package com.sf.eurekaclientdemo1.config;

import com.sf.eurekaclientdemo1.mylb.ItxsRandomLoadBalancerClient;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.loadbalancer.core.RandomLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ReactorLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ReactorServiceInstanceLoadBalancer;
import org.springframework.cloud.loadbalancer.core.ServiceInstanceListSupplier;
import org.springframework.cloud.loadbalancer.support.LoadBalancerClientFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;

@Configuration
public class LoadBalancerConfig {

    // 切换成随机负载均衡器  默认是轮询负载均衡器
    @Bean
    public ReactorLoadBalancer<ServiceInstance> randomLoadBalancer(Environment environment,
                                                                   LoadBalancerClientFactory loadBalancerClientFactory) {
        String name = environment.getProperty(LoadBalancerClientFactory.PROPERTY_NAME);
        return new RandomLoadBalancer(
                loadBalancerClientFactory.getLazyProvider(name, ServiceInstanceListSupplier.class),
                name);
    }

    //自定义的负载均衡器
//    @Bean
//    public ReactorServiceInstanceLoadBalancer custonRandomLoadBalancer(
//            ObjectProvider<ServiceInstanceListSupplier> serviceInstanceListSupplierProvider){
//        return new ItxsRandomLoadBalancerClient(serviceInstanceListSupplierProvider);
//    }
}