aws s3 add expire / cache header to existing objects

gistfile1.rb

AWS.config({
    :access_key_id => 'xxxxx',
    :secret_access_key => 'xxxxx',
})
bucket_name = 'xxxxx'


s3 = AWS::S3.new()
bucket = s3.buckets[bucket_name]

File.open('/tmp/listofkeys.txt').lines.each_with_index do |line,index|
  key    = line.strip
  object = bucket.objects[key]
  
  object.copy_to(key, :metadata => object.metadata.to_h, :content_type => object.content_type, :acl => :public_read, :expires=>"Thu, 31 Dec 2037 23:55:55 GMT", :cache_control=>"max-age=31556926")
  
  p "progress: #{index}" if index%100==0
end