content: /*
   * Copyright 1999-$toady.year 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.config.server.controller.v3;
  
  import com.alibaba.nacos.api.annotation.NacosApi;
  import com.alibaba.nacos.api.exception.api.NacosApiException;
  import com.alibaba.nacos.api.model.v2.ErrorCode;
  import com.alibaba.nacos.api.model.v2.Result;
  import com.alibaba.nacos.auth.annotation.Secured;
  import com.alibaba.nacos.common.utils.StringUtils;
  import com.alibaba.nacos.config.server.constant.Constants;
  import com.alibaba.nacos.config.server.model.capacity.Capacity;
  import com.alibaba.nacos.config.server.model.form.UpdateCapacityForm;
  import com.alibaba.nacos.config.server.paramcheck.ConfigDefaultHttpParamExtractor;
  import com.alibaba.nacos.config.server.service.capacity.CapacityService;
  import com.alibaba.nacos.core.paramcheck.ExtractorManager;
  import com.alibaba.nacos.plugin.auth.constant.ActionTypes;
  import com.alibaba.nacos.plugin.auth.constant.ApiType;
  import com.alibaba.nacos.plugin.auth.constant.SignType;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.http.HttpStatus;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PostMapping;
  import org.springframework.web.bind.annotation.RequestMapping;
  import org.springframework.web.bind.annotation.RequestParam;
  import org.springframework.web.bind.annotation.RestController;
  
  import static com.alibaba.nacos.config.server.constant.Constants.CAPACITY_CONTROLLER_V3_ADMIN_PATH;
  
  /**
   * Capacity Management.
   *
   * @author Nacos
   */
  @NacosApi
  @RestController
  @RequestMapping(CAPACITY_CONTROLLER_V3_ADMIN_PATH)
  @ExtractorManager.Extractor(httpExtractor = ConfigDefaultHttpParamExtractor.class)
  public class CapacityControllerV3 {
      
      private static final Logger LOGGER = LoggerFactory.getLogger(CapacityControllerV3.class);
      
      private final CapacityService capacityService;
      
      public CapacityControllerV3(CapacityService capacityService) {
          this.capacityService = capacityService;
      }
      
      /**
       * Get capacity information.
       */
      @GetMapping
      @Secured(resource = Constants.CAPACITY_CONTROLLER_V3_ADMIN_PATH, action = ActionTypes.READ,
              signType = SignType.CONFIG, apiType = ApiType.ADMIN_API)
      public Result<Capacity> getCapacity(@RequestParam(required = false) String groupName,
              @RequestParam(required = false) String namespaceId) throws NacosApiException {
          if (StringUtils.isBlank(groupName) && StringUtils.isBlank(namespaceId)) {
              throw new NacosApiException(HttpStatus.BAD_REQUEST.value(), ErrorCode.PARAMETER_MISSING,
                      "At least one of the parameters (groupName or namespaceId) must be provided");
          }
          
          try {
              Capacity capacity = capacityService.getCapacityWithDefault(groupName, namespaceId);
              if (capacity == null) {
                  LOGGER.warn("[getCapacity] capacity not exist，need init groupName: {}, namespaceId: {}", groupName, namespaceId);
                  capacityService.initCapacity(groupName, namespaceId);
                  capacity = capacityService.getCapacityWithDefault(groupName, namespaceId);
              }
              return Result.success(capacity);
          } catch (Exception e) {
              LOGGER.error("[getCapacity] Failed to fetch capacity for groupName: {}, namespaceId: {}", groupName, namespaceId, e);
              return Result.failure(ErrorCode.SERVER_ERROR.getCode(), e.getMessage(), null);
          }
      }
      
      /**
       * Modify group or capacity of namespaceId, and init record when capacity information are still initial.
       */
      @PostMapping
      @Secured(resource = Constants.CAPACITY_CONTROLLER_V3_ADMIN_PATH, action = ActionTypes.WRITE,
              signType = SignType.CONFIG, apiType = ApiType.ADMIN_API)
      public Result<Boolean> updateCapacity(UpdateCapacityForm updateCapacityForm) throws NacosApiException {
          updateCapacityForm.checkNamespaceIdAndGroupName(capacityService);
          updateCapacityForm.validate();
          
          String groupName = updateCapacityForm.getGroupName();
          String namespaceId = updateCapacityForm.getNamespaceId();
          Integer quota = updateCapacityForm.getQuota();
          Integer maxSize = updateCapacityForm.getMaxSize();
          Integer maxAggrCount = updateCapacityForm.getMaxAggrCount();
          Integer maxAggrSize = updateCapacityForm.getMaxAggrSize();
          
          try {
              boolean isSuccess = capacityService.insertOrUpdateCapacity(groupName, namespaceId, quota, maxSize,
                      maxAggrCount, maxAggrSize);
              if (isSuccess) {
                  return Result.success(true);
              } else {
                  return Result.failure(ErrorCode.SERVER_ERROR.getCode(),
                          String.format("Failed to update the capacity for groupName: %s, namespaceId: %s", groupName, namespaceId), null);
              }
          } catch (Exception e) {
              LOGGER.error("[updateCapacity] Failed to update the capacity for groupName: {}, namespaceId: {}", groupName, namespaceId, e);
              return Result.failure(ErrorCode.SERVER_ERROR.getCode(), e.getMessage(), null);
          }
      }
  }