s3 rake uploader

s3.rake

require 'aws/s3'

namespace :s3 do

  desc "Upload assets to AWS s3"
  task :deploy, [:bucket] => [:environment] do |t, args|
    config ||= YAML.load(ERB.new(IO.read(File.join(Rails.root, "config/s3.yml"))).result)[Rails.env] rescue nil || {}
    bucket = args[:bucket].present? ? args[:bucket] : config['bucket']
    uploads = []
    files = Pathname.glob('public/**/*').each do |pn|
      uploads.push "#{pn.dirname}/#{pn.basename}" unless pn.directory?
    end

    puts
    puts "---- Uploading s3 bucket: #{bucket} ----"
    puts

    if uploads.any?
      AWS::S3::Base.establish_connection!(
        :access_key_id     => config['access_key_id'],
        :secret_access_key => config['secret_access_key']
      )
      uploads.each do |file|
        basename = file.sub(/public\//, '')
        puts "= Uploading #{file}"
        AWS::S3::S3Object.store(
          basename,
          File.open(file),
          bucket,
          :access => :public_read
        )
      end
    else
      puts "= Nothing to upload to s3"
    end

    puts
    puts "---- Done ----"
    puts
  end

end

useage.sh

$ rake s3:deploy

OR

$ rake s3:deploy[bucket-name]