mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
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be6da5053f
- Return meta-labels for the discovered targets via promutils.Labels instead of map[string]string. This improves the speed of generating meta-labels for discovered targets by up to 5x. - Remove memory allocations in hot paths during ScrapeWork generation. The ScrapeWork contains scrape settings for a single discovered target. This improves the service discovery speed by up to 2x.
89 lines
2.4 KiB
Go
89 lines
2.4 KiB
Go
package openstack
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import (
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"encoding/json"
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"fmt"
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"path"
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"strconv"
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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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)
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// See https://docs.openstack.org/api-ref/compute/#list-hypervisors-details
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type hypervisorDetail struct {
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Hypervisors []hypervisor `json:"hypervisors"`
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Links []struct {
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HREF string `json:"href"`
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Rel string `json:"rel,omitempty"`
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} `json:"hypervisors_links,omitempty"`
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}
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type hypervisor struct {
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HostIP string `json:"host_ip"`
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ID int `json:"id"`
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Hostname string `json:"hypervisor_hostname"`
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Status string `json:"status"`
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State string `json:"state"`
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Type string `json:"hypervisor_type"`
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}
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func parseHypervisorDetail(data []byte) (*hypervisorDetail, error) {
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var hvsd hypervisorDetail
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if err := json.Unmarshal(data, &hvsd); err != nil {
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return nil, fmt.Errorf("cannot parse hypervisorDetail: %w", err)
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}
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return &hvsd, nil
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}
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func (cfg *apiConfig) getHypervisors() ([]hypervisor, error) {
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creds, err := cfg.getFreshAPICredentials()
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if err != nil {
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return nil, err
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}
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computeURL := *creds.computeURL
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computeURL.Path = path.Join(computeURL.Path, "os-hypervisors", "detail")
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nextLink := computeURL.String()
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var hvs []hypervisor
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for {
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resp, err := getAPIResponse(nextLink, cfg)
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if err != nil {
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return nil, err
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}
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detail, err := parseHypervisorDetail(resp)
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if err != nil {
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return nil, err
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}
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hvs = append(hvs, detail.Hypervisors...)
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if len(detail.Links) == 0 {
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return hvs, nil
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}
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nextLink = detail.Links[0].HREF
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}
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}
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func addHypervisorLabels(hvs []hypervisor, port int) []*promutils.Labels {
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var ms []*promutils.Labels
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for _, hv := range hvs {
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addr := discoveryutils.JoinHostPort(hv.HostIP, port)
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m := promutils.NewLabels(8)
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m.Add("__address__", addr)
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m.Add("__meta_openstack_hypervisor_type", hv.Type)
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m.Add("__meta_openstack_hypervisor_status", hv.Status)
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m.Add("__meta_openstack_hypervisor_hostname", hv.Hostname)
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m.Add("__meta_openstack_hypervisor_state", hv.State)
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m.Add("__meta_openstack_hypervisor_host_ip", hv.HostIP)
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m.Add("__meta_openstack_hypervisor_id", strconv.Itoa(hv.ID))
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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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func getHypervisorLabels(cfg *apiConfig) ([]*promutils.Labels, error) {
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hvs, err := cfg.getHypervisors()
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if err != nil {
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return nil, fmt.Errorf("cannot get hypervisors: %w", err)
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}
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return addHypervisorLabels(hvs, cfg.port), nil
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}
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