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.controllers.v3;
  
  import com.alibaba.nacos.api.annotation.NacosApi;
  import com.alibaba.nacos.api.exception.NacosException;
  import com.alibaba.nacos.api.exception.api.NacosApiException;
  import com.alibaba.nacos.api.model.Page;
  import com.alibaba.nacos.api.model.v2.ErrorCode;
  import com.alibaba.nacos.api.model.v2.Result;
  import com.alibaba.nacos.api.naming.pojo.maintainer.ServiceDetailInfo;
  import com.alibaba.nacos.api.naming.pojo.maintainer.ServiceView;
  import com.alibaba.nacos.api.naming.pojo.maintainer.SubscriberInfo;
  import com.alibaba.nacos.api.selector.Selector;
  import com.alibaba.nacos.auth.annotation.Secured;
  import com.alibaba.nacos.common.notify.NotifyCenter;
  import com.alibaba.nacos.common.trace.event.naming.DeregisterServiceTraceEvent;
  import com.alibaba.nacos.common.trace.event.naming.RegisterServiceTraceEvent;
  import com.alibaba.nacos.common.trace.event.naming.UpdateServiceTraceEvent;
  import com.alibaba.nacos.common.utils.JacksonUtils;
  import com.alibaba.nacos.common.utils.StringUtils;
  import com.alibaba.nacos.core.control.TpsControl;
  import com.alibaba.nacos.core.model.form.AggregationForm;
  import com.alibaba.nacos.core.model.form.PageForm;
  import com.alibaba.nacos.core.paramcheck.ExtractorManager;
  import com.alibaba.nacos.naming.core.CatalogServiceV2Impl;
  import com.alibaba.nacos.naming.core.ServiceOperatorV2Impl;
  import com.alibaba.nacos.naming.core.v2.metadata.ServiceMetadata;
  import com.alibaba.nacos.naming.core.v2.pojo.Service;
  import com.alibaba.nacos.naming.misc.UtilsAndCommons;
  import com.alibaba.nacos.naming.model.form.ServiceForm;
  import com.alibaba.nacos.naming.model.form.ServiceListForm;
  import com.alibaba.nacos.naming.paramcheck.NamingDefaultHttpParamExtractor;
  import com.alibaba.nacos.naming.selector.NoneSelector;
  import com.alibaba.nacos.naming.selector.SelectorManager;
  import com.alibaba.nacos.plugin.auth.constant.ActionTypes;
  import com.alibaba.nacos.plugin.auth.constant.ApiType;
  import com.fasterxml.jackson.databind.JsonNode;
  import org.springframework.web.bind.annotation.DeleteMapping;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.PutMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RestController;
  
  import java.net.URLDecoder;
  import java.util.List;
  import java.util.Map;
  import java.util.Objects;
  import java.util.Optional;
  
  /**
   * Service controller.
   *
   * @author Nacos
   */
  @NacosApi
  @RestController
  @RequestMapping(UtilsAndCommons.SERVICE_CONTROLLER_V3_ADMIN_PATH)
  @ExtractorManager.Extractor(httpExtractor = NamingDefaultHttpParamExtractor.class)
  public class ServiceControllerV3 {
      
      private final ServiceOperatorV2Impl serviceOperatorV2;
      
      private final SelectorManager selectorManager;
      
      private final CatalogServiceV2Impl catalogServiceV2;
      
      public ServiceControllerV3(ServiceOperatorV2Impl serviceOperatorV2, SelectorManager selectorManager,
              CatalogServiceV2Impl catalogServiceV2) {
          this.serviceOperatorV2 = serviceOperatorV2;
          this.selectorManager = selectorManager;
          this.catalogServiceV2 = catalogServiceV2;
      }
      
      /**
       * Create a new service. This API will create a persistence service.
       */
      @PostMapping()
      @TpsControl(pointName = "NamingServiceRegister", name = "HttpNamingServiceRegister")
      @Secured(action = ActionTypes.WRITE, apiType = ApiType.ADMIN_API)
      public Result<String> create(ServiceForm serviceForm) throws Exception {
          serviceForm.validate();
          ServiceMetadata serviceMetadata = new ServiceMetadata();
          serviceMetadata.setProtectThreshold(serviceForm.getProtectThreshold());
          serviceMetadata.setSelector(parseSelector(serviceForm.getSelector()));
          serviceMetadata.setExtendData(UtilsAndCommons.parseMetadata(serviceForm.getMetadata()));
          serviceMetadata.setEphemeral(serviceForm.getEphemeral());
          serviceOperatorV2.create(Service.newService(serviceForm.getNamespaceId(), serviceForm.getGroupName(),
                  serviceForm.getServiceName(), serviceForm.getEphemeral()), serviceMetadata);
          NotifyCenter.publishEvent(
                  new RegisterServiceTraceEvent(System.currentTimeMillis(), serviceForm.getNamespaceId(),
                          serviceForm.getGroupName(), serviceForm.getServiceName()));
          
          return Result.success("ok");
      }
      
      /**
       * Remove service.
       */
      @DeleteMapping()
      @TpsControl(pointName = "NamingServiceDeregister", name = "HttpNamingServiceDeregister")
      @Secured(action = ActionTypes.WRITE, apiType = ApiType.ADMIN_API)
      public Result<String> remove(ServiceForm serviceForm) throws Exception {
          serviceForm.validate();
          String namespaceId = serviceForm.getNamespaceId();
          String groupName = serviceForm.getGroupName();
          String serviceName = serviceForm.getServiceName();
          serviceOperatorV2.delete(Service.newService(namespaceId, groupName, serviceName));
          NotifyCenter.publishEvent(
                  new DeregisterServiceTraceEvent(System.currentTimeMillis(), namespaceId, groupName, serviceName));
          
          return Result.success("ok");
      }
      
      /**
       * Get detail of service.
       */
      @GetMapping()
      @TpsControl(pointName = "NamingServiceQuery", name = "HttpNamingServiceQuery")
      @Secured(action = ActionTypes.READ, apiType = ApiType.ADMIN_API)
      public Result<ServiceDetailInfo> detail(ServiceForm serviceForm) throws Exception {
          serviceForm.validate();
          ServiceDetailInfo result = serviceOperatorV2.queryService(
                  Service.newService(serviceForm.getNamespaceId(), serviceForm.getGroupName(),
                          serviceForm.getServiceName()));
          
          return Result.success(result);
      }
      
      /**
       * List all service names.
       *
       * <ul>
       *     <li>
       *         if {@link ServiceListForm#isWithInstances()} is {@code true}, will return page {@link ServiceDetailInfo }
       *     </li>
       *     <li>
       *         if {@link ServiceListForm#isWithInstances()} is {@code false}, will return list {@link ServiceView }
       *     </li>
       * </ul>
       */
      @GetMapping("/list")
      @TpsControl(pointName = "NamingServiceListQuery", name = "HttpNamingServiceListQuery")
      @Secured(action = ActionTypes.READ, apiType = ApiType.ADMIN_API)
      public Result<Object> list(ServiceListForm serviceListForm, PageForm pageForm) throws Exception {
          serviceListForm.validate();
          pageForm.validate();
          String namespaceId = serviceListForm.getNamespaceId();
          String serviceName = serviceListForm.getServiceNameParam();
          String groupName = serviceListForm.getGroupNameParam();
          boolean hasIpCount = serviceListForm.isIgnoreEmptyService();
          boolean withInstances = serviceListForm.isWithInstances();
          int pageNo = pageForm.getPageNo();
          int pageSize = pageForm.getPageSize();
          
          if (withInstances) {
              return Result.success(
                      catalogServiceV2.pageListServiceDetail(namespaceId, groupName, serviceName, pageNo, pageSize));
          }
          return Result.success(
                  catalogServiceV2.listService(namespaceId, groupName, serviceName, pageNo, pageSize, hasIpCount));
      }
      
      /**
       * Update service.
       */
      @PutMapping()
      @TpsControl(pointName = "NamingServiceUpdate", name = "HttpNamingServiceUpdate")
      @Secured(action = ActionTypes.WRITE, apiType = ApiType.ADMIN_API)
      public Result<String> update(ServiceForm serviceForm) throws Exception {
          serviceForm.validate();
          Map<String, String> metadata = UtilsAndCommons.parseMetadata(serviceForm.getMetadata());
          ServiceMetadata serviceMetadata = new ServiceMetadata();
          serviceMetadata.setProtectThreshold(serviceForm.getProtectThreshold());
          serviceMetadata.setExtendData(metadata);
          serviceMetadata.setSelector(parseSelector(serviceForm.getSelector()));
          Service service = Service.newService(serviceForm.getNamespaceId(), serviceForm.getGroupName(),
                  serviceForm.getServiceName());
          
          serviceOperatorV2.update(service, serviceMetadata);
          
          NotifyCenter.publishEvent(new UpdateServiceTraceEvent(System.currentTimeMillis(), serviceForm.getNamespaceId(),
                  serviceForm.getGroupName(), serviceForm.getServiceName(), metadata));
          
          return Result.success("ok");
      }
      
      private Selector parseSelector(String selectorJsonString) throws Exception {
          if (StringUtils.isBlank(selectorJsonString)) {
              return new NoneSelector();
          }
          
          JsonNode selectorJson = JacksonUtils.toObj(URLDecoder.decode(selectorJsonString, "UTF-8"));
          String type = Optional.ofNullable(selectorJson.get("type")).orElseThrow(
                  () -> new NacosApiException(NacosException.INVALID_PARAM, ErrorCode.SELECTOR_ERROR,
                          "not match any type of selector!")).asText();
          String expression = Optional.ofNullable(selectorJson.get("expression")).map(JsonNode::asText).orElse(null);
          Selector selector = selectorManager.parseSelector(type, expression);
          if (Objects.isNull(selector)) {
              throw new NacosApiException(NacosException.INVALID_PARAM, ErrorCode.SELECTOR_ERROR,
                      "not match any type of selector!");
          }
          
          return selector;
      }
      
      /**
       * get subscriber list.
       */
      @GetMapping("/subscribers")
      @Secured(action = ActionTypes.READ, apiType = ApiType.ADMIN_API)
      public Result<Page<SubscriberInfo>> subscribers(ServiceForm serviceForm, PageForm pageForm,
              AggregationForm aggregationForm) throws Exception {
          serviceForm.validate();
          pageForm.validate();
          int pageNo = pageForm.getPageNo();
          int pageSize = pageForm.getPageSize();
          String namespaceId = serviceForm.getNamespaceId();
          String serviceName = serviceForm.getServiceName();
          String groupName = serviceForm.getGroupName();
          boolean aggregation = aggregationForm.isAggregation();
          return Result.success(
                  serviceOperatorV2.getSubscribers(namespaceId, serviceName, groupName, aggregation, pageNo, pageSize));
      }
      
      /**
       * Get all {@link Selector} types.
       */
      @GetMapping("/selector/types")
      @Secured(action = ActionTypes.READ, apiType = ApiType.ADMIN_API)
      public Result<List<String>> listSelectorTypes() {
          return Result.success(selectorManager.getAllSelectorTypes());
      }
  }
  
  