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.tests.nacos.discovery;
  
  import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;
  import org.springframework.boot.web.servlet.context.ServletWebServerInitializedEvent;
  import org.springframework.cloud.client.loadbalancer.LoadBalanced;
  import org.springframework.cloud.openfeign.EnableFeignClients;
  import org.springframework.cloud.openfeign.FeignClient;
  import org.springframework.context.annotation.Bean;
  import org.springframework.context.annotation.Profile;
  import org.springframework.context.event.EventListener;
  import org.springframework.stereotype.Component;
  import org.springframework.web.bind.annotation.GetMapping;
  import org.springframework.web.bind.annotation.PathVariable;
  import org.springframework.web.bind.annotation.RestController;
  import org.springframework.web.client.RestTemplate;
  
  /**
   *
   * @author freeman
   */
  @SpringBootApplication
  @EnableFeignClients
  public class NacosDiscoveryTestApp {
  
  	public static void main(String[] args) {
  		SpringApplication.run(NacosDiscoveryTestApp.class, args);
  	}
  
  	@Bean
  	@LoadBalanced
  	@Profile("service-1")
  	RestTemplate restTemplate() {
  		return new RestTemplate();
  	}
  
  	@RestController
  	@Profile("service-2")
  	static class Controller {
  		int port;
  
  		@GetMapping
  		public Object get() {
  			return port;
  		}
  
  		@GetMapping("/{ok}")
  		public Object pass(@PathVariable Boolean ok) {
  			if (ok) {
  				return "ok";
  			}
  			throw new RuntimeException("not ok!");
  		}
  
  		@EventListener
  		public void onApplicationEvent(ServletWebServerInitializedEvent event) {
  			port = event.getWebServer().getPort();
  		}
  	}
  
  	@FeignClient(value = "service-2", fallback = Fallback.class)
  	interface Service2Client {
  		@GetMapping
  		Object get();
  
  		@GetMapping("/{ok}")
  		String pass(@PathVariable Boolean ok);
  	}
  
  	@Component
  	static class Fallback implements Service2Client {
  		@Override
  		public Object get() {
  			return "shouldn't use this !";
  		}
  
  		@Override
  		public String pass(Boolean ok) {
  			return "fallback";
  		}
  	}
  
  }
  