Fixed errors in Business Logic API and finished it.

backend/src/main/java/net/miarma/contaminus/server/DataLayerAPIVerticle.java

@@ -9,7 +9,9 @@ import com.google.gson.GsonBuilder;
 
 import io.vertx.core.AbstractVerticle;
 import io.vertx.core.Promise;
+import io.vertx.core.Vertx;
 import io.vertx.core.http.HttpMethod;
+import io.vertx.core.json.JsonObject;
 import io.vertx.ext.web.Router;
 import io.vertx.ext.web.RoutingContext;
 import io.vertx.ext.web.handler.BodyHandler;
@@ -33,14 +35,27 @@ public class DataLayerAPIVerticle extends AbstractVerticle {
     private ConfigManager configManager;
     private final Gson gson = new GsonBuilder().serializeNulls().create();
     
-    public DataLayerAPIVerticle(JDBCPool pool) {
+    @SuppressWarnings("deprecation")
-        this.pool = pool;
+	public DataLayerAPIVerticle() {
-        this.configManager = ConfigManager.getInstance();
+    	this.configManager = ConfigManager.getInstance();
+    	String jdbcUrl = configManager.getJdbcUrl();
+        String dbUser = configManager.getStringProperty("db.user");
+        String dbPwd = configManager.getStringProperty("db.pwd");
+        Integer poolSize = configManager.getIntProperty("db.poolSize");
+
+        JsonObject dbConfig = new JsonObject()
+                .put("url", jdbcUrl)
+                .put("user", dbUser)
+                .put("password", dbPwd)
+                .put("max_pool_size", poolSize != null ? poolSize : 10);
+		        
+        this.pool = JDBCPool.pool(Vertx.vertx(), dbConfig);;
     }
     
 	@Override
     public void start(Promise<Void> startPromise) {
 		Constants.LOGGER.info("📡 Iniciando DataLayerAPIVerticle...");
+			
 		dbManager = DatabaseManager.getInstance(pool);
 		
 		Router router = Router.router(vertx);
@@ -88,7 +103,15 @@ public class DataLayerAPIVerticle extends AbstractVerticle {
 	        .requestHandler(router)
 	        .listen(configManager.getDataApiPort(), configManager.getHost());
     
-        startPromise.complete();
+        pool.query("SELECT 1").execute(ar -> {
+            if (ar.succeeded()) {
+                Constants.LOGGER.info("🟢 Connected to DB");
+                startPromise.complete();
+            } else {
+            	Constants.LOGGER.error("🔴 Failed to connect to DB: " + ar.cause());
+                startPromise.fail(ar.cause());
+            }
+        });   
     }
 
 	private void getAllGroups(RoutingContext context) {

backend/src/main/java/net/miarma/contaminus/server/MainVerticle.java

@@ -6,8 +6,6 @@ import java.io.InputStream;
 import java.nio.file.Files;
 import java.nio.file.StandardCopyOption;
 
-import io.vertx.core.json.JsonObject;
-import io.vertx.jdbcclient.JDBCPool;
 import io.vertx.core.AbstractVerticle;
 import io.vertx.core.DeploymentOptions;
 import io.vertx.core.Launcher;
@@ -18,29 +16,13 @@ import net.miarma.contaminus.common.Constants;
 
 public class MainVerticle extends AbstractVerticle {
     private ConfigManager configManager;
-    private JDBCPool pool;
 
     public static void main(String[] args) {    	
     	Launcher.executeCommand("run", MainVerticle.class.getName());
     }
 	
-	@SuppressWarnings("deprecation")
 	private void init() {	
-		configManager = ConfigManager.getInstance();
+		this.configManager = ConfigManager.getInstance();
-		
-		String jdbcUrl = configManager.getJdbcUrl();
-        String dbUser = configManager.getStringProperty("db.user");
-        String dbPwd = configManager.getStringProperty("db.pwd");
-        Integer poolSize = configManager.getIntProperty("db.poolSize");
-
-        JsonObject dbConfig = new JsonObject()
-                .put("url", jdbcUrl)
-                .put("user", dbUser)
-                .put("password", dbPwd)
-                .put("max_pool_size", poolSize != null ? poolSize : 10);
-		
-        pool = JDBCPool.pool(vertx, dbConfig);
-        
 	    initializeDirectories();
 	    copyDefaultConfig();
     }
@@ -72,17 +54,9 @@ public class MainVerticle extends AbstractVerticle {
     	try {
     		System.setProperty("java.util.logging.manager", "org.jboss.logmanager.LogManager");
         	init();
-        	pool.query("SELECT 1").execute(ar -> {
+        	deployVerticles(startPromise);
-                if (ar.succeeded()) {
-                    Constants.LOGGER.info("🟢 Connected to DB");
-                    deployVerticles(startPromise);
-                } else {
-                	Constants.LOGGER.error("🔴 Failed to connect to DB: " + ar.cause());
-                    startPromise.fail(ar.cause());
-                }
-            });
     	} catch (Exception e) {
-			System.err.println("🔴 Error starting the application: " + e);
+			Constants.LOGGER.error("🔴 Error starting the application: " + e);
 			startPromise.fail(e);
 		}
     }
@@ -91,7 +65,7 @@ public class MainVerticle extends AbstractVerticle {
         final DeploymentOptions options = new DeploymentOptions();
         options.setThreadingModel(ThreadingModel.WORKER);
 
-        vertx.deployVerticle(new DataLayerAPIVerticle(pool), options, result -> {
+        vertx.deployVerticle(new DataLayerAPIVerticle(), options, result -> {
             if (result.succeeded()) {
             	Constants.LOGGER.info("🟢 DatabaseVerticle desplegado");
             	Constants.LOGGER.info("\t🔗 API URL: " + configManager.getHost() 

backend/src/main/java/net/miarma/contaminus/util/RestClientUtil.java

@@ -33,8 +33,6 @@ public class RestClientUtil {
 	public <T> void getRequest(Integer port, String host, String resource, Class<T> classType, Promise<T> promise) {
 		client.getAbs(host + ":" + port + resource).send(elem -> {
 			if (elem.succeeded()) {
-				System.out.println(host + ":" + port + resource);
-				System.out.println(elem.result().bodyAsString());
 				promise.complete(gson.fromJson(elem.result().bodyAsString(), classType));
 			} else {
 				promise.fail(elem.cause());