Optimizations (#4135)

* removes costly json serialization to InMemoryCacheAdapter

* Always cache a copy of the array

* Use own mapValues

* Makes sure we dont make unnecessary calls to the logger

* Do not bypass loggers with silent logging (only applies to stdout)

* warn is not warning

* use ===

* Wrap logRequest / logResponse in the loggerController for more granular control

Also give the ability to pass functions to the logger so we don't serialize too early in JSON (costly)

* reconfiguring winston would override the transports levels and make subsequent tests fail

src/Auth.js

@@ -135,7 +135,7 @@ Auth.prototype._loadRoles = function() {
         this.fetchedRoles = true;
         this.rolePromise = null;
 
-        cacheAdapter.role.put(this.user.id, this.userRoles);
+        cacheAdapter.role.put(this.user.id, Array(...this.userRoles));
         return Promise.resolve(this.userRoles);
       }
       var rolesMap = results.reduce((m, r) => {
@@ -152,8 +152,7 @@ Auth.prototype._loadRoles = function() {
           });
           this.fetchedRoles = true;
           this.rolePromise = null;
-
-          cacheAdapter.role.put(this.user.id, this.userRoles);
+          cacheAdapter.role.put(this.user.id, Array(...this.userRoles));
           return Promise.resolve(this.userRoles);
         });
     });