local_skip_precompile.rb

if Rubber::Util.has_asset_pipeline?
  # load 'deploy/assets'

  _cset :asset_env, "RAILS_GROUPS=assets"
  _cset :assets_prefix, "assets"
  _cset :assets_role, [:app]
 
  _cset :normalize_asset_timestamps, false
 
  before 'deploy:finalize_update', 'deploy:assets:symlink'
  after 'deploy:update_code', 'deploy:assets:precompile'
 
  namespace :deploy do
    namespace :assets do
 
      desc <<-DESC
      Run the asset precompilation rake task. You can specify the full path \
      to the rake executable by setting the rake variable. You can also \
      specify additional environment variables to pass to rake via the \
      asset_env variable. The defaults are:
 
        set :rake,      "rake"
        set :rails_env, "production"
        set :asset_env, "RAILS_GROUPS=assets"
      DESC
      task :precompile, :roles => :app, :except => { :no_release => true } do
        from = source.next_revision(current_revision)
        ast = `#{source.local.log(from)} vendor/assets/ lib/assets/ app/assets/ Gemfile.lock`.strip rescue "1" #always
        if ast.length > 0 or ENV['FORCE_ASSETS']
          logger.info "Precompiling assets locally..."
          run_locally("RAILS_ENV=production rake assets:clean && RAILS_ENV=production rake assets:precompile")
          run_locally "cd public && tar -jcf assets.tar.bz2 assets"
          logger.info "#{shared_path}"
          top.upload "public/assets.tar.bz2", "#{shared_path}", :via => :scp
          run "cd #{shared_path} && tar -jxf assets.tar.bz2 && rm assets.tar.bz2"
          run_locally "rm public/assets.tar.bz2 && rm -r public/assets"
          run_locally("RAILS_ENV=production rake assets:clean && true")
        else
          logger.info "Skipping asset precompilation because there were no asset changes"
        end
      end
 
      desc <<-DESC
      [internal] This task will set up a symlink to the shared directory \
      for the assets directory. Assets are shared across deploys to avoid \
      mid-deploy mismatches between old application html asking for assets \
      and getting a 404 file not found error. The assets cache is shared \
      for efficiency. If you customize the assets path prefix, override the \
      :assets_prefix variable to match.
      DESC
      task :symlink, :roles => :app, :except => { :no_release => true } do
        run <<-CMD
        rm -rf #{latest_release}/public/#{assets_prefix} &&
        mkdir -p #{latest_release}/public &&
        mkdir -p #{shared_path}/assets &&
        ln -s #{shared_path}/assets #{latest_release}/public/#{assets_prefix}
        CMD
      end
    end
  end

  callbacks[:after].delete_if {|c| c.source == "deploy:assets:precompile"}
  callbacks[:before].delete_if {|c| c.source == "deploy:assets:symlink"}
  before "deploy:assets:precompile", "deploy:assets:symlink"
  after "rubber:config", "deploy:assets:precompile"
end