SimpleDB put_attributes using fog

sdb_put_attributes_with_fog.rb

require "fog"

CREDS_FILE = 'Somewhere'
DOMAIN = 'Dogs'
ATTRIBS_TO_CHANGE = {
  'color' => 'white'
}
OPTIONS = {
  :replace => ['color'],
  :expect => {
    'color' => 'blue'
  }
}
SELECT_QUERY = "select name, age, color from #{DOMAIN} where color = 'blue'"

def creds
  creds = File.readlines(CREDS_FILE)
  creds.map! { |c| c.chomp }
  {
    :aws_access_key_id => creds[0],
    :aws_secret_access_key => creds[1],
  }
end

sdb = Fog::AWS::SimpleDB.new(creds)
target_items = sdb.select(SELECT_QUERY).body['Items']
puts "Found #{target_items.size} items to replace. Continue? [y/n]"
STDOUT.flush
confirmation = gets

if confirmation.chomp.downcase == 'y'
  target_items.each_pair do |item_name, item|
    puts "Working on #{item_name} which has attribs: #{item.inspect}"
    sdb.put_attributes(DOMAIN, item_name, ATTRIBS_TO_CHANGE, OPTIONS)
    puts "Done"
  end
else
  puts "Doing nothing"
end