module-puppetlabs-apt/manifests/pin.pp
2014-02-16 14:51:39 +01:00

79 lines
2.1 KiB
Puppet

# pin.pp
# pin a release in apt, useful for unstable repositories
define apt::pin(
$ensure = present,
$explanation = "${::caller_module_name}: ${name}",
$order = '',
$packages = '*',
$priority = 0,
$release = '', # a=
$origin = '',
$version = '',
$codename = '', # n=
$release_version = '', # v=
$component = '', # c=
$originator = '', # o=
$label = '' # l=
) {
include apt::params
$preferences_d = $apt::params::preferences_d
if $order != '' and !is_integer($order) {
fail('Only integers are allowed in the apt::pin order param')
}
$pin_release_array = [
$release,
$codename,
$release_version,
$component,
$originator,
$label]
$pin_release = join($pin_release_array, '')
# Read the manpage 'apt_preferences(5)', especially the chapter
# 'Thea Effect of APT Preferences' to understand the following logic
# and the difference between specific and general form
if is_array($packages) {
$packages_string = join($packages, ' ')
} else {
$packages_string = $packages
}
if $packages_string != '*' { # specific form
if ( $pin_release != '' and ( $origin != '' or $version != '' )) or
( $origin != '' and ( $pin_release != '' or $version != '' )) or
( $version != '' and ( $pin_release != '' or $origin != '' )) {
fail('parameters release, origin, and version are mutually exclusive')
}
} else { # general form
if $version != '' {
fail('parameter version cannot be used in general form')
}
if ( $pin_release != '' and $origin != '' ) or
( $origin != '' and $pin_release != '' ) {
fail('parmeters release and origin are mutually exclusive')
}
}
$path = $order ? {
'' => "${preferences_d}/${name}.pref",
default => "${preferences_d}/${order}-${name}.pref",
}
file { "${name}.pref":
ensure => $ensure,
path => $path,
owner => root,
group => root,
mode => '0644',
content => template('apt/pin.pref.erb'),
}
}