content: /*
   * Copyright 1999-2023 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.console.handler.impl.inner.naming;
  
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.model.Page;
  import com.alibaba.nacos.api.naming.pojo.Instance;
  import com.alibaba.nacos.common.notify.NotifyCenter;
  import com.alibaba.nacos.common.trace.event.naming.UpdateInstanceTraceEvent;
  import com.alibaba.nacos.console.handler.impl.ConditionFunctionEnabled;
  import com.alibaba.nacos.console.handler.impl.inner.EnabledInnerHandler;
  import com.alibaba.nacos.console.handler.naming.InstanceHandler;
  import com.alibaba.nacos.core.utils.PageUtil;
  import com.alibaba.nacos.naming.core.CatalogService;
  import com.alibaba.nacos.naming.core.CatalogServiceV2Impl;
  import com.alibaba.nacos.naming.core.InstanceOperatorClientImpl;
  import com.alibaba.nacos.naming.model.form.InstanceForm;
  import org.springframework.context.annotation.Conditional;
  import org.springframework.stereotype.Service;
  
  import java.util.List;
  
  /**
   * Implementation of InstanceHandler that handles instance-related operations.
   *
   * @author zhangyukun
   */
  @Service
  @EnabledInnerHandler
  @Conditional(ConditionFunctionEnabled.ConditionNamingEnabled.class)
  public class InstanceInnerHandler implements InstanceHandler {
      
      private final CatalogService catalogService;
      
      private final InstanceOperatorClientImpl instanceServiceV2;
      
      /**
       * Constructs a new InstanceInnerHandler with the provided dependencies.
       *
       * @param catalogServiceV2 the service for catalog-related operations
       */
      public InstanceInnerHandler(CatalogServiceV2Impl catalogServiceV2, InstanceOperatorClientImpl instanceServiceV2) {
          this.catalogService = catalogServiceV2;
          this.instanceServiceV2 = instanceServiceV2;
      }
      
      @Override
      public Page<? extends Instance> listInstances(String namespaceId, String serviceNameWithoutGroup, String groupName,
              String clusterName, int page, int pageSize) throws NacosException {
          List<? extends Instance> instances = catalogService.listInstances(namespaceId, groupName,
                  serviceNameWithoutGroup, clusterName);
          return PageUtil.subPage(instances, page, pageSize);
      }
      
      @Override
      public void updateInstance(InstanceForm instanceForm, Instance instance) throws NacosException {
          instanceServiceV2.updateInstance(instanceForm.getNamespaceId(), instanceForm.getGroupName(),
                  instanceForm.getServiceName(), instance);
          NotifyCenter.publishEvent(
                  new UpdateInstanceTraceEvent(System.currentTimeMillis(), "", instanceForm.getNamespaceId(),
                          instanceForm.getGroupName(), instanceForm.getServiceName(), instance.getIp(),
                          instance.getPort(), instance.getMetadata()));
      }
  }
  
  