content: /*
   * Copyright 2024-2025 the original author or authors.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     https://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package io.github.a2ap.core.server;
  
  /**
   * Interface for managing event queues for tasks.
   * <p>
   * This is the Java equivalent of Python's QueueManager.
   */
  public interface QueueManager {
  
      /**
       * Creates or retrieves the main event queue for a task.
       *
       * @param taskId The ID of the task.
       * @return The EventQueue for the task.
       */
      EventQueue create(String taskId);
  
      /**
       * Taps into an existing task's event queue to create a child queue.
       *
       * @param taskId The ID of the task.
       * @return A new EventQueue that receives events from the main task queue, or null if
       * no queue exists for this task.
       */
      EventQueue tap(String taskId);
  
      /**
       * Retrieves the main event queue for a task without creating it.
       *
       * @param taskId The ID of the task.
       * @return The EventQueue for the task, or null if it doesn't exist.
       */
      EventQueue get(String taskId);
  
      /**
       * Removes and closes the event queue for a task.
       *
       * @param taskId The ID of the task.
       */
      void remove(String taskId);
  
  }
  