table

package

v1.0.2 Latest Latest Go to latest Published: Nov 13, 2017 License: Apache-2.0 Imports: 18 Imported by: 0

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Repository

github.com/lightkool/pd

Links

Open Source Insights

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

Constants ¶

This section is empty.

Variables ¶

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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

Source Files ¶

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