kubernetes

Documentation

Index

• Constants
• Variables
• func GetInClusterKubernetesClient() (kubernetes.Interface, error)
• func ValidateClient(container clientFacade) error
• type Client
  • func NewMockClient(podList *v1.PodList) (*Client, error)
  • func (c *Client) Close()
  • func (c *Client) Create(k, v string) error
  • func (c *Client) Done() <-chan struct{}
  • func (c *Client) GetChildren(k string) ([]string, []string, error)
  • func (c *Client) Valid() bool
  • func (c *Client) Watch(k string) (<-chan *WatcherEvent, <-chan struct{}, error)
  • func (c *Client) WatchWithPrefix(prefix string) (<-chan *WatcherEvent, <-chan struct{}, error)
• type EventListener
  • func NewEventListener(client *Client) *EventListener
  • func (l *EventListener) Close()
  • func (l *EventListener) ListenServiceEvent(key string, listener remoting.DataListener)
  • func (l *EventListener) ListenServiceNodeEvent(key string, listener ...remoting.DataListener) bool
  • func (l *EventListener) ListenServiceNodeEventWithPrefix(prefix string, listener ...remoting.DataListener)
• type Watcher
• type WatcherEvent
• type WatcherSet

Constants

const (

	// all pod annotation key
	DubboIOAnnotationKey = "dubbo.io/annotation"
	// all pod label key and value pair
	DubboIOLabelKey           = "dubbo.io/label"
	DubboIOConsumerLabelValue = "dubbo.io.consumer"
	DubboIOProviderLabelValue = "dubbo.io.provider"
)

const (
	Create eventType = iota
	Update
	Delete
)

Variables

var (
	ErrWatcherSetAlreadyStopped = perrors.New("the watcher-set already be stopped")
	ErrKVPairNotFound           = perrors.New("k/v pair not found")
)

var (
	ErrDubboLabelAlreadyExist = perrors.New("dubbo label already exist")
)

Functions

func GetInClusterKubernetesClient

func GetInClusterKubernetesClient() (kubernetes.Interface, error)

GetInClusterKubernetesClient current pod running in kubernetes-cluster

func ValidateClient

func ValidateClient(container clientFacade) error

ValidateClient validates the kubernetes client

Types

type Client

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

func NewMockClient

func NewMockClient(podList *v1.PodList) (*Client, error)

NewMockClient exports for registry package test

func (*Client) Close

func (c *Client) Close()

nolint

func (*Client) Create

func (c *Client) Create(k, v string) error

Create creates k/v pair in watcher-set

func (*Client) Done

func (c *Client) Done() <-chan struct{}

nolint

func (*Client) GetChildren

func (c *Client) GetChildren(k string) ([]string, []string, error)

GetChildren gets k children list from kubernetes-watcherSet

func (*Client) Valid

func (c *Client) Valid() bool

if returns false, the client is die

func (*Client) Watch

func (c *Client) Watch(k string) (<-chan *WatcherEvent, <-chan struct{}, error)

Watch watches on spec key

func (*Client) WatchWithPrefix

func (c *Client) WatchWithPrefix(prefix string) (<-chan *WatcherEvent, <-chan struct{}, error)

WatchWithPrefix watches on spec prefix

type EventListener

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

func NewEventListener

func NewEventListener(client *Client) *EventListener

func (*EventListener) Close

func (l *EventListener) Close()

func (*EventListener) ListenServiceEvent

func (l *EventListener) ListenServiceEvent(key string, listener remoting.DataListener)

this func is invoked by kubernetes ConsumerRegistry::Registry/ kubernetes ConsumerRegistry::get/kubernetes ConsumerRegistry::getListener registry.go:Listen -> listenServiceEvent -> listenDirEvent -> ListenServiceNodeEvent

|
--------> ListenServiceNodeEvent

func (*EventListener) ListenServiceNodeEvent

func (l *EventListener) ListenServiceNodeEvent(key string, listener ...remoting.DataListener) bool

Listen on a spec key this method returns true when spec key deleted, this method returns false when deep layer connection lose

func (*EventListener) ListenServiceNodeEventWithPrefix

func (l *EventListener) ListenServiceNodeEventWithPrefix(prefix string, listener ...remoting.DataListener)

Listen on a set of key with spec prefix

type Watcher

type Watcher interface {
	// the watcher's id
	ID() string
	// result stream
	ResultChan() <-chan *WatcherEvent
	// contains filtered or unexported methods
}

Watcher

type WatcherEvent

type WatcherEvent struct {
	// event-type
	EventType eventType `json:"-"`
	// the dubbo-go should consume the key
	Key string `json:"k"`
	// the dubbo-go should consume the value
	Value string `json:"v"`
}

WatcherEvent watch event is element in watcherSet

type WatcherSet

type WatcherSet interface {

	// put the watch event to the watch set
	Put(object *WatcherEvent) error
	// if prefix is false,
	// the len([]*WatcherEvent) == 1
	Get(key string, prefix bool) ([]*WatcherEvent, error)
	// watch the spec key or key prefix
	Watch(key string, prefix bool) (Watcher, error)
	// check the watcher set status
	Done() <-chan struct{}
}

Watchable WatcherSet thread-safe