coolbed/mgo-oid

A unique id generator that produces ids like mongodb object id.

mgo-oid

A unique id generator that produces ids like mongodb object id. This generator implementation refers the source code of mgo project, that's why it has mgo as its name prefix.

ObjectId

Object id is a globally unique identifier for object in mongodb. It consists of 12 bytes, divided as follows:

• a 4-byte value representing the seconds since the Unix epoch
• a 3-byte machine identifier
• a 2-byte process id
• a 3-byte counter, starting with a random value

Installation

Use the go command:

$ go get github.com/coolbed/mgo-oid

Example

package main

import (
	"fmt"

	"github.com/coolbed/mgo-oid"
)

func main() {
	objectID := oid.NewOID()
	fmt.Println("object id:", objectID.String())
	fmt.Println("object timestamp", objectID.Timestamp())
}