/**
 *
 * 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.hadoop.hbase;

import org.apache.hadoop.classification.InterfaceAudience;

/**
 * Interface to support the aborting of a given server or client.
 * <p>
 * This is used primarily for ZooKeeper usage when we could get an unexpected
 * and fatal exception, requiring an abort.
 * <p>
 * Implemented by the Master, RegionServer, and TableServers (client).
 */
@InterfaceAudience.Private
public interface Abortable {
  /**
   * Abort the server or client.
   * @param why Why we're aborting.
   * @param e Throwable that caused abort. Can be null.
   */
  void abort(String why, Throwable e);
  
  /**
   * Check if the server or client was aborted. 
   * @return true if the server or client was aborted, false otherwise
   */
  boolean isAborted();
}
