This post explains how to iterate over the contents of an AWS S3 bucket and generate download links for each object. This example uses aws-sdk version 2. At the time of writing, version 3 is the latest but there’s still a lot of legacy apps that use v2.
Here’s the code:
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bucket = Aws::S3::Bucket.new(ENV['S3_CSV_BUCKET_NAME'])
bucket.objects.each do |obj|
puts obj.presigned_url(
:get,
expires_in: 1200, # 20 mins
response_content_type: 'text/csv',
response_content_disposition: "attachment; filename=#{obj.key}"
)
end
First, we initialize an Aws::S3::Bucket instance using the bucket name. Next, we call the objects method which returns a collection of all the objects in the bucket. We can then iterate over the collection and call presigned_url to generate download links for each object.