SecGen/modules/code_examples/puppet_modules/apache/manifests/package.pp

class apache::package (
  $ensure     = 'present',
  $mpm_module = $::apache::params::mpm_module,
) inherits ::apache::params {

  # The base class must be included first because it is used by parameter defaults
  if ! defined(Class['apache']) {
    fail('You must include the apache base class before using any apache defined resources')
  }

  case $::osfamily {
    'FreeBSD': {
      case $mpm_module {
        'prefork': {
        }
        'worker': {
        }
        'event': {
        }
        'itk': {
          package { 'www/mod_mpm_itk':
            ensure => installed,
          }
        }
        default: { fail("MPM module ${mpm_module} not supported on FreeBSD") }
      }
    }
    default: {
    }
  }

  package { 'httpd':
    ensure => $ensure,
    name   => $::apache::apache_name,
    notify => Class['Apache::Service'],
  }
}