content: /*
   * Copyright 1999-2019 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.demo.spring.webmvc.config;
  
  import com.alibaba.csp.sentinel.demo.spring.webmvc.vo.ResultWrapper;
  import com.alibaba.csp.sentinel.slots.block.BlockException;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.core.annotation.Order;
  import org.springframework.web.bind.annotation.ControllerAdvice;
  import org.springframework.web.bind.annotation.ExceptionHandler;
  import org.springframework.web.bind.annotation.ResponseBody;
  
  /**
   * Spring configuration for global exception handler.
   * This will be activated when the {@code BlockExceptionHandler}
   * throws {@link BlockException directly}.
   *
   * @author kaizi2009
   */
  @ControllerAdvice
  @Order(0)
  public class SentinelSpringMvcBlockHandlerConfig {
  
      private Logger logger = LoggerFactory.getLogger(this.getClass());
  
      @ExceptionHandler(BlockException.class)
      @ResponseBody
      public ResultWrapper sentinelBlockHandler(BlockException e) {
          logger.warn("Blocked by Sentinel: {}", e.getRule());
          // Return the customized result.
          return ResultWrapper.blocked();
      }
  }
  