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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.
61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
package http
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import (
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"flag"
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"fmt"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
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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.httpSDCheckInterval", time.Minute, "Interval for checking for changes in http endpoint service discovery. "+
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"This works only if http_sd_configs is configured in '-promscrape.config' file. "+
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"See https://docs.victoriametrics.com/sd_configs.html#http_sd_configs for details")
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// SDConfig represents service discovery config for http.
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//
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// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#http_sd_config
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type SDConfig struct {
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URL string `yaml:"url"`
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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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}
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// GetLabels returns http service discovery 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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hts, err := getHTTPTargets(cfg)
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if err != nil {
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return nil, err
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}
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return addHTTPTargetLabels(hts, sdc.URL), nil
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}
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func addHTTPTargetLabels(src []httpGroupTarget, sourceURL string) []*promutils.Labels {
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ms := make([]*promutils.Labels, 0, len(src))
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for _, targetGroup := range src {
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labels := targetGroup.Labels
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for _, target := range targetGroup.Targets {
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m := promutils.NewLabels(2 + labels.Len())
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m.AddFrom(labels)
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m.Add("__address__", target)
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m.Add("__meta_url", sourceURL)
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m.RemoveDuplicates()
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ms = append(ms, m)
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}
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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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configMap.Delete(sdc)
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}
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