Log for language service

middleware/changeLanguage.js

@@ -32,7 +32,9 @@ function setup(service, should_execute) {
       return next();
     }
 
+    const start = Date.now();
     service(req, res, (err, translations) => {
+      const requestTime = Date.now() - start;
       // if there's an error, log it and bail
       if (err) {
         logger.info(`[middleware:language][error]`);
@@ -40,6 +42,12 @@ function setup(service, should_execute) {
         return next();
       }
 
+      logger.info({
+        time: requestTime,
+        language: req.clean.lang.iso6391,
+        service: 'language',
+      });
+
       // otherwise, update all the docs with translations
       updateDocs(req, res, _.defaultTo(translations, []));
       next();