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

spec/LoggerController.spec.js

@@ -88,4 +88,28 @@ describe('LoggerController', () => {
     }).toThrow();
     done();
   });
+
+  it('should replace implementations with verbose', (done) => {
+    const adapter = new WinstonLoggerAdapter();
+    const logger = new LoggerController(adapter, null, {verbose: true });
+    spyOn(adapter, "log");
+    logger.silly('yo!');
+    expect(adapter.log).not.toHaveBeenCalled();
+    done();
+  });
+
+  it('should replace implementations with logLevel', (done) => {
+    const adapter = new WinstonLoggerAdapter();
+    const logger = new LoggerController(adapter, null, { logLevel: 'error' });
+    spyOn(adapter, "log");
+    logger.warn('yo!');
+    logger.info('yo!');
+    logger.debug('yo!');
+    logger.verbose('yo!');
+    logger.silly('yo!');
+    expect(adapter.log).not.toHaveBeenCalled();
+    logger.error('error');
+    expect(adapter.log).toHaveBeenCalled();
+    done();
+  });
 });