SpringSpring CloudGateway

Spring Cloud - 5. Spring Cloud Gateway Global Filter 적용

Spring Cloud로 개발하는 마이크로서비스 애플리케이션 5 - Spring Cloud Gateway Global Filter 적용

공통적으로 실행될 수 있는 Filter. 라우팅 정보마다 개별적으로 필터를 지정해야 하는 Custom Filter와 다르게 Global Filter의 경우 한번에 처리를 할 수 있다.

GlobalFilter.java

@Component
@Slf4j
public class GlobalFilter extends AbstractGatewayFilterFactory<GlobalFilter.Config> {
    public GlobalFilter(){
        super(Config.class);
    }

    @Override
    public GatewayFilter apply(Config config) {
        // Custom Pre Filter
        return (exchange, chain) -> {
            ServerHttpRequest request = exchange.getRequest();
            ServerHttpResponse response = exchange.getResponse();

            log.info("Global Filter baseMessage : {}", request.getId());

            if(config.isPreLogger()){
                log.info("Global Filter Start: request id -> {}", request.getId());
            }
            // Custom Post Filter
            return chain.filter(exchange).then(Mono.fromRunnable(() -> {
                if(config.isPostLogger()){
                    log.info("Global Filter End: response code -> {}", response.getStatusCode());
                }
            }));
        };
    }

    @Data
    public static class Config{
        // Put the configuration properties
        private String baseMessage;
        private boolean preLogger;
        private boolean postLogger;
    }
}

application.yml

spring:
  application:
    name: apigateway-service
  cloud:
    gateway:
      default-filters:
        - name: GlobalFilter
          args:
            baseMessage: Spring Cloud Gateway GlobalFilter
            preLogger: true
            postLogger: true
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