main.go

package main

import (
	"html/template"
	"log"
	"net/http"
	"os"

	_ "github.com/DTherHtun/k8smm-weblab/statik"
	"github.com/rakyll/statik/fs"
)

//Info is info
type Info struct {
	Title string
	Done  string
}

//InfoPageData is data
type InfoPageData struct {
	Color     string
	PageTitle string
	Infos     []Info
}

func main() {
	hostName, err := os.Hostname()
	if err != nil {
		panic(err)
	}

	statikFS, err := fs.New()
	if err != nil {
		log.Fatal(err)
	}

	fs := http.FileServer(statikFS)
	http.Handle("/static/", http.StripPrefix("/static/", fs))

	color := getEnv("COLOR", "powderblue")
	pgtitle := getEnv("PG_TITLE", "K8s User Group Myanmar!")

	tmpl := template.Must(template.ParseFiles("/go/bin/index.html"))
	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
		data := InfoPageData{
			Color:     color,
			PageTitle: pgtitle,
			Infos: []Info{
				{Title: "Pod Name - ", Done: hostName},
				{Title: "Host - ", Done: r.Host},
				{Title: "Remote Address - ", Done: r.RemoteAddr},
				{Title: "Request Method - ", Done: r.Method},
				{Title: "Request URL - ", Done: r.URL.String()},
				{Title: "Protocol - ", Done: r.Proto},
				{Title: "UserAgent - ", Done: r.UserAgent()},
			},
		}
		tmpl.Execute(w, data)
		log.Printf("--> %s %s 200", r.Method, r.URL.Path)
	})

	log.Fatal(http.ListenAndServe(":8080", nil))
}

func getEnv(key, defaultValue string) string {
	value := os.Getenv(key)
	if len(value) == 0 {
		return defaultValue
	}
	return value
}