AF NOID writing to state file elicits complaints from rails.

af-noid_encoding_woes.rb

# Make a new rails application and drop this file in.
#
# Run from the command line with just plain ruby:
# bundle exec ruby doit.rb
#
# Run from the command line with rails:
# bundle exec rails runner "eval(File.read 'doit.rb')"

require 'active_fedora/noid'

def state_for(io_object)
  Marshal.load(io_object.read)
rescue TypeError, ArgumentError
  { template: ActiveFedora::Noid.config.template }
end

def write_state_to_file( out_file, out_state )
  begin
    puts "new state encoding #{out_state.encoding}"
    out_file.write( out_state )
  rescue Encoding::UndefinedConversionError => errz
    puts "Boom! Error: #{errz}"
  end
end

def mint_and_write( out_file )

  state = state_for(out_file)
  puts "state class: #{state.class}"
  minter = ::Noid::Minter.new(state)
  id = minter.mint
  puts "id: #{id}"

  out_file.rewind

  new_state = Marshal.dump(minter.dump)
  write_state_to_file( out_file, new_state )

  puts "End of Line."
end

puts "NOID with statefile opened in binary mode but WITHOUT explicit encoding."
statefile_one = '/tmp/stately01'
f_one = ::File.open(statefile_one, ::File::BINARY|::File::RDWR|::File::CREAT, 0644)
mint_and_write f_one
f_one.close

puts "\n-----\n\n"
puts "NOID with statefile opened in binary mode WITH explicitly set internal & external encoding"
statefile_two = '/tmp/stately02'
f_two = ::File.open(statefile_two, ::File::BINARY|::File::RDWR|::File::CREAT, 0644, encoding: Encoding::ASCII_8BIT)
mint_and_write f_two
f_two.close