VictoriaMetrics/lib/promscrape/discovery/kubernetes/kubernetes.go

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package kubernetes
import (
"fmt"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/proxy"
)
// SDConfig represents kubernetes-based service discovery config.
//
// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#kubernetes_sd_config
type SDConfig struct {
APIServer string `yaml:"api_server,omitempty"`
Role string `yaml:"role"`
BasicAuth *promauth.BasicAuthConfig `yaml:"basic_auth,omitempty"`
BearerToken string `yaml:"bearer_token,omitempty"`
BearerTokenFile string `yaml:"bearer_token_file,omitempty"`
ProxyURL proxy.URL `yaml:"proxy_url,omitempty"`
TLSConfig *promauth.TLSConfig `yaml:"tls_config,omitempty"`
Namespaces Namespaces `yaml:"namespaces,omitempty"`
Selectors []Selector `yaml:"selectors,omitempty"`
}
// Namespaces represents namespaces for SDConfig
type Namespaces struct {
Names []string `yaml:"names"`
}
// Selector represents kubernetes selector.
//
// See https://kubernetes.io/docs/concepts/overview/working-with-objects/field-selectors/
// and https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/
type Selector struct {
Role string `yaml:"role"`
Label string `yaml:"label"`
Field string `yaml:"field"`
}
// StartWatchOnce returns init labels for the given sdc and baseDir.
// and starts watching for changes.
func StartWatchOnce(watchCfg *WatchConfig, setName string, sdc *SDConfig, baseDir string) ([]map[string]string, error) {
cfg, err := getAPIConfig(watchCfg, setName, sdc, baseDir)
if err != nil {
return nil, fmt.Errorf("cannot create API config: %w", err)
}
var ms []map[string]string
cfg.watchOnce.Do(func() {
ms = startWatcherByRole(watchCfg.Ctx, sdc.Role, cfg, watchCfg.SC)
})
return ms, nil
}