virtigod/http.go

package main

import (
	"fmt"
	"net/http"
	"os"
	"strings"

	"go.wit.com/lib/gui/shell"
	"go.wit.com/log"
)

// remove '?' part and trailing '/'
func cleanURL(url string) string {
	url = "/" + strings.Trim(url, "/")
	return url
}

func okHandler(w http.ResponseWriter, r *http.Request) {
	var tmp string

	log.Info("Got URL Path: ", r.URL.Path)
	log.Info("Got URL Query:", r.URL.Query().Get("start"))

	tmp = cleanURL(r.URL.Path)

	log.Info("Got URL:", tmp)
	if tmp == "/" {
		fmt.Fprintln(w, "OK")
		return
	}
	if tmp == "/me" {
		j, err := dumpJsonClient(r)
		if err != nil {
			fmt.Fprintln(w, "BAD ZOOT")
			return
		}
		fmt.Fprintln(w, j)
		return
	}
	if tmp == "/kill" {
		log.Warn("KILLED")
		fmt.Fprintln(w, "KILLED")
		os.Exit(-1)
		return
	}

	if tmp == "/vms" {
		s := poolHypervisor(hv)
		fmt.Fprint(w, s)
		return
	}

	if tmp == "/start" {
		start := r.URL.Query().Get("start")
		xml := "/root/jcarr/machines/autostart/" + start + ".xml"
		cmd := []string{"virsh", "create", xml}

		fmt.Fprintln(w, "Handling URL:", tmp, "start droplet")
		log.Warn("cmd :", cmd)

		fmt.Fprintln(w, "Handling URL:", tmp, "start droplet")
		fmt.Fprintln(w, "cmd: ", cmd)
		err, ok, output := shell.RunCmd("/home/", cmd)
		shell.Run(cmd)
		if ok {
			fmt.Fprintln(w, "START OK")
			fmt.Fprintln(w, output)
		} else {
			fmt.Fprintln(w, "START FAILED")
			fmt.Fprintln(w, "error =", err)
			fmt.Fprintln(w, "output =", output)
		}
		return
	}

	if tmp == "/favicon.ico" {
		writeFile(w, "ipv6.png")
		return
	}
	if tmp == "/uptime" {
		writeFile(w, "uptime.html")
		return
	}

	// used for uptime monitor checking (like Kuma)
	if tmp == "/uptime" {
		writeFile(w, "uptime.html")
		return
	}
	log.Warn("BAD URL =", tmp)
	fmt.Fprintln(w, "BAD ZOOT")
	// badurl(w, r.URL.String())
	// fmt.Fprintln(w, "BAD", tmp)
}

func writeFile(w http.ResponseWriter, filename string) {
	// fmt.Fprintln(w, "GOT TEST?")
	fullname := "resources/" + filename
	pfile, err := resources.ReadFile(fullname)
	if err != nil {
		log.Println("ERROR:", err)
		// w.Write(pfile)
		return
	}

	var repohtml string
	repohtml = string(pfile)
	if filename == "goReference.svg" {
		w.Header().Set("Content-Type", "image/svg+xml")
	}
	fmt.Fprintln(w, repohtml)
	log.Println("writeFile() found internal file:", filename)
}

// starts and sits waiting for HTTP requests
func startHTTP() {
	http.HandleFunc("/", okHandler)

	p := fmt.Sprintf(":%d", argv.Port)
	log.Println("Running on port", p)

	err := http.ListenAndServe(p, nil)
	if err != nil {
		log.Println("Error starting server:", err)
	}
}