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# frozen_string_literal: true
# @summary
# Generates a random alphanumeric string. Combining the `$fqdn` fact and an
# optional seed for repeatable randomness.
#
# Optionally, you can specify a character set for the function (defaults to alphanumeric).
Puppet::Functions.create_function(:'stdlib::fqdn_rand_string') do
# @param length The length of the resulting string.
# @param charset The character set to use.
# @param seed The seed for repeatable randomness.
#
# @return [String]
#
# @example Example Usage:
# stdlib::fqdn_rand_string(10)
# stdlib::fqdn_rand_string(10, 'ABCDEF!@$%^')
# stdlib::fqdn_rand_string(10, undef, 'custom seed')
dispatch :fqdn_rand_string do
param 'Integer[1]', :length
optional_param 'Optional[String]', :charset
optional_repeated_param 'Any', :seed
end
def fqdn_rand_string(length, charset = nil, *seed)
charset = if charset && !charset.empty?
charset.chars.to_a
else
(0..9).map(&:to_s) + ('A'..'Z').to_a + ('a'..'z').to_a
end
rand_string = ''
length.times do |current|
rand_string += charset[call_function('fqdn_rand', charset.size, (seed + [current + 1]).join(':'))]
end
rand_string
end
end
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