Puppet Function: nomad_cni::generate_mac

Defined in:
lib/puppet/functions/nomad_cni/generate_mac.rb
Function type:
Ruby 4.x API

Overview

nomad_cni::generate_mac(String $input_string) ⇒ String

Function to generated a decimal to IP address

Returns: Mac Address

Example: nomad_cni::generate_mac(‘some_string’)

returns 02:31:ee:76:26:1d:87"

Parameters:

  • input_string (String)

Returns:

  • (String) 


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# File 'lib/puppet/functions/nomad_cni/generate_mac.rb', line 11

Puppet::Functions.create_function(:'nomad_cni::generate_mac') do
  dispatch :generate_mac do
    param 'String', :input_string
    return_type 'String'
  end
  def generate_mac(input_string)
    # Hash the IP address to generate a unique value
    hashed_value = Digest::MD5.hexdigest(input_string)

    # Take the first 5 bytes of the hash to form the MAC address
    mac_address = hashed_value[0..9]

    # Format the MAC address with colons
    formatted_mac_address = mac_address.scan(%r{.{2}}).join(':')

    # Add a common MAC address prefix (Optional, but it can make it look more like a MAC address)
    final_mac_address = "02:#{formatted_mac_address}"

    final_mac_address
  end
end