guid

Documentation

Overview

Package guid implements a thread-safe ID generator. The returned ID will be unique for a given process, but will not be globally unique. This is because it uses the system clock and a sequence.

The ID returned is YYYYMMDD-HH24MI-SSSS-SSSS-NNNNNNNNNNNN, where the date is UTC and N is a zero-padded sequence that starts at zero.

Index

• type Generator
  • func New(seq int) *Generator
  • func (g *Generator) CurrVal() int
  • func (g *Generator) Next() string
  • func (g *Generator) NextVal() int

Types

type Generator

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

Generator holds our lock and current value.

func New

func New(seq int) *Generator

New returns a new generator starting at the sequence. It's useful if you're interested in restoring a generator.

func (*Generator) CurrVal

func (g *Generator) CurrVal() int

CurrVal returns the current value of the sequence.

func (*Generator) Next

func (g *Generator) Next() string

Next returns a string that looks like a UUID.

func (*Generator) NextVal

func (g *Generator) NextVal() int

NextVal increments the sequence, then returns the new value.