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.asterix.common.replication;
  
  import org.apache.asterix.common.storage.ReplicaIdentifier;
  
  public interface IPartitionReplica {
  
      enum PartitionReplicaStatus {
          /* replica is in-sync with master */
          IN_SYNC,
          /* replica is still catching up with master */
          CATCHING_UP,
          /* replica is not connected with master */
          DISCONNECTED
      }
  
      /**
       * Gets the status of a replica.
       *
       * @return The status
       */
      PartitionReplicaStatus getStatus();
  
      /**
       * Gets the identifier of a replica
       *
       * @return The identifier
       */
      ReplicaIdentifier getIdentifier();
  
      /**
       * Notifies that failure {@code failure} occurred on this replica
       *
       * @param failure
       */
      void notifyFailure(Exception failure);
  
      /**
       * Gets the current sync progress
       *
       * @return the current sync progress
       */
      double getSyncProgress();
  
      /**
       * Gets the last progress time of this replica based on System.nanoTime
       *
       * @return the last progress time
       */
      long getLastProgressTime();
  }
  