internal

Documentation

Index

• type Controller
  • func NewController(ctx context.Context, options *Options, kubeClientset kubernetes.Interface, ...) *Controller
  • func (c *Controller) Run(ctx context.Context, workers int) error
• type FamilyType
• type MetricType
• type Options
  • func NewOptions(logger klog.Logger) *Options
  • func (o *Options) Read()
• type ResolverType
• type StoreType
  • func (s *StoreType) Add(objectI interface{}) error
  • func (s *StoreType) Delete(objectI interface{}) error
  • func (s *StoreType) Get(_ interface{}) (interface{}, bool, error)
  • func (s *StoreType) GetByKey(_ string) (interface{}, bool, error)
  • func (s *StoreType) List() []interface{}
  • func (s *StoreType) ListKeys() []string
  • func (s *StoreType) Replace(_ []interface{}, _ string) error
  • func (s *StoreType) Resync() error
  • func (s *StoreType) Update(objectI interface{}) error

Types

type Controller

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

Controller is the controller implementation for managed resources.

func NewController

func NewController(
	ctx context.Context,
	options *Options,
	kubeClientset kubernetes.Interface,
	crdmetricsClientset clientset.Interface,
	dynamicClientset dynamic.Interface,
) *Controller

NewController returns a new sample controller.

func (*Controller) Run

func (c *Controller) Run(ctx context.Context, workers int) error

Run starts the controller.

type FamilyType

type FamilyType struct {

	// Name is the Name of the metric family.
	Name string `yaml:"name"`

	// Help is the Help text for the metric family.
	Help string `yaml:"help"`

	// Metrics is a slice of Metrics that belong to the MetricType family.
	Metrics []*MetricType `yaml:"metrics"`

	// Resolver is the resolver to use to evaluate the labelset expressions.
	Resolver ResolverType `yaml:"resolver"`

	// LabelKeys is the set of inherited or defined label keys.
	LabelKeys []string `yaml:"labelKeys,omitempty"`

	// LabelValues is the set of inherited or defined label values.
	LabelValues []string `yaml:"labelValues,omitempty"`
	// contains filtered or unexported fields
}

FamilyType represents a metric family (a group of metrics with the same name).

type MetricType

type MetricType struct {

	// LabelKeys is the set of label keys.
	LabelKeys []string `yaml:"labelKeys"`

	// LabelValues is the set of label values.
	LabelValues []string `yaml:"labelValues"`

	// Value is the metric Value.
	Value string `yaml:"value"`

	// Resolver is the resolver to use to evaluate the labelset expressions.
	Resolver ResolverType `yaml:"resolver"`
}

MetricType represents a single time series.

type Options

type Options struct {
	AutoGOMAXPROCS  *bool
	RatioGOMEMLIMIT *float64
	Kubeconfig      *string
	MasterURL       *string
	SelfHost        *string
	SelfPort        *int
	MainHost        *string
	MainPort        *int
	TryNoCache      *bool
	Workers         *int
	Version         *bool
	// contains filtered or unexported fields
}

Options represents the command-line Options.

func NewOptions

func NewOptions(logger klog.Logger) *Options

NewOptions returns a new Options.

func (*Options) Read

func (o *Options) Read()

Read reads the command-line flags and applies overrides, if any.

type ResolverType

type ResolverType string

ResolverType represents the type of resolver to use to evaluate the labelset expressions.

const (

	// ResolverTypeCEL represents the CEL resolver.
	ResolverTypeCEL ResolverType = "cel"

	// ResolverTypeUnstructured represents the Unstructured resolver.
	ResolverTypeUnstructured ResolverType = "unstructured"

	// ResolverTypeNone represents an empty resolver.
	ResolverTypeNone ResolverType = ""
)

type StoreType

type StoreType struct {

	// Group is the API group of the custom resource.
	Group string `yaml:"g"`

	// Version is the API version of the custom resource.
	Version string `yaml:"v"`

	// Kind is the type of the custom resource.
	Kind string `yaml:"k"`

	// ResourceName is the name (plural) of the custom resource, in lowercase.
	ResourceName string `yaml:"r"`

	// Selectors is the selectors to use to filter the objects.
	Selectors struct {
		Label string `yaml:"label,omitempty"`
		Field string `yaml:"field,omitempty"`
	} `yaml:"selectors,omitempty"`

	// Families is a slice of metric families.
	Families []*FamilyType `yaml:"families"`

	// Resolver is the resolver to use to evaluate expressions.
	Resolver ResolverType `yaml:"resolver"`

	// LabelKeys is a slice of label keys.
	LabelKeys []string `yaml:"labelKeys,omitempty"`

	// LabelValues is a slice of label values.
	LabelValues []string `yaml:"labelValues,omitempty"`
	// contains filtered or unexported fields
}

StoreType implements the k8s.io/client-go/tools/cache.StoreType interface. The cache.Reflector uses the cache.StoreType to operate on the store.metrics map with the various metric families and their metrics based on the associated object's events.

func (*StoreType) Add

func (s *StoreType) Add(objectI interface{}) error

Add adds the given object to the accumulator associated with its key.

func (*StoreType) Delete

func (s *StoreType) Delete(objectI interface{}) error

Delete deletes the given object from the accumulator associated with its key.

func (*StoreType) Get

func (s *StoreType) Get(_ interface{}) (interface{}, bool, error)

Get returns the accumulator associated with the given object's key.

func (*StoreType) GetByKey

func (s *StoreType) GetByKey(_ string) (interface{}, bool, error)

GetByKey returns the accumulator associated with the given key.

func (*StoreType) List

func (s *StoreType) List() []interface{}

List returns a list of all the currently non-empty accumulators.

func (*StoreType) ListKeys

func (s *StoreType) ListKeys() []string

ListKeys returns a list of all the keys of the currently non-empty accumulators.

func (*StoreType) Replace

func (s *StoreType) Replace(_ []interface{}, _ string) error

Replace will delete the contents of the store, using instead the given list. store takes ownership of the list, you should not reference it after calling this function. NOTE: cache.Reflector starts off with Replace followed by Add rather than just Add, and as such this is skipped to avoid building stores twice.

func (*StoreType) Resync

func (s *StoreType) Resync() error

Resync is meaningless in the terms appearing here but has meaning in some implementations that have non-trivial additional behavior (e.g., DeltaFIFO).

func (*StoreType) Update

func (s *StoreType) Update(objectI interface{}) error

Update updates the given object in the accumulator associated with its key.