1、此函數用於將一個不確定長度的路徑拆分成一個數組,可接受兩個參數:
1.1 arg1: 一個有效的絕對路徑字符串[目前未做數據類型有效性檢查判斷]
1.2 arg2: 一個有效的數字,用於確認哪一部分是需要puppet創建的[[可選]未做邏輯有效性判斷,譬如傳遞數字大與路徑的有效層級數是不合理]
2、直接放在模塊對應的lib/puppet/parser/functions即可,這裏筆者直接放在stdlib的lib/puppet/parser/functions目錄下
3、未做數據類型以及邏輯錯誤判斷(譬如arg[2]的取值範圍)
4、代碼和簡單使用說明如下:
Code:
module Puppet::Parser::Functions newfunction(:path_to_array, :type => :rvalue) do |args| res = args[0] array = [] array.push(args[0]) if args.size == 1 while res != '/' do res = File.dirname(res) array.push(res) if res != '/' end elsif args.size == 2 e_count = args[1] - 1 e_count.times do res = File.dirname(res) array.push(res) if res != '/' end end return array end end # vim: set ts=2 sw=2 et :
Usage:
1、vim test.pp
$aaa=['/aaa/bbb/ccc/ddd', 2] $bbb=path_to_array($aaa[0]) $ccc=path_to_array($aaa[0], $aaa[1]) notify{ 'result_$bbb': message => [ $bbb ] } notify{ 'result_$ccc': message => [ $ccc ] }
2、puppet apply test.pp
Notice: Compiled catalog for puppet.mos.com in environment production in 1.03 seconds Notice: /aaa/bbb/ccc/ddd /aaa/bbb/ccc /aaa/bbb /aaa Notice: /Stage[main]/Main/Notify[result_$bbb]/message: defined 'message' as '/aaa/bbb/ccc/ddd /aaa/bbb/ccc /aaa/bbb /aaa' Notice: /aaa/bbb/ccc/ddd /aaa/bbb/ccc Notice: /Stage[main]/Main/Notify[result_$ccc]/message: defined 'message' as '/aaa/bbb/ccc/ddd /aaa/bbb/ccc' Notice: Finished catalog run in 0.60 seconds