118 lines
3.3 KiB
Puppet
118 lines
3.3 KiB
Puppet
# common/manifests/defines/concatenated_file.pp -- create a file from snippets
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# stored in a directory
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#
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# Copyright (C) 2007 David Schmitt <david@schmitt.edv-bus.at>
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# See LICENSE for the full license granted to you.
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module_dir { "common/cf": }
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# TODO:
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# * create the directory in _part too
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# This resource collects file snippets from a directory ($dir) and concatenates
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# them in lexical order of their names into a new file ($name). This can be
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# used to collect information from disparate sources, when the target file
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# format doesn't allow includes.
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#
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# concatenated_file_part can be used to easily configure content for this.
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#
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# If no $dir is specified, the target name with '.d' appended will be used.
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#
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# The $dir is purged by puppet and will only contain explicitely configured
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# files. This can be overridden by defining the directory before the
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# concatenated_file.
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#
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# Depend on File[$name] to change if and only if its contents change. Notify
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# Exec["concat_${name}"] if you want to force an update.
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#
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# Usage:
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# concatenated_file { "/etc/some.conf":
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# dir => "/etc/some.conf.d",
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# }
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define concatenated_file (
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# where the snippets are located
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$dir = '',
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# a file with content to prepend
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$header = '',
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# a file with content to append
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$footer = '',
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# default permissions for the target file
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$mode = 0644, $owner = root, $group = 0
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)
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{
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$dir_real = $dir ? { '' => "${name}.d", default => $dir }
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$tmp_file_name = regsubst($dir_real, '/', '_', 'G')
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$tmp_file = "${module_dir_path}/${tmp_file_name}"
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if defined(File[$dir_real]) {
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debug("${dir_real} already defined")
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} else {
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file {
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$dir_real:
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source => "puppet:///modules/common/empty",
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checksum => mtime,
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ignore => '.ignore',
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recurse => true, purge => true, force => true,
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mode => $mode, owner => $owner, group => $group,
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notify => Exec["concat_${name}"];
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}
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}
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file {
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$tmp_file:
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ensure => present, checksum => md5,
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mode => $mode, owner => $owner, group => $group;
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# decouple the actual file from the generation process by using a
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# temporary file and puppet's source mechanism. This ensures that events
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# for notify/subscribe will only be generated when there is an actual
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# change.
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$name:
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ensure => present, checksum => md5,
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source => $tmp_file,
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mode => $mode, owner => $owner, group => $group,
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require => File[$tmp_file];
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}
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# if there is a header or footer file, add it
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$additional_cmd = $header ? {
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'' => $footer ? {
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'' => '',
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default => "| cat - '${footer}' "
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},
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default => $footer ? {
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'' => "| cat '${header}' - ",
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default => "| cat '${header}' - '${footer}' "
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}
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}
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# use >| to force clobbering the target file
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exec { "concat_${name}":
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command => "/usr/bin/find ${dir_real} -maxdepth 1 -type f ! -name '*puppettmp' -print0 | sort -z | xargs -0 cat ${additional_cmd} >| ${tmp_file}",
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subscribe => [ File[$dir_real] ],
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before => File[$tmp_file],
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alias => [ "concat_${dir_real}"],
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loglevel => info
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}
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}
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# Add a snippet called $name to the concatenated_file at $dir.
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# The file can be referenced as File["cf_part_${name}"]
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define concatenated_file_part (
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$dir, $content = '', $ensure = present,
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$mode = 0644, $owner = root, $group = 0
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)
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{
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file { "${dir}/${name}":
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ensure => $ensure, content => $content,
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mode => $mode, owner => $owner, group => $group,
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alias => "cf_part_${name}",
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notify => Exec["concat_${dir}"],
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}
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}
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