mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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973bbd16b0
This should prevent from connection leaks See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/4724
163 lines
5 KiB
Go
163 lines
5 KiB
Go
package digitalocean
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import (
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"flag"
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"fmt"
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"net/url"
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"strings"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/logger"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape/discoveryutils"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/proxy"
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)
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// SDCheckInterval defines interval for targets refresh.
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var SDCheckInterval = flag.Duration("promscrape.digitaloceanSDCheckInterval", time.Minute, "Interval for checking for changes in digital ocean. "+
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"This works only if digitalocean_sd_configs is configured in '-promscrape.config' file. "+
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"See https://docs.victoriametrics.com/sd_configs.html#digitalocean_sd_configs for details")
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// SDConfig represents service discovery config for digital ocean.
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//
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// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#digitalocean_sd_config
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type SDConfig struct {
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Server string `yaml:"server,omitempty"`
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HTTPClientConfig promauth.HTTPClientConfig `yaml:",inline"`
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ProxyURL *proxy.URL `yaml:"proxy_url,omitempty"`
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ProxyClientConfig promauth.ProxyClientConfig `yaml:",inline"`
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Port int `yaml:"port,omitempty"`
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}
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// GetLabels returns Digital Ocean droplet labels according to sdc.
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func (sdc *SDConfig) GetLabels(baseDir string) ([]*promutils.Labels, error) {
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cfg, err := getAPIConfig(sdc, baseDir)
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if err != nil {
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return nil, fmt.Errorf("cannot get API config: %w", err)
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}
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droplets, err := getDroplets(cfg.client.GetAPIResponse)
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if err != nil {
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return nil, err
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}
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return addDropletLabels(droplets, cfg.port), nil
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}
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// https://developers.digitalocean.com/documentation/v2/#retrieve-an-existing-droplet-by-id
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type droplet struct {
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ID int `json:"id"`
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Name string `json:"name"`
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Status string `json:"status"`
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Features []string `json:"features"`
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Image struct {
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Name string `json:"name"`
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Slug string `json:"slug"`
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} `json:"image"`
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SizeSlug string `json:"size_slug"`
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Networks networks `json:"networks"`
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Region struct {
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Slug string `json:"slug"`
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} `json:"region"`
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Tags []string `json:"tags"`
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VpcUUID string `json:"vpc_uuid"`
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}
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func (d *droplet) getIPByNet(netVersion, netType string) string {
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var dropletNetworks []network
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switch netVersion {
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case "v4":
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dropletNetworks = d.Networks.V4
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case "v6":
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dropletNetworks = d.Networks.V6
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default:
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logger.Fatalf("BUG, unexpected network type: %s, want v4 or v6", netVersion)
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}
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for _, net := range dropletNetworks {
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if net.Type == netType {
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return net.IPAddress
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}
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}
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return ""
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}
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type networks struct {
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V4 []network `json:"v4"`
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V6 []network `json:"v6"`
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}
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type network struct {
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IPAddress string `json:"ip_address"`
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// private | public.
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Type string `json:"type"`
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}
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// https://developers.digitalocean.com/documentation/v2/#list-all-droplets
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type listDropletResponse struct {
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Droplets []droplet `json:"droplets,omitempty"`
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Links links `json:"links,omitempty"`
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}
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type links struct {
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Pages struct {
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Last string `json:"last,omitempty"`
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Next string `json:"next,omitempty"`
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} `json:"pages,omitempty"`
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}
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func (r *listDropletResponse) nextURLPath() (string, error) {
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if r.Links.Pages.Next == "" {
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return "", nil
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}
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u, err := url.Parse(r.Links.Pages.Next)
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if err != nil {
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return "", fmt.Errorf("cannot parse digital ocean next url: %s, err: %s", r.Links.Pages.Next, err)
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}
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return u.RequestURI(), nil
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}
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func addDropletLabels(droplets []droplet, defaultPort int) []*promutils.Labels {
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var ms []*promutils.Labels
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for _, droplet := range droplets {
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if len(droplet.Networks.V4) == 0 {
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continue
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}
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privateIPv4 := droplet.getIPByNet("v4", "private")
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publicIPv4 := droplet.getIPByNet("v4", "public")
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publicIPv6 := droplet.getIPByNet("v6", "public")
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addr := discoveryutils.JoinHostPort(publicIPv4, defaultPort)
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m := promutils.NewLabels(16)
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m.Add("__address__", addr)
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m.Add("__meta_digitalocean_droplet_id", fmt.Sprintf("%d", droplet.ID))
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m.Add("__meta_digitalocean_droplet_name", droplet.Name)
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m.Add("__meta_digitalocean_image", droplet.Image.Slug)
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m.Add("__meta_digitalocean_image_name", droplet.Image.Name)
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m.Add("__meta_digitalocean_private_ipv4", privateIPv4)
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m.Add("__meta_digitalocean_public_ipv4", publicIPv4)
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m.Add("__meta_digitalocean_public_ipv6", publicIPv6)
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m.Add("__meta_digitalocean_region", droplet.Region.Slug)
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m.Add("__meta_digitalocean_size", droplet.SizeSlug)
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m.Add("__meta_digitalocean_status", droplet.Status)
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m.Add("__meta_digitalocean_vpc", droplet.VpcUUID)
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if len(droplet.Features) > 0 {
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features := fmt.Sprintf(",%s,", strings.Join(droplet.Features, ","))
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m.Add("__meta_digitalocean_features", features)
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}
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if len(droplet.Tags) > 0 {
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tags := fmt.Sprintf(",%s,", strings.Join(droplet.Tags, ","))
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m.Add("__meta_digitalocean_tags", tags)
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}
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ms = append(ms, m)
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}
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return ms
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}
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// MustStop stops further usage for sdc.
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func (sdc *SDConfig) MustStop() {
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v := configMap.Delete(sdc)
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if v != nil {
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cfg := v.(*apiConfig)
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cfg.client.Stop()
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}
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}
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