VictoriaMetrics/lib/promscrape/discovery/vultr/vultr.go
Aliaksandr Valialkin f3be3573e7
lib/promscrape/discovery/vultr: follow-up after 17e3d019d2
- Sort the discovered labels in alphabetical order at https://docs.victoriametrics.com/sd_configs/#vultr_sd_configs
- Rename VultrConfigs to VultrSDConfigs to be consistent with the naming for other SD configs.
- Prepare query arg filters for `list instances API` at newAPIConfig() instead of passing them in a separate listParams struct.
  This simplifies the code a bit.
- Return error when bearer token isn't set at vultr_sd_configs, since this token is mandatory
  according to https://docs.victoriametrics.com/sd_configs/#vultr_sd_configs
- Remove unused fields from the parsed response from Vultr list instances API in order to simplify the code a bit.
- Remove double logging of errors inside getInstances() function, since these errors must be already logged by the caller.
- Simplify tests, so they are easier to maintain.

Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6041
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/6068
2024-07-05 17:40:39 +02:00

104 lines
3.9 KiB
Go

package vultr
import (
"flag"
"fmt"
"strconv"
"strings"
"time"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promscrape/discoveryutils"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/promutils"
"github.com/VictoriaMetrics/VictoriaMetrics/lib/proxy"
)
// SDCheckInterval defines interval for Vultr targets refresh.
var SDCheckInterval = flag.Duration("promscrape.vultrSDCheckInterval", 30*time.Second, "Interval for checking for changes in Vultr. "+
"This works only if vultr_sd_configs is configured in '-promscrape.config' file. "+
"See https://docs.victoriametrics.com/sd_configs.html#vultr_sd_configs for details")
// SDConfig represents service discovery config for Vultr.
//
// See: https://prometheus.io/docs/prometheus/latest/configuration/configuration/#vultr_sd_config
// Additional query params are supported, while Prometheus only supports `Port` and HTTP auth.
type SDConfig struct {
// API query params for filtering. All of them are optional.
// See: https://www.vultr.com/api/#tag/instances/operation/list-instances
Label string `yaml:"label,omitempty"`
MainIP string `yaml:"main_ip,omitempty"`
Region string `yaml:"region,omitempty"`
FirewallGroupID string `yaml:"firewall_group_id,omitempty"`
Hostname string `yaml:"hostname,omitempty"`
// The port to scrape metrics from. Default 80.
Port int `yaml:"port"`
// General HTTP / Auth configs.
HTTPClientConfig promauth.HTTPClientConfig `yaml:",inline"`
ProxyURL *proxy.URL `yaml:"proxy_url,omitempty"`
ProxyClientConfig promauth.ProxyClientConfig `yaml:",inline"`
// refresh_interval is obtained from `-promscrape.vultrSDCheckInterval` command-line option.
}
var configMap = discoveryutils.NewConfigMap()
// GetLabels returns gce labels according to sdc.
func (sdc *SDConfig) GetLabels(baseDir string) ([]*promutils.Labels, error) {
ac, err := getAPIConfig(sdc, baseDir)
if err != nil {
return nil, fmt.Errorf("cannot get API config: %w", err)
}
instances, err := getInstances(ac)
if err != nil {
return nil, err
}
return getInstanceLabels(instances, ac.port), nil
}
// MustStop stops further usage for sdc.
func (sdc *SDConfig) MustStop() {
_ = configMap.Delete(sdc)
}
// getInstanceLabels returns labels for vultr instances obtained from the given cfg
func getInstanceLabels(instances []Instance, port int) []*promutils.Labels {
ms := make([]*promutils.Labels, 0, len(instances))
for _, instance := range instances {
m := promutils.NewLabels(18)
m.Add("__address__", discoveryutils.JoinHostPort(instance.MainIP, port))
m.Add("__meta_vultr_instance_allowed_bandwidth_gb", strconv.Itoa(instance.AllowedBandwidth))
m.Add("__meta_vultr_instance_disk_gb", strconv.Itoa(instance.Disk))
m.Add("__meta_vultr_instance_hostname", instance.Hostname)
m.Add("__meta_vultr_instance_id", instance.ID)
m.Add("__meta_vultr_instance_internal_ip", instance.InternalIP)
m.Add("__meta_vultr_instance_label", instance.Label)
m.Add("__meta_vultr_instance_main_ip", instance.MainIP)
m.Add("__meta_vultr_instance_main_ipv6", instance.V6MainIP)
m.Add("__meta_vultr_instance_os", instance.OS)
m.Add("__meta_vultr_instance_os_id", strconv.Itoa(instance.OSID))
m.Add("__meta_vultr_instance_plan", instance.Plan)
m.Add("__meta_vultr_instance_region", instance.Region)
m.Add("__meta_vultr_instance_ram_mb", strconv.Itoa(instance.RAM))
m.Add("__meta_vultr_instance_server_status", instance.ServerStatus)
m.Add("__meta_vultr_instance_vcpu_count", strconv.Itoa(instance.VCPUCount))
if len(instance.Features) > 0 {
m.Add("__meta_vultr_instance_features", joinStrings(instance.Features))
}
if len(instance.Tags) > 0 {
m.Add("__meta_vultr_instance_tags", joinStrings(instance.Tags))
}
ms = append(ms, m)
}
return ms
}
func joinStrings(a []string) string {
return "," + strings.Join(a, ",") + ","
}