From 4e5ebf3ad86b79710784f3c27a611ec436c4ba76 Mon Sep 17 00:00:00 2001 From: Giulio Fidente Date: Mon, 23 May 2016 21:09:21 +0200 Subject: Add lookup_hiera_hash function The lookup_hiera_hash function is meant to lookup for the value of a given key from a given Hiera hash. In the manifests this is possible by saving the value of the hash in a variable first but when driving lookups from the Heat templates we can't do it. Change-Id: Ie31bb70314db44a0a18e86090cc74aa4df5de169 --- lib/puppet/parser/functions/lookup_hiera_hash.rb | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 lib/puppet/parser/functions/lookup_hiera_hash.rb (limited to 'lib') diff --git a/lib/puppet/parser/functions/lookup_hiera_hash.rb b/lib/puppet/parser/functions/lookup_hiera_hash.rb new file mode 100644 index 0000000..d96d65f --- /dev/null +++ b/lib/puppet/parser/functions/lookup_hiera_hash.rb @@ -0,0 +1,22 @@ +module Puppet::Parser::Functions + newfunction(:lookup_hiera_hash, :arity => 2, :type => :rvalue, + :doc => "Lookup a key->value from a Hiera hash") do |args| + hash_name = args[0] + key_name = args[1] + unless hash_name.is_a?(String) and key_name.is_a?(String) + raise Puppet::ParseError, "The hash name and the key name must be given as strings." + end + if defined? call_function + hash = call_function('hiera', [hash_name]) + else + hash = function_hiera([hash_name]) + end + unless hash.is_a?(Hash) + raise Puppet::ParseError, "The value Hiera returned for #{hash_name} is not a Hash." + end + unless hash.key?(key_name) + raise Puppet::ParseError, "The Hiera hash #{hash_name} does not contain key #{key_name}." + end + return hash[key_name] + end +end -- cgit 1.2.3-korg