Zap logger

[SebastianStehle]

Has someone already implemented the logger interface using zap?

I am so confused about the signature of the logger interface with all the methods like SetLevel, SetOutput and so on.

[aldas]

You are better off not using c.Logger and e.Logger and passing logger instance down in your "services" and have it extract Request IDs etc from context.

You can check other loggers implementations how they implement Echo Logger interface. For example this is Zerolog implementation https://github.com/ziflex/lecho/blob/master/logger.go

Internally Echo uses only few methods from that interface:

• SetLevel when e.DEbug = true which you probably do not use and when e.Start* methods are used which you do not need as you are better off using http.Server directly as this gives you better configuration options.

Example:

func main() {
	e := echo.New()

	s := http.Server{
		Addr:    ":8080",
		Handler: e,
		// and other handy fields to configure timeout etc
	}

	if err := s.ListenAndServe(); err != nil && !errors.Is(err, http.ErrServerClosed) {
		log.Fatal(err)
	}
}

• Output to get writer from logger
• Error is called by DefaultHTTPErrorHandler
• Errorf is called by router
• Warn is called when to warn about double sending the headers
• Recovery middleware uses different level methods but you are better off providing you own RecoverConfig.LogErrorFunc