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-rw-r--r--code/environments/production/modules/stdlib/lib/puppet/parser/functions/loadjson.rb32
1 files changed, 32 insertions, 0 deletions
diff --git a/code/environments/production/modules/stdlib/lib/puppet/parser/functions/loadjson.rb b/code/environments/production/modules/stdlib/lib/puppet/parser/functions/loadjson.rb
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+++ b/code/environments/production/modules/stdlib/lib/puppet/parser/functions/loadjson.rb
@@ -0,0 +1,32 @@
+#
+# loadjson.rb
+#
+module Puppet::Parser::Functions
+ newfunction(:loadjson, :type => :rvalue, :arity => -2, :doc => <<-'DOC') do |args|
+ Load a JSON file containing an array, string, or hash, and return the data
+ in the corresponding native data type.
+ The second parameter is the default value. It will be returned if the file
+ was not found or could not be parsed.
+
+ For example:
+
+ $myhash = loadjson('/etc/puppet/data/myhash.json')
+ $myhash = loadjson('no-file.json', {'default' => 'value'})
+ DOC
+
+ raise ArgumentError, 'Wrong number of arguments. 1 or 2 arguments should be provided.' unless args.length >= 1
+
+ if File.exists?(args[0]) # rubocop:disable Lint/DeprecatedClassMethods : Changing to .exist? breaks the code
+ begin
+ content = File.read(args[0])
+ PSON.load(content) || args[1]
+ rescue StandardError => e
+ raise e unless args[1]
+ args[1]
+ end
+ else
+ warning("Can't load '#{args[0]}' File does not exist!")
+ args[1]
+ end
+ end
+end