spacepanel_aggregator/poll.go

package main

import (
	"crypto/tls"
	"errors"
	"io/ioutil"
	"net/http"
	"time"

	"github.com/sirupsen/logrus"
	"github.com/valyala/fastjson"
)

const (
	SleepTime = time.Minute
)

var (
	insecureTransport = &http.Transport{
		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
	}

	client = &http.Client{
		Transport: insecureTransport,
	}
)

func StartPollWorker(space *Space) {
	for {
		state, err := requestSpaceState(space.URL)
		if err != nil {
			logrus.Errorf("URL: %s, Err: %v", space.URL, err)
		}
		space.State = state
		time.Sleep(SleepTime)
	}
}

func requestSpaceState(url string) (State, error) {
	req, err := http.NewRequest("GET", url, nil)
	if err != nil {
		return Unknown, err
	}

	resp, err := client.Do(req)
	if err != nil {
		return Unknown, err
	}
	defer resp.Body.Close()

	data, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		return Unknown, err
	}

	value, err := fastjson.ParseBytes(data)
	if err != nil {
		return Unknown, err
	}

	if !value.Exists("state", "open") {
		return Unknown, errors.New("no space state existing")
	}

	state := value.GetBool("state", "open")

	if state {
		return Open, nil
	}

	return Close, nil
}