Update go dependencies for kubernetes 1.16.0

vendor/k8s.io/kubernetes/pkg/kubelet/container/BUILD

@@ -19,6 +19,8 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//pkg/api/legacyscheme:go_default_library",
+        "//pkg/api/v1/pod:go_default_library",
+        "//pkg/features:go_default_library",
         "//pkg/kubelet/util/format:go_default_library",
         "//pkg/util/hash:go_default_library",
         "//pkg/volume:go_default_library",
@@ -29,6 +31,7 @@ go_library(
         "//staging/src/k8s.io/apimachinery/pkg/util/errors:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/util/sets:go_default_library",
+        "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
         "//staging/src/k8s.io/client-go/tools/record:go_default_library",
         "//staging/src/k8s.io/client-go/tools/reference:go_default_library",
         "//staging/src/k8s.io/client-go/tools/remotecommand:go_default_library",
@@ -43,6 +46,7 @@ go_test(
     name = "go_default_test",
     srcs = [
         "cache_test.go",
+        "container_hash_test.go",
         "helpers_test.go",
         "ref_test.go",
         "runtime_cache_test.go",
@@ -51,10 +55,14 @@ go_test(
     embed = [":go_default_library"],
     deps = [
         "//pkg/apis/core/install:go_default_library",
+        "//pkg/features:go_default_library",
         "//pkg/kubelet/container/testing:go_default_library",
         "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/types:go_default_library",
+        "//staging/src/k8s.io/apiserver/pkg/util/feature:go_default_library",
+        "//staging/src/k8s.io/component-base/featuregate/testing:go_default_library",
+        "//vendor/github.com/google/go-cmp/cmp:go_default_library",
         "//vendor/github.com/stretchr/testify/assert:go_default_library",
     ],
 )

vendor/k8s.io/kubernetes/pkg/kubelet/container/cache.go

@@ -30,7 +30,7 @@ import (
 // has no states known by the runtime, Cache returns an empty PodStatus object
 // with ID populated.
 //
-// Cache provides two methods to retrive the PodStatus: the non-blocking Get()
+// Cache provides two methods to retrieve the PodStatus: the non-blocking Get()
 // and the blocking GetNewerThan() method. The component responsible for
 // populating the cache is expected to call Delete() to explicitly free the
 // cache entries.

vendor/k8s.io/kubernetes/pkg/kubelet/container/helpers.go

@@ -17,6 +17,7 @@ limitations under the License.
 package container
 
 import (
+	"encoding/json"
 	"fmt"
 	"hash/fnv"
 	"strings"
@@ -30,6 +31,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/sets"
 	"k8s.io/client-go/tools/record"
 	runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1alpha2"
+	podutil "k8s.io/kubernetes/pkg/api/v1/pod"
 	"k8s.io/kubernetes/pkg/kubelet/util/format"
 	hashutil "k8s.io/kubernetes/pkg/util/hash"
 	"k8s.io/kubernetes/third_party/forked/golang/expansion"
@@ -91,9 +93,13 @@ func ShouldContainerBeRestarted(container *v1.Container, pod *v1.Pod, podStatus
 
 // HashContainer returns the hash of the container. It is used to compare
 // the running container with its desired spec.
+// Note: remember to update hashValues in container_hash_test.go as well.
 func HashContainer(container *v1.Container) uint64 {
 	hash := fnv.New32a()
-	hashutil.DeepHashObject(hash, *container)
+	// Omit nil or empty field when calculating hash value
+	// Please see https://github.com/kubernetes/kubernetes/issues/53644
+	containerJson, _ := json.Marshal(container)
+	hashutil.DeepHashObject(hash, containerJson)
 	return uint64(hash.Sum32())
 }
 
@@ -278,29 +284,28 @@ func FormatPod(pod *Pod) string {
 
 // GetContainerSpec gets the container spec by containerName.
 func GetContainerSpec(pod *v1.Pod, containerName string) *v1.Container {
-	for i, c := range pod.Spec.Containers {
+	var containerSpec *v1.Container
+	podutil.VisitContainers(&pod.Spec, func(c *v1.Container) bool {
 		if containerName == c.Name {
-			return &pod.Spec.Containers[i]
+			containerSpec = c
+			return false
 		}
-	}
-	for i, c := range pod.Spec.InitContainers {
-		if containerName == c.Name {
-			return &pod.Spec.InitContainers[i]
-		}
-	}
-	return nil
+		return true
+	})
+	return containerSpec
 }
 
 // HasPrivilegedContainer returns true if any of the containers in the pod are privileged.
 func HasPrivilegedContainer(pod *v1.Pod) bool {
-	for _, c := range append(pod.Spec.Containers, pod.Spec.InitContainers...) {
-		if c.SecurityContext != nil &&
-			c.SecurityContext.Privileged != nil &&
-			*c.SecurityContext.Privileged {
-			return true
+	var hasPrivileged bool
+	podutil.VisitContainers(&pod.Spec, func(c *v1.Container) bool {
+		if c.SecurityContext != nil && c.SecurityContext.Privileged != nil && *c.SecurityContext.Privileged {
+			hasPrivileged = true
+			return false
 		}
-	}
-	return false
+		return true
+	})
+	return hasPrivileged
 }
 
 // MakePortMappings creates internal port mapping from api port mapping.

vendor/k8s.io/kubernetes/pkg/kubelet/container/ref.go

@@ -20,8 +20,10 @@ import (
 	"fmt"
 
 	"k8s.io/api/core/v1"
+	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	ref "k8s.io/client-go/tools/reference"
 	"k8s.io/kubernetes/pkg/api/legacyscheme"
+	"k8s.io/kubernetes/pkg/features"
 )
 
 var ImplicitContainerPrefix string = "implicitly required container "
@@ -67,5 +69,16 @@ func fieldPath(pod *v1.Pod, container *v1.Container) (string, error) {
 			return fmt.Sprintf("spec.initContainers{%s}", here.Name), nil
 		}
 	}
+	if utilfeature.DefaultFeatureGate.Enabled(features.EphemeralContainers) {
+		for i := range pod.Spec.EphemeralContainers {
+			here := &pod.Spec.EphemeralContainers[i]
+			if here.Name == container.Name {
+				if here.Name == "" {
+					return fmt.Sprintf("spec.ephemeralContainers[%d]", i), nil
+				}
+				return fmt.Sprintf("spec.ephemeralContainers{%s}", here.Name), nil
+			}
+		}
+	}
 	return "", fmt.Errorf("container %q not found in pod %s/%s", container.Name, pod.Namespace, pod.Name)
 }

vendor/k8s.io/kubernetes/pkg/kubelet/container/runtime.go

@@ -273,8 +273,8 @@ type PodStatus struct {
 	Name string
 	// Namespace of the pod.
 	Namespace string
-	// IP of the pod.
-	IP string
+	// All IPs assigned to this pod
+	IPs []string
 	// Status of containers in the pod.
 	ContainerStatuses []*ContainerStatus
 	// Status of the pod sandbox.

vendor/k8s.io/kubernetes/pkg/kubelet/container/sync_result.go

@@ -116,11 +116,11 @@ func (p *PodSyncResult) Fail(err error) {
 func (p *PodSyncResult) Error() error {
 	errlist := []error{}
 	if p.SyncError != nil {
-		errlist = append(errlist, fmt.Errorf("failed to SyncPod: %v\n", p.SyncError))
+		errlist = append(errlist, fmt.Errorf("failed to SyncPod: %v", p.SyncError))
 	}
 	for _, result := range p.SyncResults {
 		if result.Error != nil {
-			errlist = append(errlist, fmt.Errorf("failed to %q for %q with %v: %q\n", result.Action, result.Target,
+			errlist = append(errlist, fmt.Errorf("failed to %q for %q with %v: %q", result.Action, result.Target,
 				result.Error, result.Message))
 		}
 	}