Export from LogDNA with golang

logdna.go

package main

import (
	"errors"
	"flag"
	"io/ioutil"
	"log"
	"net/http"
	"os"
	"strconv"
	"time"
)

const (
	simpleDateFormat = "2006-01-02"
)

func main() {
	from := flag.String("from", "", "Log period starting time")
	to := flag.String("to", "", "Log period end time")
	tag := flag.String("tag", "", "LogDNA tag")
	apps := flag.String("apps", "", "List of apps")
	flag.Parse()

	apiKey := os.Getenv("LOGDNA_KEY")

	fromTime, err := time.Parse(simpleDateFormat, *from)
	if err != nil {
		log.Fatalln(err)
	}

	toTime, err := time.Parse(simpleDateFormat, *to)
	if err != nil {
		log.Fatalln(err)
	}

	client := &http.Client{}
	req, err := http.NewRequest("GET", "https://api.logdna.com/v1/export", nil)
	if err != nil {
		log.Fatalln(err)
	}

	req.SetBasicAuth(apiKey, ";")
	params := req.URL.Query()
	params.Add("from", strconv.FormatInt(fromTime.Unix(), 10))
	params.Add("to", strconv.FormatInt(toTime.Unix(), 10))
	params.Add("query", "tag:"+*tag)
	params.Add("apps", *apps)
	req.URL.RawQuery = params.Encode()

	req.Header.Set("User-Agent", "logdna-client")
	req.Header.Set("Content-Type", "application/json")

	resp, err := client.Do(req)
	if err != nil {
		log.Fatalln(err)
	}

	defer resp.Body.Close()
	respBytes, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		log.Fatalln(err)
	}
	if resp.StatusCode != http.StatusOK {
		log.Fatalln(errors.New(string(respBytes)))
	}

	log.Println(string(respBytes))
}