nacos config的RequestLogAspect是什么

本篇内容主要讲解"nacos config的RequestLogAspect是什么"，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习"nacos config的RequestLogAspect是什么"吧!

序

本文主要研究一下nacos config的RequestLogAspect

RequestLogAspect

nacos-1.1.3/config/src/main/java/com/alibaba/nacos/config/server/aspect/RequestLogAspect.java

@Aspect@Componentpublic class RequestLogAspect {    /**     * publish config     */    private static final String CLIENT_INTERFACE_PUBLISH_SINGLE_CONFIG        = "execution(* com.alibaba.nacos.config.server.controller.ConfigController.publishConfig(..)) && args"        + "(request,response,dataId,group,tenant,content,..)";    /**     * get config     */    private static final String CLIENT_INTERFACE_GET_CONFIG        = "execution(* com.alibaba.nacos.config.server.controller.ConfigController.getConfig(..)) && args(request,"        + "response,dataId,group,tenant,..)";    /**     * remove config     */    private static final String CLIENT_INTERFACE_REMOVE_ALL_CONFIG        = "execution(* com.alibaba.nacos.config.server.controller.ConfigController.deleteConfig(..)) && args(request,"        + "response,dataId,group,tenant,..)";    /**     * publishSingle     */    @Around(CLIENT_INTERFACE_PUBLISH_SINGLE_CONFIG)    public Object interfacePublishSingle(ProceedingJoinPoint pjp, HttpServletRequest request,                                         HttpServletResponse response, String dataId, String group, String tenant,                                         String content) throws Throwable {        final String md5 = content == null ? null : MD5.getInstance().getMD5String(content);        MetricsMonitor.getPublishMonitor().incrementAndGet();        return logClientRequest("publish", pjp, request, response, dataId, group, tenant, md5);    }    /**     * removeAll     */    @Around(CLIENT_INTERFACE_REMOVE_ALL_CONFIG)    public Object interfaceRemoveAll(ProceedingJoinPoint pjp, HttpServletRequest request, HttpServletResponse response,                                     String dataId, String group, String tenant) throws Throwable {        return logClientRequest("remove", pjp, request, response, dataId, group, tenant, null);    }    /**     * getConfig     */    @Around(CLIENT_INTERFACE_GET_CONFIG)    public Object interfaceGetConfig(ProceedingJoinPoint pjp, HttpServletRequest request, HttpServletResponse response,                                     String dataId, String group, String tenant) throws Throwable {        final String groupKey = GroupKey2.getKey(dataId, group, tenant);        final String md5 = ConfigService.getContentMd5(groupKey);        MetricsMonitor.getConfigMonitor().incrementAndGet();        return logClientRequest("get", pjp, request, response, dataId, group, tenant, md5);    }    /**     * client api request log rt | status | requestIp | opType | dataId | group | datumId | md5     */    private Object logClientRequest(String requestType, ProceedingJoinPoint pjp, HttpServletRequest request,                                    HttpServletResponse response, String dataId, String group, String tenant,                                    String md5) throws Throwable {        final String requestIp = RequestUtil.getRemoteIp(request);        String appName = request.getHeader(RequestUtil.CLIENT_APPNAME_HEADER);        final long st = System.currentTimeMillis();        Object retVal = pjp.proceed();        final long rt = System.currentTimeMillis() - st;        // rt | status | requestIp | opType | dataId | group | datumId | md5 |        // appName        LogUtil.clientLog.info("{}|{}|{}|{}|{}|{}|{}|{}|{}", rt, retVal, requestIp, requestType, dataId, group, tenant,            md5, appName);        return retVal;    }}

• RequestLogAspect拦截了CLIENT_INTERFACE_PUBLISH_SINGLE_CONFIG、CLIENT_INTERFACE_GET_CONFIG、CLIENT_INTERFACE_REMOVE_ALL_CONFIG，它们都调用了logClientRequest方法，该方法会往日志打印客户端请求的信息

RequestUtil.getRemoteIp

nacos-1.1.3/config/src/main/java/com/alibaba/nacos/config/server/utils/RequestUtil.java

public class RequestUtil {    private static final String X_REAL_IP = "X-Real-IP";    private static final String X_FORWARDED_FOR = "X-Forwarded-For";    private static final String X_FORWARDED_FOR_SPLIT_SYMBOL = ",";    public static final String CLIENT_APPNAME_HEADER = "Client-AppName";    //......    public static String getRemoteIp(HttpServletRequest request) {        String xForwardedFor = request.getHeader(X_FORWARDED_FOR);        if (!StringUtils.isBlank(xForwardedFor)) {            return xForwardedFor.split(X_FORWARDED_FOR_SPLIT_SYMBOL)[0].trim();        }        String nginxHeader = request.getHeader(X_REAL_IP);        return StringUtils.isBlank(nginxHeader) ? request.getRemoteAddr() : nginxHeader;    }    //......}

• RequestUtil的getRemoteIp方法首先从header获取X_FORWARDED_FOR，如果该值不为空，则用X_FORWARDED_FOR_SPLIT_SYMBOL分割取第一个；如果该值为空则取X_REAL_IP，如果不为空则返回，为空则取request.getRemoteAddr()

小结

RequestLogAspect拦截了CLIENT_INTERFACE_PUBLISH_SINGLE_CONFIG、CLIENT_INTERFACE_GET_CONFIG、CLIENT_INTERFACE_REMOVE_ALL_CONFIG，它们都调用了logClientRequest方法，该方法会往日志打印客户端请求的信息

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