uuid

UUID Package

The uuid package provides functionality for generating and handling universally unique identifiers (UUIDs) in Go. This package supports multiple versions of UUIDs, including version 1, 2, 3, and 4.

Installation

To install the package, use the following command:

go get github.com/nandlabs/golly/uuid

• UUID Package
  • Installation
  • Usage
    • Generating UUIDs
      • Version 1 UUID
      • Version 2 UUID
      • Version 3 UUID
      • Version 4 UUID
    • Parsing UUIDs
  • License

Usage

Generating UUIDs

The uuid package provides functions to generate different versions of UUIDs.

Version 1 UUID

Version 1 UUIDs are based on the current timestamp and the MAC address of the machine.

package main

import (
    "fmt"
    "github.com/nandlabs/golly/uuid"
)

func main() {
    u, err := uuid.V1()
    if err != nil {
        fmt.Println("Error generating UUID:", err)
        return
    }
    fmt.Println("Version 1 UUID:", u.String())
}

Version 2 UUID

Version 2 UUIDs are based on the MAC address, process ID, and current timestamp.

package main

import (
    "fmt"
    "github.com/nandlabs/golly/uuid"
)

func main() {
    u, err := uuid.V2()
    if err != nil {
        fmt.Println("Error generating UUID:", err)
        return
    }
    fmt.Println("Version 2 UUID:", u.String())
}

Version 3 UUID

Version 3 UUIDs are based on a namespace and a name, using MD5 hashing.

package main

import (
    "fmt"
    "github.com/nandlabs/golly/uuid"
)

func main() {
    namespace := "example.com"
    name := "example"
    u, err := uuid.V3(namespace, name)
    if err != nil {
        fmt.Println("Error generating UUID:", err)
        return
    }
    fmt.Println("Version 3 UUID:", u.String())
}

Version 4 UUID

Version 4 UUIDs are randomly generated.

package main

import (
    "fmt"
    "github.com/nandlabs/golly/uuid"
)

func main() {
    u, err := uuid.V4()
    if err != nil {
        fmt.Println("Error generating UUID:", err)
        return
    }
    fmt.Println("Version 4 UUID:", u.String())
}

Parsing UUIDs

The ParseUUID function allows you to parse a UUID string into a UUID object.

package main

import (
    "fmt"
    "github.com/nandlabs/golly/uuid"
)

func main() {
    uuidStr := "123e4567-e89b-12d3-a456-426655440000"
    u, err := uuid.ParseUUID(uuidStr)
    if err != nil {
        fmt.Println("Error parsing UUID:", err)
        return
    }
    fmt.Println("Parsed UUID:", u.String())
}