Class: UUID

Inherits:
Object
  • Object
show all
Defined in:
lib/toolbox/uuid.rb

Overview

A generic UUID class

== Usage

$ irb
require 'toolbox/uuid'
  => true
UUID.generate
  => "0a391631-22ba-40ea-af2e-65a64de4a42b"
UUID.generate
  => "092516ba-a2f4-45cf-9e1d-c5e63342aaa4"

Class Method Summary collapse

Class Method Details

.generate ⇒ Object

Generate a random UUID.

Attempts a few different ways, hopefully one of them work. If all fails, die.



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# File 'lib/toolbox/uuid.rb', line 21

def self.generate
  begin
    require 'securerandom'
    return SecureRandom.uuid()

  rescue Exception => e
    if (File.exist?("/usr/bin/uuidgen")) # Centos e2fsprogs package
      uuid = `/usr/bin/uuidgen`
      return uuid.chomp
    elsif (File.exist?("/usr/bin/uuid")) # Debian uuid package
      uuid = `/usr/bin/uuid`
      return uuid.chomp
    end
  end
  abort("Unable to generate UUIDs")
end