id

package

v0.6.0 Latest Latest Go to latest Published: Oct 1, 2026 License: Apache-2.0 Imports: 7 Imported by: 0

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Valid go.mod file
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Repository

github.com/Agent-Field/codeaf

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Documentation ¶

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Overview ¶

Package id generates prefixed, time-ordered identifiers. IDs encode a millisecond timestamp and per-timestamp counter in six big-endian bytes, followed by 14 modulo-biased base62 characters.

Index ¶

func Ascending(kind string, given ...string) (string, error)
func Create(prefix string, direction Direction, timestamp ...int64) (string, error)
func Descending(kind string, given ...string) (string, error)
func Prefix(kind string) (string, bool)
func SchemaAccepts(kind, value string) bool
func Timestamp(value string) (int64, error)
type Direction
type Generator
- func NewGenerator(now func() int64, random io.Reader) *Generator

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func Ascending ¶

func Ascending(kind string, given ...string) (string, error)

Ascending returns an ascending ID for kind. An absent or empty given value generates a new ID; any other value is prefix-checked and returned verbatim.

func Create ¶

func Create(prefix string, direction Direction, timestamp ...int64) (string, error)

Create uses the process-global generator and an optional explicit timestamp.

func Descending ¶

func Descending(kind string, given ...string) (string, error)

Descending returns a descending ID for kind; given is handled as in Ascending.

func Prefix ¶

func Prefix(kind string) (string, bool)

Prefix returns the short prefix for an entity kind.

func SchemaAccepts ¶

func SchemaAccepts(kind, value string) bool

SchemaAccepts reports whether value carries the prefix for kind.

func Timestamp ¶

func Timestamp(value string) (int64, error)

Timestamp extracts the millisecond timestamp from an ascending ID. It does not invert descending IDs.

Types ¶

type Direction ¶

type Direction string

Direction selects the timestamp byte ordering used by Create.

const (
	AscendingDirection  Direction = "ascending"
	DescendingDirection Direction = "descending"
)

type Generator ¶

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

Generator owns the monotonic counter and its injectable side effects.

func NewGenerator ¶

func NewGenerator(now func() int64, random io.Reader) *Generator

NewGenerator constructs an independent ID generator. Nil inputs use the wall clock and crypto/rand.

func (*Generator) Ascending ¶

func (g *Generator) Ascending(kind string, given ...string) (string, error)

Ascending generates with this Generator.

func (*Generator) Create ¶

func (g *Generator) Create(prefix string, direction Direction, timestamp ...int64) (string, error)

Create emits an ID from this Generator. State resets only when the current timestamp differs from the previous one; moving the clock backwards is accepted.

func (*Generator) Descending ¶

func (g *Generator) Descending(kind string, given ...string) (string, error)

Descending generates with this Generator.

Source Files ¶

View all Source files

id.go

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