Add middleware to PD microservice

[HuSharp]

Enhancement Task

Currently, the API for microservice nodes(TSO/Scheduling) is implemented by the redirector and does not take into account the middleware of the API itself, such as audit logs.

redirector

pd/server/api/server.go

Lines 67 to 93 in f3602e3

	router.PathPrefix(apiPrefix).Handler(negroni.New(
	serverapi.NewRuntimeServiceValidator(svr, group),
	serverapi.NewRedirector(svr,
	serverapi.MicroserviceRedirectRule(
	prefix+"/admin/reset-ts",
	tsoapi.APIPathPrefix+"/admin/reset-ts",
	constant.TSOServiceName,
	[]string{http.MethodPost}),
	serverapi.MicroserviceRedirectRule(
	prefix+"/operators",
	scheapi.APIPathPrefix+"/operators",
	constant.SchedulingServiceName,
	[]string{http.MethodPost, http.MethodGet, http.MethodDelete}),
	serverapi.MicroserviceRedirectRule(
	prefix+"/checker", // Note: this is a typo in the original code
	scheapi.APIPathPrefix+"/checkers",
	constant.SchedulingServiceName,
	[]string{http.MethodPost, http.MethodGet}),
	serverapi.MicroserviceRedirectRule(
	prefix+"/region/id",
	scheapi.APIPathPrefix+"/config/regions",
	constant.SchedulingServiceName,
	[]string{http.MethodGet},
	func(r *http.Request) bool {
	// The original code uses the path "/region/id" to get the region id.
	// However, the path "/region/id" is used to get the region by id, which is not what we want.
	return strings.Contains(r.URL.Path, "label")

PD-API Middlewares

pd/server/api/middleware.go

Lines 37 to 43 in a766351

	func newServiceMiddlewareBuilder(s *server.Server) *serviceMiddlewareBuilder {
	return &serviceMiddlewareBuilder{
	svr: s,
	handlers: []negroni.Handler{newRequestInfoMiddleware(s), newAuditMiddleware(s), newRateLimitMiddleware(s)},
	}
	}

ref

#5766
#7178
#7078

[lhy1024]

Do we need to add them? cc @niubell @rleungx