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module Puppet::Util module Json class ParseError < StandardError attr_reader :cause, :data def self.build(original_exception, data) new(original_exception.message).tap do |exception| exception.instance_eval do @cause = original_exception set_backtrace original_exception.backtrace @data = data end end end end begin require 'multi_json' # Force backend detection before attempting to use the library # or load any other JSON libraries MultiJson.default_adapter # Preserve core type monkey-patching done by the built-in JSON gem require 'json' rescue LoadError require 'json' end # Load the content from a file as JSON if # contents are in valid format. This method does not # raise error but returns `nil` when invalid file is # given. def self.load_file_if_valid(filename, options = {}) load_file(filename, options) rescue Puppet::Util::Json::ParseError, ArgumentError, Errno::ENOENT => detail Puppet.debug("Could not retrieve JSON content from '#{filename}': #{detail.message}") nil end # Load the content from a file as JSON. def self.load_file(filename, options = {}) json = Puppet::FileSystem.read(filename, :encoding => 'utf-8') load(json, options) end # These methods do similar processing to the fallback implemented by MultiJson # when using the built-in JSON backend, to ensure consistent behavior # whether or not MultiJson can be loaded. def self.load(string, options = {}) if defined? MultiJson begin # This ensures that JrJackson and Oj will parse very large or very small # numbers as floats rather than BigDecimals, which are serialized as # strings by the built-in JSON gem and therefore can cause schema errors, # for example, when we are rendering reports to JSON using `to_pson` in # PuppetDB. case MultiJson.adapter.name when "MultiJson::Adapters::JrJackson" options[:use_bigdecimal] = false when "MultiJson::Adapters::Oj" options[:bigdecimal_load] = :float end MultiJson.load(string, options) rescue MultiJson::ParseError => e raise Puppet::Util::Json::ParseError.build(e, string) end else begin string = string.read if string.respond_to?(:read) options[:symbolize_names] = true if options.delete(:symbolize_keys) ::JSON.parse(string, options) rescue JSON::ParserError => e raise Puppet::Util::Json::ParseError.build(e, string) end end end def self.dump(object, options = {}) if defined? MultiJson MultiJson.dump(object, options) elsif options.is_a?(JSON::State) # we're being called recursively object.to_json(options) else options.merge!(::JSON::PRETTY_STATE_PROTOTYPE.to_h) if options.delete(:pretty) object.to_json(options) end end end end