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.zookeeper;
  
  /**
   * Interface of the policy to use when retrying operations.
   */
  public interface RetryPolicy {
  
      /**
       * Called when retrying an operation failed for some reason. Return true if
       * another attempt is allowed to make.
       *
       * @param retryCount
       *            The number of times retried so far (1 for the first time).
       * @param elapsedRetryTime
       *            The elapsed time since the operation attempted. (in
       *            milliseconds)
       * @return true if anther attempt is allowed to make. otherwise, false.
       */
      boolean allowRetry(int retryCount, long elapsedRetryTime);
  
      /**
       * Called before making an attempt to retry a failed operation. Return 0 if
       * an attempt needs to be made immediately.
       *
       * @param retryCount
       *            The number of times retried so far (0 for the first time).
       * @param elapsedRetryTime
       *            The elapsed time since the operation attempted. (in
       *            milliseconds)
       * @return the elapsed time that the attempt needs to wait before retrying.
       *         (in milliseconds)
       */
      long nextRetryWaitTime(int retryCount, long elapsedRetryTime);
  
  }
  