content: /*
   * Copyright 1999-2020 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.healthcheck.v2;
  
  import com.alibaba.nacos.naming.core.v2.client.Client;
  import com.alibaba.nacos.naming.core.v2.pojo.InstancePublishInfo;
  import com.alibaba.nacos.naming.core.v2.pojo.Service;
  
  /**
   * Health status synchronizer. Maybe implement by CP and AP both.
   *
   * @author xiweng.yy
   */
  public interface HealthStatusSynchronizer {
      
      /**
       * Instance health status change.
       *
       * @param isHealthy is the instance change to healthy or not
       * @param client    client of instance
       * @param service   service of instance
       * @param instance  instance
       */
      void instanceHealthStatusChange(boolean isHealthy, Client client, Service service, InstancePublishInfo instance);
      
  }
  