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This article mainly explains "what is the RequestLogAspect of nacos config". Interested friends may wish to have a look at it. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn "what is the RequestLogAspect of nacos config"?

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This paper mainly studies the RequestLogAspect of nacos config.

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 intercepts CLIENT_INTERFACE_PUBLISH_SINGLE_CONFIG, CLIENT_INTERFACE_GET_CONFIG, and CLIENT_INTERFACE_REMOVE_ALL_CONFIG, which all call the logClientRequest method, which prints the information requested by the client to the log.

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;} / /.

The getRemoteIp method of RequestUtil first gets the X_FORWARDED_FOR from header, and splits the first one with X_FORWARDED_FOR_SPLIT_SYMBOL if the value is not empty; X_REAL_IP if the value is empty, returns if it is not empty, and request.getRemoteAddr () if empty

Summary

RequestLogAspect intercepts CLIENT_INTERFACE_PUBLISH_SINGLE_CONFIG, CLIENT_INTERFACE_GET_CONFIG, and CLIENT_INTERFACE_REMOVE_ALL_CONFIG, which all call the logClientRequest method, which prints the information requested by the client to the log.

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