riak_openable.rb

module CarrierWave
  module Uploader
    module RiakOpenable
      # When using riak, we can not access to file directory.
      # RiakOpenable#open provide tempfile which contains copy from server.
      def open(*args)
        options = args.extract_options!

        file_opts = options.merge(binmode: true)

        extname = File.extname(filename)
        filename_option = [File.basename(filename, extname), extname]
        tempfile = Tempfile.new(filename_option, file_opts)
        tempfile.write(read)

        if block_given?
          begin
            yield(tempfile)
          rescue => e
            tempfile.close!
          end
        else
          tempfile
        end
      end
    end
  end
e