factory

package
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 Go to latest Published: Jun 23, 2020 License: Apache-2.0 Imports: 49 Imported by: 0

Documentation

Overview

Package factory can set up a scheduler. This code is here instead of cmd/scheduler for both testability and reuse.

Index

Constants

View Source 
const (
	// DefaultProvider defines the default algorithm provider name.
	DefaultProvider = "DefaultProvider"
)

Variables

This section is empty.

Functions

func InsertPredicateKeyToAlgoProvider 

func InsertPredicateKeyToAlgoProvider(providerName, key string) error

InsertPredicateKeyToAlgoProvider insert a fit predicate key to algorithmProvider.

func InsertPredicateKeyToAlgorithmProviderMap 

func InsertPredicateKeyToAlgorithmProviderMap(key string)

InsertPredicateKeyToAlgorithmProviderMap insert a fit predicate key to all algorithmProviders which in algorithmProviderMap.

func InsertPriorityKeyToAlgorithmProviderMap 

func InsertPriorityKeyToAlgorithmProviderMap(key string)

InsertPriorityKeyToAlgorithmProviderMap inserts a priority function to all algorithmProviders which are in algorithmProviderMap.

func IsFitPredicateRegistered 

func IsFitPredicateRegistered(name string) bool

IsFitPredicateRegistered is useful for testing providers.

func IsPriorityFunctionRegistered 

func IsPriorityFunctionRegistered(name string) bool

IsPriorityFunctionRegistered is useful for testing providers.

func ListAlgorithmProviders 

func ListAlgorithmProviders() string

ListAlgorithmProviders is called when listing all available algorithm providers in `kube-scheduler --help`

func ListRegisteredFitPredicates 

func ListRegisteredFitPredicates() []string

ListRegisteredFitPredicates returns the registered fit predicates.

func ListRegisteredPriorityFunctions 

func ListRegisteredPriorityFunctions() []string

ListRegisteredPriorityFunctions returns the registered priority functions.

func NewPodInformer 

func NewPodInformer(client clientset.Interface, resyncPeriod time.Duration) coreinformers.PodInformer

NewPodInformer creates a shared index informer that returns only non-terminal pods.

func RegisterAlgorithmProvider 

func RegisterAlgorithmProvider(name string, predicateKeys, priorityKeys sets.String) string

RegisterAlgorithmProvider registers a new algorithm provider with the algorithm registry. This should be called from the init function in a provider plugin.

func RegisterCustomFitPredicate 

func RegisterCustomFitPredicate(policy schedulerapi.PredicatePolicy) string

RegisterCustomFitPredicate registers a custom fit predicate with the algorithm registry. Returns the name, with which the predicate was registered.

func RegisterCustomPriorityFunction 

func RegisterCustomPriorityFunction(policy schedulerapi.PriorityPolicy) string

RegisterCustomPriorityFunction registers a custom priority function with the algorithm registry. Returns the name, with which the priority function was registered.

func RegisterFitPredicate 

func RegisterFitPredicate(name string, predicate algorithm.FitPredicate) string

RegisterFitPredicate registers a fit predicate with the algorithm registry. Returns the name with which the predicate was registered.

func RegisterFitPredicateFactory 

func RegisterFitPredicateFactory(name string, predicateFactory FitPredicateFactory) string

RegisterFitPredicateFactory registers a fit predicate factory with the algorithm registry. Returns the name with which the predicate was registered.

func RegisterMandatoryFitPredicate 

func RegisterMandatoryFitPredicate(name string, predicate algorithm.FitPredicate) string

RegisterMandatoryFitPredicate registers a fit predicate with the algorithm registry, the predicate is used by kubelet, DaemonSet; it is always included in configuration. Returns the name with which the predicate was registered.

func RegisterPredicateMetadataProducerFactory 

func RegisterPredicateMetadataProducerFactory(factory PredicateMetadataProducerFactory)

RegisterPredicateMetadataProducerFactory registers a PredicateMetadataProducerFactory.

func RegisterPriorityConfigFactory 

func RegisterPriorityConfigFactory(name string, pcf PriorityConfigFactory) string

RegisterPriorityConfigFactory registers a priority config factory with its name.

func RegisterPriorityFunction 

func RegisterPriorityFunction(name string, function algorithm.PriorityFunction, weight int) string

RegisterPriorityFunction registers a priority function with the algorithm registry. Returns the name, with which the function was registered. DEPRECATED Use Map-Reduce pattern for priority functions.

func RegisterPriorityFunction2 

func RegisterPriorityFunction2(
	name string,
	mapFunction algorithm.PriorityMapFunction,
	reduceFunction algorithm.PriorityReduceFunction,
	weight int) string

RegisterPriorityFunction2 registers a priority function with the algorithm registry. Returns the name, with which the function was registered. FIXME: Rename to PriorityFunctionFactory.

func RegisterPriorityMetadataProducerFactory 

func RegisterPriorityMetadataProducerFactory(factory PriorityMetadataProducerFactory)

RegisterPriorityMetadataProducerFactory registers a PriorityMetadataProducerFactory.

func RemoveFitPredicate 

func RemoveFitPredicate(name string)

RemoveFitPredicate removes a fit predicate from factory.

func RemovePredicateKeyFromAlgoProvider 

func RemovePredicateKeyFromAlgoProvider(providerName, key string) error

RemovePredicateKeyFromAlgoProvider removes a fit predicate key from algorithmProvider.

func RemovePredicateKeyFromAlgorithmProviderMap 

func RemovePredicateKeyFromAlgorithmProviderMap(key string)

RemovePredicateKeyFromAlgorithmProviderMap removes a fit predicate key from all algorithmProviders which in algorithmProviderMap.

Types

type AlgorithmProviderConfig 

type AlgorithmProviderConfig struct {
	FitPredicateKeys     sets.String
	PriorityFunctionKeys sets.String
}

AlgorithmProviderConfig is used to store the configuration of algorithm providers.

func GetAlgorithmProvider 

func GetAlgorithmProvider(name string) (*AlgorithmProviderConfig, error)

GetAlgorithmProvider should not be used to modify providers. It is publicly visible for testing.

type Binder 

type Binder interface {
	Bind(binding *v1.Binding) error
}

Binder knows how to write a binding.

type Config 

type Config struct {
	// It is expected that changes made via SchedulerCache will be observed
	// by NodeLister and Algorithm.
	SchedulerCache schedulerinternalcache.Cache
	// Ecache is used for optimistically invalid affected cache items after
	// successfully binding a pod
	Ecache     *equivalence.Cache
	NodeLister algorithm.NodeLister
	Algorithm  algorithm.ScheduleAlgorithm
	GetBinder  func(pod *v1.Pod) Binder
	// PodConditionUpdater is used only in case of scheduling errors. If we succeed
	// with scheduling, PodScheduled condition will be updated in apiserver in /bind
	// handler so that binding and setting PodCondition it is atomic.
	PodConditionUpdater PodConditionUpdater
	// PodPreemptor is used to evict pods and update pod annotations.
	PodPreemptor PodPreemptor

	// NextPod should be a function that blocks until the next pod
	// is available. We don't use a channel for this, because scheduling
	// a pod may take some amount of time and we don't want pods to get
	// stale while they sit in a channel.
	NextPod func() *v1.Pod

	// WaitForCacheSync waits for scheduler cache to populate.
	// It returns true if it was successful, false if the controller should shutdown.
	WaitForCacheSync func() bool

	// Error is called if there is an error. It is passed the pod in
	// question, and the error
	Error func(*v1.Pod, error)

	// Recorder is the EventRecorder to use
	Recorder record.EventRecorder

	// Close this to shut down the scheduler.
	StopEverything chan struct{}

	// VolumeBinder handles PVC/PV binding for the pod.
	VolumeBinder *volumebinder.VolumeBinder

	// Disable pod preemption or not.
	DisablePreemption bool
}

Config is an implementation of the Scheduler's configured input data. TODO over time we should make this struct a hidden implementation detail of the scheduler.

type ConfigFactoryArgs 

type ConfigFactoryArgs struct {
	SchedulerName                  string
	Client                         clientset.Interface
	NodeInformer                   coreinformers.NodeInformer
	PodInformer                    coreinformers.PodInformer
	PvInformer                     coreinformers.PersistentVolumeInformer
	PvcInformer                    coreinformers.PersistentVolumeClaimInformer
	ReplicationControllerInformer  coreinformers.ReplicationControllerInformer
	ReplicaSetInformer             appsinformers.ReplicaSetInformer
	StatefulSetInformer            appsinformers.StatefulSetInformer
	ServiceInformer                coreinformers.ServiceInformer
	PdbInformer                    policyinformers.PodDisruptionBudgetInformer
	StorageClassInformer           storageinformers.StorageClassInformer
	HardPodAffinitySymmetricWeight int32
	EnableEquivalenceClassCache    bool
	DisablePreemption              bool
	PercentageOfNodesToScore       int32
	BindTimeoutSeconds             int64
}

ConfigFactoryArgs is a set arguments passed to NewConfigFactory.

type Configurator 

type Configurator interface {
	// Exposed for testing
	GetHardPodAffinitySymmetricWeight() int32
	// Exposed for testing
	MakeDefaultErrorFunc(backoff *util.PodBackoff, podQueue internalqueue.SchedulingQueue) func(pod *v1.Pod, err error)

	// Predicate related accessors to be exposed for use by k8s.io/autoscaler/cluster-autoscaler
	GetPredicateMetadataProducer() (algorithm.PredicateMetadataProducer, error)
	GetPredicates(predicateKeys sets.String) (map[string]algorithm.FitPredicate, error)

	// Needs to be exposed for things like integration tests where we want to make fake nodes.
	GetNodeLister() corelisters.NodeLister
	// Exposed for testing
	GetClient() clientset.Interface
	// Exposed for testing
	GetScheduledPodLister() corelisters.PodLister

	Create() (*Config, error)
	CreateFromProvider(providerName string) (*Config, error)
	CreateFromConfig(policy schedulerapi.Policy) (*Config, error)
	CreateFromKeys(predicateKeys, priorityKeys sets.String, extenders []algorithm.SchedulerExtender) (*Config, error)
}

Configurator defines I/O, caching, and other functionality needed to construct a new scheduler. An implementation of this can be seen in factory.go.

func NewConfigFactory 

func NewConfigFactory(args *ConfigFactoryArgs) Configurator

NewConfigFactory initializes the default implementation of a Configurator. To encourage eventual privatization of the struct type, we only return the interface.

type FitPredicateFactory 

type FitPredicateFactory func(PluginFactoryArgs) algorithm.FitPredicate

FitPredicateFactory produces a FitPredicate from the given args.

type PluginFactoryArgs 

type PluginFactoryArgs struct {
	PodLister                      algorithm.PodLister
	ServiceLister                  algorithm.ServiceLister
	ControllerLister               algorithm.ControllerLister
	ReplicaSetLister               algorithm.ReplicaSetLister
	StatefulSetLister              algorithm.StatefulSetLister
	NodeLister                     algorithm.NodeLister
	PDBLister                      algorithm.PDBLister
	NodeInfo                       predicates.NodeInfo
	PVInfo                         predicates.PersistentVolumeInfo
	PVCInfo                        predicates.PersistentVolumeClaimInfo
	StorageClassInfo               predicates.StorageClassInfo
	VolumeBinder                   *volumebinder.VolumeBinder
	HardPodAffinitySymmetricWeight int32
}

PluginFactoryArgs are passed to all plugin factory functions.

type PodConditionUpdater 

type PodConditionUpdater interface {
	Update(pod *v1.Pod, podCondition *v1.PodCondition) error
}

PodConditionUpdater updates the condition of a pod based on the passed PodCondition

type PodPreemptor 

type PodPreemptor interface {
	GetUpdatedPod(pod *v1.Pod) (*v1.Pod, error)
	DeletePod(pod *v1.Pod) error
	SetNominatedNodeName(pod *v1.Pod, nominatedNode string) error
	RemoveNominatedNodeName(pod *v1.Pod) error
}

PodPreemptor has methods needed to delete a pod and to update annotations of the preemptor pod.

type PredicateMetadataProducerFactory 

type PredicateMetadataProducerFactory func(PluginFactoryArgs) algorithm.PredicateMetadataProducer

PredicateMetadataProducerFactory produces PredicateMetadataProducer from the given args.

type PriorityConfigFactory 

type PriorityConfigFactory struct {
	Function          PriorityFunctionFactory
	MapReduceFunction PriorityFunctionFactory2
	Weight            int
}

PriorityConfigFactory produces a PriorityConfig from the given function and weight

type PriorityFunctionFactory 

type PriorityFunctionFactory func(PluginFactoryArgs) algorithm.PriorityFunction

PriorityFunctionFactory produces a PriorityConfig from the given args. DEPRECATED Use Map-Reduce pattern for priority functions.

type PriorityFunctionFactory2 

type PriorityFunctionFactory2 func(PluginFactoryArgs) (algorithm.PriorityMapFunction, algorithm.PriorityReduceFunction)

PriorityFunctionFactory2 produces map & reduce priority functions from a given args. FIXME: Rename to PriorityFunctionFactory.

type PriorityMetadataProducerFactory 

type PriorityMetadataProducerFactory func(PluginFactoryArgs) algorithm.PriorityMetadataProducer

PriorityMetadataProducerFactory produces PriorityMetadataProducer from the given args.

Source Files

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