api changes

pkg/apis/core/types.go

@@ -2150,6 +2150,12 @@ type ExecAction struct {
 	Command []string
 }
 
+// SleepAction describes a "sleep" action.
+type SleepAction struct {
+	// Seconds is the number of seconds to sleep.
+	Seconds int64
+}
+
 // Probe describes a health check to be performed against a container to determine whether it is
 // alive or ready to receive traffic.
 type Probe struct {
@@ -2432,6 +2438,10 @@ type LifecycleHandler struct {
 	// lifecycle hooks will fail in runtime when tcp handler is specified.
 	// +optional
 	TCPSocket *TCPSocketAction
+	// Sleep represents the duration that the container should sleep before being terminated.
+	// +featureGate=PodLifecycleSleepAction
+	// +optional
+	Sleep *SleepAction
 }
 
 type GRPCAction struct {

pkg/features/kube_features.go

@@ -636,6 +636,13 @@ const (
 	// Adds pod.status.hostIPs and downward API
 	PodHostIPs featuregate.Feature = "PodHostIPs"
 
+	// owner: @AxeZhan
+	// kep: http://kep.k8s.io/3960
+	// alpha: v1.29
+	//
+	// Enables SleepAction in container lifecycle hooks
+	PodLifecycleSleepAction featuregate.Feature = "PodLifecycleSleepAction"
+
 	// owner: @Huang-Wei
 	// kep: https://kep.k8s.io/3521
 	// alpha: v1.26
@@ -1063,6 +1070,8 @@ var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureS
 
 	PodHostIPs: {Default: false, PreRelease: featuregate.Alpha},
 
+	PodLifecycleSleepAction: {Default: false, PreRelease: featuregate.Alpha},
+
 	PodSchedulingReadiness: {Default: true, PreRelease: featuregate.Beta},
 
 	ProbeTerminationGracePeriod: {Default: true, PreRelease: featuregate.GA, LockToDefault: true}, // remove in 1.29

staging/src/k8s.io/api/core/v1/types.go

@@ -2272,6 +2272,12 @@ type ExecAction struct {
 	Command []string `json:"command,omitempty" protobuf:"bytes,1,rep,name=command"`
 }
 
+// SleepAction describes a "sleep" action.
+type SleepAction struct {
+	// Seconds is the number of seconds to sleep.
+	Seconds int64 `json:"seconds" protobuf:"bytes,1,opt,name=seconds"`
+}
+
 // Probe describes a health check to be performed against a container to determine whether it is
 // alive or ready to receive traffic.
 type Probe struct {
@@ -2667,6 +2673,10 @@ type LifecycleHandler struct {
 	// lifecycle hooks will fail in runtime when tcp handler is specified.
 	// +optional
 	TCPSocket *TCPSocketAction `json:"tcpSocket,omitempty" protobuf:"bytes,3,opt,name=tcpSocket"`
+	// Sleep represents the duration that the container should sleep before being terminated.
+	// +featureGate=PodLifecycleSleepAction
+	// +optional
+	Sleep *SleepAction `json:"sleep,omitempty" protobuf:"bytes,4,opt,name=sleep"`
 }
 
 // Lifecycle describes actions that the management system should take in response to container lifecycle