package com.sf.eurekaclientdemo1.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Duration;
import java.util.List;

@RestController
public class ClientController {

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private DiscoveryClient discoveryClient;

    // http://localhost:18091/clientDemo1
    @GetMapping("/clientDemo1")
    public String handler() throws Exception {
        // 要访问的 http://localhost:18092/clientDemo2
//        String result = restTemplate.getForObject("http://localhost:18092/clientDemo2", String.class);
        // 通过服务名 完成服务调用
        String result = restTemplate.getForObject("http://eureka-client-demo-2/clientDemo2", String.class);

        // eureka-client-demo-2 localhost:18092
        // eureka-client-demo-2 localhost:18093
        List<String> services = discoveryClient.getServices();
        for (String service : services) {
            System.out.println(service);
        }

        // 实例  集群中的实例 一个可以被访问的进程  192.168.1.10:18091  192.168.1.11:18091
        List<ServiceInstance> instances = discoveryClient.getInstances("eureka-client-demo-2");
        for (ServiceInstance instance : instances) {
            System.out.println(instance.getServiceId());
            System.out.println(instance.getHost());
            System.out.println(instance.getPort());
            System.out.println(instance.getUri());
        }

        String data = "client demo 1 success";
        return data + " " + result;
    }

}