S3の既存データにcache_controlを追加するスクリプト

s3_add_headers.rb

require 'aws-sdk'

ACCESS_KEY_ID = 'xxxx'
SECRET_ACCESS_KEY = 'xxxx'
BUKETS = 'xxxx'

s3 = AWS::S3.new(
  access_key_id:  ACCESS_KEY_ID,
  secret_access_key: SECRET_ACCESS_KEY)

bucket = s3.buckets[BUKETS]
one_year_in_seconds = 365 * 24 * 60 * 60
o = bucket.objects[ARGV[0]]

o.copy_to o.key, cache_control: "public, max-age=#{one_year_in_seconds}"