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f325410c26
- 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.
60 lines
2 KiB
Go
60 lines
2 KiB
Go
package dockerswarm
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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 dockerswarm targets refresh.
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var SDCheckInterval = flag.Duration("promscrape.dockerswarmSDCheckInterval", 30*time.Second, "Interval for checking for changes in dockerswarm. "+
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"This works only if dockerswarm_sd_configs is configured in '-promscrape.config' file. "+
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"See https://docs.victoriametrics.com/sd_configs.html#dockerswarm_sd_configs for details")
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// SDConfig represents docker swarm service discovery configuration
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//
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// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#dockerswarm_sd_config
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type SDConfig struct {
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Host string `yaml:"host"`
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Role string `yaml:"role"`
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Port int `yaml:"port,omitempty"`
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Filters []Filter `yaml:"filters,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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// refresh_interval is obtained from `-promscrape.dockerswarmSDCheckInterval` command-line option
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}
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// Filter is a filter, which can be passed to SDConfig.
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type Filter struct {
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Name string `yaml:"name"`
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Values []string `yaml:"values"`
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}
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// GetLabels returns dockerswarm 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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switch sdc.Role {
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case "tasks":
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return getTasksLabels(cfg)
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case "services":
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return getServicesLabels(cfg)
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case "nodes":
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return getNodesLabels(cfg)
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default:
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return nil, fmt.Errorf("unexpected `role`: %q; must be one of `tasks`, `services` or `nodes`; skipping it", sdc.Role)
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}
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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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