hello/main.go

package main

import (
	"flag"
	"fmt"
	"log"
	"os"
	"time"

	"github.com/loveuer/nf"
)

var (
	addr     string
	hostname string
)

func init() {
	flag.StringVar(&addr, "addr", ":80", "")
	flag.Parse()

	hostname = os.Getenv("HOSTNAME")
	if hostname == "" {
		hostname = fmt.Sprintf("unknown-%d", time.Now().UnixNano())
	}
}

func main() {
	app := nf.New()

	app.Use(func(c *nf.Ctx) error {
		c.SetHeader("U-HOSTNAME", hostname)
		return c.Next()
	})

	app.Get("/hello/:name", func(c *nf.Ctx) error {
		return c.JSON(nf.Map{
			"status": 200,
			"data": nf.Map{
				"name": c.Param("name"),
				"time": time.Now(),
				"host": hostname,
			},
		})
	})

	log.Fatal(app.Run(addr))
}