Puppet Function: generate_server_names

Defined in:
lib/puppet/parser/functions/generate_server_names.rb
Function type:
Ruby 3.x API

Overview

generate_server_names() ⇒ Any

This function applies a suffix and a prefix to all elements in an array.

Examples:

$server_names = [ 'test1.ch', 'test2.ch' ]
$supre = {
  'suffix' => [ '.server1', '.server2' ],
  'prefix' => [ 'www.', 'dev.' ],
}
generate_server_names($server_names,$supre)

Will return: [“test1.ch”, “test2.ch”, “www.test1.ch”, “dev.test1.ch”, “www.test2.ch”,

"dev.test2.ch", "test1.ch.server1", "test1.ch.server2", "test2.ch.server1", "test2.ch.server2"]

Returns:

  • (Any) 


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# File 'lib/puppet/parser/functions/generate_server_names.rb', line 6

newfunction(:generate_server_names, :type => :rvalue, :doc => <<-EOS

This function applies a suffix and a prefix to all elements in an array.

*Examples:*
$server_names = [ 'test1.ch', 'test2.ch' ]
$supre = {
  'suffix' => [ '.server1', '.server2' ],
  'prefix' => [ 'www.', 'dev.' ],
}
generate_server_names($server_names,$supre)

Will return:
["test1.ch", "test2.ch", "www.test1.ch", "dev.test1.ch", "www.test2.ch",
 "dev.test2.ch", "test1.ch.server1", "test1.ch.server2", "test2.ch.server1", "test2.ch.server2"]

EOS
) do |arguments|

  # Two arguments are required
  raise(Puppet::ParseError, "generate_server_names(): Wrong number of arguments " +
    "given (#{arguments.size} for 2)") if arguments.size != 2

  input = arguments[0]
  unless input.is_a?(Array)
     raise Puppet::ParseError, "generate_server_names(): expected first argument to be an Array, got #{array.inspect}"
  end

  unless arguments[1].is_a?(Hash)
     raise Puppet::ParseError, "generate_server_names(): expected second argument to be a Hash, got #{array.inspect}"
  end

  suffix = arguments[1]['suffix']
  prefix = arguments[1]['prefix']

  suffixed = []
  input.each do |i|
    suffix.each do |s|
     suffixed << i + s
    end
  end

  prefixed = []
  input.each do |i|
    prefix.each do |s|
     prefixed << s + i
    end
  end

  unioned1 = input | prefixed
  unioned = unioned1 | suffixed

  return unioned

end