content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * Licensed 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 com.alibaba.nacos.naming.cluster;
  
  /**
   * A flag to indicate the exact status of a server.
   *
   * @author nkorange
   * @since 1.0.0
   */
  public enum ServerStatus {
      /**
       * server is up and ready for request
       */
      UP,
      /**
       * server is out of service, something abnormal happened
       */
      DOWN,
      /**
       * server is preparing itself for request, usually 'UP' is the next status
       */
      STARTING,
      /**
       * server is manually paused
       */
      PAUSED,
      /**
       * only write operation is permitted.
       */
      WRITE_ONLY,
      /**
       * only read operation is permitted.
       */
      READ_ONLY
  }
  