SpringSpring 고급편Proxy 패턴

Spring 핵심원리 고급편 - Proxy 패턴 인터페이스 없는 없는 구체 클래스

목차

Spring 핵심원리 고급편 - Proxy Pattern 인터페이스 없는 없는 구체 클래스

Repository

public class OrderRepositoryV2 {
    public void save(String itemId) {
        if(itemId.equals("ex")){
            throw new IllegalStateException("예외 발생!");
        }
        sleep(1000);
    }

    private void sleep(int millis) {
        try {
            Thread.sleep(millis);
        }catch (InterruptedException ex){
            ex.printStackTrace();
        }
    }
}

Service

public class OrderServiceV2 {

    private final OrderRepositoryV2 orderRepository;

    public OrderServiceV2(OrderRepositoryV2 orderRepository) {
        this.orderRepository = orderRepository;
    }

    public void orderItem(String itemId) {
        orderRepository.save(itemId);
    }
}

Controller

@Slf4j
@RequestMapping
@ResponseBody
public class OrderControllerV2 {
    private final OrderServiceV2 orderService;

    public OrderControllerV2(OrderServiceV2 orderService) {
        this.orderService = orderService;
    }

    @GetMapping("/v2/request")
    public String request(String itemId) {
        orderService.orderItem(itemId);
        return "ok";
    }

    @GetMapping("/v2/no-log")
    public String noLog() {
        return "ok";
    }
}

Bean 등록

@Configuration
public class AppV2Config {

    @Bean
    public OrderControllerV2 orderControllerV2(){
        return new OrderControllerV2(orderServiceV2());
    }

    @Bean
    public OrderServiceV2 orderServiceV2(){
        return new OrderServiceV2(orderRepositoryV2());
    }

    @Bean
    public OrderRepositoryV2 orderRepositoryV2(){
        return new OrderRepositoryV2();
    }
}
//@Import(AppV1Config.class)
@Import({AppV1Config.class, AppV2Config.class})
@SpringBootApplication(scanBasePackages = "hello.proxy.app") //주의
public class ProxyApplication {

    public static void main(String[] args) {
        SpringApplication.run(ProxyApplication.class, args);
    }

}
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