package main

import (
	"encoding/json"
	"io/ioutil"
	"time"
	"log"
	"fmt"
	"github.com/yalp/jsonpath"
)

func main() {
	raw, err := ioutil.ReadFile("data.json")
	if err != nil {
		panic(err)
	}
	start := time.Now()
	var lastOut interface{}
	for i := 0; i < 1000; i++ {
		helloFilter, err := jsonpath.Prepare("$.orderStatusNotification.OMXTrackingID")

		if err != nil {
			panic(err)
		}

		var data interface{}
		if err = json.Unmarshal(raw, &data); err != nil {
			panic(err)
		}

		out, err  := helloFilter(data)
		lastOut=out
		if err != nil {
			panic(err)
		}
	}
	elapse:=time.Since(start)
	log.Printf("time use: %s",elapse);
	fmt.Print(lastOut)
}