content: /*
   * Copyright 2013-2023 the original author or authors.
   *
   * 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.cloud.examples;
  
  import com.alibaba.csp.sentinel.adapter.reactor.SentinelReactorTransformer;
  import reactor.core.publisher.Flux;
  import reactor.core.publisher.Mono;
  
  import org.springframework.beans.factory.annotation.Autowired;
  import org.springframework.cloud.client.circuitbreaker.ReactiveCircuitBreakerFactory;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.RestController;
  import org.springframework.web.reactive.function.client.WebClient;
  
  /**
   * @author <a href="mailto:fangjian0423@gmail.com">Jim</a>
   */
  @RestController
  public class SentinelWebFluxController {
  
  	@Autowired
  	private ReactiveCircuitBreakerFactory circuitBreakerFactory;
  
  	@GetMapping("/mono")
  	public Mono<String> mono() {
  		return Mono.just("simple string")
  				// transform the publisher here.
  				.transform(new SentinelReactorTransformer<>("mono"));
  	}
  
  	@GetMapping("/test")
  	public Mono<String> test() {
  		return Mono.just("simple string")
  				// transform the publisher here.
  				.transform(new SentinelReactorTransformer<>("test"));
  	}
  
  	@GetMapping("/flux")
  	public Flux<String> flux() {
  		return Flux.fromArray(new String[] { "a", "b", "c" })
  				// transform the publisher here.
  				.transform(new SentinelReactorTransformer<>("flux"));
  	}
  
  	@GetMapping("/cbSlow")
  	public Mono<String> cbSlow() {
  		int delaySecs = 2;
  		return WebClient.builder().baseUrl("http://httpbin.org/").build().get()
  				.uri("/delay/" + delaySecs).retrieve().bodyToMono(String.class)
  				.transform(it -> circuitBreakerFactory.create("slow_mono").run(it, t -> {
  					t.printStackTrace();
  					return Mono.just("fallback");
  				}));
  	}
  
  	@GetMapping("/cbError")
  	public Mono<String> cbError() {
  		String code = "500";
  		return WebClient.builder().baseUrl("http://httpbin.org/").build().get()
  				.uri("/status/" + code).retrieve().bodyToMono(String.class)
  				.transform(it -> circuitBreakerFactory.create("cbError").run(it, t -> {
  					t.printStackTrace();
  					return Mono.just("fallback");
  				}));
  	}
  
  }
  