mirror of
https://github.com/jangraefen/hcloud-pricing-exporter
synced 2024-11-10 05:54:15 +00:00
91 lines
2.9 KiB
Go
91 lines
2.9 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"log"
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"net/http"
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"os"
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"strings"
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"time"
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"github.com/hetznercloud/hcloud-go/hcloud"
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"github.com/jangraefen/hcloud-pricing-exporter/fetcher"
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"github.com/jtaczanowski/go-scheduler"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/prometheus/client_golang/prometheus/promhttp"
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)
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const (
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defaultPort = 8080
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defaultFetchInterval = 1 * time.Minute
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)
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var (
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hcloudAPIToken string
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port uint
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fetchInterval time.Duration
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additionalLabelsFlag string
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additionalLabels []string
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)
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func handleFlags() {
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flag.StringVar(&hcloudAPIToken, "hcloud-token", "", "the token to authenticate against the HCloud API")
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flag.UintVar(&port, "port", defaultPort, "the port that the exporter exposes its data on")
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flag.DurationVar(&fetchInterval, "fetch-interval", defaultFetchInterval, "the interval between data fetching cycles")
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flag.StringVar(&additionalLabelsFlag, "additional-labels", "", "comma separated additional labels to parse for all metrics, e.g: 'service,environment,owner'")
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flag.Parse()
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if hcloudAPIToken == "" {
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if envHCloudAPIToken, present := os.LookupEnv("HCLOUD_TOKEN"); present {
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hcloudAPIToken = envHCloudAPIToken
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}
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}
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if hcloudAPIToken == "" {
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panic(fmt.Errorf("no API token for HCloud specified, but required"))
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}
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additionalLabelsFlag = strings.TrimSpace(strings.ReplaceAll(additionalLabelsFlag, " ", ""))
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additionalLabelsSlice := strings.Split(additionalLabelsFlag, ",")
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if len(additionalLabelsSlice) > 0 && additionalLabelsSlice[0] != "" {
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additionalLabels = additionalLabelsSlice
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}
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}
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func main() {
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handleFlags()
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client := hcloud.NewClient(hcloud.WithToken(hcloudAPIToken))
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priceRepository := &fetcher.PriceProvider{Client: client}
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fetchers := fetcher.Fetchers{
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fetcher.NewFloatingIP(priceRepository, additionalLabels...),
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fetcher.NewPrimaryIP(priceRepository, additionalLabels...),
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fetcher.NewLoadbalancer(priceRepository, additionalLabels...),
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fetcher.NewLoadbalancerTraffic(priceRepository, additionalLabels...),
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fetcher.NewServer(priceRepository, additionalLabels...),
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fetcher.NewServerBackup(priceRepository, additionalLabels...),
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fetcher.NewServerTraffic(priceRepository, additionalLabels...),
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fetcher.NewSnapshot(priceRepository, additionalLabels...),
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fetcher.NewVolume(priceRepository, additionalLabels...),
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}
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fetchers.MustRun(client)
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scheduler.RunTaskAtInterval(func() { fetchers.MustRun(client) }, fetchInterval, 0)
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scheduler.RunTaskAtInterval(priceRepository.Sync, 10*fetchInterval, 10*fetchInterval)
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registry := prometheus.NewRegistry()
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fetchers.RegisterCollectors(registry)
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http.Handle("/metrics", promhttp.HandlerFor(registry, promhttp.HandlerOpts{}))
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log.Printf("Listening on: http://0.0.0.0:%d\n", port)
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server := &http.Server{
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Addr: fmt.Sprintf(":%d", port),
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ReadHeaderTimeout: 10 * time.Second,
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}
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if err := server.ListenAndServe(); err != nil {
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panic(err)
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}
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}
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