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# INI-file module #
This module provides resource types for use in managing INI-style configuration
files. The main resource type is `ini_setting`, which is used to manage an
individual setting in an INI file. Here's an example usage:
ini_setting { "sample setting":
path => '/tmp/foo.ini',
section => 'foo',
setting => 'foosetting',
value => 'FOO!',
ensure => present,
}
A supplementary resource type is `ini_subsetting`, which is used to manage
settings that consist of several arguments such as
JAVA_ARGS="-Xmx192m -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/var/log/pe-puppetdb/puppetdb-oom.hprof "
ini_subsetting {'sample subsetting':
ensure => present,
section => '',
key_val_separator => '=',
path => '/etc/default/pe-puppetdb',
setting => 'JAVA_ARGS',
subsetting => '-Xmx',
value => '512m',
}
## implementing child providers:
The ini_setting class can be overridden by child providers in order to implement the management of ini settings for a specific configuration file.
In order to implement this, you will need to specify your own Type (as shown below). This type needs to implement a namevar (name), and a property called value:
example:
#my_module/lib/puppet/type/glance_api_config.rb
Puppet::Type.newtype(:glance_api_config) do
ensurable
newparam(:name, :namevar => true) do
desc 'Section/setting name to manage from glance-api.conf'
# namevar should be of the form section/setting
newvalues(/\S+\/\S+/)
end
newproperty(:value) do
desc 'The value of the setting to be defined.'
munge do |v|
v.to_s.strip
end
end
end
This type also must have a provider that utilizes the ini_setting provider as its parent:
example:
# my_module/lib/puppet/provider/glance_api_config/ini_setting.rb
Puppet::Type.type(:glance_api_config).provide(
:ini_setting,
# set ini_setting as the parent provider
:parent => Puppet::Type.type(:ini_setting).provider(:ruby)
) do
# implement section as the first part of the namevar
def section
resource[:name].split('/', 2).first
end
def setting
# implement setting as the second part of the namevar
resource[:name].split('/', 2).last
end
# hard code the file path (this allows purging)
def self.file_path
'/etc/glance/glance-api.conf'
end
end
Now, the individual settings of the /etc/glance/glance-api.conf file can be managed as individual resources:
glance_api_config { 'HEADER/important_config':
value => 'secret_value',
}
Provided that self.file_path has been implemented, you can purge with the following puppet syntax:
resources { 'glance_api_config'
purge => true,
}
If the above code is added, then the resulting configured file will only contain lines implemented as Puppet resources
## A few noteworthy features:
* The module tries *hard* not to manipulate your file any more than it needs to.
In most cases, it should leave the original whitespace, comments, ordering,
etc. perfectly intact.
* Supports comments starting with either '#' or ';'.
* Will add missing sections if they don't exist.
* Supports a "global" section (settings that go at the beginning of the file,
before any named sections) by specifying a section name of "".
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