Remove leaky package and move PodInfraContainerName to staging

The variable can be reused in other projects like cadvisor or container
runtimes later on to identify the pod infra container. The `leaky`
package itself is actually not needed any more.

Signed-off-by: Sascha Grunert <sgrunert@redhat.com>

pkg/kubelet/leaky/leaky.go

@@ -1,25 +0,0 @@
-/*
-Copyright 2015 The Kubernetes 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 leaky holds bits of kubelet that should be internal but have leaked
-// out through bad abstractions.  TODO: delete all of this.
-package leaky
-
-const (
-	// PodInfraContainerName is used in a few places outside of Kubelet, such as indexing
-	// into the container info.
-	PodInfraContainerName = "POD"
-)

pkg/kubelet/stats/cadvisor_stats_provider.go

@@ -35,7 +35,6 @@ import (
 	"k8s.io/kubernetes/pkg/kubelet/cadvisor"
 	"k8s.io/kubernetes/pkg/kubelet/cm"
 	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
-	"k8s.io/kubernetes/pkg/kubelet/leaky"
 	"k8s.io/kubernetes/pkg/kubelet/server/stats"
 	"k8s.io/kubernetes/pkg/kubelet/status"
 )
@@ -123,7 +122,7 @@ func (p *cadvisorStatsProvider) ListPodStats(_ context.Context) ([]statsapi.PodS
 		// Update the PodStats entry with the stats from the container by
 		// adding it to podStats.Containers.
 		containerName := kubetypes.GetContainerName(cinfo.Spec.Labels)
-		if containerName == leaky.PodInfraContainerName {
+		if containerName == kubetypes.PodInfraContainerName {
 			// Special case for infrastructure container which is hidden from
 			// the user and has network stats.
 			podStats.Network = cadvisorInfoToNetworkStats(&cinfo)
@@ -211,7 +210,7 @@ func (p *cadvisorStatsProvider) ListPodCPUAndMemoryStats(_ context.Context) ([]s
 		// Update the PodStats entry with the stats from the container by
 		// adding it to podStats.Containers.
 		containerName := kubetypes.GetContainerName(cinfo.Spec.Labels)
-		if containerName == leaky.PodInfraContainerName {
+		if containerName == kubetypes.PodInfraContainerName {
 			// Special case for infrastructure container which is hidden from
 			// the user and has network stats.
 			podStats.StartTime = metav1.NewTime(cinfo.Spec.CreationTime)

pkg/kubelet/stats/cadvisor_stats_provider_test.go

@@ -32,12 +32,12 @@ import (
 	featuregatetesting "k8s.io/component-base/featuregate/testing"
 	runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
 	statsapi "k8s.io/kubelet/pkg/apis/stats/v1alpha1"
+	kubelettypes "k8s.io/kubelet/pkg/types"
 	"k8s.io/kubernetes/pkg/features"
 	cadvisortest "k8s.io/kubernetes/pkg/kubelet/cadvisor/testing"
 	kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
 	containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
 	"k8s.io/kubernetes/pkg/kubelet/kuberuntime"
-	"k8s.io/kubernetes/pkg/kubelet/leaky"
 	serverstats "k8s.io/kubernetes/pkg/kubelet/server/stats"
 	statustest "k8s.io/kubernetes/pkg/kubelet/status/testing"
 	"k8s.io/kubernetes/pkg/volume"
@@ -64,23 +64,23 @@ func TestFilterTerminatedContainerInfoAndAssembleByPodCgroupKey(t *testing.T) {
 		// ContainerInfo with past creation time and no CPU/memory usage for
 		// simulating uncleaned cgroups of already terminated containers, which
 		// should not be shown in the results.
-		"/pod0-i-terminated-1":  getTerminatedContainerInfo(seedPastPod0Infra, pName0, namespace, leaky.PodInfraContainerName),
+		"/pod0-i-terminated-1":  getTerminatedContainerInfo(seedPastPod0Infra, pName0, namespace, kubelettypes.PodInfraContainerName),
 		"/pod0-c0-terminated-1": getTerminatedContainerInfo(seedPastPod0Container0, pName0, namespace, cName00),
 
 		// Same as above but uses the same creation time as the latest
 		// containers. They are terminated containers, so they should not be in
 		// the results.
-		"/pod0-i-terminated-2":  getTerminatedContainerInfo(seedPod0Infra, pName0, namespace, leaky.PodInfraContainerName),
+		"/pod0-i-terminated-2":  getTerminatedContainerInfo(seedPod0Infra, pName0, namespace, kubelettypes.PodInfraContainerName),
 		"/pod0-c0-terminated-2": getTerminatedContainerInfo(seedPod0Container0, pName0, namespace, cName00),
 
 		// The latest containers, which should be in the results.
-		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace, leaky.PodInfraContainerName),
+		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace, kubelettypes.PodInfraContainerName),
 		"/pod0-c0": getTestContainerInfo(seedPod0Container0, pName0, namespace, cName00),
 
-		"/pod1-i.slice":  getTestContainerInfo(seedPod0Infra, pName1, namespace, leaky.PodInfraContainerName),
+		"/pod1-i.slice":  getTestContainerInfo(seedPod0Infra, pName1, namespace, kubelettypes.PodInfraContainerName),
 		"/pod1-c1.slice": getTestContainerInfo(seedPod0Container0, pName1, namespace, cName11),
 
-		"/pod2-i-terminated-1": getTerminatedContainerInfo(seedPastPod0Infra, pName2, namespace, leaky.PodInfraContainerName),
+		"/pod2-i-terminated-1": getTerminatedContainerInfo(seedPastPod0Infra, pName2, namespace, kubelettypes.PodInfraContainerName),
 		// ContainerInfo with past creation time and no CPU/memory usage for
 		// simulating uncleaned cgroups of already terminated containers, which
 		// should not be shown in the results.
@@ -174,19 +174,19 @@ func TestCadvisorListPodStats(t *testing.T) {
 		"/kubelet":       getTestContainerInfo(seedKubelet, "", "", ""),
 		"/system":        getTestContainerInfo(seedMisc, "", "", ""),
 		// Pod0 - Namespace0
-		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace0, leaky.PodInfraContainerName),
+		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace0, kubelettypes.PodInfraContainerName),
 		"/pod0-c0": getTestContainerInfo(seedPod0Container0, pName0, namespace0, cName00),
 		"/pod0-c1": getTestContainerInfo(seedPod0Container1, pName0, namespace0, cName01),
 		// Pod1 - Namespace0
-		"/pod1-i":  getTestContainerInfo(seedPod1Infra, pName1, namespace0, leaky.PodInfraContainerName),
+		"/pod1-i":  getTestContainerInfo(seedPod1Infra, pName1, namespace0, kubelettypes.PodInfraContainerName),
 		"/pod1-c0": getTestContainerInfo(seedPod1Container, pName1, namespace0, cName10),
 		// Pod2 - Namespace2
-		"/pod2-i":                        getTestContainerInfo(seedPod2Infra, pName2, namespace2, leaky.PodInfraContainerName),
+		"/pod2-i":                        getTestContainerInfo(seedPod2Infra, pName2, namespace2, kubelettypes.PodInfraContainerName),
 		"/pod2-c0":                       getTestContainerInfo(seedPod2Container, pName2, namespace2, cName20),
-		"/kubepods/burstable/podUIDpod0": getTestContainerInfo(seedPod0Infra, pName0, namespace0, leaky.PodInfraContainerName),
+		"/kubepods/burstable/podUIDpod0": getTestContainerInfo(seedPod0Infra, pName0, namespace0, kubelettypes.PodInfraContainerName),
-		"/kubepods/podUIDpod1":           getTestContainerInfo(seedPod1Infra, pName1, namespace0, leaky.PodInfraContainerName),
+		"/kubepods/podUIDpod1":           getTestContainerInfo(seedPod1Infra, pName1, namespace0, kubelettypes.PodInfraContainerName),
 		// Pod3 - Namespace0
-		"/pod3-i":       getTestContainerInfo(seedPod3Infra, pName3, namespace0, leaky.PodInfraContainerName),
+		"/pod3-i":       getTestContainerInfo(seedPod3Infra, pName3, namespace0, kubelettypes.PodInfraContainerName),
 		"/pod3-c0-init": getTestContainerInfo(seedPod3Container0, pName3, namespace0, cName30),
 		"/pod3-c1":      getTestContainerInfo(seedPod3Container1, pName3, namespace0, cName31),
 	}
@@ -401,17 +401,17 @@ func TestCadvisorListPodCPUAndMemoryStats(t *testing.T) {
 		"/kubelet":       getTestContainerInfo(seedKubelet, "", "", ""),
 		"/system":        getTestContainerInfo(seedMisc, "", "", ""),
 		// Pod0 - Namespace0
-		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace0, leaky.PodInfraContainerName),
+		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace0, kubelettypes.PodInfraContainerName),
 		"/pod0-c0": getTestContainerInfo(seedPod0Container0, pName0, namespace0, cName00),
 		"/pod0-c1": getTestContainerInfo(seedPod0Container1, pName0, namespace0, cName01),
 		// Pod1 - Namespace0
-		"/pod1-i":  getTestContainerInfo(seedPod1Infra, pName1, namespace0, leaky.PodInfraContainerName),
+		"/pod1-i":  getTestContainerInfo(seedPod1Infra, pName1, namespace0, kubelettypes.PodInfraContainerName),
 		"/pod1-c0": getTestContainerInfo(seedPod1Container, pName1, namespace0, cName10),
 		// Pod2 - Namespace2
-		"/pod2-i":                        getTestContainerInfo(seedPod2Infra, pName2, namespace2, leaky.PodInfraContainerName),
+		"/pod2-i":                        getTestContainerInfo(seedPod2Infra, pName2, namespace2, kubelettypes.PodInfraContainerName),
 		"/pod2-c0":                       getTestContainerInfo(seedPod2Container, pName2, namespace2, cName20),
-		"/kubepods/burstable/podUIDpod0": getTestContainerInfo(seedPod0Infra, pName0, namespace0, leaky.PodInfraContainerName),
+		"/kubepods/burstable/podUIDpod0": getTestContainerInfo(seedPod0Infra, pName0, namespace0, kubelettypes.PodInfraContainerName),
-		"/kubepods/podUIDpod1":           getTestContainerInfo(seedPod1Infra, pName1, namespace0, leaky.PodInfraContainerName),
+		"/kubepods/podUIDpod1":           getTestContainerInfo(seedPod1Infra, pName1, namespace0, kubelettypes.PodInfraContainerName),
 	}
 
 	// memory limit overrides for each container (used to test available bytes if a memory limit is known)
@@ -698,7 +698,7 @@ func TestCadvisorListPodStatsWhenContainerLogFound(t *testing.T) {
 		"/kubelet":       getTestContainerInfo(seedKubelet, "", "", ""),
 		"/system":        getTestContainerInfo(seedMisc, "", "", ""),
 		// Pod0 - Namespace0
-		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace0, leaky.PodInfraContainerName),
+		"/pod0-i":  getTestContainerInfo(seedPod0Infra, pName0, namespace0, kubelettypes.PodInfraContainerName),
 		"/pod0-c0": getTestContainerInfo(seedPod0Container0, pName0, namespace0, cName00),
 		"/pod0-c1": getTestContainerInfo(seedPod0Container1, pName0, namespace0, cName01),
 	}

pkg/kubelet/stats/cri_stats_provider_test.go

@@ -37,11 +37,11 @@ import (
 	runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
 	critest "k8s.io/cri-api/pkg/apis/testing"
 	statsapi "k8s.io/kubelet/pkg/apis/stats/v1alpha1"
+	kubelettypes "k8s.io/kubelet/pkg/types"
 	cadvisortest "k8s.io/kubernetes/pkg/kubelet/cadvisor/testing"
 	"k8s.io/kubernetes/pkg/kubelet/cm"
 	kubecontainertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
 	"k8s.io/kubernetes/pkg/kubelet/kuberuntime"
-	"k8s.io/kubernetes/pkg/kubelet/leaky"
 	kubepodtest "k8s.io/kubernetes/pkg/kubelet/pod/testing"
 	serverstats "k8s.io/kubernetes/pkg/kubelet/server/stats"
 	"k8s.io/kubernetes/pkg/volume"
@@ -162,14 +162,14 @@ func TestCRIListPodStats(t *testing.T) {
 		"/":                           getTestContainerInfo(seedRoot, "", "", ""),
 		"/kubelet":                    getTestContainerInfo(seedKubelet, "", "", ""),
 		"/system":                     getTestContainerInfo(seedMisc, "", "", ""),
-		sandbox0.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, leaky.PodInfraContainerName),
+		sandbox0.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, kubelettypes.PodInfraContainerName),
 		sandbox0Cgroup:                getTestContainerInfo(seedSandbox0, "", "", ""),
 		container0.ContainerStatus.Id: getTestContainerInfo(seedContainer0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, cName0),
 		container1.ContainerStatus.Id: getTestContainerInfo(seedContainer1, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, cName1),
-		sandbox1.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox1, pName1, sandbox1.PodSandboxStatus.Metadata.Namespace, leaky.PodInfraContainerName),
+		sandbox1.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox1, pName1, sandbox1.PodSandboxStatus.Metadata.Namespace, kubelettypes.PodInfraContainerName),
 		sandbox1Cgroup:                getTestContainerInfo(seedSandbox1, "", "", ""),
 		container2.ContainerStatus.Id: getTestContainerInfo(seedContainer2, pName1, sandbox1.PodSandboxStatus.Metadata.Namespace, cName2),
-		sandbox2.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox2, pName2, sandbox2.PodSandboxStatus.Metadata.Namespace, leaky.PodInfraContainerName),
+		sandbox2.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox2, pName2, sandbox2.PodSandboxStatus.Metadata.Namespace, kubelettypes.PodInfraContainerName),
 		sandbox2Cgroup:                getTestContainerInfo(seedSandbox2, "", "", ""),
 		container4.ContainerStatus.Id: getTestContainerInfo(seedContainer3, pName2, sandbox2.PodSandboxStatus.Metadata.Namespace, cName3),
 		sandbox3Cgroup:                getTestContainerInfo(seedSandbox3, "", "", ""),
@@ -381,7 +381,7 @@ func TestListPodStatsStrictlyFromCRI(t *testing.T) {
 		"/":                           getTestContainerInfo(seedRoot, "", "", ""),
 		"/kubelet":                    getTestContainerInfo(seedKubelet, "", "", ""),
 		"/system":                     getTestContainerInfo(seedMisc, "", "", ""),
-		sandbox0.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, leaky.PodInfraContainerName),
+		sandbox0.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, kubelettypes.PodInfraContainerName),
 		sandbox0Cgroup:                getTestContainerInfo(seedSandbox0, "", "", ""),
 		container0.ContainerStatus.Id: getTestContainerInfo(seedContainer0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, cName0),
 		container1.ContainerStatus.Id: getTestContainerInfo(seedContainer1, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, cName1),
@@ -593,14 +593,14 @@ func TestCRIListPodCPUAndMemoryStats(t *testing.T) {
 		"/":                           getTestContainerInfo(seedRoot, "", "", ""),
 		"/kubelet":                    getTestContainerInfo(seedKubelet, "", "", ""),
 		"/system":                     getTestContainerInfo(seedMisc, "", "", ""),
-		sandbox0.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, leaky.PodInfraContainerName),
+		sandbox0.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, kubelettypes.PodInfraContainerName),
 		sandbox0Cgroup:                getTestContainerInfo(seedSandbox0, "", "", ""),
 		container0.ContainerStatus.Id: getTestContainerInfo(seedContainer0, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, cName0),
 		container1.ContainerStatus.Id: getTestContainerInfo(seedContainer1, pName0, sandbox0.PodSandboxStatus.Metadata.Namespace, cName1),
-		sandbox1.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox1, pName1, sandbox1.PodSandboxStatus.Metadata.Namespace, leaky.PodInfraContainerName),
+		sandbox1.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox1, pName1, sandbox1.PodSandboxStatus.Metadata.Namespace, kubelettypes.PodInfraContainerName),
 		sandbox1Cgroup:                getTestContainerInfo(seedSandbox1, "", "", ""),
 		container2.ContainerStatus.Id: getTestContainerInfo(seedContainer2, pName1, sandbox1.PodSandboxStatus.Metadata.Namespace, cName2),
-		sandbox2.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox2, pName2, sandbox2.PodSandboxStatus.Metadata.Namespace, leaky.PodInfraContainerName),
+		sandbox2.PodSandboxStatus.Id:  getTestContainerInfo(seedSandbox2, pName2, sandbox2.PodSandboxStatus.Metadata.Namespace, kubelettypes.PodInfraContainerName),
 		sandbox2Cgroup:                getTestContainerInfo(seedSandbox2, "", "", ""),
 		container4.ContainerStatus.Id: getTestContainerInfo(seedContainer3, pName2, sandbox2.PodSandboxStatus.Metadata.Namespace, cName3),
 		sandbox3Cgroup:                getTestContainerInfo(seedSandbox3, "", "", ""),

staging/src/k8s.io/kubelet/pkg/types/labels.go

@@ -24,6 +24,13 @@ const (
 	KubernetesContainerNameLabel = "io.kubernetes.container.name"
 )
 
+// Label value constants
+const (
+	// PodInfraContainerName is the KubernetesPodNameLabel value for infra
+	// containers.
+	PodInfraContainerName = "POD"
+)
+
 // GetContainerName returns the value of the KubernetesContainerNameLabel.
 func GetContainerName(labels map[string]string) string {
 	return labels[KubernetesContainerNameLabel]