discovery

Documentation

Index

• Variables
• type Event
  • func (in *Event) DeepCopy() *Event
  • func (in *Event) DeepCopyInto(out *Event)
• type EventType
  • func (t *EventType) MarshalText() ([]byte, error)
  • func (t *EventType) Set(str string) error
  • func (t EventType) String() string
  • func (t *EventType) UnmarshalText(text []byte) error
• type IRegistry
• type IWatcher
• type Node
  • func (in *Node) DeepCopy() *Node
  • func (in *Node) DeepCopyInto(out *Node)
• type Service
  • func (in *Service) DeepCopy() *Service
  • func (in *Service) DeepCopyInto(out *Service)

Variables

var (
	Name  = self.Name
	Using = self.Using
)

var (
	// ErrNotFound Not found error when IRegistry.GetService or IRegistry.GetServiceNode is called
	ErrNotFound = errors.New("registry: service not found")
	// ErrTerminated Stopped watching error when watcher is stopped
	ErrTerminated = errors.New("registry: watching terminated")
)

Types

type Event

type Event struct {
	Type    EventType `json:"type"`
	Service *Service  `json:"service"`
}

Event is returned by a call to Next on the watcher. Type can be create, update, delete +k8s:deepcopy-gen=true

func (*Event) DeepCopy

func (in *Event) DeepCopy() *Event

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Event.

func (*Event) DeepCopyInto

func (in *Event) DeepCopyInto(out *Event)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type EventType

type EventType int

EventType defines registry event type

const (
	// Create is emitted when a new service is registered
	Create EventType = iota
	// Delete is emitted when an existing service is deregsitered
	Delete
	// Update is emitted when an existing service is updated
	Update
)

func (*EventType) MarshalText

func (t *EventType) MarshalText() ([]byte, error)

MarshalText marshals the EventType to text.

func (*EventType) Set

func (t *EventType) Set(str string) error

Set converts a EventType string into a EventType value. returns error if the input string does not match known values.

func (EventType) String

func (t EventType) String() string

String returns human readable EventType.

func (*EventType) UnmarshalText

func (t *EventType) UnmarshalText(text []byte) error

UnmarshalText unmarshals text to a EventType.

type IRegistry

type IRegistry interface {
	// Register 注册服务
	Register(ctx context.Context, service *Service, ttl time.Duration) error
	// Deregister 取消注册服务
	Deregister(ctx context.Context, service *Service) error
	// RefreshTTL 刷新所有服务TTL
	RefreshTTL(ctx context.Context) error
	// GetServiceNode 查询服务节点
	GetServiceNode(ctx context.Context, serviceName string, nodeId uid.Id) (*Service, error)
	// GetService 查询服务
	GetService(ctx context.Context, serviceName string) (*Service, error)
	// ListServices 查询所有服务
	ListServices(ctx context.Context) ([]Service, error)
	// Watch 监听服务变化
	Watch(ctx context.Context, pattern string, revision ...int64) (IWatcher, error)
}

The IRegistry provides an interface for service discovery and an abstraction over varying implementations {consul, etcd, zookeeper, ...}

type IWatcher

type IWatcher interface {
	// Pattern watching pattern
	Pattern() string
	// Next is a blocking call
	Next() (*Event, error)
	// Terminate stop watching
	Terminate() <-chan struct{}
}

IWatcher is an interface that returns updates about services within the registry.

type Node

type Node struct {
	Id      uid.Id            `json:"id"`                // 节点ID
	Address string            `json:"address"`           // 节点的地址
	Version string            `json:"version,omitempty"` // 节点的服务版本号
	Meta    map[string]string `json:"meta,omitempty"`    // 节点元数据，以键值对的形式保存附加信息
}

Node 服务节点 +k8s:deepcopy-gen=true

func (*Node) DeepCopy

func (in *Node) DeepCopy() *Node

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Node.

func (*Node) DeepCopyInto

func (in *Node) DeepCopyInto(out *Node)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.

type Service

type Service struct {
	Name     string `json:"name"`               // 服务名称
	Nodes    []Node `json:"nodes"`              // 服务节点列表
	Revision int64  `json:"revision,omitempty"` // 数据版本号
}

Service 服务配置 +k8s:deepcopy-gen=true

func (*Service) DeepCopy

func (in *Service) DeepCopy() *Service

DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Service.

func (*Service) DeepCopyInto

func (in *Service) DeepCopyInto(out *Service)

DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.