rsync_provider_file.rb

require 'digest/md5'

action :sync do
  old_checksum = ::File.exists?(new_resource.name) ? ::Digest::MD5.file(new_resource.name) : nil

  execute "rsync file" do
    command "rsync -a -e '#{new_resource.command}' #{new_resource.source} #{new_resource.name}"
  end

  ruby_block "see if rsync_file[#{new_resource.name}] was updated" do
    block do
      new_checksum = ::Digest::MD5.file(new_resource.name)
      if old_checksum && old_checksum != new_checksum
        new_resource.updated_by_last_action true
      end
    end
  end
end

rsync_resource_file.rb

actions :sync
attribute :name,    :required => true, :kind_of => String, :name_attribute => true
attribute :source,  :required => true, :kind_of => String
attribute :command, :required => true, :kind_of => String