package main

import (
   "fmt"
   "github.com/robfig/cron"
   "io/ioutil"
   "net/http"
)

func main() {
   c := cron.New()
   //c.AddFunc("*/10 * * * * ?", func() { fmt.Println("this is message") })
   c.AddFunc("*/20 * * * * ?", getRequest)
   c.Start()
   select {
   }
}

func getRequest() {
   resp, err := http.Get("https://xxxxxxxxxx")

   if err != nil {
      fmt.Println("http.Get err=",err)
      return
   }

   bytes, err := ioutil.ReadAll(resp.Body)

   if err != nil {
      fmt.Println("ioutil.ReadAll err=",err)
      return
   }
   fmt.Println(string(bytes))
}