/**
* 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.yarn.service;

import org.apache.hadoop.conf.Configuration;

/**
 * Service LifeCycle.
 */
public interface Service {

  public enum STATE {
    NOTINITED,
    INITED,
    STARTED,
    STOPPED;
  }

  void init(Configuration config);
  void start();
  void stop();
  void register(ServiceStateChangeListener listener);
  void unregister(ServiceStateChangeListener listener);

  String getName();
  Configuration getConfig();
  STATE getServiceState();
  long getStartTime();
}