content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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
   *
   *    http://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 org.apache.kafka.streams.processor.assignment;
  
  
  import org.apache.kafka.streams.processor.TaskId;
  
  import java.util.Set;
  
  /**
   * A simple container class corresponding to a given {@link TaskId}.
   * Includes metadata such as whether it's stateful and the names of all state stores
   * belonging to this task, the set of input topic partitions and changelog topic partitions
   * for all logged state stores, and the rack ids of all replicas of each topic partition
   * in the task.
   */
  public interface TaskInfo {
  
      /**
       *
       * @return The {@code TaskId} of the underlying task.
       */
      TaskId id();
  
      /**
       *
       * @return true if the underlying task is stateful, and false otherwise.
       */
      boolean isStateful();
  
      /**
       *
       * @return the set of state store names that this task makes use of. In the case of stateless tasks,
       *         this set will be empty as no state stores are used.
       */
      Set<String> stateStoreNames();
  
      /**
       *
       * @return the set of topic partitions in use for this task.
       */
      Set<TaskTopicPartition> topicPartitions();
  }
  