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.connect.runtime.distributed;
  
  import org.apache.kafka.connect.util.ConnectorTaskId;
  
  import java.util.Collection;
  
  /**
   * Listener for rebalance events in the worker group.
   */
  public interface WorkerRebalanceListener {
      /**
       * Invoked when a new assignment is created by joining the Connect worker group. This is
       * invoked for both successful and unsuccessful assignments.
       */
      void onAssigned(ExtendedAssignment assignment, int generation);
  
      /**
       * Invoked when a rebalance operation starts, revoking ownership for the set of connectors
       * and tasks. Depending on the Connect protocol version, the collection of revoked connectors
       * or tasks might refer to all or some of the connectors and tasks running on the worker.
       */
      void onRevoked(String leader, Collection<String> connectors, Collection<ConnectorTaskId> tasks);
  
  
      /**
       * Invoked when a worker experiences a poll timeout expiry.
       */
      void onPollTimeoutExpiry();
  }
  