warmup.go

package main

import (
	"fmt"
	"net/http"
	"os"
	"time"
)

func main() {
	for i := 0; i < 15; i++ {
		port := os.Getenv("PORT")
		res, err := http.Get(fmt.Sprintf("http://localhost:%s", port))
		if err == nil && res.StatusCode != 500 {
			fmt.Println("app up")
			os.Exit(0)
		}

		time.Sleep(1 * time.Second)
	}

	fmt.Println("app never came up")
	os.Exit(1)
}