InternalApiBlockGlobalFilter.java

package com.ecommerce.gateway.filter;

import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.util.Arrays;

@Component
public class InternalApiBlockGlobalFilter implements GlobalFilter, Ordered {

    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        boolean internalPath = Arrays.stream(exchange.getRequest().getPath().pathWithinApplication()
                        .value().split("/"))
                .anyMatch("internal"::equals);
        if (!internalPath) {
            return chain.filter(exchange);
        }
        exchange.getResponse().setStatusCode(HttpStatus.NOT_FOUND);
        return exchange.getResponse().setComplete();
    }

    @Override
    public int getOrder() {
        return HIGHEST_PRECEDENCE + 20;
    }
}