spring-cloud-gateway환경에서 도메인에 따라 특정 서비스에 대해 테스트서버로 연결합니다

TestableGatewayFilter.java

package your.package;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.cloud.gateway.route.Route;
import org.springframework.cloud.gateway.support.ServerWebExchangeUtils;
import org.springframework.core.Ordered;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;

import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR;

@Component
public class TestableGatewayFilter implements GlobalFilter, Ordered {
    @Autowired
    private DiscoveryClient discoveryClient;

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        URI requestUri = exchange.getRequest().getURI();
        Route route = (Route)exchange.getAttribute(ServerWebExchangeUtils.GATEWAY_ROUTE_ATTR);
        List<ServiceInstance> serviceInstanceList = discoveryClient.getInstances(route.getUri().getHost());

        System.out.println("requestUri " + requestUri.toString());

        if(serviceInstanceList.size() > 0) {
            for (ServiceInstance serviceInstance : serviceInstanceList) {
                String testDomain = serviceInstance.getMetadata().get("test-domain");
                if (testDomain != null) {
                    if (testDomain.equalsIgnoreCase(requestUri.getHost()) || true) {
                        try {
                            URI newUri = new URI(requestUri.getScheme(), requestUri.getUserInfo(), serviceInstance.getHost(), serviceInstance.getPort(), requestUri.getPath(), requestUri.getQuery(), requestUri.getFragment());
                            exchange.getAttributes().put(GATEWAY_REQUEST_URL_ATTR, newUri);
                            System.out.println("Redirect to test server : " + requestUri.toString() + " => " + exchange.getAttribute(GATEWAY_REQUEST_URL_ATTR));
                            break;
                        } catch (URISyntaxException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        }
        return chain.filter(exchange);
    }

    @Override
    public int getOrder() {
        return LOWEST_PRECEDENCE;
    }
}

답변 정말 감사드립니다. 아무래도 ReactiveLoadBalancerClientFilter가 GlobalFilter 필터를 상속받고 있어 [글로벌필터] -> [개별필터] -> [개별필터 종료] -> [글로벌필터 종료] 순서로 진행되는 SCG에서 개별 필터가 Order를 통해 10150 이전의 순서를 가지기 어려워보입니다. 다른 방법이 있는지 찾아보겠지만 답변 감사드립니다.