table

Documentation

Index

• Variables
• func DecodeInt(b []byte) ([]byte, int64, error)
• func IsPureTableID(b []byte) bool
• func NewTableNamespaceClassifier(kv *core.KV, idAlloc core.IDAllocator) (namespace.Classifier, error)
• type IDDecoder
• type Key
  • func (k Key) HasPrefix(prefix Key) bool
• type Namespace
  • func NewNamespace(id uint64, name string) *Namespace
  • func (ns *Namespace) AddStoreID(storeID uint64)
  • func (ns *Namespace) AddTableID(tableID int64)
  • func (ns *Namespace) GetID() uint64
  • func (ns *Namespace) GetName() string

Variables

var DefaultIDDecoder defaultIDDecoder

DefaultIDDecoder is the default decoder. unit test will use other mocked decoder.

Functions

func DecodeInt

func DecodeInt(b []byte) ([]byte, int64, error)

DecodeInt decodes value encoded by EncodeInt before. It returns the leftover un-decoded slice, decoded value if no error.

func IsPureTableID

func IsPureTableID(b []byte) bool

IsPureTableID return true iff b is consist of tablePrefix and 8-byte tableID

func NewTableNamespaceClassifier

func NewTableNamespaceClassifier(kv *core.KV, idAlloc core.IDAllocator) (namespace.Classifier, error)

NewTableNamespaceClassifier creates a new namespace classifier that classifies stores and regions by table range.

Types

type IDDecoder

type IDDecoder interface {
	DecodeTableID(key Key) int64
}

IDDecoder defines method to extract tableID from key

type Key

type Key []byte

Key represents high-level Key type.

func (Key) HasPrefix

func (k Key) HasPrefix(prefix Key) bool

HasPrefix tests whether the Key begins with prefix.

type Namespace

type Namespace struct {
	ID       uint64          `json:"ID"`
	Name     string          `json:"Name"`
	TableIDs map[int64]bool  `json:"table_ids,omitempty"`
	StoreIDs map[uint64]bool `json:"store_ids,omitempty"`
}

Namespace defines two things: 1. relation between a Name and several tables 2. relation between a Name and several stores It is used to bind tables with stores

func NewNamespace

func NewNamespace(id uint64, name string) *Namespace

NewNamespace creates a new namespace

func (*Namespace) AddStoreID

func (ns *Namespace) AddStoreID(storeID uint64)

AddStoreID adds a storeID to this namespace

func (*Namespace) AddTableID

func (ns *Namespace) AddTableID(tableID int64)

AddTableID adds a tableID to this namespace

func (*Namespace) GetID

func (ns *Namespace) GetID() uint64

GetID returns namespace's ID or 0

func (*Namespace) GetName

func (ns *Namespace) GetName() string

GetName returns namespace's Name or default 'global' value