ludc
2023-09-17 fbdbcfab736a7d6ed18e032ed65cf981bbc50ee9
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/*
 *      Copyright (c) 2018-2028, DreamLu All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  Neither the name of the dreamlu.net developer nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *  Author: DreamLu 卢春梦 (596392912@qq.com)
 */
package com.vci.ubcs.gateway.filter;
 
import com.alibaba.nacos.common.utils.StringUtils;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.actuate.autoconfigure.endpoint.web.WebEndpointProperties;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.http.HttpHeaders;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.util.MultiValueMap;
import org.springframework.web.server.ServerWebExchange;
import org.springframework.web.util.UriComponentsBuilder;
import reactor.core.publisher.Mono;
 
import java.util.ArrayList;
import java.util.List;
 
/**
 * webflux 相应日志,方便开发调试,注意排序要优先。
 *
 * @author dream.lu
 */
@Slf4j
@Configuration(proxyBeanMethods = false)
@RequiredArgsConstructor
@ConditionalOnProperty(value = "blade.log.request.enabled", havingValue = "true", matchIfMissing = true)
public class GlobalResponseLogFilter implements GlobalFilter, Ordered {
    private final WebEndpointProperties endpointProperties;
 
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        ServerHttpRequest request = exchange.getRequest();
        // 打印请求路径
        String path = request.getPath().pathWithinApplication().value();
        // 忽略 endpoint 请求
        String endpointBasePath = endpointProperties.getBasePath();
        if (StringUtils.isNotBlank(endpointBasePath) && path.startsWith(endpointBasePath)) {
            return chain.filter(exchange);
        }
        return chain.filter(exchange).then(
            Mono.fromRunnable(() -> {
                MultiValueMap<String, String> queryParams = request.getQueryParams();
                String requestUrl = UriComponentsBuilder.fromPath(path).queryParams(queryParams).build().toUriString();
 
                // 构建成一条长 日志,避免并发下日志错乱
                StringBuilder responseLog = new StringBuilder(300);
                // 日志参数
                List<Object> responseArgs = new ArrayList<>();
                responseLog.append("\n\n================ Gateway Response Start  ================\n");
                ServerHttpResponse response = exchange.getResponse();
                // 打印路由 200 get: /api/xxx/xxx
                responseLog.append("<=== {} {}: {}\n");
                // 参数
                String requestMethod = request.getMethodValue();
                responseArgs.add(response.getStatusCode().value());
                responseArgs.add(requestMethod);
                responseArgs.add(requestUrl);
 
                // 打印请求头
                HttpHeaders headers = response.getHeaders();
                headers.forEach((headerName, headerValue) -> {
                    responseLog.append("===Headers===  {}: {}\n");
                    responseArgs.add(headerName);
                    responseArgs.add(headerValue.toArray());
                });
 
                responseLog.append("================  Gateway Response End  =================\n");
                // 打印执行时间
                log.info(responseLog.toString(), responseArgs.toArray());
            })
        );
    }
 
    @Override
    public int getOrder() {
        return Ordered.HIGHEST_PRECEDENCE;
    }
}