VictoriaMetrics/lib/promscrape/discovery/nomad/nomad.go
Aliaksandr Valialkin e5eca54951
lib/promscrape/discovery/nomad: sync nomad_sd_configs fields with the Prometheus implementation
See the list of configs supported by Prometheus at f88a0a7d83/discovery/nomad/nomad.go (L76-L84)

- Removed "token" option. In can be set either via NOMAD_TOKEN env var or via `bearer_token` config option.
- Removed "scheme" option. It is automatically detected depending on whether the `tls_config` is set.
- Removed "services" and "tags" options, since they aren't supported by Prometheus.
- Added "region" option. If it is missing, then the region is read from NOMAD_REGION env var.
  If this var is empty, then it is set to "global" in the same way as Nomad client does.
  See 865ee8d37c/api/api.go (L297)
  and 865ee8d37c/api/api.go (L555-L556)
- If the "server" option is missing, then it is read from NOMAD_ADDR in the same way
  as Nomad client does - see 865ee8d37c/api/api.go (L294-L296)

This is a follow-up for 8aee209c53

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3367
2023-01-09 21:14:48 -08:00

47 lines
1.5 KiB
Go

package nomad
import (
"fmt"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/proxy"
)
// SDConfig represents service discovery config for Nomad.
//
// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#nomad_sd_config
type SDConfig struct {
Server string `yaml:"server,omitempty"`
Namespace string `yaml:"namespace,omitempty"`
// RefreshInterval time.Duration `yaml:"refresh_interval"`
// refresh_interval is obtained from `-promscrape.nomadSDCheckInterval` command-line option.
Region string `yaml:"region,omitempty"`
TagSeparator *string `yaml:"tag_separator,omitempty"`
AllowStale *bool `yaml:"allow_stale,omitempty"`
HTTPClientConfig promauth.HTTPClientConfig `yaml:",inline"`
ProxyURL *proxy.URL `yaml:"proxy_url,omitempty"`
ProxyClientConfig promauth.ProxyClientConfig `yaml:",inline"`
}
// GetLabels returns Nomad labels according to sdc.
func (sdc *SDConfig) GetLabels(baseDir string) ([]*promutils.Labels, error) {
cfg, err := getAPIConfig(sdc, baseDir)
if err != nil {
return nil, fmt.Errorf("cannot get API config: %w", err)
}
ms := getServiceLabels(cfg)
return ms, nil
}
// MustStop stops further usage for sdc.
func (sdc *SDConfig) MustStop() {
v := configMap.Delete(sdc)
if v != nil {
// v can be nil if GetLabels wasn't called yet.
cfg := v.(*apiConfig)
cfg.mustStop()
}
}