Spring Cloud Gateway打印请求的执行时间

港控/mmm° 2022-09-12 09:00 270阅读 0赞

具体需求：

> **使用spring cloud gateway作为网关，打印每个请求的执行时长**

具体实现：

> **自定义GlobalFilter，当请求进入时记录开始时间，当请求结束时，减去开始时间即为具体的执行时长**

package com.cicoding.gateway.filter;
     
    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.springframework.cloud.gateway.filter.GatewayFilterChain;
    import org.springframework.cloud.gateway.filter.GlobalFilter;
    import org.springframework.core.Ordered;
    import org.springframework.stereotype.Component;
    import org.springframework.web.server.ServerWebExchange;
    import reactor.core.publisher.Mono;
     
    /**
     * 打印请求参数及统计执行时长过滤器
     * @Version V1.0
     */
    @Component
    public class LoggingFilter implements GlobalFilter, Ordered {
     
        private static final Log logger = LogFactory.getLog(LoggingFilter.class);
        private static final String START_TIME = "startTime";
     
        public LoggingFilter() {
            logger.info("Loaded GlobalFilter [Logging]");
        }
     
        @Override
        public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
            String info = String.format("Method:{%s} Host:{%s} Path:{%s} Query:{%s}",
                    exchange.getRequest().getMethod().name(),
                    exchange.getRequest().getURI().getHost(),
                    exchange.getRequest().getURI().getPath(),
                    exchange.getRequest().getQueryParams());
     
            logger.info(info);
     
            exchange.getAttributes().put(START_TIME, System.currentTimeMillis());
            return chain.filter(exchange).then( Mono.fromRunnable(() -> {
                Long startTime = exchange.getAttribute(START_TIME);
                if (startTime != null) {
                    Long executeTime = (System.currentTimeMillis() - startTime);
                    logger.info(exchange.getRequest().getURI().getRawPath() + " : " + executeTime + "ms");
                }
            }));
        }
     
        @Override
        public int getOrder() {
            return Ordered.LOWEST_PRECEDENCE;
        }
    }

当网关启动后，访问网关，可以看到如下的打印信息

2018-08-31 18:35:02.644  INFO 14376 --- [ctor-http-nio-2] c.w.gateway.filter.LoggingFilter       : Method:{POST} Host:{127.0.0.1} Path:{/api/authorize} Query:{
       {}}
    2018-08-31 18:35:02.678  INFO 14376 --- [ctor-http-nio-3] c.w.gateway.filter.LoggingFilter       : /api/authorize : 34ms