Provide support for virtual modules for load-balancing and failover config

README.md

@@ -28,6 +28,7 @@
        * [`freeradius::sql`](#freeradiussql)
        * [`freeradius::statusclient`](#freeradiusstatusclient)
        * [`freeradius::template`](#freeradiustemplate)
+       * [`freeradius::virtual_module`](#freeradiusvirtual_module)
 4. [Limitations - OS compatibility, etc.](#limitations)
 5. [Development - Guide for contributing to the module](#development)
 6. [Release Notes](#release-notes)
@@ -758,6 +759,29 @@ Provide source to a file with the template item. Specify only one of `source` or
 
 Provide content of template item. Specify only one of `source` or `content`.
 
+#### `freeradius::virtual_module`
+
+Define a virtual module which consists of one or more other modules, for failover or
+load-balancing purposes.
+
+##### `name`
+##### `submodules`
+##### `type`
+
+```puppet
+freeradius::virtual_module { 'myldap':
+  submodules => ['ldap1', 'ldap2'],
+  type       => 'redundant-load-balance',
+}
+```
+yields
+```
+redundant-load-balance myldap {
+	ldap1
+	ldap2
+}
+```
+
 ## Limitations
 
 This module is targeted at FreeRADIUS 3.x running on CentOS 7. It will not work on

manifests/virtual_module.pp

+# Define a virtual module, made up of others
+define freeradius::virtual_module (
+  $submodules,
+  $ensure = present,
+  $type = 'redundant-load-balance',
+) {
+  $fr_package  = $::freeradius::params::fr_package
+  $fr_service  = $::freeradius::params::fr_service
+  $fr_basepath = $::freeradius::params::fr_basepath
+  $fr_group    = $::freeradius::params::fr_group
+
+  # Valid types of virtual module from
+  # http://wiki.freeradius.org/config/load-balancing
+  # http://wiki.freeradius.org/config/Fail-over#virtual-modules
+  validate_re($type, [
+    '^redundant$',
+    '^load-balance$',
+    '^redundant-load-balance$',
+    '^group$',
+  ])
+
+  # Make sure $submodules is a non-zero array
+  $submodules = any2array($submodules)
+  validate_array($submodules)
+  if count($submodules) < 1 {
+    fail('Must specify at least one $submodule')
+  }
+
+  file { "${fr_basepath}/instantiate/${name}":
+    ensure  => $ensure,
+    mode    => '0640',
+    owner   => 'root',
+    group   => $fr_group,
+    content => template('freeradius/virtual_module.erb'),
+    require => [Package[$fr_package], Group[$fr_group]],
+    notify  => Service[$fr_service],
+  }
+}

templates/virtual_module.erb

+<%= @type %> <%= @name %> {
+<% @submodules.each do |submod| -%>
+	<%= submod %>
+<% end -%>
+}