adding rate limit middlewware to named maps controller

lib/cartodb/controllers/named_maps.js

@@ -3,6 +3,7 @@ const cors = require('../middleware/cors');
 const userMiddleware = require('../middleware/user');
 const allowQueryParams = require('../middleware/allow-query-params');
 const vectorError = require('../middleware/vector-error');
+const { rateLimitMiddleware, RATE_LIMIT_ENDPOINTS_GROUPS } = require('../middleware/rate-limit');
 
 const DEFAULT_ZOOM_CENTER = {
     zoom: 1,
@@ -45,6 +46,7 @@ NamedMapsController.prototype.register = function(app) {
         app.base_url_templated + '/:template_id/:layer/:z/:x/:y.(:format)',
         cors(),
         userMiddleware,
+        rateLimitMiddleware(this.metadataBackend, RATE_LIMIT_ENDPOINTS_GROUPS.ENDPOINT_17),
         this.prepareContext,
         this.getNamedMapProvider('NAMED_MAP_TILE'),
         this.getAffectedTables(),
@@ -62,6 +64,7 @@ NamedMapsController.prototype.register = function(app) {
         app.base_url_mapconfig + '/static/named/:template_id/:width/:height.:format',
         cors(),
         userMiddleware,
+        rateLimitMiddleware(this.metadataBackend, RATE_LIMIT_ENDPOINTS_GROUPS.ENDPOINT_3),
         allowQueryParams(['layer', 'zoom', 'lon', 'lat', 'bbox']),
         this.prepareContext,
         this.getNamedMapProvider('STATIC_VIZ_MAP'),