Fixes with queuing

src/consumers/user_consumer.py

@@ -35,8 +35,8 @@ class UserConsumer:
         Args:
             message_dict: Dictionary containing the message data
         """
-        try:
-            # Reconstruct the UserMessage object
+        # Reconstruct the UserMessage object — let exceptions propagate so the
+        # consumer's callback_wrapper can decide whether to ack, nack+discard, or requeue.
         message = UserMessage.from_dict(message_dict)
 
         if message.event_type == UserEventType.CREATE:
@@ -48,22 +48,18 @@ class UserConsumer:
         else:
             logger.warning(f"Unknown event type: {message.event_type}")
 
-        except Exception as e:
-            logger.error(f"Error processing user message: {e}", exc_info=True)
-            # Rollback en caso de error en el procesamiento del mensaje
-            self.repo.db.rollback()
-            raise
-    
     def _handle_create_user(self, message: UserMessage):
         """Handle user create event"""
-        try:
         logger.info(f"Creating user: {message.email}")
 
-            # Parse datetime strings
+        if not message.fecha_nacimiento:
+            raise ValueError(f"Missing fecha_nacimiento in CREATE message for email {message.email}")
+        if not message.fecha_creacion:
+            raise ValueError(f"Missing fecha_creacion in CREATE message for email {message.email}")
+
         fecha_nacimiento = datetime.fromisoformat(message.fecha_nacimiento)
         fecha_creacion = datetime.fromisoformat(message.fecha_creacion)
 
-            # Create User domain object
         user = User(
             user_id=0,  # Will be auto-generated by DB
             nombre=message.nombre,
@@ -78,27 +74,18 @@ class UserConsumer:
             biografia=message.biografia
         )
 
-            # Save to repository with transaction handling
         saved_user = self.repo.save(user)
         logger.info(f"User created successfully: {saved_user.user_id} - {saved_user.email}")
 
-        except Exception as e:
-            logger.error(f"Error creating user: {e}", exc_info=True)
-            self.repo.db.rollback()
-            raise
-    
     def _handle_update_user(self, message: UserMessage):
         """Handle user update event"""
-        try:
         logger.info(f"Updating user: {message.user_id}")
 
-            # Find the user
         user = self.repo.find_by_id(message.user_id)
         if not user:
             logger.warning(f"User not found: {message.user_id}")
             return
 
-            # Update fields if provided
         if message.nombre:
             user.nombre = message.nombre
         if message.apellido:
@@ -108,18 +95,11 @@ class UserConsumer:
         if message.biografia is not None:
             user.biografia = message.biografia
 
-            # Save to repository with transaction handling
-            updated_user = self.repo.update(user)
+        self.repo.update(user)
         logger.info(f"User updated successfully: {message.user_id}")
 
-        except Exception as e:
-            logger.error(f"Error updating user: {e}", exc_info=True)
-            self.repo.db.rollback()
-            raise
-    
     def _handle_delete_user(self, message: UserMessage):
         """Handle user delete event"""
-        try:
         logger.info(f"Deleting user: {message.user_id}")
 
         success = self.repo.delete(message.user_id)
@@ -128,11 +108,6 @@ class UserConsumer:
         else:
             logger.warning(f"Failed to delete user: {message.user_id}")
 
-        except Exception as e:
-            logger.error(f"Error deleting user: {e}", exc_info=True)
-            self.repo.db.rollback()
-            raise
-    
     def start(self):
         """Start consuming messages"""
         logger.info("Starting User Consumer...")
@@ -145,7 +120,6 @@ class UserConsumer:
             logger.error(f"Consumer error: {e}", exc_info=True)
             raise
         finally:
-            # Asegurar cierre de sesión
             if self.repo.db:
                 try:
                     self.repo.db.close()

src/infrastructure/adapters/rabbitmq/consumer.py

@@ -23,6 +23,7 @@ class RabbitMQConsumer:
             )
             channel = connection.channel()
             channel.queue_declare(queue=self.queue_name, durable=True)
+            channel.basic_qos(prefetch_count=1)
 
             def callback_wrapper(ch, method, properties, body):
                 try:
@@ -34,13 +35,13 @@ class RabbitMQConsumer:
 
                     ch.basic_ack(delivery_tag=method.delivery_tag)
 
-                except IntegrityError as e:
-                    # Error de negocio: no tiene sentido reintentar
-                    logger.warning(f"Business error, discarding message: {e}")
+                except (IntegrityError, ValueError, TypeError, KeyError) as e:
+                    # Errores de negocio/datos: no tiene sentido reintentar
+                    logger.warning(f"Business/data error, discarding message: {e}")
                     ch.basic_nack(delivery_tag=method.delivery_tag, requeue=False)
 
                 except Exception as e:
-                    # Error transitorio (red, DB caída): sí puede resolverse solo
+                    # Error transitorio (red, DB caída): puede resolverse solo
                     logger.error(f"Transient error processing message: {e}")
                     ch.basic_nack(delivery_tag=method.delivery_tag, requeue=True)