code: func GetLog(r *http.Request) logrus.FieldLogger {
  	entry := middleware.GetLogEntry(r).(*rusLoggerEntry)
  	return entry.Logger
  }
docs: // Helper methods used by the application to get the request-scoped
  // logger entry and set additional fields between handlers.
  //
  // This is a useful pattern to use to set state on the entry as it
  // passes through the handler chain, which at any point can be logged
  // with a call to .Print(), .Info(), etc.