index.go

c := appengine.NewContext(r)
	client := urlfetch.Client(c)
	resp, err := client.Get("https://api.instagram.com/v1/media/popular?client_id=01f47c48216e42d3a9e4d2756cdbc7cb")
	if err != nil {
		http.Error(w, err.Error(), http.StatusInternalServerError)
		return
	}
	body, bodyErr := ioutil.ReadAll(resp.Body)
	if bodyErr != nil {
		http.Error(w, bodyErr.Error(), http.StatusInternalServerError)
	}
	defer resp.Body.Close()

	var m Meta
	err2 := json.Unmarshal(body, &m)
	if err2 != nil {
		fmt.Fprintln(os.Stderr, err2)
	} else {
		fmt.Fprintf(w, m.Meta.Code)
	}