module JSON # # Output JSON from ruby objects in such a manner that all the hashes and arrays are output in alphanumeric sorted order. # This is required so that our generated configs don't throw puppet or git for a tizzy fit. # # Beware: some hacky stuff ahead. # # This relies on the pure ruby implementation of JSON.generate (i.e. require 'json/pure') # see https://github.com/flori/json/blob/master/lib/json/pure/generator.rb # # The Oj way that we are not using: Oj.dump(obj, :mode => :compat, :indent => 2) # def self.sorted_generate(obj) # modify hash and array Array.class_eval do alias_method :each_without_sort, :each def each(&block) sorted = sort {|a,b| a.to_s <=> b.to_s } for i in 0..(sorted.length-1) do yield sorted[i] end end end Hash.class_eval do alias_method :each_without_sort, :each def each(&block) self.keys.each do |key| yield key, self.fetch(key) # fetch is used so we don't trigger Config::Object auto-eval end end end # generate json json_str = JSON.pretty_generate(obj) # restore hash and array Hash.class_eval {alias_method :each, :each_without_sort} Array.class_eval {alias_method :each, :each_without_sort} return json_str end end