content: /*
   * Copyright 1999-2024 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
   *
   *      https://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.csp.sentinel.adapter.spring.webmvc_v6x;
  
  import com.alibaba.csp.sentinel.adapter.spring.webmvc_v6x.config.SentinelWebMvcConfig;
  
  import com.alibaba.csp.sentinel.adapter.web.common.UrlCleaner;
  import jakarta.servlet.http.HttpServletRequest;
  
  import org.springframework.web.servlet.HandlerMapping;
  
  /**
   * Spring Web MVC interceptor that integrates with Sentinel.
   * <p>
   * This will record resource as `${uri}`.
   *
   * @since 1.8.8
   */
  public class SentinelWebInterceptor extends AbstractSentinelInterceptor {
  
      private final SentinelWebMvcConfig config;
  
      public SentinelWebInterceptor() {
          this(new SentinelWebMvcConfig());
      }
  
      public SentinelWebInterceptor(SentinelWebMvcConfig config) {
          super(config);
          if (config == null) {
              // Use the default config by default.
              this.config = new SentinelWebMvcConfig();
          } else {
              this.config = config;
          }
      }
  
      @Override
      protected String getResourceName(HttpServletRequest request) {
          // Resolve the Spring Web URL pattern from the request attribute.
          Object resourceNameObject = request.getAttribute(HandlerMapping.BEST_MATCHING_PATTERN_ATTRIBUTE);
          if (resourceNameObject == null || !(resourceNameObject instanceof String)) {
              return null;
          }
          String resourceName = (String) resourceNameObject;
          UrlCleaner urlCleaner = config.getUrlCleaner();
          if (urlCleaner != null) {
              resourceName = urlCleaner.clean(resourceName);
          }
          if (config.isContextPathSpecify() && request.getContextPath() != null) {
              resourceName = request.getContextPath() + resourceName;
          }
          return resourceName;
      }
  
      @Override
      protected String getContextName(HttpServletRequest request) {
          if (config.isWebContextUnify()) {
              return super.getContextName(request);
          }
  
          return getResourceName(request);
      }
  }
  