Add Linode Service Discovery (#8846)

* Add Linode Service Discovery

Signed-off-by: TJ Hoplock <t.hoplock@gmail.com>

config/config_test.go

@@ -39,6 +39,7 @@ import (
 	"github.com/prometheus/prometheus/discovery/file"
 	"github.com/prometheus/prometheus/discovery/hetzner"
 	"github.com/prometheus/prometheus/discovery/kubernetes"
+	"github.com/prometheus/prometheus/discovery/linode"
 	"github.com/prometheus/prometheus/discovery/marathon"
 	"github.com/prometheus/prometheus/discovery/moby"
 	"github.com/prometheus/prometheus/discovery/openstack"
@@ -831,6 +832,32 @@ var expectedConf = &Config{
 				},
 			},
 		},
+		{
+			JobName: "linode-instances",
+
+			HonorTimestamps: true,
+			ScrapeInterval:  model.Duration(15 * time.Second),
+			ScrapeTimeout:   DefaultGlobalConfig.ScrapeTimeout,
+
+			MetricsPath:      DefaultScrapeConfig.MetricsPath,
+			Scheme:           DefaultScrapeConfig.Scheme,
+			HTTPClientConfig: config.DefaultHTTPClientConfig,
+
+			ServiceDiscoveryConfigs: discovery.Configs{
+				&linode.SDConfig{
+					HTTPClientConfig: config.HTTPClientConfig{
+						Authorization: &config.Authorization{
+							Type:        "Bearer",
+							Credentials: "abcdef",
+						},
+						FollowRedirects: true,
+					},
+					Port:            80,
+					TagSeparator:    linode.DefaultSDConfig.TagSeparator,
+					RefreshInterval: model.Duration(60 * time.Second),
+				},
+			},
+		},
 	},
 	AlertingConfig: AlertingConfig{
 		AlertmanagerConfigs: []*AlertmanagerConfig{
@@ -915,7 +942,7 @@ func TestElideSecrets(t *testing.T) {
 	yamlConfig := string(config)
 
 	matches := secretRe.FindAllStringIndex(yamlConfig, -1)
-	require.Equal(t, 14, len(matches), "wrong number of secret matches found")
+	require.Equal(t, 15, len(matches), "wrong number of secret matches found")
 	require.NotContains(t, yamlConfig, "mysecret",
 		"yaml marshal reveals authentication credentials.")
 }

config/testdata/conf.good.yml

@@ -325,6 +325,11 @@ scrape_configs:
       access_key: SCWXXXXXXXXXXXXXXXXX
       secret_key: 11111111-1111-1111-1111-111111111111
 
+- job_name: linode-instances
+  linode_sd_configs:
+    - authorization:
+        credentials: abcdef
+
 alerting:
   alertmanagers:
   - scheme: https

discovery/install/install.go

@@ -26,6 +26,7 @@ import (
 	_ "github.com/prometheus/prometheus/discovery/gce"          // register gce
 	_ "github.com/prometheus/prometheus/discovery/hetzner"      // register hetzner
 	_ "github.com/prometheus/prometheus/discovery/kubernetes"   // register kubernetes
+	_ "github.com/prometheus/prometheus/discovery/linode"       // register linode
 	_ "github.com/prometheus/prometheus/discovery/marathon"     // register marathon
 	_ "github.com/prometheus/prometheus/discovery/moby"         // register moby
 	_ "github.com/prometheus/prometheus/discovery/openstack"    // register openstack

discovery/linode/linode.go

@@ -0,0 +1,261 @@
+// Copyright 2021 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 linode
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/go-kit/kit/log"
+	"github.com/linode/linodego"
+	"github.com/prometheus/common/config"
+	"github.com/prometheus/common/model"
+	"github.com/prometheus/common/version"
+
+	"github.com/prometheus/prometheus/discovery"
+	"github.com/prometheus/prometheus/discovery/refresh"
+	"github.com/prometheus/prometheus/discovery/targetgroup"
+)
+
+const (
+	linodeLabel                   = model.MetaLabelPrefix + "linode_"
+	linodeLabelID                 = linodeLabel + "instance_id"
+	linodeLabelName               = linodeLabel + "instance_label"
+	linodeLabelImage              = linodeLabel + "image"
+	linodeLabelPrivateIPv4        = linodeLabel + "private_ipv4"
+	linodeLabelPublicIPv4         = linodeLabel + "public_ipv4"
+	linodeLabelPublicIPv6         = linodeLabel + "public_ipv6"
+	linodeLabelPrivateIPv4RDNS    = linodeLabel + "private_ipv4_rdns"
+	linodeLabelPublicIPv4RDNS     = linodeLabel + "public_ipv4_rdns"
+	linodeLabelPublicIPv6RDNS     = linodeLabel + "public_ipv6_rdns"
+	linodeLabelRegion             = linodeLabel + "region"
+	linodeLabelType               = linodeLabel + "type"
+	linodeLabelStatus             = linodeLabel + "status"
+	linodeLabelTags               = linodeLabel + "tags"
+	linodeLabelGroup              = linodeLabel + "group"
+	linodeLabelHypervisor         = linodeLabel + "hypervisor"
+	linodeLabelBackups            = linodeLabel + "backups"
+	linodeLabelSpecsDiskBytes     = linodeLabel + "specs_disk_bytes"
+	linodeLabelSpecsMemoryBytes   = linodeLabel + "specs_memory_bytes"
+	linodeLabelSpecsVCPUs         = linodeLabel + "specs_vcpus"
+	linodeLabelSpecsTransferBytes = linodeLabel + "specs_transfer_bytes"
+	linodeLabelExtraIPs           = linodeLabel + "extra_ips"
+)
+
+// DefaultSDConfig is the default Linode SD configuration.
+var DefaultSDConfig = SDConfig{
+	TagSeparator:     ",",
+	Port:             80,
+	RefreshInterval:  model.Duration(60 * time.Second),
+	HTTPClientConfig: config.DefaultHTTPClientConfig,
+}
+
+func init() {
+	discovery.RegisterConfig(&SDConfig{})
+}
+
+// SDConfig is the configuration for Linode based service discovery.
+type SDConfig struct {
+	HTTPClientConfig config.HTTPClientConfig `yaml:",inline"`
+
+	RefreshInterval model.Duration `yaml:"refresh_interval"`
+	Port            int            `yaml:"port"`
+	TagSeparator    string         `yaml:"tag_separator,omitempty"`
+}
+
+// Name returns the name of the Config.
+func (*SDConfig) Name() string { return "linode" }
+
+// NewDiscoverer returns a Discoverer for the Config.
+func (c *SDConfig) NewDiscoverer(opts discovery.DiscovererOptions) (discovery.Discoverer, error) {
+	return NewDiscovery(c, opts.Logger)
+}
+
+// SetDirectory joins any relative file paths with dir.
+func (c *SDConfig) SetDirectory(dir string) {
+	c.HTTPClientConfig.SetDirectory(dir)
+}
+
+// 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
+	}
+	return c.HTTPClientConfig.Validate()
+}
+
+// Discovery periodically performs Linode requests. It implements
+// the Discoverer interface.
+type Discovery struct {
+	*refresh.Discovery
+	client       *linodego.Client
+	port         int
+	tagSeparator string
+}
+
+// NewDiscovery returns a new Discovery which periodically refreshes its targets.
+func NewDiscovery(conf *SDConfig, logger log.Logger) (*Discovery, error) {
+	d := &Discovery{
+		port:         conf.Port,
+		tagSeparator: conf.TagSeparator,
+	}
+
+	rt, err := config.NewRoundTripperFromConfig(conf.HTTPClientConfig, "linode_sd", config.WithHTTP2Disabled())
+	if err != nil {
+		return nil, err
+	}
+
+	client := linodego.NewClient(
+		&http.Client{
+			Transport: rt,
+			Timeout:   time.Duration(conf.RefreshInterval),
+		},
+	)
+	client.SetUserAgent(fmt.Sprintf("Prometheus/%s", version.Version))
+	d.client = &client
+
+	d.Discovery = refresh.NewDiscovery(
+		logger,
+		"linode",
+		time.Duration(conf.RefreshInterval),
+		d.refresh,
+	)
+	return d, nil
+}
+
+func (d *Discovery) refresh(ctx context.Context) ([]*targetgroup.Group, error) {
+	tg := &targetgroup.Group{
+		Source: "Linode",
+	}
+
+	// Gather all linode instances.
+	instances, err := d.client.ListInstances(ctx, &linodego.ListOptions{})
+	if err != nil {
+		return nil, err
+	}
+
+	// Gather detailed IP address info for all IPs on all linode instances.
+	detailedIPs, err := d.client.ListIPAddresses(ctx, &linodego.ListOptions{})
+	if err != nil {
+		return nil, err
+	}
+
+	for _, instance := range instances {
+		if len(instance.IPv4) == 0 {
+			continue
+		}
+
+		var (
+			privateIPv4, publicIPv4, publicIPv6             string
+			privateIPv4RDNS, publicIPv4RDNS, publicIPv6RDNS string
+			backupsStatus                                   string
+			extraIPs                                        []string
+		)
+
+		for _, ip := range instance.IPv4 {
+			for _, detailedIP := range detailedIPs {
+				if detailedIP.Address != ip.String() {
+					continue
+				}
+
+				if detailedIP.Public && publicIPv4 == "" {
+					publicIPv4 = detailedIP.Address
+
+					if detailedIP.RDNS != "" && detailedIP.RDNS != "null" {
+						publicIPv4RDNS = detailedIP.RDNS
+					}
+				} else if !detailedIP.Public && privateIPv4 == "" {
+					privateIPv4 = detailedIP.Address
+
+					if detailedIP.RDNS != "" && detailedIP.RDNS != "null" {
+						privateIPv4RDNS = detailedIP.RDNS
+					}
+				} else {
+					extraIPs = append(extraIPs, detailedIP.Address)
+				}
+			}
+		}
+
+		if instance.IPv6 != "" {
+			for _, detailedIP := range detailedIPs {
+				if detailedIP.Address != strings.Split(instance.IPv6, "/")[0] {
+					continue
+				}
+
+				publicIPv6 = detailedIP.Address
+
+				if detailedIP.RDNS != "" && detailedIP.RDNS != "null" {
+					publicIPv6RDNS = detailedIP.RDNS
+				}
+			}
+		}
+
+		if instance.Backups.Enabled {
+			backupsStatus = "enabled"
+		} else {
+			backupsStatus = "disabled"
+		}
+
+		labels := model.LabelSet{
+			linodeLabelID:                 model.LabelValue(fmt.Sprintf("%d", instance.ID)),
+			linodeLabelName:               model.LabelValue(instance.Label),
+			linodeLabelImage:              model.LabelValue(instance.Image),
+			linodeLabelPrivateIPv4:        model.LabelValue(privateIPv4),
+			linodeLabelPublicIPv4:         model.LabelValue(publicIPv4),
+			linodeLabelPublicIPv6:         model.LabelValue(publicIPv6),
+			linodeLabelPrivateIPv4RDNS:    model.LabelValue(privateIPv4RDNS),
+			linodeLabelPublicIPv4RDNS:     model.LabelValue(publicIPv4RDNS),
+			linodeLabelPublicIPv6RDNS:     model.LabelValue(publicIPv6RDNS),
+			linodeLabelRegion:             model.LabelValue(instance.Region),
+			linodeLabelType:               model.LabelValue(instance.Type),
+			linodeLabelStatus:             model.LabelValue(instance.Status),
+			linodeLabelGroup:              model.LabelValue(instance.Group),
+			linodeLabelHypervisor:         model.LabelValue(instance.Hypervisor),
+			linodeLabelBackups:            model.LabelValue(backupsStatus),
+			linodeLabelSpecsDiskBytes:     model.LabelValue(fmt.Sprintf("%d", instance.Specs.Disk<<20)),
+			linodeLabelSpecsMemoryBytes:   model.LabelValue(fmt.Sprintf("%d", instance.Specs.Memory<<20)),
+			linodeLabelSpecsVCPUs:         model.LabelValue(fmt.Sprintf("%d", instance.Specs.VCPUs)),
+			linodeLabelSpecsTransferBytes: model.LabelValue(fmt.Sprintf("%d", instance.Specs.Transfer<<20)),
+		}
+
+		addr := net.JoinHostPort(publicIPv4, strconv.FormatUint(uint64(d.port), 10))
+		labels[model.AddressLabel] = model.LabelValue(addr)
+
+		if len(instance.Tags) > 0 {
+			// We surround the separated list with the separator as well. This way regular expressions
+			// in relabeling rules don't have to consider tag positions.
+			tags := d.tagSeparator + strings.Join(instance.Tags, d.tagSeparator) + d.tagSeparator
+			labels[linodeLabelTags] = model.LabelValue(tags)
+		}
+
+		if len(extraIPs) > 0 {
+			// This instance has more than one of at least one type of IP address (public, private,
+			// IPv4, IPv6, etc. We provide those extra IPs found here just like we do for instance
+			// tags, we surround a separated list with the tagSeparator config.
+			ips := d.tagSeparator + strings.Join(extraIPs, d.tagSeparator) + d.tagSeparator
+			labels[linodeLabelExtraIPs] = model.LabelValue(ips)
+		}
+
+		tg.Targets = append(tg.Targets, labels)
+	}
+	return []*targetgroup.Group{tg}, nil
+}

discovery/linode/linode_test.go

@@ -0,0 +1,170 @@
+// Copyright 2021 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 linode
+
+import (
+	"context"
+	"fmt"
+	"net/url"
+	"testing"
+
+	"github.com/go-kit/kit/log"
+	"github.com/prometheus/common/config"
+	"github.com/prometheus/common/model"
+	"github.com/stretchr/testify/require"
+)
+
+type LinodeSDTestSuite struct {
+	Mock *SDMock
+}
+
+func (s *LinodeSDTestSuite) TearDownSuite() {
+	s.Mock.ShutdownServer()
+}
+
+func (s *LinodeSDTestSuite) SetupTest(t *testing.T) {
+	s.Mock = NewSDMock(t)
+	s.Mock.Setup()
+
+	s.Mock.HandleLinodeInstancesList()
+	s.Mock.HandleLinodeNeworkingIPs()
+}
+
+func TestLinodeSDRefresh(t *testing.T) {
+	sdmock := &LinodeSDTestSuite{}
+	sdmock.SetupTest(t)
+	t.Cleanup(sdmock.TearDownSuite)
+
+	cfg := DefaultSDConfig
+	cfg.HTTPClientConfig.Authorization = &config.Authorization{
+		Credentials: tokenID,
+		Type:        "Bearer",
+	}
+	d, err := NewDiscovery(&cfg, log.NewNopLogger())
+	require.NoError(t, err)
+	endpoint, err := url.Parse(sdmock.Mock.Endpoint())
+	require.NoError(t, err)
+	d.client.SetBaseURL(fmt.Sprintf("%s/v4", endpoint.String()))
+
+	tgs, err := d.refresh(context.Background())
+	require.NoError(t, err)
+
+	require.Equal(t, 1, len(tgs))
+
+	tg := tgs[0]
+	require.NotNil(t, tg)
+	require.NotNil(t, tg.Targets)
+	require.Equal(t, 4, len(tg.Targets))
+
+	for i, lbls := range []model.LabelSet{
+		{
+			"__address__":                        model.LabelValue("45.33.82.151:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26838044"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-1"),
+			"__meta_linode_image":                model.LabelValue("linode/arch"),
+			"__meta_linode_private_ipv4":         model.LabelValue("192.168.170.51"),
+			"__meta_linode_public_ipv4":          model.LabelValue("45.33.82.151"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2600:3c03::f03c:92ff:fe1a:1382"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li1028-151.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("us-east"),
+			"__meta_linode_type":                 model.LabelValue("g6-standard-2"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("85899345920"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("4294967296"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("2"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("4194304000"),
+			"__meta_linode_extra_ips":            model.LabelValue(",96.126.108.16,192.168.201.25,"),
+		},
+		{
+			"__address__":                        model.LabelValue("139.162.196.43:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26848419"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-2"),
+			"__meta_linode_image":                model.LabelValue("linode/debian10"),
+			"__meta_linode_private_ipv4":         model.LabelValue(""),
+			"__meta_linode_public_ipv4":          model.LabelValue("139.162.196.43"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2a01:7e00::f03c:92ff:fe1a:9976"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li1359-43.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("eu-west"),
+			"__meta_linode_type":                 model.LabelValue("g6-standard-2"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("85899345920"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("4294967296"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("2"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("4194304000"),
+		},
+		{
+			"__address__":                        model.LabelValue("192.53.120.25:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26837938"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-3"),
+			"__meta_linode_image":                model.LabelValue("linode/ubuntu20.04"),
+			"__meta_linode_private_ipv4":         model.LabelValue(""),
+			"__meta_linode_public_ipv4":          model.LabelValue("192.53.120.25"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2600:3c04::f03c:92ff:fe1a:fb68"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li2216-25.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("ca-central"),
+			"__meta_linode_type":                 model.LabelValue("g6-standard-1"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("53687091200"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("2147483648"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("1"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("2097152000"),
+		},
+		{
+			"__address__":                        model.LabelValue("66.228.47.103:80"),
+			"__meta_linode_instance_id":          model.LabelValue("26837992"),
+			"__meta_linode_instance_label":       model.LabelValue("prometheus-linode-sd-exporter-4"),
+			"__meta_linode_image":                model.LabelValue("linode/ubuntu20.04"),
+			"__meta_linode_private_ipv4":         model.LabelValue("192.168.148.94"),
+			"__meta_linode_public_ipv4":          model.LabelValue("66.228.47.103"),
+			"__meta_linode_public_ipv6":          model.LabelValue("2600:3c03::f03c:92ff:fe1a:fb4c"),
+			"__meta_linode_private_ipv4_rdns":    model.LabelValue(""),
+			"__meta_linode_public_ipv4_rdns":     model.LabelValue("li328-103.members.linode.com"),
+			"__meta_linode_public_ipv6_rdns":     model.LabelValue(""),
+			"__meta_linode_region":               model.LabelValue("us-east"),
+			"__meta_linode_type":                 model.LabelValue("g6-nanode-1"),
+			"__meta_linode_status":               model.LabelValue("running"),
+			"__meta_linode_tags":                 model.LabelValue(",monitoring,"),
+			"__meta_linode_group":                model.LabelValue(""),
+			"__meta_linode_hypervisor":           model.LabelValue("kvm"),
+			"__meta_linode_backups":              model.LabelValue("disabled"),
+			"__meta_linode_specs_disk_bytes":     model.LabelValue("26843545600"),
+			"__meta_linode_specs_memory_bytes":   model.LabelValue("1073741824"),
+			"__meta_linode_specs_vcpus":          model.LabelValue("1"),
+			"__meta_linode_specs_transfer_bytes": model.LabelValue("1048576000"),
+			"__meta_linode_extra_ips":            model.LabelValue(",172.104.18.104,"),
+		},
+	} {
+		t.Run(fmt.Sprintf("item %d", i), func(t *testing.T) {
+			require.Equal(t, lbls, tg.Targets[i])
+		})
+	}
+}

discovery/linode/mock_test.go

@@ -0,0 +1,415 @@
+// Copyright 2021 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 linode
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+)
+
+// SDMock is the interface for the Linode mock
+type SDMock struct {
+	t      *testing.T
+	Server *httptest.Server
+	Mux    *http.ServeMux
+}
+
+// NewSDMock returns a new SDMock.
+func NewSDMock(t *testing.T) *SDMock {
+	return &SDMock{
+		t: t,
+	}
+}
+
+// Endpoint returns the URI to the mock server
+func (m *SDMock) Endpoint() string {
+	return m.Server.URL + "/"
+}
+
+// Setup creates the mock server
+func (m *SDMock) Setup() {
+	m.Mux = http.NewServeMux()
+	m.Server = httptest.NewServer(m.Mux)
+}
+
+// ShutdownServer creates the mock server
+func (m *SDMock) ShutdownServer() {
+	m.Server.Close()
+}
+
+const tokenID = "7b2c56dd51edd90952c1b94c472b94b176f20c5c777e376849edd8ad1c6c03bb"
+
+// HandleLinodeInstancesList mocks linode instances list.
+func (m *SDMock) HandleLinodeInstancesList() {
+	m.Mux.HandleFunc("/v4/linode/instances", func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("Authorization") != fmt.Sprintf("Bearer %s", tokenID) {
+			w.WriteHeader(http.StatusUnauthorized)
+			return
+		}
+
+		w.Header().Set("content-type", "application/json; charset=utf-8")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprint(w, `
+{
+  "data": [
+    {
+      "id": 26838044,
+      "label": "prometheus-linode-sd-exporter-1",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T04:23:44",
+      "updated": "2021-05-12T04:23:44",
+      "type": "g6-standard-2",
+      "ipv4": [
+        "45.33.82.151",
+        "96.126.108.16",
+        "192.168.170.51",
+        "192.168.201.25"
+      ],
+      "ipv6": "2600:3c03::f03c:92ff:fe1a:1382/128",
+      "image": "linode/arch",
+      "region": "us-east",
+      "specs": {
+        "disk": 81920,
+        "memory": 4096,
+        "vcpus": 2,
+        "gpus": 0,
+        "transfer": 4000
+      },
+      "alerts": {
+        "cpu": 180,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    },
+    {
+      "id": 26848419,
+      "label": "prometheus-linode-sd-exporter-2",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T12:41:49",
+      "updated": "2021-05-12T12:41:49",
+      "type": "g6-standard-2",
+      "ipv4": [
+        "139.162.196.43"
+      ],
+      "ipv6": "2a01:7e00::f03c:92ff:fe1a:9976/128",
+      "image": "linode/debian10",
+      "region": "eu-west",
+      "specs": {
+        "disk": 81920,
+        "memory": 4096,
+        "vcpus": 2,
+        "gpus": 0,
+        "transfer": 4000
+      },
+      "alerts": {
+        "cpu": 180,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    },
+    {
+      "id": 26837938,
+      "label": "prometheus-linode-sd-exporter-3",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T04:20:11",
+      "updated": "2021-05-12T04:20:11",
+      "type": "g6-standard-1",
+      "ipv4": [
+        "192.53.120.25"
+      ],
+      "ipv6": "2600:3c04::f03c:92ff:fe1a:fb68/128",
+      "image": "linode/ubuntu20.04",
+      "region": "ca-central",
+      "specs": {
+        "disk": 51200,
+        "memory": 2048,
+        "vcpus": 1,
+        "gpus": 0,
+        "transfer": 2000
+      },
+      "alerts": {
+        "cpu": 90,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    },
+    {
+      "id": 26837992,
+      "label": "prometheus-linode-sd-exporter-4",
+      "group": "",
+      "status": "running",
+      "created": "2021-05-12T04:22:06",
+      "updated": "2021-05-12T04:22:06",
+      "type": "g6-nanode-1",
+      "ipv4": [
+        "66.228.47.103",
+        "172.104.18.104",
+        "192.168.148.94"
+      ],
+      "ipv6": "2600:3c03::f03c:92ff:fe1a:fb4c/128",
+      "image": "linode/ubuntu20.04",
+      "region": "us-east",
+      "specs": {
+        "disk": 25600,
+        "memory": 1024,
+        "vcpus": 1,
+        "gpus": 0,
+        "transfer": 1000
+      },
+      "alerts": {
+        "cpu": 90,
+        "network_in": 10,
+        "network_out": 10,
+        "transfer_quota": 80,
+        "io": 10000
+      },
+      "backups": {
+        "enabled": false,
+        "schedule": {
+          "day": null,
+          "window": null
+        },
+        "last_successful": null
+      },
+      "hypervisor": "kvm",
+      "watchdog_enabled": true,
+      "tags": [
+        "monitoring"
+      ]
+    }
+  ],
+  "page": 1,
+  "pages": 1,
+  "results": 4
+}`,
+		)
+	})
+}
+
+// HandleLinodeNeworkingIPs mocks linode networking ips endpoint.
+func (m *SDMock) HandleLinodeNeworkingIPs() {
+	m.Mux.HandleFunc("/v4/networking/ips", func(w http.ResponseWriter, r *http.Request) {
+		if r.Header.Get("Authorization") != fmt.Sprintf("Bearer %s", tokenID) {
+			w.WriteHeader(http.StatusUnauthorized)
+			return
+		}
+
+		w.Header().Set("content-type", "application/json; charset=utf-8")
+		w.WriteHeader(http.StatusOK)
+
+		fmt.Fprint(w, `
+{
+  "page": 1,
+  "pages": 1,
+  "results": 13,
+  "data": [
+    {
+      "address": "192.53.120.25",
+      "gateway": "192.53.120.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li2216-25.members.linode.com",
+      "linode_id": 26837938,
+      "region": "ca-central"
+    },
+    {
+      "address": "66.228.47.103",
+      "gateway": "66.228.47.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li328-103.members.linode.com",
+      "linode_id": 26837992,
+      "region": "us-east"
+    },
+    {
+      "address": "172.104.18.104",
+      "gateway": "172.104.18.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li1832-104.members.linode.com",
+      "linode_id": 26837992,
+      "region": "us-east"
+    },
+    {
+      "address": "192.168.148.94",
+      "gateway": null,
+      "subnet_mask": "255.255.128.0",
+      "prefix": 17,
+      "type": "ipv4",
+      "public": false,
+      "rdns": null,
+      "linode_id": 26837992,
+      "region": "us-east"
+    },
+    {
+      "address": "192.168.170.51",
+      "gateway": null,
+      "subnet_mask": "255.255.128.0",
+      "prefix": 17,
+      "type": "ipv4",
+      "public": false,
+      "rdns": null,
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "96.126.108.16",
+      "gateway": "96.126.108.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li365-16.members.linode.com",
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "45.33.82.151",
+      "gateway": "45.33.82.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li1028-151.members.linode.com",
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "192.168.201.25",
+      "gateway": null,
+      "subnet_mask": "255.255.128.0",
+      "prefix": 17,
+      "type": "ipv4",
+      "public": false,
+      "rdns": null,
+      "linode_id": 26838044,
+      "region": "us-east"
+    },
+    {
+      "address": "139.162.196.43",
+      "gateway": "139.162.196.1",
+      "subnet_mask": "255.255.255.0",
+      "prefix": 24,
+      "type": "ipv4",
+      "public": true,
+      "rdns": "li1359-43.members.linode.com",
+      "linode_id": 26848419,
+      "region": "eu-west"
+    },
+    {
+      "address": "2600:3c04::f03c:92ff:fe1a:fb68",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26837938,
+      "region": "ca-central",
+      "public": true
+    },
+    {
+      "address": "2600:3c03::f03c:92ff:fe1a:fb4c",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26837992,
+      "region": "us-east",
+      "public": true
+    },
+    {
+      "address": "2600:3c03::f03c:92ff:fe1a:1382",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26838044,
+      "region": "us-east",
+      "public": true
+    },
+    {
+      "address": "2a01:7e00::f03c:92ff:fe1a:9976",
+      "gateway": "fe80::1",
+      "subnet_mask": "ffff:ffff:ffff:ffff::",
+      "prefix": 64,
+      "type": "ipv6",
+      "rdns": null,
+      "linode_id": 26848419,
+      "region": "eu-west",
+      "public": true
+    }
+  ]
+}`,
+		)
+	})
+}

docs/configuration/configuration.md

@@ -247,6 +247,10 @@ kubernetes_sd_configs:
 lightsail_sd_configs:
   [ - <lightsail_sd_config> ... ]
 
+# List of Linode service discovery configurations.
+linode_sd_configs:
+  [ - <linode_sd_config> ... ]
+
 # List of Marathon service discovery configurations.
 marathon_sd_configs:
   [ - <marathon_sd_config> ... ]
@@ -1464,6 +1468,84 @@ See below for the configuration options for Lightsail discovery:
 [ port: <int> | default = 80 ]
 ```
 
+### `<linode_sd_config>`
+
+Linode SD configurations allow retrieving scrape targets from [Linode's](https://www.linode.com/)
+Linode APIv4.
+This service discovery uses the public IPv4 address by default, by that can be
+changed with relabelling, as demonstrated in [the Prometheus linode-sd
+configuration file](/documentation/examples/prometheus-linode.yml).
+
+The following meta labels are available on targets during [relabeling](#relabel_config):
+
+* `__meta_linode_instance_id`: the id of the linode instance
+* `__meta_linode_instance_label`: the label of the linode instance
+* `__meta_linode_image`: the slug of the linode instance's image
+* `__meta_linode_private_ipv4`: the private IPv4 of the linode instance
+* `__meta_linode_public_ipv4`: the public IPv4 of the linode instance
+* `__meta_linode_public_ipv6`: the public IPv6 of the linode instance
+* `__meta_linode_region`: the region of the linode instance
+* `__meta_linode_type`: the type of the linode instance
+* `__meta_linode_status`: the status of the linode instance
+* `__meta_linode_tags`: a list of tags of the linode instance joined by the tag separator
+* `__meta_linode_group`: the display group a linode instance is a member of
+* `__meta_linode_hypervisor`: the virtualization software powering the linode instance
+* `__meta_linode_backups`: the backup service status of the linode instance
+* `__meta_linode_specs_disk_bytes`: the amount of storage space the linode instance has access to
+* `__meta_linode_specs_memory_bytes`: the amount of RAM the linode instance has access to
+* `__meta_linode_specs_vcpus`: the number of VCPUS this linode has access to
+* `__meta_linode_specs_transfer_bytes`: the amount of network transfer the linode instance is allotted each month
+* `__meta_linode_extra_ips`: a list of all extra IPv4 addresses assigned to the linode instance joined by the tag separator
+
+```yaml
+# Authentication information used to authenticate to the API server.
+# Note that `basic_auth` and `authorization` options are
+# mutually exclusive.
+# password and password_file are mutually exclusive.
+# Note: Linode APIv4 Token must be created with scopes: 'linodes:read_only' and 'ips:read_only'
+
+# Optional HTTP basic authentication information, not currently supported by Linode APIv4.
+basic_auth:
+  [ username: <string> ]
+  [ password: <secret> ]
+  [ password_file: <string> ]
+
+# Optional the `Authorization` header configuration.
+authorization:
+  # Sets the authentication type.
+  [ type: <string> | default: Bearer ]
+  # Sets the credentials. It is mutually exclusive with
+  # `credentials_file`.
+  [ credentials: <secret> ]
+  # Sets the credentials with the credentials read from the configured file.
+  # It is mutually exclusive with `credentials`.
+  [ credentials_file: <filename> ]
+
+# Optional OAuth 2.0 configuration.
+# Cannot be used at the same time as basic_auth or authorization.
+oauth2:
+  [ <oauth2> ]
+
+# Optional proxy URL.
+[ proxy_url: <string> ]
+
+# Configure whether HTTP requests follow HTTP 3xx redirects.
+[ follow_redirects: <bool> | default = true ]
+
+# TLS configuration.
+tls_config:
+  [ <tls_config> ]
+
+# The port to scrape metrics from.
+[ port: <int> | default = 80 ]
+
+# The string by which Linode Instance tags are joined into the tag label.
+[ tag_separator: <string> | default = , ]
+
+# The time after which the linode instances are refreshed.
+[ refresh_interval: <duration> | default = 60s ]
+```
+
 ### `<marathon_sd_config>`
 
 Marathon SD configurations allow retrieving scrape targets using the
@@ -2078,6 +2160,10 @@ kubernetes_sd_configs:
 lightsail_sd_configs:
   [ - <lightsail_sd_config> ... ]
 
+# List of Linode service discovery configurations.
+linode_sd_configs:
+  [ - <linode_sd_config> ... ]
+
 # List of Marathon service discovery configurations.
 marathon_sd_configs:
   [ - <marathon_sd_config> ... ]

documentation/examples/prometheus-linode.yml

@@ -0,0 +1,24 @@
+# A example scrape configuration for running Prometheus with
+# Linode.
+
+scrape_configs:
+  # Make Prometheus scrape itself for metrics.
+  - job_name: 'prometheus'
+    static_configs:
+    - targets: ['localhost:9090']
+
+  # Discover Node Exporter instances to scrape.
+  - job_name: 'node'
+    linode_sd_configs:
+      - authorization:
+        credentials: "<replace with a Personal Access Token with linodes:read_only + ips:read_only access>"
+    relabel_configs:
+      # Only scrape targets that have a tag 'monitoring'.
+      - source_labels: [__meta_linode_tags]
+        regex: '.*,monitoring,.*'
+        action: keep
+
+      # Use the public IPv6 address and port 9100 to scrape the target.
+      - source_labels: [__meta_linode_public_ipv6]
+        target_label: __address__
+        replacement: '[$1]:9100'

go.mod

@@ -34,6 +34,7 @@ require (
 	github.com/hetznercloud/hcloud-go v1.25.0
 	github.com/influxdata/influxdb v1.8.5
 	github.com/json-iterator/go v1.1.11
+	github.com/linode/linodego v1.0.0
 	github.com/miekg/dns v1.1.41
 	github.com/moby/term v0.0.0-20201216013528-df9cb8a40635 // indirect
 	github.com/morikuni/aec v1.0.0 // indirect

go.sum

@@ -46,23 +46,30 @@ github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78 h1:w+iIsaOQNcT7O
 github.com/Azure/go-ansiterm v0.0.0-20170929234023-d6e3b3328b78/go.mod h1:LmzpDX56iTiv29bbRTIsUNlaFfuhWRQBWjQdVyAevI8=
 github.com/Azure/go-autorest v14.2.0+incompatible h1:V5VMDjClD3GiElqLWO7mz2MxNAK/vTfRHdAubSIPRgs=
 github.com/Azure/go-autorest v14.2.0+incompatible/go.mod h1:r+4oMnoxhatjLLJ6zxSWATqVooLgysK6ZNox3g/xq24=
+github.com/Azure/go-autorest/autorest v0.9.0/go.mod h1:xyHB1BMZT0cuDHU7I0+g046+BFDTQ8rEZB0s4Yfa6bI=
 github.com/Azure/go-autorest/autorest v0.11.12/go.mod h1:eipySxLmqSyC5s5k1CLupqet0PSENBEDP93LQ9a8QYw=
 github.com/Azure/go-autorest/autorest v0.11.18 h1:90Y4srNYrwOtAgVo3ndrQkTYn6kf1Eg/AjTFJ8Is2aM=
 github.com/Azure/go-autorest/autorest v0.11.18/go.mod h1:dSiJPy22c3u0OtOKDNttNgqpNFY/GeWa7GH/Pz56QRA=
+github.com/Azure/go-autorest/autorest/adal v0.5.0/go.mod h1:8Z9fGy2MpX0PvDjB1pEgQTmVqjGhiHBW7RJJEciWzS0=
 github.com/Azure/go-autorest/autorest/adal v0.9.5/go.mod h1:B7KF7jKIeC9Mct5spmyCB/A8CG/sEz1vwIRGv/bbw7A=
 github.com/Azure/go-autorest/autorest/adal v0.9.13 h1:Mp5hbtOePIzM8pJVRa3YLrWWmZtoxRXqUEzCfJt3+/Q=
 github.com/Azure/go-autorest/autorest/adal v0.9.13/go.mod h1:W/MM4U6nLxnIskrw4UwWzlHfGjwUS50aOsc/I3yuU8M=
+github.com/Azure/go-autorest/autorest/date v0.1.0/go.mod h1:plvfp3oPSKwf2DNjlBjWF/7vwR+cUD/ELuzDCXwHUVA=
 github.com/Azure/go-autorest/autorest/date v0.3.0 h1:7gUk1U5M/CQbp9WoqinNzJar+8KY+LPI6wiWrP/myHw=
 github.com/Azure/go-autorest/autorest/date v0.3.0/go.mod h1:BI0uouVdmngYNUzGWeSYnokU+TrmwEsOqdt8Y6sso74=
+github.com/Azure/go-autorest/autorest/mocks v0.1.0/go.mod h1:OTyCOPRA2IgIlWxVYxBee2F5Gr4kF2zd2J5cFRaIDN0=
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 github.com/Azure/go-autorest/autorest/mocks v0.4.1 h1:K0laFcLE6VLTOwNgSxaGbUcLPuGXlNkbVvq4cW4nIHk=
 github.com/Azure/go-autorest/autorest/mocks v0.4.1/go.mod h1:LTp+uSrOhSkaKrUy935gNZuuIPPVsHlr9DSOxSayd+k=
 github.com/Azure/go-autorest/autorest/to v0.4.0 h1:oXVqrxakqqV1UZdSazDOPOLvOIz+XA683u8EctwboHk=
 github.com/Azure/go-autorest/autorest/to v0.4.0/go.mod h1:fE8iZBn7LQR7zH/9XU2NcPR4o9jEImooCeWJcYV/zLE=
 github.com/Azure/go-autorest/autorest/validation v0.3.1 h1:AgyqjAd94fwNAoTjl/WQXg4VvFeRFpO+UhNyRXqF1ac=
 github.com/Azure/go-autorest/autorest/validation v0.3.1/go.mod h1:yhLgjC0Wda5DYXl6JAsWyUe4KVNffhoDhG0zVzUMo3E=
+github.com/Azure/go-autorest/logger v0.1.0/go.mod h1:oExouG+K6PryycPJfVSxi/koC6LSNgds39diKLz7Vrc=
 github.com/Azure/go-autorest/logger v0.2.0/go.mod h1:T9E3cAhj2VqvPOtCYAvby9aBXkZmbF5NWuPV8+WeEW8=
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@@ -75,9 +82,11 @@ github.com/Microsoft/go-winio v0.4.16 h1:FtSW/jqD+l4ba5iPBj9CODVtgfYAD8w2wS923g/
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@@ -175,6 +184,7 @@ github.com/docker/go-connections v0.4.0/go.mod h1:Gbd7IOopHjR8Iph03tsViu4nIes5Xh
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@@ -193,6 +203,7 @@ github.com/envoyproxy/go-control-plane v0.9.7/go.mod h1:cwu0lG7PUMfa9snN8LXBig5y
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@@ -205,6 +216,7 @@ github.com/franela/goblin v0.0.0-20200105215937-c9ffbefa60db/go.mod h1:7dvUGVsVB
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@@ -242,12 +254,14 @@ github.com/go-openapi/errors v0.19.7/go.mod h1:cM//ZKUKyO06HSwqAelJ5NsEMMcpa6VpX
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@@ -273,6 +287,7 @@ github.com/go-openapi/runtime v0.19.15/go.mod h1:dhGWCTKRXlAfGnQG0ONViOZpjfg0m2g
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@@ -295,6 +310,7 @@ github.com/go-openapi/strfmt v0.19.11/go.mod h1:UukAYgTaQfqJuAFlNxxMWNvMYiwiXtLs
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@@ -315,6 +331,8 @@ github.com/go-openapi/validate v0.19.15/go.mod h1:tbn/fdOwYHgrhPBzidZfJC2MIVvs9G
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@@ -371,6 +389,7 @@ github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt
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@@ -438,8 +457,11 @@ github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
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@@ -505,6 +527,7 @@ github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpO
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@@ -572,7 +595,10 @@ github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+
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@@ -867,6 +893,7 @@ go.uber.org/zap v1.10.0/go.mod h1:vwi/ZaCAaUcBkycHslxD9B2zi4UTXhF60s6SWpuDF0Q=
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@@ -878,6 +905,7 @@ golang.org/x/crypto v0.0.0-20190617133340-57b3e21c3d56/go.mod h1:yigFU9vqHzYiE8U
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 golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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@@ -924,6 +952,7 @@ golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
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@@ -948,6 +977,7 @@ golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLL
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@@ -1001,6 +1031,7 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
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@@ -1009,6 +1040,7 @@ golang.org/x/sys v0.0.0-20181026203630-95b1ffbd15a5/go.mod h1:STP8DvDyc/dI5b8T5h
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@@ -1030,6 +1062,7 @@ golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod h1:h1NjWce9XRLGQEsW7w
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@@ -1076,6 +1109,7 @@ golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXR
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@@ -1095,6 +1129,7 @@ golang.org/x/tools v0.0.0-20180221164845-07fd8470d635/go.mod h1:n7NCudcB/nEzxVGm
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@@ -1328,21 +1363,29 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh
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