# Class: ntp
#
#   This module manages the ntp service.
#
#   Jeff McCune <jeff@puppetlabs.com>
#   2011-02-23
#
#   Tested platforms:
#    - Debian 6.0 Squeeze
#    - CentOS 5.4
#    - Amazon Linux 2011.09
#    - FreeBSD 9.0
#
# Parameters:
#
#   $servers = [ '0.debian.pool.ntp.org iburst',
#                '1.debian.pool.ntp.org iburst',
#                '2.debian.pool.ntp.org iburst',
#                '3.debian.pool.ntp.org iburst', ]
#
# Actions:
#
#  Installs, configures, and manages the ntp service.
#
# Requires:
#
# Sample Usage:
#
#   class { "ntp":
#     servers    => [ 'time.apple.com' ],
#     autoupdate => false,
#   }
#
# [Remember: No empty lines between comments and class definition]
class ntp($servers='UNSET',
          $ensure='running',
          $autoupdate=false
) {

  if ! ($ensure in [ 'running', 'stopped' ]) {
    fail('ensure parameter must be running or stopped')
  }

  if $autoupdate == true {
    $package_ensure = latest
  } elsif $autoupdate == false {
    $package_ensure = present
  } else {
    fail('autoupdate parameter must be true or false')
  }

  case $::operatingsystem {
    debian, ubuntu: {
      $supported  = true
      $pkg_name   = [ 'ntp' ]
      $svc_name   = 'ntp'
      $config     = '/etc/ntp.conf'
      $config_tpl = 'ntp.conf.debian.erb'
      if ($servers == 'UNSET') {
        $servers_real = [ '0.debian.pool.ntp.org iburst',
                          '1.debian.pool.ntp.org iburst',
                          '2.debian.pool.ntp.org iburst',
                          '3.debian.pool.ntp.org iburst', ]
      } else {
        $servers_real = $servers
      }
    }
    centos, redhat, oel, linux, fedora: {
      $supported  = true
      $pkg_name   = [ 'ntp' ]
      $svc_name   = 'ntpd'
      $config     = '/etc/ntp.conf'
      $config_tpl = 'ntp.conf.el.erb'
      if ($servers == 'UNSET') {
        $servers_real = [ '0.centos.pool.ntp.org',
                          '1.centos.pool.ntp.org',
                          '2.centos.pool.ntp.org', ]
      } else {
        $servers_real = $servers
      }
    }
    freebsd: {
      $supported  = true
      $pkg_name   = ['.*/net/ntp']
      $svc_name   = 'ntpd'
      $config     = '/etc/ntp.conf'
      $config_tpl = 'ntp.conf.freebsd.erb'
      if ($servers == 'UNSET') {
        $servers_real = [ '0.freebsd.pool.ntp.org iburst maxpoll 9',
                          '1.freebsd.pool.ntp.org iburst maxpoll 9',
                          '2.freebsd.pool.ntp.org iburst maxpoll 9',
                          '3.freebsd.pool.ntp.org iburst maxpoll 9', ]
      } else {
        $servers_real = $servers
      }
    }
    default: {
      $supported = false
      notify { "${module_name}_unsupported":
        message => "The ${module_name} module is not supported on ${::operatingsystem}",
      }
    }
  }

  if ($supported == true) {

    package { 'ntp':
      name   =>  $pkg_name,
      ensure => $package_ensure,
    }

    file { $config:
      ensure  => file,
      owner   => 0,
      group   => 0,
      mode    => '0644',
      content => template("${module_name}/${config_tpl}"),
      require => Package[$pkg_name],
    }

    service { 'ntp':
      ensure     => $ensure,
      name       => $svc_name,
      hasstatus  => true,
      hasrestart => true,
      subscribe  => [ Package[$pkg_name], File[$config] ],
    }
  }
}