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.bookkeeper.meta;
  
  import java.io.IOException;
  import java.util.function.Consumer;
  import org.apache.bookkeeper.net.BookieId;
  
  /**
   * Interface to handle the ledger auditor election.
   */
  public interface LedgerAuditorManager extends AutoCloseable {
  
      /**
       * Events that can be triggered by the LedgerAuditorManager.
       */
      enum AuditorEvent {
          SessionLost,
          VoteWasDeleted,
      }
  
      /**
       * Try to become the auditor. If there's already another auditor, it will wait until this
       * current instance has become the auditor.
       *
       * @param bookieId the identifier for current bookie
       * @param listener listener that will receive AuditorEvent notifications
       * @return
       */
      void tryToBecomeAuditor(String bookieId, Consumer<AuditorEvent> listener) throws IOException, InterruptedException;
  
      /**
       * Return the information regarding the current auditor.
       * @return
       */
      BookieId getCurrentAuditor() throws IOException, InterruptedException;
  }
  