types

package
v1.28.0-alpha.3...-059ce4e Latest Latest
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 Go to latest Published: Jul 9, 2023 License: Apache-2.0 Imports: 9 Imported by: 0

Documentation

Overview

Package types contains common types in the Kubelet.

Index

Constants

View Source 
const (
	// ResolvConfDefault is the system default DNS resolver configuration.
	ResolvConfDefault = "/etc/resolv.conf"
	// RFC3339NanoFixed is the fixed width version of time.RFC3339Nano.
	RFC3339NanoFixed = "2006-01-02T15:04:05.000000000Z07:00"
	// RFC3339NanoLenient is the variable width RFC3339 time format for lenient parsing of strings into timestamps.
	RFC3339NanoLenient = "2006-01-02T15:04:05.999999999Z07:00"
)
View Source 
const (
	NodeAllocatableEnforcementKey = "pods"
	SystemReservedEnforcementKey  = "system-reserved"
	KubeReservedEnforcementKey    = "kube-reserved"
	NodeAllocatableNoneKey        = "none"
)

User visible keys for managing node allocatable enforcement on the node.

View Source 
const (
	LimitedSwap   = "LimitedSwap"
	UnlimitedSwap = "UnlimitedSwap"
)

SwapBehavior types

View Source 
const (
	KubernetesPodNameLabel       = "io.kubernetes.pod.name"
	KubernetesPodNamespaceLabel  = "io.kubernetes.pod.namespace"
	KubernetesPodUIDLabel        = "io.kubernetes.pod.uid"
	KubernetesContainerNameLabel = "io.kubernetes.container.name"
)

Label keys for labels used in this package.

View Source 
const (
	ConfigSourceAnnotationKey    = "kubernetes.io/config.source"
	ConfigMirrorAnnotationKey    = v1.MirrorPodAnnotationKey
	ConfigFirstSeenAnnotationKey = "kubernetes.io/config.seen"
	ConfigHashAnnotationKey      = "kubernetes.io/config.hash"
)

Annotation keys for annotations used in this package.

View Source 
const (
	// Filesource idenitified updates from a file.
	FileSource = "file"
	// HTTPSource identifies updates from querying a web page.
	HTTPSource = "http"
	// ApiserverSource identifies updates from Kubernetes API Server.
	ApiserverSource = "api"
	// AllSource identifies updates from all sources.
	AllSource = "*"
)

These constants identify the sources of pods.

View Source 
const NamespaceDefault = metav1.NamespaceDefault

NamespaceDefault is a string representing the default namespace.

View Source 
const (
	// PodReadyToStartContainers pod sandbox is successfully configured and
	// the pod is ready to launch containers.
	PodReadyToStartContainers = "PodReadyToStartContainers"
)

Alpha conditions managed by Kubelet that are not yet part of the API. The entries here should be moved to staging/src/k8s.io.api/core/v1/types.go once the feature managing the condition graduates to Beta.

Variables

View Source 
var PodConditionsByKubelet = []v1.PodConditionType{
	v1.PodScheduled,
	v1.PodReady,
	v1.PodInitialized,
	v1.ContainersReady,
}

PodConditionsByKubelet is the list of pod conditions owned by kubelet

Functions

func GetContainerName 

func GetContainerName(labels map[string]string) string

GetContainerName returns the value of the KubernetesContainerNameLabel.

func GetPodName 

func GetPodName(labels map[string]string) string

GetPodName returns the value of the KubernetesPodNameLabel.

func GetPodNamespace 

func GetPodNamespace(labels map[string]string) string

GetPodNamespace returns the value of the KubernetesPodNamespaceLabel.

func GetPodSource 

func GetPodSource(pod *v1.Pod) (string, error)

GetPodSource returns the source of the pod based on the annotation.

func GetPodUID 

func GetPodUID(labels map[string]string) string

GetPodUID returns the value of the KubernetesPodUIDLabel.

func GetValidatedSources 

func GetValidatedSources(sources []string) ([]string, error)

GetValidatedSources gets all validated sources from the specified sources.

func IsCriticalPod 

func IsCriticalPod(pod *v1.Pod) bool

IsCriticalPod returns true if pod's priority is greater than or equal to SystemCriticalPriority.

func IsCriticalPodBasedOnPriority 

func IsCriticalPodBasedOnPriority(priority int32) bool

IsCriticalPodBasedOnPriority checks if the given pod is a critical pod based on priority resolved from pod Spec.

func IsMirrorPod 

func IsMirrorPod(pod *v1.Pod) bool

IsMirrorPod returns true if the passed Pod is a Mirror Pod.

func IsNodeCriticalPod 

func IsNodeCriticalPod(pod *v1.Pod) bool

IsNodeCriticalPod checks if the given pod is a system-node-critical

func IsStaticPod 

func IsStaticPod(pod *v1.Pod) bool

IsStaticPod returns true if the pod is a static pod.

func PodConditionByKubelet 

func PodConditionByKubelet(conditionType v1.PodConditionType) bool

PodConditionByKubelet returns if the pod condition type is owned by kubelet

func PodConditionSharedByKubelet 

func PodConditionSharedByKubelet(conditionType v1.PodConditionType) bool

PodConditionSharedByKubelet returns if the pod condition type is shared by kubelet

func Preemptable 

func Preemptable(preemptor, preemptee *v1.Pod) bool

Preemptable returns true if preemptor pod can preempt preemptee pod if preemptee is not critical or if preemptor's priority is greater than preemptee's priority

func SortInitContainerStatuses 

func SortInitContainerStatuses(p *v1.Pod, statuses []v1.ContainerStatus)

SortInitContainerStatuses ensures that statuses are in the order that their init container appears in the pod spec

func SortStatusesOfInitContainers 

func SortStatusesOfInitContainers(p *v1.Pod, statusMap map[string]*v1.ContainerStatus) []v1.ContainerStatus

SortStatusesOfInitContainers returns the statuses of InitContainers of pod p, in the order that they appear in its spec.

Types

type HTTPDoer 

type HTTPDoer interface {
	Do(req *http.Request) (*http.Response, error)
}

HTTPDoer encapsulates http.Do functionality

type MirrorPodUID 

type MirrorPodUID types.UID

MirrorPodUID is a pod UID for a mirror pod.

type PodOperation 

type PodOperation int

PodOperation defines what changes will be made on a pod configuration. 

const (
	// SET is the current pod configuration.
	SET PodOperation = iota
	// ADD signifies pods that are new to this source.
	ADD
	// DELETE signifies pods that are gracefully deleted from this source.
	DELETE
	// REMOVE signifies pods that have been removed from this source.
	REMOVE
	// UPDATE signifies pods have been updated in this source.
	UPDATE
	// RECONCILE signifies pods that have unexpected status in this source,
	// kubelet should reconcile status with this source.
	RECONCILE
)

These constants identify the PodOperations that can be made on a pod configuration.

type PodUpdate 

type PodUpdate struct {
	Pods   []*v1.Pod
	Op     PodOperation
	Source string
}

PodUpdate defines an operation sent on the channel. You can add or remove single services by sending an array of size one and Op == ADD|REMOVE (with REMOVE, only the ID is required). For setting the state of the system to a given state for this source configuration, set Pods as desired and Op to SET, which will reset the system state to that specified in this operation for this source channel. To remove all pods, set Pods to empty object and Op to SET.

Additionally, Pods should never be nil - it should always point to an empty slice. While functionally similar, this helps our unit tests properly check that the correct PodUpdates are generated.

type Reservation 

type Reservation struct {
	// System represents resources reserved for non-kubernetes components.
	System v1.ResourceList
	// Kubernetes represents resources reserved for kubernetes system components.
	Kubernetes v1.ResourceList
}

Reservation represents reserved resources for non-pod components.

type ResolvedPodUID 

type ResolvedPodUID types.UID

ResolvedPodUID is a pod UID which has been translated/resolved to the representation known to kubelets.

type SortedContainerStatuses 

type SortedContainerStatuses []v1.ContainerStatus

SortedContainerStatuses is a type to help sort container statuses based on container names.

func (SortedContainerStatuses) Len 

func (s SortedContainerStatuses) Len() int

func (SortedContainerStatuses) Less 

func (s SortedContainerStatuses) Less(i, j int) bool

func (SortedContainerStatuses) Swap 

func (s SortedContainerStatuses) Swap(i, j int)

type SyncPodType 

type SyncPodType int

SyncPodType classifies pod updates, eg: create, update. 

const (
	// SyncPodSync is when the pod is synced to ensure desired state
	SyncPodSync SyncPodType = iota
	// SyncPodUpdate is when the pod is updated from source
	SyncPodUpdate
	// SyncPodCreate is when the pod is created from source
	SyncPodCreate
	// SyncPodKill is when the pod should have no running containers. A pod stopped in this way could be
	// restarted in the future due config changes.
	SyncPodKill
)

func (SyncPodType) String 

func (sp SyncPodType) String() string

type Timestamp 

type Timestamp struct {
	// contains filtered or unexported fields
}

Timestamp wraps around time.Time and offers utilities to format and parse the time using RFC3339Nano

func ConvertToTimestamp 

func ConvertToTimestamp(timeString string) *Timestamp

ConvertToTimestamp takes a string, parses it using the RFC3339NanoLenient layout, and converts it to a Timestamp object.

func NewTimestamp 

func NewTimestamp() *Timestamp

NewTimestamp returns a Timestamp object using the current time.

func (*Timestamp) Get 

func (t *Timestamp) Get() time.Time

Get returns the time as time.Time.

func (*Timestamp) GetString 

func (t *Timestamp) GetString() string

GetString returns the time in the string format using the RFC3339NanoFixed layout.

Source Files

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