define apt::sources_list($ensure, $content = false, $source = false, $keyid= false, $keyserver = "keyserver.ubuntu.com") {

  if $content {
    file { "/etc/apt/sources.list.d/${name}.list":
      ensure  => $ensure,
      content => $content,
      owner   => 'root',
      group   => 'root',
      mode    => '0644',
      before  => Exec["apt-get_update"],
      notify  => Exec["apt-get_update"],
    }
    if $keyid {
      case $ensure {
          present: {
            exec { "Import $keyid to apt keystore":
              path        => '/bin:/usr/bin',
              environment => 'HOME=/root',
              command     => "apt-key adv --keyserver $keyserver --recv-keys $keyid",
              user        => 'root',
              group       => 'root',
              unless      => "apt-key list | grep $keyid",
              logoutput   => on_failure,
              before  => Exec["apt-get_update"],
              notify  => Exec["apt-get_update"],
            }
          }
          absent: {
            exec { "Remove $keyid from apt keystore":
              path    => '/bin:/usr/bin',
              environment => 'HOME=/root',
              command => "apt-key del $keyid",
              user    => 'root',
              group   => 'root',
              onlyif  => "apt-key list | grep $keyid",
              before  => Exec["apt-get_update"],
              notify  => Exec["apt-get_update"],
            }
          }
          default: {
            fail "Invalid 'ensure' value '$ensure' for apt::key"
          }

        }
      }
  }

}