#
# parsejson.rb
#
-
module Puppet::Parser::Functions
- newfunction(:parsejson, :type => :rvalue, :doc => <<-EOS
-This function accepts JSON as a string and converts into the correct Puppet
-structure.
- EOS
- ) do |arguments|
+ newfunction(:parsejson, :type => :rvalue, :doc => <<-DOC
+ @summary
+ This function accepts JSON as a string and converts it into the correct
+ Puppet structure.
- if (arguments.size != 1) then
- raise(Puppet::ParseError, "parsejson(): Wrong number of arguments "+
- "given #{arguments.size} for 1")
- end
+ @return
+ convert JSON into Puppet structure
- json = arguments[0]
+ > *Note:*
+ The optional second argument can be used to pass a default value that will
+ be returned if the parsing of YAML string have failed.
+ DOC
+ ) do |arguments|
+ raise ArgumentError, 'Wrong number of arguments. 1 or 2 arguments should be provided.' unless arguments.length >= 1
- # PSON is natively available in puppet
- PSON.load(json)
+ begin
+ PSON.load(arguments[0]) || arguments[1]
+ rescue StandardError => e
+ raise e unless arguments[1]
+ arguments[1]
+ end
end
end