Download file from S3 to Rails 4 app

Question

I have an AWS VM that runs a daily task and generates several files. I want my Rails app to download these files and place them in a folder within the app. Is there a gem or method in Ruby that can do this?

I know how to do it in bash with s3cmd and I guess I could create a script to get them this way, but looking for a more native rails way.

I am using the data in these files for the app, but I don't want the users to be able to download them.

Answer 1

The aws-sdk v2 gem provides a simple interface for downloading objects from Amazon S3.

require 'aws-sdk'

s3 = Aws::S3::Resource.new(
  region: 'us-east-1',
  access_key_id: '...',
  secret_access_key: '...'
)

s3.bucket('bucket-name').object('key').get(response_target: '/path/to/file')

Answer 2

You can use download_file method provided by aws-sdk.
s3 = Aws::S3::Resource.new(
  region: 'us-east-1',
  access_key_id: '...',
  secret_access_key: '...'
)
file_path = "file path name to download"
s3.bucket('bucket-name').object('key').download_file(file_path)