Refactor log (#3446)

* Refactor log

* Add new log methods

* Fix logger test

* Change all logging code

* Clean up pathObj

* Rebase to latest main

* Remove invoking method name after the dot

common/buf/reader.go

@@ -21,7 +21,7 @@ func readOneUDP(r io.Reader) (*Buffer, error) {
 	}
 
 	b.Release()
-	return nil, newError("Reader returns too many empty payloads.")
+	return nil, errors.New("Reader returns too many empty payloads.")
 }
 
 // ReadBuffer reads a Buffer from the given reader.