How to copy file across buckets using aws-s3 gem

Question

The aws-s3 documentation says:

  # Copying an object
  S3Object.copy 'headshot.jpg', 'headshot2.jpg', 'photos'

But how do I copy heashot.jpg from the photos bucket to the archive bucket for example

Thanks!

Deb

Answer 1

I believe that in order to copy between buckets you must read the file's contents from the source bucket and then write it back to the destination bucket via your application's memory space. There's a snippet showing this using aws-s3 here and another approach using right_aws here

Answer 2

Using the right_aws gem:

# With s3 being an S3 object acquired via S3Interface.new
# Copies key1 from bucket b1 to key1_copy in bucket b2:
s3.copy('b1', 'key1', 'b2', 'key1_copy')

the gotcha I ran into is that if you have pics/1234/yourfile.jpg the bucket is only pics and the key is 1234/yourfile.jpg

I got the answer from here: http://stackoverflow.com/questions/769848/how-do-i-copy-files-between-buckets-using-s3-from-a-rails-application