VictoriaMetrics/lib/promscrape/discovery/azure/azure.go

110 lines
4 KiB
Go

package azure
import (
"flag"
"fmt"
"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 is check interval for Azure service discovery.
var SDCheckInterval = flag.Duration("promscrape.azureSDCheckInterval", 60*time.Second, "Interval for checking for changes in Azure. "+
"This works only if azure_sd_configs is configured in '-promscrape.config' file. "+
"See https://docs.victoriametrics.com/sd_configs.html#azure_sd_configs for details")
// SDConfig represents service discovery config for Azure.
//
// See https://prometheus.io/docs/prometheus/latest/configuration/configuration/#azure_sd_config
type SDConfig struct {
Environment string `yaml:"environment,omitempty"`
// AuthenticationMethod can be either Oauth or ManagedIdentity.
// See https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/overview
AuthenticationMethod string `yaml:"authentication_method,omitempty"`
SubscriptionID string `yaml:"subscription_id"`
TenantID string `yaml:"tenant_id,omitempty"`
ClientID string `yaml:"client_id,omitempty"`
ClientSecret *promauth.Secret `yaml:"client_secret,omitempty"`
ResourceGroup string `yaml:"resource_group,omitempty"`
// RefreshInterval time.Duration `yaml:"refresh_interval"`
// refresh_interval is obtained from `-promscrape.azureSDCheckInterval` command-line option.
Port int `yaml:"port"`
HTTPClientConfig promauth.HTTPClientConfig `yaml:",inline"`
ProxyURL *proxy.URL `yaml:"proxy_url,omitempty"`
ProxyClientConfig promauth.ProxyClientConfig `yaml:",inline"`
}
// GetLabels returns Azure 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)
}
vms, err := getVirtualMachines(ac)
if err != nil {
return nil, err
}
return appendMachineLabels(vms, ac.port, sdc), nil
}
// MustStop stops further usage for sdc.
func (sdc *SDConfig) MustStop() {
configMap.Delete(sdc)
}
func appendMachineLabels(vms []virtualMachine, port int, sdc *SDConfig) []*promutils.Labels {
ms := make([]*promutils.Labels, 0, len(vms))
for i := range vms {
vm := &vms[i]
for _, ips := range vm.ipAddresses {
if ips.privateIP == "" {
continue
}
addr := discoveryutils.JoinHostPort(ips.privateIP, port)
m := promutils.NewLabels(16)
m.Add("__address__", addr)
m.Add("__meta_azure_subscription_id", sdc.SubscriptionID)
m.Add("__meta_azure_machine_id", vm.ID)
m.Add("__meta_azure_machine_name", vm.Name)
m.Add("__meta_azure_machine_location", vm.Location)
m.Add("__meta_azure_machine_private_ip", ips.privateIP)
if sdc.TenantID != "" {
m.Add("__meta_azure_tenant_id", sdc.TenantID)
}
// /subscriptions/SUBSCRIPTION_ID/resourceGroups/RESOURCE_GROUP/providers/PROVIDER/TYPE/NAME
idPath := strings.Split(vm.ID, "/")
if len(idPath) > 4 {
m.Add("__meta_azure_machine_resource_group", idPath[4])
}
if vm.Properties.StorageProfile.OsDisk.OsType != "" {
m.Add("__meta_azure_machine_os_type", vm.Properties.StorageProfile.OsDisk.OsType)
}
if vm.Properties.OsProfile.ComputerName != "" {
m.Add("__meta_azure_machine_computer_name", vm.Properties.OsProfile.ComputerName)
}
if ips.publicIP != "" {
m.Add("__meta_azure_machine_public_ip", ips.publicIP)
}
if vm.scaleSet != "" {
m.Add("__meta_azure_machine_scale_set", vm.scaleSet)
}
if vm.Properties.HardwareProfile.VMSize != "" {
m.Add("__meta_azure_machine_size", vm.Properties.HardwareProfile.VMSize)
}
for k, v := range vm.Tags {
m.Add(discoveryutils.SanitizeLabelName("__meta_azure_machine_tag_"+k), v)
}
ms = append(ms, m)
}
}
return ms
}