worker

Documentation

Index

• Constants
• func Add(mgr manager.Manager, args AddArgs) error
• func ApplyMachineResources(ctx context.Context, c client.Client) error
• func ApplyMachineResourcesForConfig(ctx context.Context, config *rest.Config) error
• func ClusterToWorkerMapper(predicates []predicate.Predicate) handler.Mapper
• func DefaultPredicates(ignoreOperationAnnotation bool) []predicate.Predicate
• func DiskSize(size string) (int, error)
• func DistributeOverZones(zoneIndex, size, zoneSize int) int
• func DistributePercentOverZones(zoneIndex int, percent string, zoneSize, total int) string
• func DistributePositiveIntOrPercent(zoneIndex int, intOrPercent intstr.IntOrString, zoneSize int, total int) intstr.IntOrString
• func NewReconciler(mgr manager.Manager, actuator Actuator) reconcile.Reconciler
• func WorkerPoolHash(pool extensionsv1alpha1.WorkerPool, cluster *extensionscontroller.Cluster) (string, error)
• type Actuator
• type AddArgs
• type Config
  • func (c *Config) Apply(ignore *bool)
• type MachineDeployment
• type MachineDeployments
  • func (m MachineDeployments) HasClass(className string) bool
  • func (m MachineDeployments) HasDeployment(name string) bool
  • func (m MachineDeployments) HasSecret(secretName string) bool
• type Options
  • func (c *Options) AddFlags(fs *pflag.FlagSet)
  • func (c *Options) Complete() error
  • func (c *Options) Completed() *Config

Constants

const (
	// FinalizerName is the worker controller finalizer.
	FinalizerName = "extensions.gardener.cloud/worker"
	// ControllerName is the name of the controller.
	ControllerName = "worker_controller"
)

const (
	// DeployCRDsFlag is the name of the command line flag to specify whether the worker CRDs
	// should be deployed or not.
	DeployCRDsFlag = "deploy-crds"
)

Functions

func Add

func Add(mgr manager.Manager, args AddArgs) error

Add creates a new Worker Controller and adds it to the Manager. and Start it when the Manager is Started.

func ApplyMachineResources

func ApplyMachineResources(ctx context.Context, c client.Client) error

ApplyMachineResources ensures that all well-known machine CRDs are created or updated. TODO: Use github.com/gardener/gardener/pkg/utils/flow.Parallel as soon as we can vendor a new Gardener version again.

func ApplyMachineResourcesForConfig

func ApplyMachineResourcesForConfig(ctx context.Context, config *rest.Config) error

ApplyMachineResourcesForConfig ensures that all well-known machine CRDs are created or updated.

func ClusterToWorkerMapper

func ClusterToWorkerMapper(predicates []predicate.Predicate) handler.Mapper

ClusterToWorkerMapper returns a mapper that returns requests for Worker whose referenced clusters have been modified.

func DefaultPredicates

func DefaultPredicates(ignoreOperationAnnotation bool) []predicate.Predicate

DefaultPredicates returns the default predicates for a Worker reconciler.

func DiskSize

func DiskSize(size string) (int, error)

DiskSize extracts the numerical component of DiskSize strings, i.e. strings like "10Gi" and returns it as string, i.e. "10" will be returned.

func DistributeOverZones

func DistributeOverZones(zoneIndex, size, zoneSize int) int

DistributeOverZones is a function which is used to determine how many nodes should be used for each availability zone. It takes the number of availability zones (<zoneSize>), the index of the current zone (<zoneIndex>) and the number of nodes which must be distributed over the zones (<size>) and returns the number of nodes which should be placed in the zone of index <zoneIndex>. The distribution happens equally. In case of an uneven number <size>, the last zone will have one more node than the others.

func DistributePercentOverZones

func DistributePercentOverZones(zoneIndex int, percent string, zoneSize, total int) string

DistributePercentOverZones distributes a given percentage value over zones in relation to the given total value. In case the total value is evenly divisible over the zones, this always just returns the initial percentage. Otherwise, the total value is used to determine the weight of a specific zone in relation to the other zones and adapt the given percentage accordingly.

func DistributePositiveIntOrPercent

func DistributePositiveIntOrPercent(zoneIndex int, intOrPercent intstr.IntOrString, zoneSize int, total int) intstr.IntOrString

DistributePositiveIntOrPercent distributes a given int or percentage value over zones in relation to the given total value. In case the total value is evenly divisible over the zones, this always just returns the initial percentage. Otherwise, the total value is used to determine the weight of a specific zone in relation to the other zones and adapt the given percentage accordingly.

func NewReconciler

func NewReconciler(mgr manager.Manager, actuator Actuator) reconcile.Reconciler

NewReconciler creates a new reconcile.Reconciler that reconciles Worker resources of Gardener's `extensions.gardener.cloud` API group.

func WorkerPoolHash

func WorkerPoolHash(pool extensionsv1alpha1.WorkerPool, cluster *extensionscontroller.Cluster) (string, error)

WorkerPoolHash returns a hash value for a given worker pool and a given cluster resource.

Types

type Actuator

type Actuator interface {
	// Reconcile reconciles the Worker.
	Reconcile(context.Context, *extensionsv1alpha1.Worker, *extensionscontroller.Cluster) error
	// Delete deletes the Worker.
	Delete(context.Context, *extensionsv1alpha1.Worker, *extensionscontroller.Cluster) error
}

Actuator acts upon Worker resources.

type AddArgs

type AddArgs struct {
	// Actuator is an worker actuator.
	Actuator Actuator
	// ControllerOptions are the controller options used for creating a controller.
	// The options.Reconciler is always overridden with a reconciler created from the
	// given actuator.
	ControllerOptions controller.Options
	// Predicates are the predicates to use.
	// If unset, GenerationChangedPredicate will be used.
	Predicates []predicate.Predicate
	// Type is the type of the resource considered for reconciliation.
	Type string
}

AddArgs are arguments for adding an worker controller to a manager.

type Config

type Config struct {
	// DeployCRDs defines whether to ignore the operation annotation or not.
	DeployCRDs bool
}

Config is a completed controller configuration.

func (*Config) Apply

func (c *Config) Apply(ignore *bool)

Apply sets the values of this Config in the given controller.Options.

type MachineDeployment

type MachineDeployment struct {
	Name           string
	ClassName      string
	SecretName     string
	Minimum        int
	Maximum        int
	MaxSurge       intstr.IntOrString
	MaxUnavailable intstr.IntOrString
	Labels         map[string]string
	Annotations    map[string]string
	Taints         []corev1.Taint
}

MachineDeployment holds information about the name, class, replicas of a MachineDeployment managed by the machine-controller-manager.

type MachineDeployments

type MachineDeployments []MachineDeployment

MachineDeployments is a list of machine deployments.

func (MachineDeployments) HasClass

func (m MachineDeployments) HasClass(className string) bool

HasClass checks whether the <className> is part of the <machineDeployments> list, i.e. whether there is an entry whose 'ClassName' attribute matches <name>. It returns true or false.

func (MachineDeployments) HasDeployment

func (m MachineDeployments) HasDeployment(name string) bool

HasDeployment checks whether the <name> is part of the <machineDeployments> list, i.e. whether there is an entry whose 'Name' attribute matches <name>. It returns true or false.

func (MachineDeployments) HasSecret

func (m MachineDeployments) HasSecret(secretName string) bool

HasSecret checks whether the <secretName> is part of the <machineDeployments> list, i.e. whether there is an entry whose 'SecretName' attribute matches <name>. It returns true or false.

type Options

type Options struct {
	// DeployCRDs defines whether to ignore the operation annotation or not.
	DeployCRDs bool
	// contains filtered or unexported fields
}

Options are command line options that can be set for controller.Options.

func (*Options) AddFlags

func (c *Options) AddFlags(fs *pflag.FlagSet)

AddFlags implements Flagger.AddFlags.

func (*Options) Complete

func (c *Options) Complete() error

Complete implements Completer.Complete.

func (*Options) Completed

func (c *Options) Completed() *Config

Completed returns the completed Config. Only call this if `Complete` was successful.