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.csp.sentinel.demo.cluster.app.service;
  
  import com.alibaba.csp.sentinel.annotation.SentinelResource;
  import com.alibaba.csp.sentinel.slots.block.BlockException;
  
  import org.springframework.stereotype.Service;
  
  /**
   * @author Eric Zhao
   */
  @Service
  public class DemoService {
  
      @SentinelResource(blockHandler = "sayHelloBlockHandler")
      public String sayHello(String name) {
          return "Hello, " + name;
      }
  
      public String sayHelloBlockHandler(String name, BlockException ex) {
          // This is the block handler.
          ex.printStackTrace();
          return String.format("Oops, <%s> blocked by Sentinel", name);
      }
  }
  