I’m struggling to get client-side load balancing configured with
spring-cloud-starter-loadbalancer which is in my pom.xml.

I want to make this feign client load balanced:

//@LoadBalancerClient(name = "eisec2", configuration = LoadBalancerConfiguration.class)
@FeignClient(name = "eisec2")
public interface Eisec2Client {

    @RequestMapping(path = "CallDetails/{number}", method = RequestMethod.GET)
    CallDetails getCaller(String cli);

    @RequestMapping(path = "Status", method = RequestMethod.GET)
    CallDetails getStatus();
}

with enabled feign clients and some default configuration for client load balancing:

@EnableFeignClients
@SpringBootApplication
@LoadBalancerClients(defaultConfiguration = LoadBalancerClientConfiguration.class)
public class IsecServerApplication {
    ...psvm...
}

then in application.properties I have:1

spring.cloud.loadbalancer.enabled=true
spring.cloud.discovery.client.simple.instances.eisec2[0].uri=http://ip:6090/eisec/1
spring.cloud.discovery.client.simple.instances.eisec2[1].uri=http://ip:6091/eisec/1
spring.cloud.loadbalancer.ribbon.enabled=false

this is the class that I have commented out on the feign client declaration:

public class LoadBalancerConfiguration {

    @Bean
    @Scope("prototype")
    public Feign.Builder feignBuilder() {
        return Feign.builder();
    }

    @Bean
    public ServiceInstanceListSupplier instanceSupplier(ConfigurableApplicationContext context) {
        return ServiceInstanceListSupplier.builder()
                .withBlockingDiscoveryClient()
                .withHealthChecks()
                .build(context);
    }
}

all I read is that it cannot have an @Configuration stereotype on it.

However, it’s not enough, the injected Eisec2Client is of type HardCodedTarget and ‘url’ property of http://eisec2 which is wrong so it does request on non existing uri.

I was unable to find single complete example of code for spring-cloud-starter-loadbalancer with spring-cloud-starter-openfeign

I’ll appreciate some working example if somebody has it or instructions on how to achieve this (at least simple client side loadbalance)

I am on spring-cloud version: 2023.0.1
and

spring-boot-parent version 3.2.6.