.isShutdown()) {
+            executor.shutdown();
         }
         manager.shutdown();
     }

src/server/ServerBuilder.java

@@ -5,45 +5,56 @@ import util.Settings;
 
 import java.io.IOException;
 import java.util.Map;
-import java.util.Optional;
+import java.util.logging.Logger;
 
 public class ServerBuilder {
-    private int port = 16379;
-    private String role;
-    private final String[] masterPortAndHost;
-    private final static ServerInfo info = ServerInfo.getInstance();
+    private static final Logger logger = Logger.getLogger(ServerBuilder.class.getName());
+    private int port = 6379;
+    private String role = "master";
+    private String[] masterPortAndHost;
+    private final ServerInfo serverInfo;
+    private final RdbFileInfo rdbFileInfo;
     private final Map<String, String> parameters;
-    private static final RdbFileInfo rdbfileInfo = RdbFileInfo.getInstance();
+    private ReplicaConnectionService replicaConnectionService;
 
     public ServerBuilder(String[] args) {
+        logger.info("Initializing ServerBuilder");
         this.parameters = Settings.extractArgs(args);
         this.port = Settings.extractPort(parameters, port);
-        this.masterPortAndHost = initializeMasterPortAndHost();
+        this.serverInfo = ServerInfo.getInstance();
+        this.rdbFileInfo = RdbFileInfo.getInstance();
+        initializeFromParameters();
     }
 
     public ServerBuilder setPort(int port) {
+        logger.info("Setting port to " + port);
         this.port = port;
         return this;
     }
 
-    public void setRole(String role) {
+    public ServerBuilder setRole(String role) {
+        logger.info("Setting role to " + role);
         this.role = role;
+        return this;
     }
 
     public String[] getMasterPortAndHost() {
-        return Optional.ofNullable(masterPortAndHost).orElseGet(this::initializeMasterPortAndHost);
+        return masterPortAndHost;
     }
 
-
     public Server build() throws IOException {
-        if (role == null) {
-            role = "master";
+        logger.info("Building Server instance");
+        if ("slave".equals(role) && masterPortAndHost != null) {
+            this.replicaConnectionService = new ReplicaConnectionService(masterPortAndHost, port);
         }
-        return new Server(port);
+        return new Server(port, role, replicaConnectionService);
     }
 
-    private String[] initializeMasterPortAndHost() {
-        rdbfileInfo.setFile(parameters);
-        return info.findRole(parameters);
+    private void initializeFromParameters() {
+        logger.info("Initializing from parameters");
+        rdbFileInfo.setFile(parameters);
+        this.masterPortAndHost = serverInfo.findRole(parameters);
+        this.role = serverInfo.getRole();
+        logger.info("Initialized with role: " + role);
     }
 }