iris/_examples/logging/request-logger/accesslog/main.go

package main // See https://github.com/kataras/iris/issues/1601

import (
	"time"

	"github.com/kataras/iris/v12"
	"github.com/kataras/iris/v12/middleware/accesslog"

	rotatelogs "github.com/lestrrat-go/file-rotatelogs"
)

func main() {
	pathToAccessLog := "./access_log.%Y%m%d%H%M"
	w, err := rotatelogs.New(
		pathToAccessLog,
		rotatelogs.WithMaxAge(24*time.Hour),
		rotatelogs.WithRotationTime(time.Hour))
	if err != nil {
		panic(err)
	}
	ac := accesslog.New(w)
	ac.TimeFormat = "2006-01-02 15:04:05"

	/*
		Use a file directly:
		ac := accesslog.File("./access.log")

		Log after the response was sent (defaults to false):
		ac.Async = true

		Force-protect writer with locks.
		On this example this is not required:
		ac.LockWriter = true"

		// To disable request and response calculations
		// (enabled by default but slows down the whole operation if Async is false):
		ac.RequestBody = false
		ac.ResponseBody = false
		ac.BytesReceived = false
		ac.BytesSent = false

		Add second output:
		ac.AddOutput(app.Logger().Printer)

		Change format (after output was set):
		ac.SetFormatter(&accesslog.JSON{Indent: "  "})

		Modify the output format and customize the order
		with the Template formatter:
		ac.SetFormatter(&accesslog.Template{
		    Text: "{{.Now.Format .TimeFormat}}|{{.Latency}}|{{.Method}}|{{.Path}}|{{.RequestValuesLine}}|{{.Code}}|{{.BytesReceivedLine}}|{{.BytesSentLine}}|{{.Request}}|{{.Response}}|\n",
		    // Default ^
		})

		Set custom request fields:
		ac.AddField(func(ctx iris.Context) (string, interface{}) {
		    v := ctx.RemoteAddr()
		    if v == "" {
		        return "", nil
		    }
		    // the log entry name and its value.
		    return "IP", v
		})
	*/

	defer ac.Close()
	iris.RegisterOnInterrupt(func() {
		ac.Close()
	})

	app := iris.New()
	// Register the middleware (UseRouter to catch http errors too).
	app.UseRouter(ac.Handler)
	//

	// Register some routes...
	app.HandleDir("/", iris.Dir("./public"))

	app.Get("/user/{username}", userHandler)
	app.Post("/read_body", readBodyHandler)
	app.Get("/html_response", htmlResponse)
	//

	app.Listen(":8080")
}

func readBodyHandler(ctx iris.Context) {
	var request interface{}
	if err := ctx.ReadBody(&request); err != nil {
		ctx.StopWithPlainError(iris.StatusBadRequest, err)
		return
	}

	ctx.JSON(iris.Map{"message": "OK", "data": request})
}

func userHandler(ctx iris.Context) {
	ctx.Writef("Hello, %s!", ctx.Params().Get("username"))
}

func htmlResponse(ctx iris.Context) {
	ctx.HTML("<h1>HTML Response</h1>")
}