Fast deploy using capistrano_rsync_with_remote_cache and turbo-sprockets-rails3

compile_assets_and_rsync_with_remote_cache.rb

# Requirements:
#   https://github.com/vigetlabs/capistrano_rsync_with_remote_cache
#   https://github.com/ndbroadbent/turbo-sprockets-rails3
require 'capistrano/recipes/deploy/strategy/rsync_with_remote_cache'
Capistrano::Deploy::Strategy::RsyncWithRemoteCache.class_eval do
  def deploy!
    update_local_cache
    prepare_assets
    update_remote_cache
    finalize_assets
    copy_remote_cache
  end

  def prepare_assets
    system([
      "test ! -d #{assets_cache} && mkdir -p #{assets_cache}",
      "mv #{assets_cache} #{assets_path}",
      "cd #{local_cache_path}",
      "RAILS_ENV=#{configuration[:rails_env]} bundle exec rake assets:precompile"
    ].join(';'))
  end

  def finalize_assets
    system("mv #{assets_path} #{assets_cache}")
  end

  def assets_cache
    File.expand_path(configuration[:assets_cache] || '.assets_cache')
  end

  def assets_path
    File.expand_path(File.join(local_cache_path, configuration[:assets_path] || 'public/assets'))
  end
end