Example image manipulation worker from S3 using rmagick and aws-sdk-ruby

photo_processor.rb

require 'RMagick'

class PhotoProcessor

  def self.process(entry_id)
    
    entry = Entry.find entry_id
    
    raise "The photo for this entry has already been processed" if entry.image_processed?

    AWS.config(access_key_id: AWS_ACCESS_KEY_ID, secret_access_key: AWS_SECRET_ACCESS_KEY)

    s3          = AWS::S3.new
    bucket      = s3.buckets[S3_BUCKET]

    filename    = entry.image.gsub("photos/", "").gsub("/", "-")
    local_orig  = "tmp/#{filename}"
    local_large = "tmp/large_#{filename}"
    local_thumb = "tmp/thumb_#{filename}"

    photo       = bucket.objects[entry.image]
    photo_large = bucket.objects[entry.image_large]
    photo_thumb = bucket.objects[entry.image_thumb]
    
    File.open(local_orig, 'wb') do |file|
      photo.read do |chunk|
        file.write(chunk)
      end        
    end

    photo.write(Pathname.new(local_orig))

    img = Magick::Image.read(local_orig).first
    img = img.auto_orient

    img.resize_to_fit!(360, 360).write(local_large)
    photo_large.write(Pathname.new(local_large))

    img.resize_to_fill!(200, 200).write(local_thumb)
    photo_thumb.write(Pathname.new(local_thumb))

    File.delete(local_orig, local_large, local_thumb)

    entry.update_attribute :image_processed, true    
  end
end

Hi there,
where is the "Entry" class from?