prometheus/discovery/azure/azure.go

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// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package azure
import (
"context"
"fmt"
"net"
"net/http"
"strings"
"time"
"github.com/Azure/azure-sdk-for-go/arm/compute"
"github.com/Azure/azure-sdk-for-go/arm/network"
"github.com/Azure/go-autorest/autorest"
"github.com/Azure/go-autorest/autorest/adal"
"github.com/Azure/go-autorest/autorest/azure"
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"github.com/go-kit/kit/log"
"github.com/go-kit/kit/log/level"
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"github.com/prometheus/client_golang/prometheus"
config_util "github.com/prometheus/common/config"
"github.com/prometheus/common/model"
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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"github.com/prometheus/prometheus/discovery/targetgroup"
"github.com/prometheus/prometheus/util/strutil"
)
const (
azureLabel = model.MetaLabelPrefix + "azure_"
azureLabelMachineID = azureLabel + "machine_id"
azureLabelMachineResourceGroup = azureLabel + "machine_resource_group"
azureLabelMachineName = azureLabel + "machine_name"
azureLabelMachineOSType = azureLabel + "machine_os_type"
azureLabelMachineLocation = azureLabel + "machine_location"
azureLabelMachinePrivateIP = azureLabel + "machine_private_ip"
azureLabelMachineTag = azureLabel + "machine_tag_"
azureLabelMachineScaleSet = azureLabel + "machine_scale_set"
)
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var (
azureSDRefreshFailuresCount = prometheus.NewCounter(
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prometheus.CounterOpts{
Name: "prometheus_sd_azure_refresh_failures_total",
Help: "Number of Azure-SD refresh failures.",
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})
azureSDRefreshDuration = prometheus.NewSummary(
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prometheus.SummaryOpts{
Name: "prometheus_sd_azure_refresh_duration_seconds",
Help: "The duration of a Azure-SD refresh in seconds.",
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})
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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// DefaultSDConfig is the default Azure SD configuration.
DefaultSDConfig = SDConfig{
Port: 80,
RefreshInterval: model.Duration(5 * time.Minute),
Environment: azure.PublicCloud.Name,
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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}
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)
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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// SDConfig is the configuration for Azure based service discovery.
type SDConfig struct {
Environment string `yaml:"environment,omitempty"`
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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Port int `yaml:"port"`
SubscriptionID string `yaml:"subscription_id"`
TenantID string `yaml:"tenant_id,omitempty"`
ClientID string `yaml:"client_id,omitempty"`
ClientSecret config_util.Secret `yaml:"client_secret,omitempty"`
RefreshInterval model.Duration `yaml:"refresh_interval,omitempty"`
}
// UnmarshalYAML implements the yaml.Unmarshaler interface.
func (c *SDConfig) UnmarshalYAML(unmarshal func(interface{}) error) error {
*c = DefaultSDConfig
type plain SDConfig
err := unmarshal((*plain)(c))
if err != nil {
return err
}
if c.SubscriptionID == "" {
return fmt.Errorf("Azure SD configuration requires a subscription_id")
}
return nil
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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}
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func init() {
prometheus.MustRegister(azureSDRefreshDuration)
prometheus.MustRegister(azureSDRefreshFailuresCount)
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}
// Discovery periodically performs Azure-SD requests. It implements
// the Discoverer interface.
type Discovery struct {
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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cfg *SDConfig
interval time.Duration
port int
logger log.Logger
}
// NewDiscovery returns a new AzureDiscovery which periodically refreshes its targets.
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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func NewDiscovery(cfg *SDConfig, logger log.Logger) *Discovery {
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if logger == nil {
logger = log.NewNopLogger()
}
return &Discovery{
cfg: cfg,
interval: time.Duration(cfg.RefreshInterval),
port: cfg.Port,
logger: logger,
}
}
// Run implements the Discoverer interface.
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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func (d *Discovery) Run(ctx context.Context, ch chan<- []*targetgroup.Group) {
ticker := time.NewTicker(d.interval)
defer ticker.Stop()
for {
select {
case <-ctx.Done():
return
default:
}
tg, err := d.refresh()
if err != nil {
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level.Error(d.logger).Log("msg", "Unable to refresh during Azure discovery", "err", err)
} else {
select {
case <-ctx.Done():
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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case ch <- []*targetgroup.Group{tg}:
}
}
select {
case <-ticker.C:
case <-ctx.Done():
return
}
}
}
// azureClient represents multiple Azure Resource Manager providers.
type azureClient struct {
nic network.InterfacesClient
vm compute.VirtualMachinesClient
vmss compute.VirtualMachineScaleSetsClient
vmssvm compute.VirtualMachineScaleSetVMsClient
}
// createAzureClient is a helper function for creating an Azure compute client to ARM.
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
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func createAzureClient(cfg SDConfig) (azureClient, error) {
env, err := azure.EnvironmentFromName(cfg.Environment)
if err != nil {
return azureClient{}, err
}
activeDirectoryEndpoint := env.ActiveDirectoryEndpoint
resourceManagerEndpoint := env.ResourceManagerEndpoint
var c azureClient
oauthConfig, err := adal.NewOAuthConfig(activeDirectoryEndpoint, cfg.TenantID)
if err != nil {
return azureClient{}, err
}
spt, err := adal.NewServicePrincipalToken(*oauthConfig, cfg.ClientID, string(cfg.ClientSecret), resourceManagerEndpoint)
if err != nil {
return azureClient{}, err
}
bearerAuthorizer := autorest.NewBearerAuthorizer(spt)
c.vm = compute.NewVirtualMachinesClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
c.vm.Authorizer = bearerAuthorizer
c.nic = network.NewInterfacesClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
c.nic.Authorizer = bearerAuthorizer
c.vmss = compute.NewVirtualMachineScaleSetsClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
c.vmss.Authorizer = bearerAuthorizer
c.vmssvm = compute.NewVirtualMachineScaleSetVMsClientWithBaseURI(resourceManagerEndpoint, cfg.SubscriptionID)
c.vmssvm.Authorizer = bearerAuthorizer
return c, nil
}
// azureResource represents a resource identifier in Azure.
type azureResource struct {
Name string
ResourceGroup string
}
// virtualMachine represents an Azure virtual machine (which can also be created by a VMSS)
type virtualMachine struct {
ID string
Name string
Type string
Location string
OsType string
ScaleSet string
Tags map[string]*string
NetworkProfile compute.NetworkProfile
}
// Create a new azureResource object from an ID string.
func newAzureResourceFromID(id string, logger log.Logger) (azureResource, error) {
// Resource IDs have the following format.
// /subscriptions/SUBSCRIPTION_ID/resourceGroups/RESOURCE_GROUP/providers/PROVIDER/TYPE/NAME
// or if embeded resource then
// /subscriptions/SUBSCRIPTION_ID/resourceGroups/RESOURCE_GROUP/providers/PROVIDER/TYPE/NAME/TYPE/NAME
s := strings.Split(id, "/")
if len(s) != 9 && len(s) != 11 {
err := fmt.Errorf("invalid ID '%s'. Refusing to create azureResource", id)
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level.Error(logger).Log("err", err)
return azureResource{}, err
}
return azureResource{
Name: strings.ToLower(s[8]),
ResourceGroup: strings.ToLower(s[4]),
}, nil
}
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
2017-12-29 12:01:34 -08:00
func (d *Discovery) refresh() (tg *targetgroup.Group, err error) {
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defer level.Debug(d.logger).Log("msg", "Azure discovery completed")
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t0 := time.Now()
defer func() {
azureSDRefreshDuration.Observe(time.Since(t0).Seconds())
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if err != nil {
azureSDRefreshFailuresCount.Inc()
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}
}()
Refactor SD configuration to remove `config` dependency (#3629) * refactor: move targetGroup struct and CheckOverflow() to their own package * refactor: move auth and security related structs to a utility package, fix import error in utility package * refactor: Azure SD, remove SD struct from config * refactor: DNS SD, remove SD struct from config into dns package * refactor: ec2 SD, move SD struct from config into the ec2 package * refactor: file SD, move SD struct from config to file discovery package * refactor: gce, move SD struct from config to gce discovery package * refactor: move HTTPClientConfig and URL into util/config, fix import error in httputil * refactor: consul, move SD struct from config into consul discovery package * refactor: marathon, move SD struct from config into marathon discovery package * refactor: triton, move SD struct from config to triton discovery package, fix test * refactor: zookeeper, move SD structs from config to zookeeper discovery package * refactor: openstack, remove SD struct from config, move into openstack discovery package * refactor: kubernetes, move SD struct from config into kubernetes discovery package * refactor: notifier, use targetgroup package instead of config * refactor: tests for file, marathon, triton SD - use targetgroup package instead of config.TargetGroup * refactor: retrieval, use targetgroup package instead of config.TargetGroup * refactor: storage, use config util package * refactor: discovery manager, use targetgroup package instead of config.TargetGroup * refactor: use HTTPClient and TLS config from configUtil instead of config * refactor: tests, use targetgroup package instead of config.TargetGroup * refactor: fix tagetgroup.Group pointers that were removed by mistake * refactor: openstack, kubernetes: drop prefixes * refactor: remove import aliases forced due to vscode bug * refactor: move main SD struct out of config into discovery/config * refactor: rename configUtil to config_util * refactor: rename yamlUtil to yaml_config * refactor: kubernetes, remove prefixes * refactor: move the TargetGroup package to discovery/ * refactor: fix order of imports
2017-12-29 12:01:34 -08:00
tg = &targetgroup.Group{}
client, err := createAzureClient(*d.cfg)
if err != nil {
return tg, fmt.Errorf("could not create Azure client: %s", err)
}
machines, err := client.getVMs()
if err != nil {
return tg, fmt.Errorf("could not get virtual machines: %s", err)
}
level.Debug(d.logger).Log("msg", "Found virtual machines during Azure discovery.", "count", len(machines))
// Load the vms managed by scale sets.
scaleSets, err := client.getScaleSets()
if err != nil {
return tg, fmt.Errorf("could not get virtual machine scale sets: %s", err)
}
for _, scaleSet := range scaleSets {
scaleSetVms, err := client.getScaleSetVMs(scaleSet)
if err != nil {
return tg, fmt.Errorf("could not get virtual machine scale set vms: %s", err)
}
machines = append(machines, scaleSetVms...)
}
// We have the slice of machines. Now turn them into targets.
// Doing them in go routines because the network interface calls are slow.
type target struct {
labelSet model.LabelSet
err error
}
ch := make(chan target, len(machines))
for i, vm := range machines {
go func(i int, vm virtualMachine) {
r, err := newAzureResourceFromID(vm.ID, d.logger)
if err != nil {
ch <- target{labelSet: nil, err: err}
return
}
labels := model.LabelSet{
azureLabelMachineID: model.LabelValue(vm.ID),
azureLabelMachineName: model.LabelValue(vm.Name),
azureLabelMachineOSType: model.LabelValue(vm.OsType),
azureLabelMachineLocation: model.LabelValue(vm.Location),
azureLabelMachineResourceGroup: model.LabelValue(r.ResourceGroup),
}
if vm.ScaleSet != "" {
labels[azureLabelMachineScaleSet] = model.LabelValue(vm.ScaleSet)
}
if vm.Tags != nil {
for k, v := range vm.Tags {
name := strutil.SanitizeLabelName(k)
labels[azureLabelMachineTag+model.LabelName(name)] = model.LabelValue(*v)
}
}
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// Get the IP address information via separate call to the network provider.
for _, nic := range *vm.NetworkProfile.NetworkInterfaces {
networkInterface, err := client.getNetworkInterfaceByID(*nic.ID)
if err != nil {
level.Error(d.logger).Log("msg", "Unable to get network interface", "name", *nic.ID, "err", err)
ch <- target{labelSet: nil, err: err}
// Get out of this routine because we cannot continue without a network interface.
return
}
// Unfortunately Azure does not return information on whether a VM is deallocated.
// This information is available via another API call however the Go SDK does not
// yet support this. On deallocated machines, this value happens to be nil so it
// is a cheap and easy way to determine if a machine is allocated or not.
if networkInterface.Properties.Primary == nil {
level.Debug(d.logger).Log("msg", "Skipping deallocated virtual machine", "machine", vm.Name)
ch <- target{}
return
}
if *networkInterface.Properties.Primary {
for _, ip := range *networkInterface.Properties.IPConfigurations {
if ip.Properties.PrivateIPAddress != nil {
labels[azureLabelMachinePrivateIP] = model.LabelValue(*ip.Properties.PrivateIPAddress)
address := net.JoinHostPort(*ip.Properties.PrivateIPAddress, fmt.Sprintf("%d", d.port))
labels[model.AddressLabel] = model.LabelValue(address)
ch <- target{labelSet: labels, err: nil}
return
}
// If we made it here, we don't have a private IP which should be impossible.
// Return an empty target and error to ensure an all or nothing situation.
err = fmt.Errorf("unable to find a private IP for VM %s", vm.Name)
ch <- target{labelSet: nil, err: err}
return
}
}
}
}(i, vm)
}
for range machines {
tgt := <-ch
if tgt.err != nil {
return nil, fmt.Errorf("unable to complete Azure service discovery: %s", err)
}
if tgt.labelSet != nil {
tg.Targets = append(tg.Targets, tgt.labelSet)
}
}
return tg, nil
}
func (client *azureClient) getVMs() ([]virtualMachine, error) {
var vms []virtualMachine
result, err := client.vm.ListAll()
if err != nil {
return vms, fmt.Errorf("could not list virtual machines: %s", err)
}
for _, vm := range *result.Value {
vms = append(vms, mapFromVM(vm))
}
// If we still have results, keep going until we have no more.
for result.NextLink != nil {
result, err = client.vm.ListAllNextResults(result)
if err != nil {
return vms, fmt.Errorf("could not list virtual machines: %s", err)
}
for _, vm := range *result.Value {
vms = append(vms, mapFromVM(vm))
}
}
return vms, nil
}
func (client *azureClient) getScaleSets() ([]compute.VirtualMachineScaleSet, error) {
var scaleSets []compute.VirtualMachineScaleSet
result, err := client.vmss.ListAll()
if err != nil {
return scaleSets, fmt.Errorf("could not list virtual machine scale sets: %s", err)
}
scaleSets = append(scaleSets, *result.Value...)
for result.NextLink != nil {
result, err = client.vmss.ListAllNextResults(result)
if err != nil {
return scaleSets, fmt.Errorf("could not list virtual machine scale sets: %s", err)
}
scaleSets = append(scaleSets, *result.Value...)
}
return scaleSets, nil
}
func (client *azureClient) getScaleSetVMs(scaleSet compute.VirtualMachineScaleSet) ([]virtualMachine, error) {
var vms []virtualMachine
//TODO do we really need to fetch the resourcegroup this way?
r, err := newAzureResourceFromID(*scaleSet.ID, nil)
if err != nil {
return vms, fmt.Errorf("could not parse scale set ID: %s", err)
}
result, err := client.vmssvm.List(r.ResourceGroup, *(scaleSet.Name), "", "", "")
if err != nil {
return vms, fmt.Errorf("could not list virtual machine scale set vms: %s", err)
}
for _, vm := range *result.Value {
vms = append(vms, mapFromVMScaleSetVM(vm, *scaleSet.Name))
}
for result.NextLink != nil {
result, err = client.vmssvm.ListNextResults(result)
if err != nil {
return vms, fmt.Errorf("could not list virtual machine scale set vms: %s", err)
}
for _, vm := range *result.Value {
vms = append(vms, mapFromVMScaleSetVM(vm, *scaleSet.Name))
}
}
return vms, nil
}
func mapFromVM(vm compute.VirtualMachine) virtualMachine {
osType := string(vm.Properties.StorageProfile.OsDisk.OsType)
tags := map[string]*string{}
if vm.Tags != nil {
tags = *(vm.Tags)
}
return virtualMachine{
ID: *(vm.ID),
Name: *(vm.Name),
Type: *(vm.Type),
Location: *(vm.Location),
OsType: osType,
ScaleSet: "",
Tags: tags,
NetworkProfile: *(vm.Properties.NetworkProfile),
}
}
func mapFromVMScaleSetVM(vm compute.VirtualMachineScaleSetVM, scaleSetName string) virtualMachine {
osType := string(vm.Properties.StorageProfile.OsDisk.OsType)
tags := map[string]*string{}
if vm.Tags != nil {
tags = *(vm.Tags)
}
return virtualMachine{
ID: *(vm.ID),
Name: *(vm.Name),
Type: *(vm.Type),
Location: *(vm.Location),
OsType: osType,
ScaleSet: scaleSetName,
Tags: tags,
NetworkProfile: *(vm.Properties.NetworkProfile),
}
}
func (client *azureClient) getNetworkInterfaceByID(networkInterfaceID string) (network.Interface, error) {
result := network.Interface{}
queryParameters := map[string]interface{}{
"api-version": client.nic.APIVersion,
}
preparer := autorest.CreatePreparer(
autorest.AsGet(),
autorest.WithBaseURL(client.nic.BaseURI),
autorest.WithPath(networkInterfaceID),
autorest.WithQueryParameters(queryParameters))
req, err := preparer.Prepare(&http.Request{})
if err != nil {
return result, autorest.NewErrorWithError(err, "network.InterfacesClient", "Get", nil, "Failure preparing request")
}
resp, err := client.nic.GetSender(req)
if err != nil {
result.Response = autorest.Response{Response: resp}
return result, autorest.NewErrorWithError(err, "network.InterfacesClient", "Get", resp, "Failure sending request")
}
result, err = client.nic.GetResponder(resp)
if err != nil {
err = autorest.NewErrorWithError(err, "network.InterfacesClient", "Get", resp, "Failure responding to request")
}
return result, nil
}