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# GlusterFS module by James
# Copyright (C) 2012-2013+ James Shubin
# Written by James Shubin <james@shubin.ca>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# NOTE: thanks to Joe Julian for: http://community.gluster.org/q/what-is-the-command-that-someone-can-run-to-get-the-value-of-a-given-property/
define gluster::volume::property(
$value,
$autotype = true # set to false to disable autotyping
) {
include gluster::xml
include gluster::vardir
include gluster::volume::property::data
#$vardir = $::gluster::vardir::module_vardir # with trailing slash
$vardir = regsubst($::gluster::vardir::module_vardir, '\/$', '')
$split = split($name, '#') # do some $name parsing
$volume = $split[0] # volume name
$key = $split[1] # key name
if ! ( "${volume}#${key}" == "${name}" ) {
fail('The property $name must match a $volume#$key pattern.')
}
# split out $etype and $jchar lookup into a separate file
$etypes = $::gluster::volume::property::data::etypes
$jchars = $::gluster::volume::property::data::jchars
# transform our etypes into short etypes (missing the prefix)
# TODO: we should see if there are duplicates (collisions)
# if there are collisions, and a gluster volume set group type contains
# one of these keys, then it's ambiguous and it's clearly a gluster bug
$short_etypes_yaml = inline_template('<%= @etypes.inject({}) {|h, (x,y)| h[ (x.index(".").nil?? x : x[x.index(".")+1..-1]) ] = y; h }.to_yaml %>')
$short_jchars_yaml = inline_template('<%= @jchars.inject({}) {|h, (x,y)| h[ (x.index(".").nil?? x : x[x.index(".")+1..-1]) ] = y; h }.to_yaml %>')
$short_etypes = parseyaml($short_etypes_yaml)
$short_jchars = parseyaml($short_jchars_yaml)
# FIXME: a short key should lookup the equivalent in the normal table,
# and vice-versa, and set an alias so that you can't define a short
# key and a long key at the same time which refer to the same variable!
# expected type
if has_key($etypes, "${key}") {
$etype = $etypes["${key}"] ? {
'' => 'undefined',
default => $etypes["${key}"],
}
# the keys of these etypes are missing their prefix up to the first '.'
} elsif has_key($short_etypes, "${key}") {
$etype = $short_etypes["${key}"] ? {
'' => 'undefined',
default => $short_etypes["${key}"],
}
} else {
$etype = 'undefined'
}
if (! $autotype) {
if type($value) != 'string' {
fail('Expecting type(string) if autotype is disabled.')
}
$safe_value = shellquote($value) # TODO: is this the safe thing?
# if it's a special offon type and of an acceptable value
} elsif ($etype == 'offon') { # default is off
if type($value) == 'boolean' {
$safe_value = $value ? {
true => 'on',
default => 'off',
}
} elsif type($value) == 'string' {
$downcase_value = inline_template('<%= @value.downcase %>')
$safe_value = $downcase_value ? {
'on' => 'on',
#'off' => 'off',
default => 'off',
}
} else {
fail("Gluster::Volume::Property[${key}] must be type: ${etype}.")
}
# if it's a special onoff type and of an acceptable value
} elsif ($etype == 'onoff') { # default is on
if type($value) == 'boolean' {
$safe_value = $value ? {
false => 'off',
default => 'on',
}
} elsif type($value) == 'string' {
$downcase_value = inline_template('<%= @value.downcase %>')
$safe_value = $downcase_value ? {
'off' => 'off',
#'on' => 'on',
default => 'on',
}
} else {
fail("Gluster::Volume::Property[${key}] must be type: ${etype}.")
}
} elsif $etype == 'integer' {
# TODO: we could also add range and/or set validation
$safe_value = inline_template('<%= [Fixnum, String].include?(@value.class) ? @value.to_i : "null" %>')
if "${safe_value}" == 'null' { # value was of an invalid type!
fail("Gluster::Volume::Property[${key}] must be type: ${etype}.")
}
} elsif $etype == 'string' {
$safe_value = shellquote($value) # TODO: is this the safe thing?
# if it's not a string and it's not the expected type, fail
} elsif ( type($value) != $etype ) { # type() from puppetlabs-stdlib
fail("Gluster::Volume::Property[${key}] must be type: ${etype}.")
# convert to correct type
} else {
if $etype == 'string' {
$safe_value = shellquote($value) # TODO: is this the safe thing?
} elsif $etype == 'array' {
# join char
if has_key($jchars, "${key}") {
$jchar = $jchars["${key}"]
} elsif has_key($short_jchars, "${key}") {
$jchar = $short_jchars["${key}"]
} else {
$jchar = ''
}
$safe_value = inline_template('<%= @value.join(jchar) %>')
#} elsif ... { # TODO: add more conversions here if needed
} else {
fail("Unknown type: ${etype}.")
}
}
# volume set <VOLNAME> <KEY> <VALUE>
# set a volume property only if value doesn't match what is available
# FIXME: check that the value we're setting isn't the default
# FIXME: you can check defaults with... gluster volume set help | ...
exec { "/usr/sbin/gluster volume set ${volume} ${key} ${safe_value}":
unless => "/usr/bin/test \"`/usr/sbin/gluster volume --xml info ${volume} | ${vardir}/xml.py property --key '${key}'`\" = '${safe_value}'",
onlyif => "/usr/sbin/gluster volume list | /bin/grep -qxF '${volume}' -",
logoutput => on_failure,
require => [
Gluster::Volume[$volume],
File["${vardir}/xml.py"],
],
}
}
# vim: ts=8
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