Java フレームワーク マイクロサービス アーキテクチャのガバナンスの経験

@SpringBootApplication
public class ServiceApp {

    public static void main(String[] args) {
        SpringApplication.run(ServiceApp.class, args);
    }
    
    @RestController
    class ServiceController {
        
        @Autowired
        private DiscoveryClient discoveryClient;
        
        @GetMapping("/services")
        public List<ServiceInstance> getServices() {
            return discoveryClient.getInstances("my-service");
        }
    }
}

@FeignClient(name = "my-service", url = "http://localhost:8080")
public interface MyServiceClient {
    @GetMapping("/hello")
    String getHello();
}

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
...
@HystrixCommand
public String getHello() {
    return myServiceClient.getHello();
}

spring.cloud.config.server.git.uri=https://github.com/my-repo

@RestController
class MetricsController {
    
    @Autowired
    private MeterRegistry registry;
    
    @GetMapping("/metrics")
    public Map<String, Collection<Measurement>> getMetrics() {
        return registry.getMeters();
    }
}

public class SecurityConfig extends WebSecurityConfigurerAdapter {
    ...
    @Override
    protected void configure(HttpSecurity httpSecurity) {
        httpSecurity.csrf().disable()
            .authorizeRequests()
            .antMatchers("/api/**").authenticated()
            .anyRequest().permitAll();
    }
}