# File lib/hiera/backend/json_backend.rb, line 12 def lookup(key, scope, order_override, resolution_type) answer = nil Hiera.debug("Looking up #{key} in JSON backend") Backend.datasources(scope, order_override) do |source| Hiera.debug("Looking for data source #{source}") jsonfile = Backend.datafile(:json, scope, source, "json") || next next unless File.exist?(jsonfile) data = @cache.read_file(jsonfile, Hash) do |data| JSON.parse(data) end next if data.empty? next unless data.include?(key) # for array resolution we just append to the array whatever # we find, we then goes onto the next file and keep adding to # the array # # for priority searches we break after the first found data item new_answer = Backend.parse_answer(data[key], scope) case resolution_type when :array raise Exception, "Hiera type mismatch: expected Array and got #{new_answer.class}" unless new_answer.kind_of? Array or new_answer.kind_of? String answer ||= [] answer << new_answer when :hash raise Exception, "Hiera type mismatch: expected Hash and got #{new_answer.class}" unless new_answer.kind_of? Hash answer ||= {} answer = Backend.merge_answer(new_answer,answer) else answer = new_answer break end end return answer end
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