skippable_task.rb

module Capistrano
  class Configuration
    module Namespaces
      def skippable_task(name, *args, &block)
        task name, *args do
          if find_servers_for_task(current_task).empty?
            logger.info "skipping #{current_task.fully_qualified_name} since it matches no servers"
          else
            block.call
          end
        end
      end
    end
  end
end