package util

import "k8s.io/kubernetes/pkg/scheduler/util"

Index ¶

• func GetContainerPorts(pods ...*v1.Pod) []*v1.ContainerPort
• func GetEarliestPodStartTime(victims *api.Victims) *metav1.Time
• func GetPodFullName(pod *v1.Pod) string
• func GetPodPriority(pod *v1.Pod) int32
• func GetPodStartTime(pod *v1.Pod) *metav1.Time
• func MoreImportantPod(pod1, pod2 interface{}) bool
• type Clock
• type ErrorChannel
• func NewErrorChannel() *ErrorChannel
• func (e *ErrorChannel) ReceiveError() error
• func (e *ErrorChannel) SendError(err error)
• func (e *ErrorChannel) SendErrorWithCancel(err error, cancel context.CancelFunc)
• type Heap
• func NewHeap(keyFn KeyFunc, lessFn LessFunc) *Heap
• func NewHeapWithRecorder(keyFn KeyFunc, lessFn LessFunc, metricRecorder metrics.MetricRecorder) *Heap
• func (h *Heap) Add(obj interface{}) error
• func (h *Heap) AddIfNotPresent(obj interface{}) error
• func (h *Heap) Delete(obj interface{}) error
• func (h *Heap) Get(obj interface{}) (interface{}, bool, error)
• func (h *Heap) GetByKey(key string) (interface{}, bool, error)
• func (h *Heap) Len() int
• func (h *Heap) List() []interface{}
• func (h *Heap) Peek() interface{}
• func (h *Heap) Pop() (interface{}, error)
• func (h *Heap) Update(obj interface{}) error
• type KeyFunc
• type LessFunc
• type RealClock
• func (RealClock) Now() time.Time
• type SortableList
• func (l *SortableList) Len() int
• func (l *SortableList) Less(i, j int) bool
• func (l *SortableList) Sort()
• func (l *SortableList) Swap(i, j int)

Functions ¶

func GetContainerPorts ¶

func GetContainerPorts(pods ...*v1.Pod) []*v1.ContainerPort

GetContainerPorts returns the used host ports of Pods: if 'port' was used, a 'port:true' pair will be in the result; but it does not resolve port conflict.

func GetEarliestPodStartTime ¶

func GetEarliestPodStartTime(victims *api.Victims) *metav1.Time

GetEarliestPodStartTime returns the earliest start time of all pods that have the highest priority among all victims.

func GetPodFullName ¶

func GetPodFullName(pod *v1.Pod) string

GetPodFullName returns a name that uniquely identifies a pod.

func GetPodPriority ¶

func GetPodPriority(pod *v1.Pod) int32

GetPodPriority returns priority of the given pod.

func GetPodStartTime ¶

func GetPodStartTime(pod *v1.Pod) *metav1.Time

GetPodStartTime returns start time of the given pod.

func MoreImportantPod ¶

func MoreImportantPod(pod1, pod2 interface{}) bool

MoreImportantPod return true when priority of the first pod is higher than the second one. If two pods' priorities are equal, compare their StartTime. It takes arguments of the type "interface{}" to be used with SortableList, but expects those arguments to be *v1.Pod.

Types ¶

type Clock ¶

type Clock interface {
	Now() time.Time
}

Clock provides an interface for getting the current time

type ErrorChannel ¶

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

ErrorChannel supports non-blocking send and receive operation to capture error. A maximum of one error is kept in the channel and the rest of the errors sent are ignored, unless the existing error is received and the channel becomes empty again.

func NewErrorChannel ¶

func NewErrorChannel() *ErrorChannel

NewErrorChannel returns a new ErrorChannel.

func (*ErrorChannel) ReceiveError ¶

func (e *ErrorChannel) ReceiveError() error

ReceiveError receives an error from channel without blocking on the receiver.

func (*ErrorChannel) SendError ¶

func (e *ErrorChannel) SendError(err error)

SendError sends an error without blocking the sender.

func (*ErrorChannel) SendErrorWithCancel ¶

func (e *ErrorChannel) SendErrorWithCancel(err error, cancel context.CancelFunc)

SendErrorWithCancel sends an error without blocking the sender and calls cancel function.

type Heap ¶

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

Heap is a producer/consumer queue that implements a heap data structure. It can be used to implement priority queues and similar data structures.

func NewHeap ¶

func NewHeap(keyFn KeyFunc, lessFn LessFunc) *Heap

NewHeap returns a Heap which can be used to queue up items to process.

func NewHeapWithRecorder ¶

func NewHeapWithRecorder(keyFn KeyFunc, lessFn LessFunc, metricRecorder metrics.MetricRecorder) *Heap

NewHeapWithRecorder wraps an optional metricRecorder to compose a Heap object.

func (*Heap) Add ¶

func (h *Heap) Add(obj interface{}) error

Add inserts an item, and puts it in the queue. The item is updated if it already exists.

func (*Heap) AddIfNotPresent ¶

func (h *Heap) AddIfNotPresent(obj interface{}) error

AddIfNotPresent inserts an item, and puts it in the queue. If an item with the key is present in the map, no changes is made to the item.

func (*Heap) Delete ¶

func (h *Heap) Delete(obj interface{}) error

Delete removes an item.

func (*Heap) Get ¶

func (h *Heap) Get(obj interface{}) (interface{}, bool, error)

Get returns the requested item, or sets exists=false.

func (*Heap) GetByKey ¶

func (h *Heap) GetByKey(key string) (interface{}, bool, error)

GetByKey returns the requested item, or sets exists=false.

func (*Heap) Len ¶

func (h *Heap) Len() int

Len returns the number of items in the heap.

func (*Heap) List ¶

func (h *Heap) List() []interface{}

List returns a list of all the items.

func (*Heap) Peek ¶

func (h *Heap) Peek() interface{}

Peek returns the head of the heap without removing it.

func (*Heap) Pop ¶

func (h *Heap) Pop() (interface{}, error)

Pop returns the head of the heap and removes it.

func (*Heap) Update ¶

func (h *Heap) Update(obj interface{}) error

Update is the same as Add in this implementation. When the item does not exist, it is added.

type KeyFunc ¶

type KeyFunc func(obj interface{}) (string, error)

KeyFunc is a function type to get the key from an object.

type LessFunc ¶

type LessFunc func(item1, item2 interface{}) bool

LessFunc is a function that receives two items and returns true if the first item should be placed before the second one when the list is sorted.

type RealClock ¶

type RealClock struct{}

RealClock implements a clock using time

func (RealClock) Now ¶

func (RealClock) Now() time.Time

Now returns the current time with time.Now

type SortableList ¶

type SortableList struct {
	Items    []interface{}
	CompFunc LessFunc
}

SortableList is a list that implements sort.Interface.

func (*SortableList) Len ¶

func (l *SortableList) Len() int

func (*SortableList) Less ¶

func (l *SortableList) Less(i, j int) bool

func (*SortableList) Sort ¶

func (l *SortableList) Sort()

Sort sorts the items in the list using the given CompFunc. Item1 is placed before Item2 when CompFunc(Item1, Item2) returns true.

func (*SortableList) Swap ¶

func (l *SortableList) Swap(i, j int)

Source Files ¶

clock.go error_channel.go heap.go utils.go