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rake task to migrate paperclip attachments to Amazon S3 using aws-sdk v1
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namespace :attachments do | |
task migrate_to_s3: :environment do | |
require 'aws-sdk' | |
# Define Paperclip models (change with your own) | |
models = [ | |
[Model1, :data], | |
[Model2, :logo] | |
] | |
# Load credentials and config | |
s3_options = YAML.load_file(File.join(Rails.root, 'config/aws.yml'))[Rails.env].symbolize_keys | |
paperclip_options = YAML.load_file(File.join(Rails.root, 'config/paperclip.yml'))[Rails.env].symbolize_keys | |
bucket_name = paperclip_options[:bucket] | |
# Establish S3 connection | |
AWS.config(s3_options) | |
s3 = AWS::S3.new | |
bucket = s3.buckets[bucket_name] | |
models.each do |klass, field| | |
styles = [] | |
# Collect all the styles, all are uploaded because `rake paperclip:refresh CLASS=Attachment` is broken for mongoid | |
klass.first.send(field).styles.each do |style| | |
styles.push(style[0]) | |
end | |
styles.push(:original) | |
# Process | |
klass.all.each_with_index do |attachment, n| | |
styles.each do |style| | |
path = attachment.send(field).path(style) | |
next if path.nil? | |
begin | |
bucket.objects[path].write(file: File.join(Rails.public_path, path)) | |
puts "-> Saved #{path} to S3 (#{n}/#{klass.count})" | |
rescue AWS::S3::Errors::NoSuchBucket => e | |
puts "--- Creating bucket named: #{bucket_name} ---" | |
AWS::S3.new.buckets.create(bucket_name) | |
retry | |
rescue StandardError => e | |
puts "Error on (#{n}/#{klass.count}): #{e}" | |
end | |
end | |
end | |
end | |
end | |
end |
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