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.client;
  
  import org.apache.bookkeeper.net.BookieId;
  
  /**
   * This interface returns heuristics used to determine the health of a Bookkeeper server for read
   * ordering.
   */
  public interface BookiesHealthInfo {
  
      /**
       * Return the failure history for a bookie.
       *
       * @param bookieSocketAddress
       * @return failed entries on a bookie, -1 if there have been no failures
       */
      long getBookieFailureHistory(BookieId bookieSocketAddress);
  
      /**
       * Returns pending requests to a bookie.
       *
       * @param bookieSocketAddress
       * @return number of pending requests
       */
      long getBookiePendingRequests(BookieId bookieSocketAddress);
  
  }
  