refactor kubelet client to internal folder (open-telemetry#3698)

* refactor kubelet client to internal folder * update go.mod
zdelagrange · Jun 3, 2021 · 858456f · 858456f
1 parent 5e3ecc5
commit 858456f
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Showing 19 changed files with 1,540 additions and 20 deletions.
diff --git a/go.mod b/go.mod
@@ -84,6 +84,8 @@ replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/splun
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig => ./internal/k8sconfig
 
+replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet => ./internal/kubelet
+
 replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/metrics => ./internal/aws/metrics
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/aws/xray => ./internal/aws/xray

diff --git a/internal/kubelet/Makefile b/internal/kubelet/Makefile
@@ -0,0 +1 @@
+include ../../Makefile.Common
diff --git a/...iver/kubeletstatsreceiver/kubelet/cert.go → internal/kubelet/cert.go b/...iver/kubeletstatsreceiver/kubelet/cert.go → internal/kubelet/cert.go
diff --git a/...er/kubeletstatsreceiver/kubelet/client.go → internal/kubelet/client.go b/...er/kubeletstatsreceiver/kubelet/client.go → internal/kubelet/client.go
diff --git a/...letstatsreceiver/kubelet/client_config.go → internal/kubelet/client_config.go b/...letstatsreceiver/kubelet/client_config.go → internal/kubelet/client_config.go
diff --git a/...beletstatsreceiver/kubelet/client_test.go → internal/kubelet/client_test.go b/...beletstatsreceiver/kubelet/client_test.go → internal/kubelet/client_test.go
@@ -32,8 +32,8 @@ import (
  "github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig"
 )
 
-const certPath = "../testdata/testcert.crt"
-const keyFile = "../testdata/testkey.key"
+const certPath = "./testdata/testcert.crt"
+const keyFile = "./testdata/testkey.key"
 
 func TestClient(t *testing.T) {
  tr := &fakeRoundTripper{}
@@ -97,7 +97,7 @@ func TestSvcAcctClient(t *testing.T) {
  p := &saClientProvider{
  endpoint: "localhost:9876",
  caCertPath: certPath,
- tokenPath: "../testdata/token",
+ tokenPath: "./testdata/token",
  logger: zap.NewNop(),
  }
  cl, err := p.BuildClient()
@@ -177,7 +177,7 @@ func TestBuildReq(t *testing.T) {
  p := &saClientProvider{
  endpoint: "localhost:9876",
  caCertPath: certPath,
- tokenPath: "../testdata/token",
+ tokenPath: "./testdata/token",
  logger: zap.NewNop(),
  }
  cl, err := p.BuildClient()
@@ -192,7 +192,7 @@ func TestBuildBadReq(t *testing.T) {
  p := &saClientProvider{
  endpoint: "localhost:9876",
  caCertPath: certPath,
- tokenPath: "../testdata/token",
+ tokenPath: "./testdata/token",
  logger: zap.NewNop(),
  }
  cl, err := p.BuildClient()

diff --git a/internal/kubelet/go.mod b/internal/kubelet/go.mod
@@ -0,0 +1,12 @@
+module github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet
+
+go 1.16
+
+require (
+ github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig v0.0.0-00010101000000-000000000000
+ github.com/stretchr/testify v1.7.0
+ go.opentelemetry.io/collector v0.27.1-0.20210602134904-017aa1dad750
+ go.uber.org/zap v1.17.0
+)
+
+replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig => ../../internal/k8sconfig
diff --git a/internal/kubelet/go.sum b/internal/kubelet/go.sum
diff --git a/internal/kubelet/testdata/testcert.crt b/internal/kubelet/testdata/testcert.crt
@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
diff --git a/internal/kubelet/testdata/testkey.key b/internal/kubelet/testdata/testkey.key
@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
diff --git a/receiver/kubeletstatsreceiver/testdata/token → internal/kubelet/testdata/token b/receiver/kubeletstatsreceiver/testdata/token → internal/kubelet/testdata/token
diff --git a/receiver/kubeletstatsreceiver/config.go b/receiver/kubeletstatsreceiver/config.go
@@ -26,14 +26,15 @@ import (
  "k8s.io/client-go/kubernetes"
 
  "github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig"
+ kube "github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet"
  "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver/kubelet"
 )
 
 var _ config.Receiver = (*Config)(nil)
 
 type Config struct {
  config.ReceiverSettings `mapstructure:",squash"`
- kubelet.ClientConfig `mapstructure:",squash"`
+ kube.ClientConfig  `mapstructure:",squash"`
  confignet.TCPAddr `mapstructure:",squash"`
  CollectionInterval time.Duration `mapstructure:"collection_interval"`
 

diff --git a/receiver/kubeletstatsreceiver/config_test.go b/receiver/kubeletstatsreceiver/config_test.go
@@ -28,6 +28,7 @@ import (
  "go.opentelemetry.io/collector/config/configtls"
 
  "github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig"
+ kube "github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet"
  "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver/kubelet"
 )
 
@@ -44,7 +45,7 @@ func TestLoadConfig(t *testing.T) {
  defaultCfg := cfg.Receivers[config.NewIDWithName(typeStr, "default")].(*Config)
  require.Equal(t, &Config{
  ReceiverSettings: config.NewReceiverSettings(config.NewIDWithName(typeStr, "default")),
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "tls",
  },
@@ -63,7 +64,7 @@ func TestLoadConfig(t *testing.T) {
  TCPAddr: confignet.TCPAddr{
  Endpoint: "1.2.3.4:5555",
  },
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "tls",
  },
@@ -85,7 +86,7 @@ func TestLoadConfig(t *testing.T) {
  saCfg := cfg.Receivers[config.NewIDWithName(typeStr, "sa")].(*Config)
  require.Equal(t, &Config{
  ReceiverSettings: config.NewReceiverSettings(config.NewIDWithName(typeStr, "sa")),
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "serviceAccount",
  },
@@ -102,7 +103,7 @@ func TestLoadConfig(t *testing.T) {
  metadataCfg := cfg.Receivers[config.NewIDWithName(typeStr, "metadata")].(*Config)
  require.Equal(t, &Config{
  ReceiverSettings: config.NewReceiverSettings(config.NewIDWithName(typeStr, "metadata")),
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "serviceAccount",
  },
@@ -122,7 +123,7 @@ func TestLoadConfig(t *testing.T) {
  metricGroupsCfg := cfg.Receivers[config.NewIDWithName(typeStr, "metric_groups")].(*Config)
  require.Equal(t, &Config{
  ReceiverSettings: config.NewReceiverSettings(config.NewIDWithName(typeStr, "metric_groups")),
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "serviceAccount",
  },
@@ -138,7 +139,7 @@ func TestLoadConfig(t *testing.T) {
  metadataWithK8sAPICfg := cfg.Receivers[config.NewIDWithName(typeStr, "metadata_with_k8s_api")].(*Config)
  require.Equal(t, &Config{
  ReceiverSettings: config.NewReceiverSettings(config.NewIDWithName(typeStr, "metadata_with_k8s_api")),
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "serviceAccount",
  },

diff --git a/receiver/kubeletstatsreceiver/factory.go b/receiver/kubeletstatsreceiver/factory.go
@@ -25,6 +25,7 @@ import (
  "go.uber.org/zap"
 
  "github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig"
+ kube "github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet"
  "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver/kubelet"
 )
 
@@ -50,7 +51,7 @@ func NewFactory() component.ReceiverFactory {
 func createDefaultConfig() config.Receiver {
  return &Config{
  ReceiverSettings: config.NewReceiverSettings(config.NewID(typeStr)),
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: k8sconfig.AuthTypeTLS,
  },
@@ -79,7 +80,7 @@ func createMetricsReceiver(
 }
 
 func restClient(logger *zap.Logger, cfg *Config) (kubelet.RestClient, error) {
- clientProvider, err := kubelet.NewClientProvider(cfg.Endpoint, &cfg.ClientConfig, logger)
+ clientProvider, err := kube.NewClientProvider(cfg.Endpoint, &cfg.ClientConfig, logger)
  if err != nil {
  return nil, err
  }

diff --git a/receiver/kubeletstatsreceiver/factory_test.go b/receiver/kubeletstatsreceiver/factory_test.go
@@ -33,6 +33,7 @@ import (
  "go.uber.org/zap"
 
  "github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig"
+ kube "github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet"
  "github.com/open-telemetry/opentelemetry-collector-contrib/receiver/kubeletstatsreceiver/kubelet"
 )
 
@@ -91,7 +92,7 @@ func TestFactoryInvalidExtraMetadataLabels(t *testing.T) {
 func TestFactoryBadAuthType(t *testing.T) {
  factory := NewFactory()
  cfg := &Config{
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "foo",
  },
@@ -108,7 +109,7 @@ func TestFactoryBadAuthType(t *testing.T) {
 
 func TestRestClientErr(t *testing.T) {
  cfg := &Config{
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "tls",
  },
@@ -120,7 +121,7 @@ func TestRestClientErr(t *testing.T) {
 
 func tlsConfig() *Config {
  return &Config{
- ClientConfig: kubelet.ClientConfig{
+ ClientConfig: kube.ClientConfig{
  APIConfig: k8sconfig.APIConfig{
  AuthType: "tls",
  },

diff --git a/receiver/kubeletstatsreceiver/go.mod b/receiver/kubeletstatsreceiver/go.mod
@@ -5,6 +5,7 @@ go 1.16
 require (
  github.com/census-instrumentation/opencensus-proto v0.3.0
  github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig v0.0.0-00010101000000-000000000000
+ github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet v0.0.0-00010101000000-000000000000
  github.com/open-telemetry/opentelemetry-collector-contrib/receiver/redisreceiver v0.0.0-00010101000000-000000000000
  github.com/stretchr/testify v1.7.0
  go.opentelemetry.io/collector v0.27.1-0.20210602134904-017aa1dad750
@@ -21,4 +22,6 @@ replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/commo
 
 replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/k8sconfig => ../../internal/k8sconfig
 
+replace github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet => ../../internal/kubelet
+
 replace github.com/open-telemetry/opentelemetry-collector-contrib/receiver/redisreceiver => ../redisreceiver
diff --git a/receiver/kubeletstatsreceiver/go.sum b/receiver/kubeletstatsreceiver/go.sum
@@ -151,6 +151,7 @@ github.com/casbin/casbin/v2 v2.1.2/go.mod h1:YcPU1XXisHhLzuxH9coDNf2FbKpjGlbCg3n
 github.com/cenkalti/backoff v2.2.1+incompatible h1:tNowT99t7UNflLxfYYSlKYsBpXdEet03Pg2g16Swow4=
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/cenkalti/backoff/v4 v4.0.2/go.mod h1:eEew/i+1Q6OrCDZh3WiXYv3+nJwBASZ8Bog/87DQnVg=
+github.com/cenkalti/backoff/v4 v4.1.0/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
 github.com/cenkalti/backoff/v4 v4.1.1 h1:G2HAfAmvm/GcKan2oOQpBXOd2tT2G57ZnZGWa1PxPBQ=
 github.com/cenkalti/backoff/v4 v4.1.1/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
@@ -190,6 +191,7 @@ github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:ma
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
 github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/crossdock/crossdock-go v0.0.0-20160816171116-049aabb0122b/go.mod h1:v9FBN7gdVTpiD/+LZ7Po0UKvROyT87uLVxTHVky/dlQ=
 github.com/dave/jennifer v1.2.0/go.mod h1:fIb+770HOpJ2fmN9EPPKOqm1vMGhB+TwXKMZhrIygKg=
@@ -511,7 +513,9 @@ github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2z
 github.com/gorilla/mux v1.7.4/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
 github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
+github.com/gorilla/sessions v1.2.1 h1:DHd3rPN5lE3Ts3D8rKkQ8x/0kqfeNmBAaiSi+o7FsgI=
 github.com/gorilla/sessions v1.2.1/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
 github.com/gorilla/websocket v0.0.0-20170926233335-4201258b820c/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
 github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
@@ -879,6 +883,7 @@ github.com/prometheus/common v0.10.0/go.mod h1:Tlit/dnDKsSWFlCLTWaA1cyBgKHSMdTB8
 github.com/prometheus/common v0.15.0/go.mod h1:U+gB1OBLb1lF3O42bTCL+FK18tX9Oar16Clt/msog/s=
 github.com/prometheus/common v0.18.0/go.mod h1:U+gB1OBLb1lF3O42bTCL+FK18tX9Oar16Clt/msog/s=
 github.com/prometheus/common v0.23.0/go.mod h1:H6QK/N6XVT42whUeIdI3dp36w49c+/iMDk7UAI2qm7Q=
+github.com/prometheus/common v0.24.0/go.mod h1:H6QK/N6XVT42whUeIdI3dp36w49c+/iMDk7UAI2qm7Q=
 github.com/prometheus/common v0.25.0 h1:IjJYZJCI8HZYtqA3xYwGyDzSCy1r4CA2GRh+4vdOmtE=
 github.com/prometheus/common v0.25.0/go.mod h1:H6QK/N6XVT42whUeIdI3dp36w49c+/iMDk7UAI2qm7Q=
 github.com/prometheus/exporter-toolkit v0.5.1/go.mod h1:OCkM4805mmisBhLmVFw858QYi3v0wKdY6/UxrT0pZVg=
@@ -927,6 +932,7 @@ github.com/securego/gosec v0.0.0-20200203094520-d13bb6d2420c/go.mod h1:gp0gaHj0W
 github.com/segmentio/kafka-go v0.1.0/go.mod h1:X6itGqS9L4jDletMsxZ7Dz+JFWxM6JHfPOCvTvk+EJo=
 github.com/segmentio/kafka-go v0.2.0/go.mod h1:X6itGqS9L4jDletMsxZ7Dz+JFWxM6JHfPOCvTvk+EJo=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
+github.com/shirou/gopsutil v3.21.4+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA=
 github.com/shirou/gopsutil v3.21.5+incompatible h1:OloQyEerMi7JUrXiNzy8wQ5XN+baemxSl12QgIzt0jc=
 github.com/shirou/gopsutil v3.21.5+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA=
 github.com/shurcooL/httpfs v0.0.0-20190707220628-8d4bc4ba7749/go.mod h1:ZY1cvUeJuFPAdZ/B6v7RHavJWZn2YPVFQ1OSXhCGOkg=
@@ -981,6 +987,7 @@ github.com/streadway/amqp v0.0.0-20190827072141-edfb9018d271/go.mod h1:AZpEONHx3
 github.com/streadway/handy v0.0.0-20190108123426-d5acb3125c2a/go.mod h1:qNTQ5P5JnDBl6z3cMAg/SywNDC5ABu5ApDIw6lUbRmI=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.2.0 h1:Hbg2NidpLE8veEBkEZTL3CvlkUIVzuU9jDplZO54c48=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
 github.com/stretchr/testify v0.0.0-20161117074351-18a02ba4a312/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.0/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
@@ -1053,6 +1060,7 @@ go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.5/go.mod h1:5pWMHQbX5EPX2/62yrJeAkowc+lfs/XD7Uxpq3pI6kk=
 go.opencensus.io v0.23.0 h1:gqCw0LfLxScz8irSi8exQc7fyQ0fKQU/qnC/X8+V/1M=
 go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
+go.opentelemetry.io/collector v0.27.0/go.mod h1:J2oCzkvFAkgmgrvIdQNg5Dt3QAZ+ep7HNtHPay/7nvo=
 go.opentelemetry.io/collector v0.27.1-0.20210602134904-017aa1dad750 h1:+wmsJlfvE1oNjB360VioBlLeaUeu5mlhTo9yeMY/hvo=
 go.opentelemetry.io/collector v0.27.1-0.20210602134904-017aa1dad750/go.mod h1:EuuWTgxcOvna623YhyhaUl0iQtiij10wVu8fBXvsEHw=
 go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
@@ -1137,6 +1145,7 @@ golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.4.1 h1:Kvvh58BN8Y9/lBi7hTekvtMpm07eUZ0ck5pRHpsMWrY=
 golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180530234432-1e491301e022/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -1511,6 +1520,7 @@ google.golang.org/grpc v1.33.2/go.mod h1:JMHMWHQWaTccqQQlmk3MJZS+GWXOdAesneDmEnv
 google.golang.org/grpc v1.34.0/go.mod h1:WotjhfgOW/POjDeRt8vscBtXq+2VjORFy659qA51WJ8=
 google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
 google.golang.org/grpc v1.36.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAGRRjU=
+google.golang.org/grpc v1.37.1/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/grpc v1.38.0 h1:/9BgsAsa5nWe26HqOlvlgJnqBuktYOLCgjCPqsa56W0=
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=

diff --git a/receiver/kubeletstatsreceiver/kubelet/rest_client.go b/receiver/kubeletstatsreceiver/kubelet/rest_client.go
@@ -14,6 +14,10 @@
 
 package kubelet
 
+import (
+ kube "github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet"
+)
+
 // RestClient is swappable for testing.
 type RestClient interface {
  StatsSummary() ([]byte, error)
@@ -25,10 +29,10 @@ type RestClient interface {
 // are excluded because they require cadvisor. The /metrics endpoint is excluded
 // because it returns Prometheus data.
 type HTTPRestClient struct {
- client Client
+ client kube.Client
 }
 
-func NewRestClient(client Client) *HTTPRestClient {
+func NewRestClient(client kube.Client) *HTTPRestClient {
  return &HTTPRestClient{client: client}
 }
 

diff --git a/receiver/kubeletstatsreceiver/kubelet/rest_client_test.go b/receiver/kubeletstatsreceiver/kubelet/rest_client_test.go
@@ -18,6 +18,8 @@ import (
  "testing"
 
  "github.com/stretchr/testify/require"
+
+ kube "github.com/open-telemetry/opentelemetry-collector-contrib/internal/kubelet"
 )
 
 func TestRestClient(t *testing.T) {
@@ -28,7 +30,7 @@ func TestRestClient(t *testing.T) {
  require.Equal(t, "/pods", string(resp))
 }
 
-var _ Client = (*fakeClient)(nil)
+var _ kube.Client = (*fakeClient)(nil)
 
 type fakeClient struct{}